SPARC Forum

Tech => Progress Reports => Topic started by: Koolaid64 on January 27, 2015, 10:13:02 pm

Title: Twisted Sick Robotics
Post by: Koolaid64 on January 27, 2015, 10:13:02 pm
Well looks like I'm here now too. So let's recap some bots in no real order

Fangus and its many versions:

very first bot, had some good ideas but poor execution
(http://i.imgur.com/ilxUl8z.jpg)
second attempt at fangus, got a lot better. Brushless was a big plus but there was still a lot of poor execution like wire ties holding on the top plate. don't do this.   
(http://i.imgur.com/YKbX8e4.jpg)
now we are getting somewhere, much better frame design. Real tool steel for the weapon. first real success was with this bot
(http://i.imgur.com/D6Smfx1.jpg)
this one was a step in both directions some things were improved on and some this were made worse. the weapon for example was stressing the steels weakest orientation.
(http://i.imgur.com/jtp7zit.jpg)
This guy on the other hand was ten giant steps in the right direction. great frame, very solid weapon,  extremely light shuffling system. great bot all-round 
(http://i.imgur.com/XXXLKM9.jpg)
so good I made a Ti version
(http://i.imgur.com/CsahFMC.jpg)

next bot to talk about is Szalor:

first build, never made weight really, fought in one rumble then was rebuilt
(http://i.imgur.com/C7yO9kI.jpg)
very solid bot this, weapon didn't have much mass but the bot was a good work horse. never really won any comps but was great to fight and never really got busted up to bad.
(http://i.imgur.com/kcYapA5.jpg)
updated rebuild with some minor improvements. did about as well as the old version.
(http://i.imgur.com/gqs6rjy.jpg)

Ripto and it's many versions:

first version, how it was meant to be
(http://i.imgur.com/8KlDhM5.jpg)
how it actually was. this was my first shuffle bot. made in a last minute effort to make weight. best thing I ever did
(http://i.imgur.com/v5T19tQ.jpg)
My first attempt at a beetle. some poor design choices, like the three tooth disc made from ti. but it did alright in the end.
(http://i.imgur.com/sHub3z7.jpg)
and this was when I started to get serious. I had some access to some real machines and was becoming a much better designer.
(http://i.imgur.com/II9R097.jpg)
some minor improvements here, wedge angles and extra support of the outer rails.
(http://i.imgur.com/IECkxRU.jpg)
stepping up to the 12s now. a little to solidly built, the shock from hit breaks it's own motors. working on that now.
(http://i.imgur.com/E2CIKFc.jpg)
and full circle back to the ants. got to finally try out the tank track belting. works great until someone hits you
(http://i.imgur.com/xWIKkxz.jpg)

Arcbeetle:

a wonderfully dumb drum build, very fun bot. needs a rebuild
(http://i.imgur.com/SJ2i0zd.jpg)

Crim:

Fist real attempt at a fairyweight. should have stopped with it really. most successful fairy I've ever built.
(http://i.imgur.com/EjexdpC.jpg)
v2 trying out 3d printing frames with mixed results.
(http://i.imgur.com/jWGkIBa.jpg)

Dick Dastardly:

the double D was build with longevity in mind and has been standing the test of time very well.
(http://i.imgur.com/EKFb4cE.jpg)

Jukid:

Holy crap what a fun bot. built as a joke with old servos it managed a moto 2nd
(http://i.imgur.com/HjGdlm8.jpg)

Kongol:

It was really cool, up until it exploded.
(http://i.imgur.com/Gw2nd1w.jpg)

Massive:

fast and dirty mantis build for bot blast. never really got any good fights out of it due to speed controller issues.
(http://i.imgur.com/L7xhJtD.jpg)

Miss Fortune:

I bought Misfortune from Australia half built with all the parts and finished it. it's slight name change is a simple pun that I enjoy.
(http://i.imgur.com/inWrSuI.jpg) 

Torgr:

a semi quick build that made for a very cool bot.
(http://i.imgur.com/ykUh1JT.jpg)
v2 fixed some of it's problems but it still couldn't self-right properly which led to the loop of shame.
(http://i.imgur.com/BhUfbgp.jpg)

Zergling:

goofy little undercutter, worked very well though
(http://i.imgur.com/WaKS3l4.jpg)

Secto:

uber compact beetle. what a pain it was to change batteries
(http://i.imgur.com/C65J7c1.jpg)

Brisingr:

neat little undercutter built for my cousin to drive
(http://i.imgur.com/Hb0uqyg.jpg)

Lady bug:

one day build, mini servo make shitty drives
(http://i.imgur.com/InLFgeh.jpg)


well that looks like most everything, I will be adding general progress as it happens from now on.

-Kyle
Title: Re: Twisted Sick Robotics
Post by: Ellis on January 28, 2015, 07:33:43 am
All of these look like real quality builds. I love seeing the graduation in weapon designs across the various machines.
Title: Re: Twisted Sick Robotics
Post by: Harry Hills on January 28, 2015, 08:34:34 am
I really love Secto, do you have any more pictures?
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on January 28, 2015, 08:53:21 am
I have a couple, It was originally built as a full body spinner platform but the shell never came together for it.

(http://i.imgur.com/UmqdUE7.jpg)
(http://i.imgur.com/p2wLfqY.jpg)
(http://i.imgur.com/JkOIcXu.jpg)
Title: Re: Twisted Sick Robotics
Post by: Harry Hills on January 28, 2015, 10:10:46 am
Supercool. How did you machine the disc/bar?
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on January 28, 2015, 10:40:24 am
The disc/bar was something I purchased off of another builder. I have no clue what it is original from, maybe an edger blade of some kind.


 so picking up here where I left off on the delphi forums http://forums.delphiforums.com/cjrc/messages/?msg=3561.1 (http://forums.delphiforums.com/cjrc/messages/?msg=3561.1) I have some progress.

Fangus got put back together with some much needed upgrades. I didn't take any real pictures of the work though. I replaced the old weapon shaft because it had a slight bend in it. I also recessed the frame and added a bearing for the weapon. which is a big upgrade from just floating in the UHMW. I also am using silver sparks now which I mounted on the fingertech bearing blocks to relieve stress from the gearboxs. I need some new latex tubing and it will be completely finished.
(http://i.imgur.com/oNt7Fti.jpg)

Dick Dastardly got the fingertech timing pulley upgrade which included new weapon hubs. The weapon now has a 2:1 ratio which is quite frightening now.
(http://i.imgur.com/7C1RoMG.jpg)
I also gave it a quick paint job
(http://i.imgur.com/HG3BHvN.jpg)

all four little bots are mostly done now so its time for big bots.
(http://i.imgur.com/IRXuT3W.jpg)

I bought some new a123 cells to make a new pack for Miss Fortune. plus I needed to tidy up the old pack I had which needed help. I bent some copper tabs to 90* and soldered my cells up. then I added my balance connectors and folded the pack up.
(http://i.imgur.com/IbzIcQP.jpg)   
I then made some cardboard sleeves out of an old cereal box, this will keep the cells well isolated if they should ever overheat.
(http://i.imgur.com/Qe8GhbX.jpg)
to finish them off I slide a tube of heat shrink over everything and hit them with the heat gun.
(http://i.imgur.com/hD1XlRn.jpg)

today I plan on getting Miss Fortunes weapon assembly put back together.

-Kyle 



 
 
Title: Re: Twisted Sick Robotics
Post by: Infernaltank on January 28, 2015, 04:03:46 pm
your bots look fierce as always kyle
Title: Re: Twisted Sick Robotics
Post by: Joe Doerfler on January 28, 2015, 06:37:39 pm
Did you buy your a123s off of buya123s.com. I just got some and realized that those little aluminum tabs were not one there. How would you recommend putting them on?
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on January 28, 2015, 07:29:22 pm
I went risky and bought off ebay. I received some good cells though. I used 8 gauge wire that I flattened out a bit to make tabs. then I soldered them on with an 80w iron and some high flux solder.

also if you follow the link in Jims build he shows how he did his with some 12 gauge wire. 
 
-Kyle
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 02, 2015, 08:56:37 pm
ok so I made some progress on miss fortune in the past few days.

First of all I welded up some wedge stops for the back wedge. this way I can't get high centered on my own wedge.
(http://i.imgur.com/NzqpnoW.jpg)
I also made some pulleys for it. here is the double v-belts pulley for the weapon motor
(http://i.imgur.com/JDqUGiK.jpg)
and one nice one for the weapon and a spare that I made out of a slightly short piece of scrap.
(http://i.imgur.com/9TnEJgy.jpg)
the nice pulley mounts up really well
(http://i.imgur.com/91hbzFx.jpg)
and here's the whole thing assembled. the idler still works perfect, didn't even have to change it. 
(http://i.imgur.com/Be7Phuf.jpg)

-Kyle
Title: Re: Twisted Sick Robotics
Post by: BranYoung on February 02, 2015, 09:24:32 pm
What kind of weapon motor do you use to power that thing? Also, is that pulley on the weapon simply being held in by the spacer compressing it or is it being attached by some some screws?
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 02, 2015, 09:57:52 pm
the pulleys have four set screws that seat into indents on the shaft
also this is the motor http://www.hobbyking.com/hobbyking/store/__51847__KB_44_74_Brushless_Inrunner_1500KV.html
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on February 03, 2015, 05:52:38 pm
What size / type of belts are those? I didn't think you could do an idler for the back of v belts but that setup looks solid to me. A 2600 watt motor is a lot to put through the belts. I'm interested to see how it holds up.

-Zac
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 03, 2015, 06:20:14 pm
they are 2L160. My lathe has a tension idler on the back of a vbelt and it works well.   
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 04, 2015, 03:42:54 pm
Miss Fortune is pretty much done mechanically so I have been working on Ripto.

today I finally fixed corners of the wedge/skirts together. They came out pretty well but would have been better off if I had done it before it got beat on.
(http://i.imgur.com/yHn3htG.jpg)
(http://i.imgur.com/aWYj0Du.jpg) 
Also thoughts?
(http://i.imgur.com/7x5zYau.jpg)

I'm hoping this will be a solution to many problems. Right now the bot is looking at being 4-6oz over weight if I build it with the Ti rails and the improvements I am planning to add.
changing to 3/4" uhmw will save me 8oz alone. I'm also hoping this will help with my shock problem.

-Kyle
Title: Re: Twisted Sick Robotics
Post by: Don Doerfler on February 04, 2015, 04:00:14 pm
i would say use the uhmw for the rails unless you want to take material out of the ti and the back al piece. Also supporting the back of you motors helps a lot with shock.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 04, 2015, 04:15:37 pm
the back already has big pockets, supporting the can is a planned upgrade. but I have had magnets break inside the can without the motor coming apart.
Title: Re: Twisted Sick Robotics
Post by: Don Doerfler on February 04, 2015, 04:29:40 pm
It might of been a defective motor.... i think it there was that much shock to break the weapon motor magnet the drive would of cracked as well.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 04, 2015, 06:57:01 pm
the hit just bent the face of the drive motor can way out, didn't actually break the magnets. they are mounted on the out side rails though. it was the last hit of this fight https://www.youtube.com/watch?v=qEa9qB8lffM (https://www.youtube.com/watch?v=qEa9qB8lffM) I hit Cataclysm when he was against the wall and all the energy went back into Ripto. 
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on February 04, 2015, 07:00:08 pm
The UHMW will open up around the shaft pretty bad, even in 3/4" form I'd bet. To combat that you might be able to make some small flanged aluminum blocks that you can use to mount the shaft, then sink them into the aluminum and bolt them in place to spread the load.  If you leave enough meat around that I don't think you'll break the UHMW - it is really tough.

The shock problems are breaking your drive motors right? If you put some foam between the drive motors and the frame rails that keep them from tearing off the gearboxes it could help a lot. You are awfully tight on vertical clearance though so there may not be space.  Definitely use a metal pulley for the motor this time :)

-Zac
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 04, 2015, 07:18:10 pm
I already have 3 this time around. I have been thinking about making alu hubs to cradle the shaft, I'll have to see where i'm at with weight first. Right now i'm planning to make a nylon end cap to hold the weapon motor on tight. And I will be making uhmw supports for the drive motors.
Title: Re: Twisted Sick Robotics
Post by: Don Doerfler on February 04, 2015, 07:25:42 pm
what if you made the rails out of 1/4 aluminum the previous ones are 3/16 ti right?
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 04, 2015, 07:28:28 pm
they are 1/4" Ti and I don't have that much faith in alu.

The uhmw rails are coming along nicely. I have a bit of work for tomorrow though
(http://i.imgur.com/QzBOTG3.jpg)
(http://i.imgur.com/ReFEusF.jpg)
Title: Re: Twisted Sick Robotics
Post by: Don Doerfler on February 04, 2015, 07:33:43 pm
so since its made out of 1/4 ti you can get an equivalent of 3/8 al rails without pocketing them
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 04, 2015, 07:40:43 pm
I was considering 3/8 alu for the structure with some uhmw for the prongs in the back but I would have to remake more of the bot for it to work. Right now I'm liking how the 3/4" rails are turning out and they are a cake walk to machine. I'm also down from 14oz to 7.8oz per rail and i'm not even done with them.
-Kyle
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on February 06, 2015, 05:40:48 pm
I was considering 3/8 alu for the structure with some uhmw for the prongs in the back but I would have to remake more of the bot for it to work. Right now I'm liking how the 3/4" rails are turning out and they are a cake walk to machine. I'm also down from 14oz to 7.8oz per rail and i'm not even done with them.
-Kyle

I love me some UHMW. I'm interested to see how it holds up. 3/4" was enough to prevent the original Tetanus from biting into Mangi... and it is so light! Also, now it really looks like Ripto

-Zac
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 10, 2015, 10:42:22 pm
been doing some work on the bot

just about finished with the frame rails. made a mount for the weapon motor, sunk some nuts into it to try and keep the wedge on, and made a pocket for the battery to fit.
I also made a nice support for the weapon motor. things feel pretty solid this time and i'm pretty confident I shouldn't break a motor just from shock.
(http://i.imgur.com/eaBJXyd.jpg)(http://i.imgur.com/RzpCRzX.jpg)


it's starting to look like a bot again.
(http://i.imgur.com/KcSmbfA.jpg)(http://i.imgur.com/nl9i2sl.jpg)

i hope to finish some stuff as soon as i get a day off work. but it might not even matter if I don't get my speed controllers soon. I order them Jan 3rd and still no sign :/
-Kyle
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on February 11, 2015, 06:42:49 pm
What speed controllers did you order that you are waiting on? I might have a spare that would work for you.  I have a spare ICE 100, HK 60A with the giant heat sink, RageBridge, and maybe one or two other things laying around... Not likely to fit well, but maybe possibilities.

-Zac
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 11, 2015, 07:06:25 pm
I ordered a bunch of botbitz 30s. The ragebridge is to large i'm afraid, plus I wouldn't feel comfortable using it. it's a bit to nice for a 12
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on February 11, 2015, 07:14:20 pm
getting close to the event horizon of not being able to order a backup... Unfortunately I sold my HH BR-XLs - they probably would have worked too.

-Zac
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 11, 2015, 07:22:17 pm
it's fine, if they don't show they don't show. it will be disappointing as all hell but whatever. maybe ill make a 2 day assbot and use the scorp xl. it has a mind of its own but thats just fine for an assbot
Title: Re: Twisted Sick Robotics
Post by: Joe Doerfler on February 11, 2015, 08:15:42 pm
I can let you borrow some Banebots 12-45, but they are used so ill send you 4 of them just incase something happens to them.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 11, 2015, 08:19:27 pm
I may take you up on that, ill pm you
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on February 11, 2015, 09:59:09 pm
This is why robot builders are the coolest people I know.

-Zac
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 11, 2015, 10:07:49 pm
can confirm, dope dudes.
Title: Re: Twisted Sick Robotics
Post by: Infernaltank on February 12, 2015, 11:52:27 am
duh we're like the coolest people around
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 14, 2015, 07:28:43 am
over the past two days I pretty much finished up the major work on ripto. I made aluminum end caps to support the weapon shaft and used some tee nut to really secure them to the frame. the whole thing makes for a super solid setup. very pleased with it.
(http://i.imgur.com/TSeeAvp.jpg) (http://i.imgur.com/kle79Ji.jpg)

I fully assemblem the weapon setup as well. everything else will wait on speed controllers because I have to run wires behind the frame.
(http://i.imgur.com/QLan2dW.jpg) (http://i.imgur.com/UaijTAk.jpg)

-Kyle
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on February 14, 2015, 09:13:29 am
That looks totally awesome.  I like how the entire weapon assembly is a standalone unit. It makes it easier to work on and is pretty strong too.  I like how you are using the plastic in all the ways it is good for (shock mounting, low density = lots of thickness, etc) while adjusting for the things it isn't as good for (end caps for the shaft, tee nuts, embedded nuts for the wedge).  All in all I think it's a great setup.

-Zac
Title: Re: Twisted Sick Robotics
Post by: Harry Hills on February 14, 2015, 01:41:15 pm
Hardcore mate, love the weapon assembly.
Title: Re: Twisted Sick Robotics
Post by: jiocca on February 14, 2015, 01:45:11 pm
I want this robot to work so badly. The Ripto design has been a favorite of mine for a while. although not as much as the inclined blade spinner.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 14, 2015, 08:59:40 pm
I want this robot to work so badly.

Me too me too...
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 16, 2015, 05:56:46 pm
was thinking of Zac today
(http://i.imgur.com/AXycEHE.jpg)
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on February 16, 2015, 06:32:10 pm
Those look like they will be good at deflecting horizontal blows. Should work ok on candy paint too.

-Zac
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 17, 2015, 11:23:13 pm
received some bb12-45s in the mail today thanks to Joe and tucked them into a nice warm bot. things are just about done now, everything spins.

(http://i.imgur.com/ugwm6uw.jpg) (http://i.imgur.com/JTOPo5F.jpg)
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on February 17, 2015, 11:25:50 pm
Looks nice, but why don't you weld your armor? It'd be stronger than that block and bolts by far.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 17, 2015, 11:35:39 pm
I don't have the equipment and it would make accessing and working on things that much harder.
Title: Re: Twisted Sick Robotics
Post by: Don Doerfler on February 17, 2015, 11:36:42 pm
Looks good

we tried welding our ti one year and when we faced ourselves we broke it at the weld. Unless you have <3/16 thick ti aluminum blocks are better
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on February 17, 2015, 11:49:10 pm
I suppose it would, it still looks like it'd be pretty easy to get at, at least compared to my bot. I'm getting mine welded at a local college, I just provide all the material and rods and some plate to practice on.
Don, did you use a grade 5 filler rod? Normally, you weld with grade 2 unless you anneal the whole piece to prevent it from cracking at the joint, since it hardens locally.
Title: Re: Twisted Sick Robotics
Post by: Don Doerfler on February 17, 2015, 11:53:08 pm
the U.S military did it for us so im not sure

kyle
do you run ur drive and weapon on the fingertech switch or do you have a separate battery that powers your drive
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 17, 2015, 11:54:25 pm
right now everything is on one switch
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 17, 2015, 11:59:06 pm
Lucas, you need a build report mate. I would like to see what you're working on.
-Kyle 
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on February 18, 2015, 12:00:59 am
I've been meaning to, I think I'll start right now. I don't have all that many pictures though, that's what's been holding me back. I always forget to take them while I'm working.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 18, 2015, 07:19:30 pm
Tool are going away till moto.
(http://i.imgur.com/cdqnTj5.jpg)
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on February 18, 2015, 07:48:59 pm
I still say you take "weapon lock" too seriously...

Those bots look great!

-Zac
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 23, 2015, 03:56:41 pm
I think i'm getting good at this. All weekend I only broke one 540 motor and killed a pair of 6m bearings.
Title: Re: Twisted Sick Robotics
Post by: Badnik96 on February 23, 2015, 05:50:16 pm
I don't think I ever asked you but what happened to Sting? I was looking forward to watching it fight but you couldn't get it working.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 23, 2015, 06:05:12 pm
on friday pretty much all of my receivers except 1 decided they would no longer failsafe properly. by the time I got the ants sorted out it was late and I couldn't be bothered to mess with the fairy. 
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on February 23, 2015, 06:36:11 pm
That sucks, it looks pretty cool. How'd Ripto do? UHMW weapon mounts worked well? Not really any videos up yet.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 23, 2015, 06:40:49 pm
the rails are great. I need to change there shape for the hobby though, it has issued unique to it that the beetle doesn't. plus I would like to inbed full nut-strips rather then just square nuts for ease of working on. I also need to work on the speed controller for the weapon to get better timing sync on the start up.

the thing kicked ass though. the drive speed was just the way I wanted it. hellishly fast.

-Kyle
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on February 23, 2015, 06:42:49 pm
You should try and find a sensored motor and speed controller, it'd work way better on startup. What size and kv is the motor you're using now?
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 23, 2015, 06:47:31 pm
Im running a turnigy and HK special.
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idproduct=28392
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idproduct=10331

and it's just a quick change I just need to pick up a programming card. right now it cogs for about 2 seconds then goes like hell. I would like for it to just go like hell from the start.
-Kyle
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on February 23, 2015, 07:06:33 pm
What drive setup did you settle on. Last I remember you were overheating the 5:1 motors you were testing out.

It sure killed Chop Block well enough :)

-Zac
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 23, 2015, 07:08:45 pm
I ended up with 540s on 16:1s because they didn't have pinion sizes for anything smaller. I got it under weight some how and I love the speed.
-Kyle
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 23, 2015, 07:09:49 pm
I didn't actually kill anything in chop did I? I though I was mostly frame damage
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on February 23, 2015, 07:28:46 pm
Yeah, Chop was just frame damage, but I think Block was dead, so we were out. Chop's weapon is 100% functional. I don't know about the drive, but it was barely functional in the first place :)

-Zac
Title: Re: Twisted Sick Robotics
Post by: teamsandman on February 24, 2015, 03:01:59 pm
You tossed Block to the ceiling and that hit bent the center of the wedge pretty badly out of straightness, but it still drove around fine. The next hit against the judges table wall, it no longer worked. The power switch had exploded inside and one of the gearboxes was cracked...
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on February 24, 2015, 03:04:52 pm
Damn, what switch were you using? Was it really close to where he hit or something? I watched that fight, looked pretty good.
Title: Re: Twisted Sick Robotics
Post by: teamsandman on February 24, 2015, 03:16:07 pm
Nothing special or deserving of being in a robot. I think it was from radio shack or something I had wired in years ago, it has never failed before... only using fingertech or whyachi switches for future robots... but I have had problems so far with every fingertech switch I have bought.
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on February 24, 2015, 03:24:20 pm
Really? I thought those switches looked pretty good. I'd recommend against the Whyachi switches, the small ones, at least, bounce on a good hit, and lose contact. Your receiver typically has to restart, and you end up sitting there for at least a second or two. If the Fingertech ones aren't good, I guess its pretty much just removable links, then.
Title: Re: Twisted Sick Robotics
Post by: TeamAstroBot on February 24, 2015, 03:30:48 pm
Really? I thought those switches looked pretty good. I'd recommend against the Whyachi switches, the small ones, at least, bounce on a good hit, and lose contact. Your receiver typically has to restart, and you end up sitting there for at least a second or two. If the Fingertech ones aren't good, I guess its pretty much just removable links, then.

Speaking of the Fingertech switches, after troubleshooting Scorpius nearly all day with you and Zac, I figured out the problem was somehow tied to the switch. I had the switch wired between the battery and weapon & drive ESC's. I decided to bypassed the switch for the weapon, and magically it starts working!!
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on February 24, 2015, 03:33:48 pm
Hmm, that's odd. You should take the switch apart, they're dead simple, really. You sure it isn't the wires on itor something?
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 24, 2015, 03:34:45 pm
the fingertech switches are good you just end up stripping the screws out from repeated use.
Title: Re: Twisted Sick Robotics
Post by: MikeNCR on February 24, 2015, 03:38:16 pm
the fingertech switches are good you just end up stripping the screws out from repeated use.

Really depends on how hard you wrench on it. Algos and Klazo have been using the same switch for several years with no issues
Title: Re: Twisted Sick Robotics
Post by: TeamAstroBot on February 24, 2015, 03:53:26 pm
Hmm, that's odd. You should take the switch apart, they're dead simple, really. You sure it isn't the wires on itor something?

I must of rewired the entire bot 6 times Sat. morning. Tried everything from new ECS's, Rx's, Tx's, Tx programming. When it comes down to it, I think it just may have been a faulty switch. It was brand new prior to Moto.
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on February 24, 2015, 03:57:44 pm

I must of rewired the entire bot 6 times Sat. morning. Tried everything from new ECS's, Rx's, Tx's, Tx programming. When it comes down to it, I think it just may have been a faulty switch. It was brand new prior to Moto.
I just don't see how it could simply not work unless something is very wrong or the screw isn't tight enough. I mean, as I understand it, the bottom face of the cap screw touches one contact when it's tightened and is threaded into the other one, right?
Title: Re: Twisted Sick Robotics
Post by: TeamAstroBot on February 24, 2015, 04:06:08 pm

I must of rewired the entire bot 6 times Sat. morning. Tried everything from new ECS's, Rx's, Tx's, Tx programming. When it comes down to it, I think it just may have been a faulty switch. It was brand new prior to Moto.
I just don't see how it could simply not work unless something is very wrong or the screw isn't tight enough. I mean, as I understand it, the bottom face of the cap screw touches one contact when it's tightened and is threaded into the other one, right?

(http://www.fingertechrobotics.com/prodimages/connswitches/ft_mini_switch_CAD.png)

I wont know until I actually take it apart and look at it. But you can see the symptoms of Scorpius in this fight.
https://www.youtube.com/watch?v=Mm91Q5pkPi8

Blade spins up--- cuts power, and at the same time puts power to the drive motors causing it to spin out.--- weapon becomes unresponsive for a few seconds and then repeats. Doesn't sound like the switch to me either, but after separating the power systems, it works fine.
Title: Re: Twisted Sick Robotics
Post by: MikeNCR on February 24, 2015, 04:09:58 pm
I wont know until I actually take it apart and look at it. But you can see the symptoms of Scorpius in this fight.
https://www.youtube.com/watch?v=Mm91Q5pkPi8

Blade spins up--- cuts power, and at the same time puts power to the drive motors causing it to spin out.--- weapon becomes unresponsive for a few seconds and then repeats. Doesn't sound like the switch to me either, but after separating the power systems, it works fine.

When you say "separating the power systems" do you mean that the weapon and drive are now independently powered or do you mean that you bypassed the power switch?
Title: Re: Twisted Sick Robotics
Post by: TeamAstroBot on February 24, 2015, 04:12:20 pm
I wont know until I actually take it apart and look at it. But you can see the symptoms of Scorpius in this fight.
https://www.youtube.com/watch?v=Mm91Q5pkPi8

Blade spins up--- cuts power, and at the same time puts power to the drive motors causing it to spin out.--- weapon becomes unresponsive for a few seconds and then repeats. Doesn't sound like the switch to me either, but after separating the power systems, it works fine.

When you say "separating the power systems" do you mean that the weapon and drive are now independently powered or do you mean that you bypassed the power switch?

Same power source. Just used the switch for the drive and a removable link for the weapon, rather than everything going from the one switch.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 24, 2015, 04:49:53 pm
just testing out the old kick-plate. https://www.youtube.com/watch?v=XrNzGw1nH_Y
Title: Re: Twisted Sick Robotics
Post by: Badnik96 on February 24, 2015, 06:43:58 pm
That last hit was insane. I think I remember seeing one of the rollers from Firefly's omni wheel on the floor when I was putting Nocturne in the arena later that day.

Glad you got Ripto dialed in this year, it was freaking fierce.
Title: Re: Twisted Sick Robotics
Post by: Don Doerfler on February 24, 2015, 06:48:54 pm
yeah ripto looked awesome ....was your armor catching on the ground or did u lose half of your drive in your matches. Also was your 2nd match with iso rex the semi finals if so I don't see how you would of lost.
Title: Re: Twisted Sick Robotics
Post by: teamsandman on February 24, 2015, 07:38:47 pm
I am not saying its not good. Kurtis does have some great products and not bashing him at all. It seems my luck hasn't been the best with the switches though, the one in my robot was very hard to get it to make contact and ended up stripping after 8 fights or something. The spare I bought, doesn't seem to fit any size hex key due to some manufacturing issue, probably a fluke.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 24, 2015, 10:19:27 pm
full recap of the weekend: (well big bots anyway)

Ripto

fight one, Isotelus Rex
https://www.youtube.com/watch?v=F5aj0UNbBrY

pretty straight forward what went wrong here. I got stuck in the one spot I can't get out of without the weapon spinning.

Work done - cut down the prongs on the back so the wheels can touch when on the side.

fight two, Firefly
https://www.youtube.com/watch?v=XrNzGw1nH_Y

gave the kickplates and my disc a real run for their money here. discovered that I still suffer from shocking my drive motors even with my plastic rails. in the last big kickplate ram I blew the magnets up in my left side drive.

work done - replace 540 motor

fight three, Hyper drive
https://www.youtube.com/watch?v=py3PBP6CjiA

pre flight testing before the match relieved that drive repairs were working great and that the bearings in the weapon motor were about shot. As my weapon spun up it made a high pitch whistle that only made my bot sound cooler.

in the end of the fight I though I had shattered more magnets but then as soon as hyper drive was counted out I was able to drive back to the door. upon returning to My work bench I discovered that I had forgotten the steel washer that separates the gears in the p60 from the motor mount pate, derp.

work done - put the washer back where it belongs.

fight four, Chop Bock
https://www.youtube.com/watch?v=ZUXhqrQI_fs

pre testing after I put the washer back in showed that my drive was good but my weapon motor wasn't making its start-up beeps when I powered it on. So I took it over the the test box to attempt to spin up and fully check things over. after no response I began tearing off covers for my electronics system and checking everything over. At first I was preparing to fully replace the speed controller with my backup but while pulling things apart I discovered something like this
(http://i.imgur.com/PzCuoCu.jpg)
Neat right? the xt60s were melting just a bit and pushing in on all sides of the connector causing it to lose contact with the outside wall of the female plug. you can even see that the one male plug is significantly smaller in dia then the other now.
At this point I was forced to postpone our match so I had time to finish replacing the connector.

work done after fight - none

Fight five Isotelus Rex (again)
https://www.youtube.com/watch?v=OqiyKNT-dMc

This time I got my weapon up to speed so it was only a matter of time before I would get position and a good hit. shortly after removing the sheet wedge I got high centered on some arena debris and tried shutting off my weapon in hopes the break would throw me off of it. this worked but in that moment the warm melty plastic of the xt60 cooled and hardened causing the weapon to lose power again. I did get high centered a few more times, partly because of the arena being worst for wear, and partly because of hitting things all day. more on that later. And the rest is a judges decision.

I am said I didn't get a wack at Attrition but maybe next year.

future plans, Deans, deans everywhere. 
 
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on February 25, 2015, 06:37:00 am
Hmm, that's a little worrying, I was going to use a bunch of XT60s myself... How much current were you drawing?
Did you consider shock mounting the gearboxes on a piece of plastic or something as well? Maybe to a vertical block as opposed to your baseplate? May help a bit, but overall I'd say Ripto looked great. I would've liked to see it fight Attrition as well, they're both pretty great bots.
Title: Re: Twisted Sick Robotics
Post by: seangcxq on February 25, 2015, 06:42:11 am
I've had that exact problem when stress testing the XT-60s. From my testing, the "Nylon T-Connectors" are reliable, and generally the knockoff deans are fine. As are the real deans.

As for the Fingertech power switches, I've been using them for nearly 2 years now and have never had any issues. I have about 7 of them total and none have failed. Are you sure you aren't over-tightening? They use aluminum screws.

I included a photo of the first one I got back in March 2013. It's been in many, many fights. The head is a bit worn, but it still functions perfectly.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 25, 2015, 07:07:25 am
My switch is alright, the head on the screw is just a little worn. I'm just going to buy a pack of alu screws from McMaster as replacements.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 25, 2015, 07:15:51 am
In all fairness the xt60s are a 60amp connector and I was running a 85amp controller off them so its not really that surprising
Title: Re: Twisted Sick Robotics
Post by: seangcxq on February 25, 2015, 08:50:27 am
In all fairness the xt60s are a 60amp connector and I was running a 85amp controller off them so its not really that surprising

True, but they're supposed to be a deans replacement and I've put 100 - 150 amps through deans without issue.
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on February 25, 2015, 08:55:51 am
The only thing I can think is that the connectors must have a bit where the male bullet rim hits the plastic on the female and pinches it, or something. They should really be fine at 85 amps, but maybe not what your motor draws on startup.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 26, 2015, 09:52:14 am
so with it being later I might show you some of the cause for my getting high centered throughout the day

Hit robots HARD all day was caused some deformation
(http://i.imgur.com/QtXP46H.jpg)

I already know what changes to do to prevent the base deformation in the future. A minor design change in the rails will solve this easily.

testing the kick-plate also caused this
(http://i.imgur.com/CM1DIDl.jpg)

Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on February 26, 2015, 10:04:10 am
Oops, I guess that happens with a robot as wide as yours.Looks like other than that and the motors you held up great, though.
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on February 26, 2015, 06:14:12 pm
Quote
I just don't see how it could simply not work unless something is very wrong or the screw isn't tight enough. I mean, as I understand it, the bottom face of the cap screw touches one contact when it's tightened and is threaded into the other one, right?

I think I got a little excited and over-tightened the switch I had in chop. Now when I tighten it down it comes on, but there isn't any resistance at the end of the "tightening".  I think I may have stripped either the aluminum threads off the bottom of the screw, or the copper threads in the lower bar.  Either way, the lights still came on but I didn't trust it to stay on after getting slammed around so I replaced it (with one I bought from Mike, who was thoughtful enough to bring lots of spares).

I had a similar-seeming electrical issue with Triggo in my fight with Whammy Bar. Every time I hit him, the shell would stop spinning. It happened long ago when I first switched to brushless, in a fight against Gnome Portal. The problem was that when I tied down the connector between the weapon controller and weapon motor, it pulled it apart a little bit, so it had an intermittent connection that broke every time a big shock happened or a huge current spike hit.  When I took it apart there was actually a burn mark from the arc between the two connections.  I did the same thing against Whammy Bar because I was trying to go too fast - one of the connectors wasn't snug when I tightened it all down. Your issue sure did seem like the rx was resetting, which could happen if the main board power blinked.

-Zac
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on March 03, 2015, 09:48:40 pm
So I have had an idea in my head about using Torgrs frame to make something new. Just want to try something a little different
Torgr:
(http://i.imgur.com/BhUfbgp.jpg)

and the planned new bot mostly using the old frame.
(http://i.imgur.com/ppj0F6R.png)(http://i.imgur.com/w9dXt0h.png)
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on March 03, 2015, 10:08:32 pm
That's a really small diameter weapon. What weight is Torgr? I don't think it would get very strong hits at that size, maybe a wider weapon would be cool, though. If the space is necessary for electronics, you could shift it all off to one side and offset the drum on the frame some.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on March 03, 2015, 10:28:33 pm
Size has nothing to do with it (said no woman ever) it's about mass. Torgr is 3lbs, the bar and hub assembly is 14.5oz which means I can pump that into a mini 2" drumlet.
-Kyle
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on March 03, 2015, 10:34:02 pm
While that's true, mass along a larger diameter is moving faster and carries more energy than the same mass in a smaller diameter.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on March 03, 2015, 10:48:44 pm
tip speed is relevant to how fast I want to spin. same mass at same tip speed is going to be the same hit. the only thing the dia is really effecting at that point is angle impact.
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on March 03, 2015, 10:52:58 pm
Yeah, that's true. I just personally wouldn't want to go much over 10k rpm on a two toothed weapon, but I suppose you don't need as much bite as I want on my 15 on a 3 pounder.
Title: Re: Twisted Sick Robotics
Post by: Infernaltank on March 03, 2015, 11:03:21 pm
do torgr and ripto use the same size chassis?
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on March 04, 2015, 09:17:07 pm
Torgrs frame is just a bit longer.

I have been messing around with the design a bit though. I found a leftover piece of dom steel from when I made Arcbeetle. It's a 2.5" od 2" id piece which means I had to up the drum size a bit. I was fond of the midget drum but all well.
da bitz
(http://i.imgur.com/lCN8tmn.jpg)

da plan
(http://i.imgur.com/pTtixeA.png)(http://i.imgur.com/a7hqEEw.png)

da redneck drum
(http://i.imgur.com/cts90so.png)

-Kyle
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on March 04, 2015, 09:26:02 pm
Looks a lot better :) I like the look of that drum, that tooth looks like kinda a pain to do right though.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on March 04, 2015, 09:34:34 pm
nah, 3/8" square stock, pop in in the vice, 3/8" endmill, tilt head to 30*, cut to .064 dept .034 off center. machine 3/8" flat on tube, then weld. pretty easy really.
-Kyle
Title: Re: Twisted Sick Robotics
Post by: jiocca on March 04, 2015, 09:44:19 pm
NOOOO!! don't lose the inclined blade!!!
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on March 04, 2015, 09:46:58 pm
Torgr will live again. this is something different. I'm just to lazy to make new parts right now.
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on March 04, 2015, 09:55:58 pm
Well, that isn't so bad, I guess, but I would definitely screw up the weld bit if I tried :)
Title: Re: Twisted Sick Robotics
Post by: teamsandman on March 05, 2015, 08:32:37 am
If you get flipped onto your back or the front of the robot, it looks like it could stay there, is the weapon have enough torque to spin the drum to flip you back over?
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on March 05, 2015, 10:13:42 am
it should have the torque, I'm going to be running a 3.5:1 ratio. Plus the wheels will touch when on its back. all and all this is more for fun, so if its a flop all well.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on March 19, 2015, 09:56:39 pm
well I am currently waiting for things to come back in stock before I place my fingertech and hobbyking orders so in the mean time here are some more design scraps.
this time I have been working on a new Arcbeetle for botblast. I have been trying to bring things more in line with my current building style.
(http://i.imgur.com/yy1rIaQ.png)(http://i.imgur.com/VfYkPM4.png)

and the new drumbeaterthing
(http://i.imgur.com/KI2a2SZ.png)

your move Jim
-Kyle
Title: Re: Twisted Sick Robotics
Post by: Badnik96 on March 19, 2015, 10:00:24 pm
That looks pretty sweet
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on March 19, 2015, 10:05:46 pm

your move Jim
-Kyle

That's going to be interesting to balance...

-Zac
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on March 19, 2015, 10:11:52 pm
im going to hold off on my hole drilling on the no tooth side untill after I make my welds the drill accordingly .
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on March 19, 2015, 11:28:49 pm
You sure that those ring bits would be strong enough? I mean, I don't see much benefit for energy with how small they are over just using a bar and making it like a beater instead, even if you keep the same teeth/weight shape.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on March 20, 2015, 07:39:54 am
the whole thing is cut from a piece of 1/4" thick dom steel pipe, plenty strong. same as i used in the first version. this time i have better tools so it will be made properly. youi have to remember that I build on a budget, this set up will only be about 15$
-Kyle
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on March 20, 2015, 08:19:28 am
I totally misunderstood how that was made. Guess I shouldn't respond on so little sleep...
Its made out of pipe that's been milled off and just has the tooth welded on, right? I was thinking the tooth and the bottom part were both welded on to the side rings for some reason or another. I also didn't pay attention to the other image, does the drum ride only on those black bushing things? I've designed something similar on a beetle I drew up, but the weapon doesn't have cutouts since its got a stuffed drum.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on March 20, 2015, 08:25:25 am
the endcaps are just nylon with needle bearing jammed in them
Title: Re: Twisted Sick Robotics
Post by: jiocca on March 20, 2015, 04:14:01 pm
Quote
your move Jim
-Kyle

Ok :)
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on March 20, 2015, 04:22:52 pm
im pretty excited about Mr. Crowley. I look forward to what you make.
Title: Re: Twisted Sick Robotics
Post by: BranYoung on March 20, 2015, 09:08:52 pm
Is it going to be belt driven or is there going to be a motor inside the drum?
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on March 20, 2015, 09:10:50 pm
belt drive. the model needs work
Title: Re: Twisted Sick Robotics
Post by: Infernaltank on March 21, 2015, 11:15:04 am
very nice. i look forward to shoving my bots face into it headfirst.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on April 09, 2015, 07:23:58 pm
been farting around with Ripto, testing out a different rail design to see how I like it.

Getting rid of the prongs will work for self righting from the back but the problem now is that I will be spending more time bouncing around the arena before I can get up right.so I'm going to try something different yet I think.

(http://i.imgur.com/ihOd5bj.jpg)
(http://i.imgur.com/pJfhkuJ.jpg)
(http://i.imgur.com/6at3OXT.jpg)

little mister puts holes in my floor.
(http://i.imgur.com/1wGHLTz.jpg)
Title: Re: Twisted Sick Robotics
Post by: Infernaltank on April 09, 2015, 07:37:11 pm
How big is your test box?
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on April 09, 2015, 07:49:40 pm
8x8. When I get around to making a steel frame for it I will consider hosting.
-Kyle
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on April 09, 2015, 07:54:50 pm
been farting around with Ripto, testing out a different rail design to see how I like it.

Getting rid of the prongs will work for self righting from the back but the problem now is that I will be spending more time bouncing around the arena before I can get up right.so I'm going to try something different yet I think.

little mister puts holes in my floor.
(http://i.imgur.com/1wGHLTz.jpg)

what controller are you using for that disk? Is it reversible?

I put some good gashes in my test box floor when testing Chop, until I put a piece of scrap on top so I could replace it more easily. Of course, it weighs half what your bot does :)

-Zac
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on April 09, 2015, 07:59:59 pm
The controller is only one way. for righting from the back I just full stick it reverse and it pops back up right. the rear wheels still touch.
the big gash is from me test flipping it with the disc spinning to see how it would react.

-Kyle
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on April 09, 2015, 08:14:52 pm
to see how it would react.

Hmm... I guess the answer is "violently".  Glad you got it working and self righting. Not looking forward to facing it again :)

-Zac
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on April 09, 2015, 08:28:48 pm
Looks like that gash would swallow your fairy whole :)

So, how exactly did it get caught on the points? Tilted sideways or something? It's a shame, they looked really nice.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on April 09, 2015, 08:49:46 pm
just an unlucky bounce really. the beetle can get it's self out of this position because it has the power but the 12 can't.
https://www.youtube.com/watch?v=F5aj0UNbBrY
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on April 09, 2015, 09:08:06 pm
Hmm, somehow I didn't see that fight before. Could you try something like a little riser to prevent it from tilting over far enough that it's able to rest on the side, maybe?
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on April 09, 2015, 09:20:17 pm
well when I cut down on them the first time I could get one wheel contacting enough to flip it on its back. then getting upright was no problem
Title: Re: Twisted Sick Robotics
Post by: AlexH on April 09, 2015, 09:36:02 pm
hoop of shame time?
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on April 09, 2015, 09:59:57 pm
What about the rails extending more backwards, maybe rounded over the top like mine are, but on the back part?
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on April 09, 2015, 10:21:45 pm
it probably will end up something like that but more sloped back. I want to keep it from ending up on the front as much as i can
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on April 09, 2015, 10:30:02 pm
Yeah, it works like that on my bot since it's got more weight backwards, looking forward to seeing Ripto really break some bots :)
Title: Re: Twisted Sick Robotics
Post by: TeamAstroBot on July 02, 2015, 12:59:36 pm
Kyle, I was curious as to what method you use to mount 3lb Ripto's blade? If you're willing to share that would be most appreciated. I'd rather not try to reinvent the wheel if I don't need to.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on July 02, 2015, 03:54:00 pm
the old hub was pretty much like this with an grove for round belts.
the new one will be like Dick Dastardly's with the finger tech pulley mated on
(http://i.imgur.com/V2xt2lK.jpg)
(http://i.imgur.com/7C1RoMG.jpg)
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on July 03, 2015, 01:14:52 pm
Starting to look like a drum... beater... thing. 
(http://i.imgur.com/Zy7tiwi.jpg)
(http://i.imgur.com/g1I9NUI.jpg)

-Kyle
Title: Re: Twisted Sick Robotics
Post by: Harry Hills on July 03, 2015, 05:37:34 pm
Very nice. Manually machined?
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on July 03, 2015, 05:42:01 pm
yeah I haven't finished the sides on the mill yet, just cut them out with a abrasive disc.
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on July 03, 2015, 06:06:05 pm
That looks like some fancy work with an abrasive disk.  I look forward to seeing how balanced you can get it.

-Zac
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on July 05, 2015, 08:15:06 pm
Not the prettiest but she'll do. excess weld has been cleaned up and the whole thing is as balanced as I can make it.
(http://i.imgur.com/hnhOFXg.jpg)

Now it's time to give this guy a test run.
(http://i.imgur.com/aHSnN2X.jpg)

-Kyle
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on July 05, 2015, 08:20:30 pm
ooh, nice. Couldn't you have milled the slot and welded before milling the pocket, or something? Although I suppose that would require a flat on one side of your tube. Maybe a bit over final length and it could be done.

By the way, that kiln looks sketchy as hell if you ever have to quench something. I like horizontal ones, makes it easier to grab without melting your hands/face off.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on July 05, 2015, 08:27:19 pm
ooh, nice. Couldn't you have milled the slot and welded before milling the pocket, or something? Although I suppose that would require a flat on one side of your tube. Maybe a bit over final length and it could be done.

By the way, that kiln looks sketchy as hell if you ever have to quench something. I like horizontal ones, makes it easier to grab without melting your hands/face off.

I did the profile first then welded so i would have the best penetration (giggity) then recut the profile.
as for the kiln, one word -free

my uncles before he passed away. he used it to anneal old shell casings that he would then use for jacketing rounds. he was fond of his guns.

-Kyle
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on July 05, 2015, 08:45:31 pm
Free is good :) Weapon definitely looks much nicer than the old arcbeetle. Are you rebuilding more besides the weapon?
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on July 05, 2015, 08:48:21 pm
pretty much everything. I had an unfinished model couple pages back
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on July 05, 2015, 10:39:35 pm
normalizing in progress
-Kyle
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on July 05, 2015, 10:43:20 pm
Cool, did you start before Battlebots or after?
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on July 05, 2015, 11:17:13 pm
after. I had to wait for the kiln to stabilize for an hour.
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on July 05, 2015, 11:19:11 pm
You can usually just throw the pieces in since you just want to get it to a uniform temperature, doesn't really matter how quick you get there, as I understand it.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on July 05, 2015, 11:35:37 pm
well the kiln has a dial with 1 through high on it. so I had to find 1700* first...

again free...
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on July 06, 2015, 12:23:44 am
Ah, it's that kind. My uncle had one similar and actually was able to fit a slick little controller to it that sets the temperature, with a dial in 100 degree increments.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on July 11, 2015, 04:52:53 pm
well no weight for wheel guards again but its done. I bent the shaft a slight bit in testing so I am making a spare now and the weight side of the drum is giving in to the massive Gs and bowing out. crazy, didn't think I would see this much elongation from just the Gs. all well just needs to make it 5~ fights.

(http://i.imgur.com/eovXZZs.jpg)
(http://i.imgur.com/P9cJbPe.jpg)
(http://i.imgur.com/RHjQKfH.jpg)

-Kyle
Title: Re: Twisted Sick Robotics
Post by: seangcxq on July 11, 2015, 10:03:12 pm
well no weight for wheel guards again but its done. I bent the shaft a slight bit in testing so I am making a spare now and the weight side of the drum is giving in to the massive Gs and bowing out. crazy, didn't think I would see this much elongation from just the Gs. all well just needs to make it 5~ fights.

(http://i.imgur.com/eovXZZs.jpg)
(http://i.imgur.com/P9cJbPe.jpg)
(http://i.imgur.com/RHjQKfH.jpg)

-Kyle

Looks great. What diameter are the shafts for the wheels? Is that a dead shaft with a bearing in the wheel or a live shaft?
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on July 11, 2015, 10:19:11 pm
dead shaft with a nylon hub. the nylon acts as its own bearing surface.
Title: Re: Twisted Sick Robotics
Post by: Badnik96 on July 11, 2015, 11:58:44 pm
Certainly will be fun to watch (and hopefully tear apart!) in the arena.
Title: Re: Twisted Sick Robotics
Post by: Jeff Gier on July 12, 2015, 08:55:59 pm
That drum design is really quite ingenious!  Good luck!
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on July 14, 2015, 04:04:16 pm
well massive is done

(http://i.imgur.com/aNtkPjF.jpg)
(http://i.imgur.com/L0AGxmr.jpg)
Title: Re: Twisted Sick Robotics
Post by: Infernaltank on July 14, 2015, 06:02:09 pm
What needed to be done to it?
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on July 14, 2015, 06:16:24 pm
P60s
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on July 15, 2015, 10:27:44 pm
Man that bot is big.

Glad you got a mantis together. Mine still isn't completely done. Looks like I'm taking Friday off work...

-Zac
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on July 16, 2015, 07:24:20 am
this feels strange, i'm packed and you're not ready...
Title: Re: Twisted Sick Robotics
Post by: RevRobots on July 16, 2015, 07:26:49 am
Zac is not the only one...

Adam
Revelation Robotics
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on July 16, 2015, 07:30:19 am
I made the original Arcbeetle two days before bot blast. I remember working on the frame at 3 in the morning the day of and I wired it at the event.
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on July 16, 2015, 10:19:11 pm
this feels strange, i'm packed and you're not ready...

Yeah, it feels strange, like a lot more stressful than I'd like. I had a middle-of-the-night build session to finish the first Eclipso too, and that bot was garbage.  It would be a big drag if all the work I put into this bot ended in disaster because I was too lame to start on time. I'm hoping to button down a lot of details tomorrow. Still won't be the kind of testing I'd like, but it should be a lot better than it is now.

-Zac
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on July 24, 2015, 06:24:09 pm
I have officially purchased parts for a featherweight Ripto. be warned
-Kyle
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on July 24, 2015, 10:50:10 pm
Excellent, what are you using for drive and weapon in it?
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on July 25, 2015, 06:59:39 am
for the weapon I am using Misfortunes set-up. A 2600w 1500kv 4474 inrunner (https://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idproduct=51847), I would be able to pull super crazy rpms but its got lots of power.

For the drive I am experimenting with esc flashing. I will be trying out 70a redbricks flashed with reversible simonk firmware. Gene uses flashed afros in One Fierce Bush Wacker and says he prefers the feel and responsiveness of them over the 25a trackstars so we are going to give it a go. The redbricks will be pumping juice to some 1500w 1100kv 3674 inrunners (https://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idproduct=24961) that will be matted to 16:1 p60s. these should give me ~8.8mph .2 faster then the hobby.

-Kyle
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on July 25, 2015, 02:22:19 pm
been shaping some clay. some many things yet to change but the general idea is forming.
(http://i.imgur.com/hdaqlcm.png)

-Kyle
Title: Re: Twisted Sick Robotics
Post by: Ellis on July 25, 2015, 09:22:15 pm
Sweet. Will the P60s handle that much torque?
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on July 25, 2015, 09:46:14 pm
Looks great.  The gears in the p60 boxes are pretty robust. I think if you can keep the pinion on the motor then the gears in the 16:1 box and even the carrier pins can likely handle the power. Not looking forward to facing it though.

-Zac
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on July 25, 2015, 10:09:04 pm
Looks nice. Didn't realize Ripto was that slow, Minor Threat (With favorable winds and wheels...) and Uppercut go ~12.5 and I think Knockout was faster.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on July 25, 2015, 11:54:59 pm
they all need a full 6 feet of run-up to hit that speed though. ripto needs 2 1/2 - 3 feet.

Im not to worried about the p60s, the wheels should slip long before its a problem. Josh has 18v 775s with i think 8" wheels on his sportsmen without problems.

I still have some major changes before im ready to start finalizing parts with triangles and what not

-Kyle 

 
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on July 26, 2015, 01:16:12 am
More like 4-5 feet, but yeah. P60s should hold up, you'll probably want to support the back of the motors somehow though, they'll have quite a bit of inertia and P60s have fairly weak mounting provisions. By the way, I did get to test those triangle to weapon mount supports on Minor Threat against a big bar spinner, and it worked pretty good. Those are way longer and a shallower angle than I was willing to make mine, so I'd imagine pretty much everything will just skate off :)
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on July 26, 2015, 07:24:20 am
thats the plan.
-Kyle
Title: Re: Twisted Sick Robotics
Post by: AlexH on July 27, 2015, 04:37:02 pm
been shaping some clay. some many things yet to change but the general idea is forming.
(http://i.imgur.com/hdaqlcm.png)

-Kyle

i do not like where this is going...
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on July 27, 2015, 09:50:36 pm
I got my motors for the drive today. they make me happy
Title: Re: Twisted Sick Robotics
Post by: Ellis on July 28, 2015, 08:33:01 am
If the P60s can't handle it I may have an alternative. Pretty sure a few people have shredded P60s in trying to fit HP brushless motors which is why I mentioned it.

Anyway pics pls, thx.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on July 28, 2015, 09:04:17 pm
OK pile of goodies

big blue is the weapon motors same that is run in misfortune. the black long cans are the new drive motors. pinky is ripto ultimates weapon motor.
and then there are the RB 70s. I have a RB 80 next to one for comparison. for some reason the 80 doesn't have the massive 1/8 alu heat sink making the 70s larger. I think I will downsize that when I re shrink them.
(http://i.imgur.com/xS0fE3d.jpg)

-Kyle
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on July 29, 2015, 09:28:44 pm
Looks good. Have you flashed the RBs yet?
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on July 29, 2015, 09:39:06 pm
waiting on the usb adapter. HK didn't carry them
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on August 12, 2015, 03:23:14 pm
well 30lb Ripto has been back burner-ed for the time being, but its for a good cause. With being asked to run an event at my local fair I have decided to finally build a steel frame for my box. time to look professional.

The steel should be coming in tomorrow and the electric latches for the pits should be show up it about a week. I'm not too worried about getting the pits working this time around but i'm going to try. The intent is for each driver to have the option when they ready of no pit, pit open after the first 30s, or pit open in the last 30s. but getting it built takes priority.
(http://i.imgur.com/wH1SnTH.jpg)   

-Kyle   
Title: Re: Twisted Sick Robotics
Post by: TeamAstroBot on August 12, 2015, 04:03:21 pm
May I suggest a modification to the rules? If the fight is non-weaponed bot vs non-weaponed bot, the pushouts to be required.

Also, what's the width of the push outs? Some bots are too wide to fit, (**cough** Pizza party / re-gift **cough**). How would the pushouts be handled under these circumstances?
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on August 12, 2015, 04:24:27 pm
the plan was to have a override for wedge vs. wedge matches so that both pits open after the first 30 seconds. you are right on point with that haha.
an the pit is 18"w and 16"h

-Kyle
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on September 26, 2015, 07:18:32 am
ah right so I haven't done much bot work in the past month but I have been cleaning up my shop from the sad state it was in.

so here is the shit gutter shop all cleaned up.

first things first I made material racks. Got all my metal of the floor and organized and got all my wood off the floor and organized.
(http://i.imgur.com/ORkITT6.jpg)(http://i.imgur.com/MvDg2XG.jpg)
(http://i.imgur.com/fyPpLsj.jpg)(http://i.imgur.com/2sxY3vA.jpg)

I also made bins for all my short stock.
(http://i.imgur.com/OHOZK2W.jpg)(http://i.imgur.com/jwq3KHh.jpg)

Heres everything is all cleared up, look the shit gutters are all covered up!
(http://i.imgur.com/BPzkZQ9.jpg)(http://i.imgur.com/59NfjCh.jpg)
(http://i.imgur.com/dFvpISY.jpg)(http://i.imgur.com/yddekvU.jpg) 

yesterday day was drill bit day. I have several sets that are missing bits here and there from furious robot building. So I had to sharpen and restock all my sets.
(http://i.imgur.com/lxWfY3Y.jpg) 

-Kyle
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on September 27, 2015, 07:14:11 pm
Just think of all the robot building you can do with such an organized shop!

I'm envious of the material racks. Mine are just kinda leaning against a shelving unit waiting for me to kick them over.

-Zac
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on September 27, 2015, 09:11:49 pm
well you were a lucky one that saw first hand the mess that my shop was. the gutters being covered alone changes everything.
-Kyle
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on October 13, 2015, 03:29:28 pm
what are everyone's thoughts on bot hockey around these parts?   
Title: Re: Twisted Sick Robotics
Post by: RevRobots on October 13, 2015, 03:43:52 pm
I might give it a try.

Adam
Revelation Robotics
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on October 13, 2015, 06:04:44 pm
I could do hockey or sumo - but probably not both.

-Zac
Title: Re: Twisted Sick Robotics
Post by: Badnik96 on October 13, 2015, 07:48:17 pm
I'd give bot hockey a try.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on October 14, 2015, 03:51:00 pm
I would do it separate from the other event stuff. just have been in the mood to try some bot hockey. but it requires bots and drivers 
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on October 27, 2015, 08:29:44 pm
The next event for me is MASSdestruction in December. With that said I been back and forth on what I want to build for it. I have been thinking of making a beetleweight saw blade robot. I really want to try it and I think I can make it work. At the same time I want to make new disc for the beetleweight Ripto and get it back up and running properly.

thoughts?
(http://i.imgur.com/zuOzcoF.png)
(http://i.imgur.com/H7q0riG.png)
(http://i.imgur.com/6rXhYmi.png)
(http://i.imgur.com/NgEDb1P.png)
(http://i.imgur.com/0Yd3yz1.png)
(http://i.imgur.com/aYjPwCN.png)

-Kyle
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on October 27, 2015, 08:33:07 pm
Looks fun, I'd probably add something like hinged forks on the front to kinda immobilize the other robot. Do you have to do more than a disk? If that's all, why not both?
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on October 27, 2015, 08:38:28 pm
well I have old frames and bits that are all in good shape but I want to redo everything, streamline stuff and start fresh

old stuff for reference. I'm switching to fingertech for the weapon.
(http://i.imgur.com/IECkxRU.jpg)

-Kyle
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on October 27, 2015, 08:50:38 pm
Ah, I see your pictures now. For some reason only the first one with the sawbot loaded before. I like the new look for Ripto, much more similar to the hobbyweight. One thing I noticed on Minor Threat is that the slightly sloped sides didn't seem to do as much as the fact that the titanium was much harder than the aluminum and plastic sides I'd used on older bots. That alone made a lot of hits not bite well enough to really throw the bot. I like the wedge going all the way across, but I feel like the little section in the middle might get beaten up pretty easily, since it's such a small cross section.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on October 27, 2015, 09:14:57 pm
the UHMW isn't going to offer the same level of deflection as ti but it's still annoying to hit. The real reason I am using UHMW is because it wont fail. hard armor here has a few weak points that it can break at with a good horizontal hit. The UHMW will just absorb it and mar a bit, no big deal and I don't loose one sides drive. As for the wedge. This is something I have always been apprehensive about. I have always been to worried that the middle bit would fail and cause weapon failure to follow. But I'm finally ready to try it, the frame strengthening benefit is worth the risk. The thin bit is .75 wide and there is .1875 clearance all-round. If the worse should happen I already have the split wedges made and ready to drop in, so no big deal.

-Kyle     
Title: Re: Twisted Sick Robotics
Post by: Lucas Grell on October 27, 2015, 10:30:07 pm
Good point. I'd consider making the titanium sit back a little from the edge of the UHMW, so that vertical hits near the edge won't catch the lip and bite.
Title: Re: Twisted Sick Robotics
Post by: BranYoung on October 29, 2015, 07:39:30 pm
Shouldn't that saw blade be very fine so it doesn't bind? Also, are you moving the weapon motor up onto the arm for the weapon or keep it at the base. I notice you have two pulleys at the base of the lifter and I was wondering if you were planning on dual lifting power or 1/2 spinning half lifting.
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 22, 2016, 10:16:47 pm
Ok so I have gotten a lot of question this weekend about the new Big Ripto. So I'm going to take a moment and and try to answer as many as I can.

Big Ripto
(http://i.imgur.com/l8y2dOy.jpg)
 
Ok to start with the breakdown,

the entire frame is 3/16" ar400
the base .08 4130

all welded up with top plates and rail supports brings it to 13.5 lbs
 
the weapon is 7/8" thick s7 with a 9" spinning dia. mounted to its hub assemble brings it to 7 lbs 15.5 oz

this leaves me with 8 lbs 9.5 oz for wheels and guts, so let's talk about wheels and guts.

first off the wheels. 
(http://i.imgur.com/ge3VAAO.jpg)

the wheels are actually very simple to make. I purchased some 60A Polyurethane rubber tubes of mcmaster. Now I would recommend when selecting tubes that your wall thickness never be more then half the width of your intended tire. Otherwise the tire may be prone to rolling off the hub with strong horizontal forces. After I received my rubber I slide it over a piece of aluminium round stock and used it as a arbor in my lathe. Then I mounted a exacto to my tool post and squared it to the chuck. With a nice slow speed the knife cuts it like butter. Now that I have my blanks I grabbed some UHMW round and made hubs with a flange on one side, the flange should be over at least half the wall thickness to propperly retain the tire. The Acetal pulley acts as the flange on the other side when the whole thing is sandwiched together. Now I would recommend .05" over size on the hubs dia for every inch of tire dia and .02-.03" under size on the width. this really helps seat and clamp the tire to keep it from slipping, It also makes an over sized tire, so plan accordingly. I was planing on using Loctite 406 to glue the hub and wheel together when I assembled them but I didn't order it in time so a quick trip to walmart turned this up (http://www.amazon.com/Loctite-1363589-4-Gram-Control-Adhesive/dp/B003Y49R7G) and It hasn't failed yet so I'm content with its performance.

alright, the guts.

Right now the bot runs off a 6s pack of a123s. I designed for a123s because I wanted the option to run it at FI. I may try some 8s lipos next year for moto, undecided as of yet.

For the weapon motor I am using a KB 44-74 Brushless Inrunner 1500KV. (http://www.hobbyking.com/hobbyking/store/__51847__KB_44_74_Brushless_Inrunner_1500KV.html) I'm not sure how it might feel about being pushed to 8s but it has size able alu mounts to sink heat and the frame is pretty open for air flow from the disc so I will be testing it out in the future. The speed controller for this is not a definitive component yet. I have some things I would like to try out before I decide on a permanent controller.

The drive
(http://i.imgur.com/ILzxcyh.jpg)

The motors are 1100kv B36-74-15-L Brushless Inrunners (https://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=24961) which I mounted to a 500 series 16:1 p60. There are some hotter wind and more powerful motors on hobby king but this one would give me a matching speed to my hobby which is what I wanted.

the speed controllers for them are 70a Red Bricks (https://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=64843) that have been flashed with simonK. there are a couple of setting to play with there but more on that later.

I plan on making a really simple simonK for dummies video that shows the basics of the setting and tools to flash a speed controller this week. I know Its intimidation if you are unsure of what you are doing so I want to try and make it more accessible for everyone.

alright i'm out for now. 
-Kyle
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on February 22, 2016, 10:22:33 pm
This is really great info. I look forward to seeing the tutorial on the simonk stuff because people have been talking about it for a long time and I assume it was mentioned on Facebook but of course has scrolled off the back and I never saw it.

It was really great to hang out with you and the gang this weekend. You really helped me out with working on the shell spinner right before you mopped the floor with me :)

-Zac
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on September 23, 2016, 04:18:07 pm
Simple up-date. Just adding some glory shots of the paint job of Big Ripto. For historical purposes.


plus here is a inside look of the layout
(http://i.imgur.com/6DMdLkq.jpg)(http://i.imgur.com/KnLQk4w.jpg)
(http://i.imgur.com/TeWzawf.jpg)(http://i.imgur.com/ZyewEo9.jpg)(http://i.imgur.com/ZdOh1BF.jpg)

-Kyle
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on October 24, 2016, 09:22:51 pm
Well I have been playing with cad lately. Mostly messing with a new 12lb Ripto design. One of the major things I wanted to change was how damn wide the bot is. Here is where I am at with it.

A lot of big changes and a bunch of little ones. Originally I was going to use some of my short can 3645 inrunners on p60s for the new drive but I decided I no longer wanted the front wheels hanging out of the wedge. This is where a 28mm wang box will come in. It will require some mods but will allow me to sneak my front wheels under the wedge. This along with custom wheels, fingertech pulleys, shorter batteries, and aluminum weapon rails will allow me to bring the width down from 17.5" to 14" 
(http://i.imgur.com/BpAnlKC.png)

thoughts?

-Kyle
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on October 24, 2016, 09:31:12 pm
Wheels behind the wedge is definitely a good thing. It looks like you ditched the pretty angled front sides though on the wedge, and I think that's a huge strength when facing a big horizontal.  Is that another change you're planning to make or did you just drop the thick plastic sides in there because it's way easier to draw?

-Zac
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on October 24, 2016, 09:42:22 pm
Its a change I am considering. While the angled sides are amazing with horizontal spinners any vd with a wedge will trash them. I am thinking this will be much better over all and they will be super easy to replace. I was considering just making both and swapping as needed but it just ends up being too much work and it's not really my style. I still have to narrow in where the new weight will be and if I can run 10 gauge ar for the wedge.

-Kyle
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on October 24, 2016, 10:01:06 pm
It sure is easier... but I've gotta say those slanted ones you have on big ripto are the reason I don't think my bot can beat yours more than 1 in 10 times. And I'd hate to see my bot or the arena if we went head to head 10 times....

I'm a big fan of thick UHMW side plates, but I find it amusing that you switched to thinner metal for the weapon supports but then thicker plastic for the sides :)

-Zac
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on October 25, 2016, 07:44:59 am
well if I can do a steel wedge, I will also be able to do those nice gussets and bolt them to the weapon supports. I don't think I could fully mirror the 30s compound side angles though because it would be very heavy. I was playing with a shuffling idea though. 6 pounds is a lot of armor...

-Kyle
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on October 25, 2016, 04:06:52 pm
So in non-moto prep related news I started working on one of the bots i'm going to take to massD. A mini Mingi. I using what is mostly the same hammer setup. belts and pulleys are the same but i'm going to drive in with the 16:1 brushless planetaries I use for my mantis drive train.

(http://i.imgur.com/xeKHEdu.jpg)

-Kyle
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on October 26, 2016, 09:13:22 pm
Well I have done a little bit more work and now I have a rolling chassis. Another day and I should have it all finished up.
I just need a name. It is a mini mingi im already in a pun corner.

(http://i.imgur.com/IfmQlNp.jpg)

-Kyle
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on November 16, 2016, 09:38:57 pm
Better late then never. Here are some finished shots of Dain, beetleweight hammer bot. It actually ended up hitting more legit then the mantis.
aside from some clearance issues which was my own fault it was great. I think it went 3-2 in the end of the day but who remembers. It survived a 30 and that's what matters. 

(http://i.imgur.com/33Lg0je.jpg)
(http://i.imgur.com/CgcZQuS.jpg)

-Kyle
Title: Re: Twisted Sick Robotics
Post by: Team whanton2 on November 17, 2016, 07:49:43 pm
OMG that is so cool, i want one.
Title: Re: Twisted Sick Robotics
Post by: BranYoung on January 29, 2017, 12:04:20 pm
How have the Fingertech pullies worked for Ripto Ultimate?
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on January 29, 2017, 04:29:54 pm
I pulled it from moto so i would have time to help out and run the show. So i haven't done any real building with it.

-Kyle
Title: Re: Twisted Sick Robotics
Post by: Badnik96 on January 29, 2017, 11:49:04 pm
awwwwwwwwwwwwwwwwwwwwwwwwwwwwwww ;-;

i was really looking forward to watching ripto kick butt again
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on January 30, 2017, 07:30:59 am
the 30 is still in
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on January 30, 2017, 07:38:49 am
And we're all afraid of it.

-Zac
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 23, 2017, 09:41:01 pm
This post is just to update where parts can be sourced for Big Ripto as hobbyking NO LONGER CARRIES THINGS I LIKE THE MOTORS I USE.

The exact equivalent drive motor Tacon 3674-540XL-15T Brushless Motor 1100KV (http://www.hobbypartz.com/96m216-3674-1100kv-15t.html). Better yet it's on sale, it usually runs 36$

The closest equivalent weapon motor Tacon 4475-12T Brushless Motor 1200KV (http://www.hobbypartz.com/96m222-4475-1200kv-12t.html). It's down some kv from what I run but that's not a big deal. the only difference I don't care for is a 5mm shaft instead of 6mm. But this also means you can stuff it into any 775 capable gearbox, like the BB150....

-Kyle 
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on March 11, 2017, 09:14:53 am
You did an awesome job on the videos this year. The mixed-speed edited versions of the heavy hitter fights are really well done and are getting a lot of good comments from the people I send the links to. I started a new job in January and last week was my first company-wide robot demo. They enjoyed it so much (in part because of the videos you created) that they're going to have me do another one for our customers at the annual conference we host in April.

I know it takes a ton of time, but it really is a big deal for the builders.

-Zac
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on March 11, 2017, 08:23:39 pm
That's awesome to hear, I'm glad you are getting some mileage out of them. I have ~25 let to edit.

-Kyle
Title: Re: Twisted Sick Robotics
Post by: rcjunky on March 11, 2017, 11:05:35 pm
High speed of some of the beetle fights would had been cool, but not as cool as big bot big hits for sure
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on December 26, 2017, 08:51:09 pm
OK I have been keeping this bot pretty quite up till now but I feel the need to be part of a real community again. NOT LIKE FACEBOOK.

So for motorama 2018 I decided I wanted to build a serious sportsman class robot and I wanted to make it some what thematic.
So here is Roger Lord Mortimer. (or a rough cad at least)
(https://i.imgur.com/BghQV2U.png)
(https://i.imgur.com/YvFfvWA.png)

Full on brushless axe bot. The electronics will be 2 70a redbricks for the drive and 2 200a redbricks for the weapon. The drive motors will be 2 1100kv 3674s on 1:16 p60s. And the weapon will be 2 1400kv 4465s through a combination block 13:1 bb150 gear box. should be a good time.

(https://i.imgur.com/dJncLCu.jpg)
(https://i.imgur.com/aAmKfR6.jpg)

-Kyle
Title: Re: Twisted Sick Robotics
Post by: Infernaltank on December 26, 2017, 09:09:44 pm
What's the weapon going to be made of?
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on December 26, 2017, 09:11:48 pm
its going to be cut from 1/4" ar500

-Kyle
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on January 03, 2018, 08:31:47 pm
You have me seriously worried about my top armor.  I've got a couple small updates to Magneato planned, but nothing that will be happy about anything in your drawing...

-Zac
Title: Re: Twisted Sick Robotics
Post by: satacoy on January 09, 2018, 06:50:38 pm
Kyle (and Zac, if he's listening):

Rumors are that you typically bring a drill press to the event.  Will that be the case this year?  The Colorado guys are starting to plan on what tools to bring, and a drill press would be very helpful, yet difficult to bring with us.

Zac, the story is that you typically have an arbor press.  Same question, are you bringing it this year?

Thanks!

Pete - Team Cosmos
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on January 10, 2018, 06:36:42 am
Yeah, I can bring an arbor press this year.

-Zac
Title: Re: Twisted Sick Robotics
Post by: satacoy on January 10, 2018, 12:02:30 pm
Great!  That was the item we were most concerned about.  Thanks!

Pete - Team Cosmos
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on January 12, 2018, 04:19:56 pm
And I can bring a drill press. Anything else big I should bring? I have a secret pass so I get to drive right in.

-Kyle
Title: Re: Twisted Sick Robotics
Post by: satacoy on January 13, 2018, 05:02:31 am
Awesome, thanks!

I think the rest of our big items are very likely to be there, since they're so common.

Dremel
Clamps
Hammers
Hacksaw
Vise
Heat Gun

Pete - Team Cosmos
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on January 13, 2018, 12:31:57 pm
Well  I received my steel parts from discount steel the other day. Just a tiny bit of welding and everything will be ready. The balance point of the axe right where the little x is. After handling it a bit I decided to just save some money and effort and just run one of the large motors for it. One motor was enough to swing a very heavy and long chair, it will do just fine here. plus I was having minor concerns about the two motors syncing up. With that change I have made the bot a little shorter just to save some material.
Here is where I am at now.

(https://i.imgur.com/1PzkWNm.jpg)(https://i.imgur.com/wNwJu2x.jpg?1)
(https://i.imgur.com/VQwMB6n.png)

-Kyle
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on January 14, 2018, 09:05:17 am
I really like the counterweighted axe idea.  I see you borrowed my cleat idea for the outriggers on the back of the robot. I'm very curious to see how much kickback you get with this bot.

-Zac
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on January 14, 2018, 10:51:20 am
I feel the cleats are a must with this bot. I just couldn't work out the design to be long enough for what I wanted.

-Kyle
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on January 14, 2018, 11:05:28 am
I'm curious to see if they will provide the benefits in this geometry that you need. With the flipper I'm throwing a bunch of weight forward so the bot tries to kick pretty much exclusively backwards, but with the hammer head rotating around the interaction will be much more complex. I think it will help a lot to prevent the bot from kicking backwards, but I'm curious to see how much it will help to keep the front down.

I like the gratuitous weight utilization in the shield on the front :)

-Zac
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on January 14, 2018, 04:27:41 pm
The shield was just a dumb stylistic idea I had at first. But I think it's going to be great at blocking other hammers as well as a little extra ballast.

-Kyle
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on January 19, 2018, 08:54:02 pm
got my mcmaster order in the other day and started cutting material. I started with roughing out the frame bits of 1/2" UHMW. I then cut out a bunch of blanks for the wheels. I'm trying the bike tread wrap on UHMW rims thing. The blanks are 3" dia and i'm hopping for 3.5" with tread but my yellow tire has not arrived in the mail yet. The rims machined up real easy on the lathe, the inside boring was a little annoying but the finished product looks good and comes it at nice and light 6oz. The last thing I worked on was the main weapon hub. I turned it to size and bored it out for bushings.

I probably won't get to work on anything until this time next week. I'm flying out to Vagas for all of next we for work.

Pictures:
(https://i.imgur.com/L24mxbq.jpg)(https://i.imgur.com/fzNfh0U.jpg)

(https://i.imgur.com/0p12g6Q.jpg)(https://i.imgur.com/wRAQoXr.jpg?2)

-Kyle
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on January 20, 2018, 09:01:36 am
How did you do the internal cut on the UHMW? Rotary table on the mill would make it a breeze, but on the lathe isn't it hard to keep the chips cleared out inside the bore? Did you just make a square HSS cutter? I really like the idea of that kind of wheel.

-Zac
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on January 21, 2018, 01:14:07 pm
I just used a three point boring bar. It gave a nice large chanfer on the inside corners. I set up my dials so I know what dimensions I am aiming for and just blind bore keeping an eye on my numbers. I would have preferred the do it with the rotary table but the set up time would have taken longer then I wanted

-Kyle
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on January 21, 2018, 03:09:51 pm
I'm not sure I understand. Remember, I'm a computer geek, not a machinist :). Were you using a mill or a lathe? I have a single point boring bar for my lathe, but I can't see how the three point version would work in a mill without a rotary table. 

-Zac
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on January 21, 2018, 09:48:07 pm
I used a lathe. And the boring bar tip is shaped like a triangle.

-Kyle
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 01, 2018, 09:11:46 pm
Sat down and finished up the wheels today. I used a combination of contact adhesive and screws to attach the rubber. The contact adhesive should help keep the rubber from moving around and opening up holes around the screw heads. Over all i'm pretty pleased but it will come down to performance. With the rubber and sprockets they gained 3.5 oz. not to bad for the size.

(https://i.imgur.com/Yu2lPBL.jpg)(https://i.imgur.com/rEArsnp.jpg)

-Kyle
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on February 05, 2018, 09:05:51 pm
What adhesive did you use? And how much diameter did the tread add? They look grippy :)

When my drive setup is working, it's way more power than the wheels are putting down. I long for more traction, but don't have any weight or time to do something like this. Perhaps next time if it works well I can, uh, rip off? your design

-Zac
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 07, 2018, 11:00:27 am
it added about 7/16" to the dia of the plastic. it all depends on the tire you pick out though. I wanted yellow though so I just grabbed something cheap off of amazon. the contact adhesive I used is called Dap (https://images-na.ssl-images-amazon.com/images/I/81-e9WQNlmL._SL1500_.jpg). I'm not sure how well it will do with the UHMW but I think its the best non specialized option. 

Kyle
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 09, 2018, 11:21:56 pm
I have been pretty busy working on the bot over the last week. I squared up all of my frame bits and then located and drilled all of my holes. My pretendo bot was getting pretty strong now. I then shaped the reliefs for the wheels in the outside rails. The drive pods are looking very good and feeling very strong. I also sharpened the axe. I'm pretty much at the point where all I have to do is make the top and bottom plates and wire the thing.

(https://i.imgur.com/fM0FkaE.jpg)(https://i.imgur.com/3qiMdpU.jpg)
(https://i.imgur.com/4KWnLAN.jpg)

-Kyle
Title: Re: Twisted Sick Robotics
Post by: zacodonnell on February 10, 2018, 07:20:15 pm
It's looking really mean. Are the frame rails .25" 6061? With the standoffs I'll bet it is really stiff and solid when you tighten it all down. Mine is like a bowl of spaghetti in comparison :)

-Zac
Title: Re: Twisted Sick Robotics
Post by: Koolaid64 on February 12, 2018, 07:44:46 am
Yup .25 6061. It's very brick feeling with the top and bottom plates on it. All I have left is to wire it.
(https://i.imgur.com/P82RK1p.jpg)

-Kyle