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Messages - Jeff Gier

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31
Progress Reports / Re: Team Cosmos - Angry Accountant - A New Beginning.
« on: August 04, 2015, 11:47:20 am »
It looks like a beast!  I see a lot of features coming from lessons learned at AVC.  This is gonna be good.

32
Progress Reports / 17:1 maxon test
« on: August 04, 2015, 12:54:17 am »
My (partially) home-made 17:1 maxons work!  What a relief that is.

https://youtu.be/g4_CBZprH14

33
Questions / Re: Looking for powerful beetleweight motors
« on: August 03, 2015, 04:30:17 pm »
I have never used their gear,  but it looks well made and they are a contributing team in the WAR area:

http://www.shop.rovparts.com/Robot-Parts_c22.htm

they sell both a upgraded B series motor and a 2 ch Esc.    I will 2nd the "avoid the sabretooth" advise.

TT

I'm very happy to have found this website after seeing the posts on facebook!  s7 b19 and 40 dollar scorpion seems awesome!

And I've added it to this list http://sparc.tools/forum/index.php?topic=144.0

34
Progress Reports / Re: Team Mechanical Advantage
« on: August 03, 2015, 04:13:30 pm »
This weekend I did up a new drum with bearings this time around!  Also made a few 17:1 maxons. 
 

35
Questions / Re: Looking for powerful beetleweight motors
« on: August 03, 2015, 09:40:17 am »
I think you will have trouble actually ordering those banebot gearboxes.  They do this funky thing where they don't list them as out of stock until you try to add them to your cart. 

Here are some motors that appear very similar to the B series gearboxes: https://www.servocity.com/html/3-12v_precision_planetary_gear.html 

Also, I've had half a dozen sabertooths (2x5 and 2x12) fail on me and not even close to that number of any other controller.  You may be better off with something else. 

The kitbots 1000rpm beetle motors have a lot of strengths in that they are cheap and well tested.  You can expect them to last a long time if you use foam wheels and wheel guards.  And if you are pressed for cash, you will be able to order more spares of the kitbots motors as well. 

36
Progress Reports / Re: Team Mechanical Advantage
« on: July 31, 2015, 04:04:31 pm »
Step 1 on my "A combat robot building guide for average joe" is a pen and paper sketch.


37
Progress Reports / Re: Team Mechanical Advantage
« on: July 30, 2015, 06:26:33 pm »
Out of curiosity, what's the drum size on DZ?

1.25" Diameter by 2" long.

Here is a nice pic of the drum with the prototype polycarbonate weapon rails.
 

38
Questions / Re: Brushless Drive - Ant/Beattle
« on: July 30, 2015, 04:49:13 pm »
Most outrunners are only supported on one end, while inrunners have bearings on both ends, and so should hold up to shock better.

I think it may be a bit of a stretch to say this.  Every Outrunner I have seen has a bearing on each side of the Stator.

39
Progress Reports / Re: Revelation Robotics
« on: July 29, 2015, 03:36:39 pm »
I just saw the Justice vs Spinzilla video recently.  It kicked some bot!  How much did the blade end up weighing?

40
Progress Reports / Re: Team Magical Lipo Fire
« on: July 26, 2015, 10:01:24 pm »
Thanks for the details!  I first saw it on Facebook and thought "could it really be so simple?".  This kind of design is right up my alley.

41
Progress Reports / Re: Viper Vertical Spinner - Antweight
« on: July 25, 2015, 04:02:18 pm »
Might be able to save a bit of weight  switching to a thin top plate.  Something like .01-.03 polycarbonate or 1/32" garolite. 

42
Progress Reports / Re: Viper Vertical Spinner - Antweight
« on: July 25, 2015, 01:54:11 pm »
Looks good!  The first thing I would do to a viper kit is switch over to a LiPo battery.   DZ has this pack in it.  http://hobbyking.com/hobbyking/store/__25503__ZIPPY_Compact_350mAh_3S_25C_Lipo_Pack.html

I am very interested in how all of this will get machined.  Keep us posted!

43
General Robotics Discussion / Re: Making your own wheels
« on: July 24, 2015, 12:08:20 pm »
I've used liquid electrical tape before.  Definitely not suitable for a wheel traction compound.  It goes on really thin and either never really dries or dries to a crust depending on the thickness of the application.

44
General Robotics Discussion / Re: Making your own wheels
« on: July 23, 2015, 01:03:36 pm »
Thanks for sharing!

45
Questions / Re: Antweight (1 pounder) size?
« on: July 22, 2015, 10:00:41 pm »
FireArrow used 1mm and it worked very well. Only thing that was able to breach it were the Dark Forces machines. Jeff's probably on the right track, I do want to make it thicker for Franklin.

I really want to see a pic of that.  It blows my mind that 1mm titanium could be cut entirely through by an ant.

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