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Topics - 65fastbackmaniac

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General Robotics Discussion / 30lb Bot Build
« on: January 04, 2019, 05:12:57 pm »
Iím getting a 30lb Combat bot ready for testing at Momo Con Robot Battles and possible water jetting parts and making a more permanent one for Dragon Con Robot Battles. I was planning on adding a weapon but the weight of the bot is already up to 20lb without the chain so it will probably not have any extra weight to add a weapon. The guts of the bot are bane robotics motors geared to 26:1 and 5Ē colson wheels with 19 teeth gears for #35 chain pressed in. The speed controller was going to be a Saber tooth 2x60 but I accidentally reversed the wires to the board and it no longer works so Iím looking at possibly switching to a rage bridge instead of getting another 2x60. Input on anyone that has used a rage bridge would be great, does it work good, does it give a reliable 5v supple to the receiver or will I still have to use a separate supply to power the receiver so it doesn't loose signal? The battery is going to either be a 4 cell 35c 5000mAh or 6 cell 50c 5200 mAh.

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General Robotics Discussion / designing a 3 wheeled battle bot
« on: September 20, 2016, 11:52:50 pm »
I am designing a 3lb bot. My idea is basically a Oreo made of two saw blades (not actual saw blades but I will design the body to resemble them) from watching competitions and events I know it is possible to make a bot the drives on 3 wheels put is there a guide or could someone point me in the right direction. I have heard mention of gyro but would even know which one to look at. My design is based on 3 wheels on equal axis around a circle but I haven't figured out how to make the whole driving work. I'm trying to run it on Spark motors 33.3:1 with 3 inch wheels.

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So I just got back from the fights at DragonCon and my bot was way to slow. I know I screwed up on the gear ratio of the motors I bought so before I go and buy new motors I want to make sure I get the right ratio this time. I was running 50:1 silver sparks. It was a sumo bot kit with a spinner put on top. For the complete redesign I'm trying to make one of the 3 wheel spinner bots what would be a good ratio to go with, or what do I need to look at to decided on the motor ratio.

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General Robotics Discussion / Good 18V battery
« on: March 08, 2016, 04:38:46 pm »
To give some background I'm a decent way through on the design process of a 30lb combat bot. It drives by the back two wheel each being hooked up to their own motor (so standard steering of more power to one side to turn) and it has a spinner blade on the front for flipping/disturbing the opponent. The motors came from some 18v battery powered circular saws. So it has a total of 3 18v motors.

I'm on the hunt for a good battery with decent enough life to be full power for at least one fight if not 3 so I was thinking about a 15 minute life.

Any advice would be greatly appreciated.

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I have the ability to build a fighting arena for 1lb an 3lb combat bot fights. I live in the Savannah Ga area but I am interested in starting a group of people or club to fight and test bots at just seeing if there is any interest for this out there.

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I have previously posted on another thread about building a 30lb flipper. I have decided to go with a CO2 powered system due to size and weight. I have found most of the parts but I am currently having trouble finding a couple of the parts. I work in metal fabrication so I have checked Mcmaster-Carr and Grainger. I'm basing the system I want to build off of the Team DaVinci's forum guide http://www.teamdavinci.com/understanding_pneumatics.htm. What is really giving me problems is finding a 5 way valve to control remotely. I am able to add fittings to up or down sizes where they don't match(I know you  have to be careful as to keep the right amount of flow by not using to small of a fitting for a bigger tubing will eliminate the purpose of having the bigger tubing).
The parts I have found so far are
-Regulator - 4000 psi tank max, 125 psi flow (McMaster-Carr 7897A39)
-Cylinder - 180 lbs @ 150psi, 8" stroke (McMaster-Carr 6498K979)
-How to attach to weapon - either - Rod Clevis (McMaster-Carr 4952K101) or Steel Ball joint rod end (McMaster-Carr 60645K351)
-To mount to body - pivot bracket (McMaster-Carr 6498K563)
-Main tank - Empire Paintball 24oz CO2 tank
-Buffer tank - 3Skull Paintball 9oz CO2 tank
-Adapters for tanks - Interstate Pneumatic WRCO2-5A4 CO2 Paintball tank CGA 320 Adapter
If I can find a regulator I'm pretty sure I can make this system work. I'm kind of stubborn or else I would of given up on this flipper idea but I like the challenge of it.

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Progress Reports / Showing off my 1st Battle Bot
« on: October 25, 2015, 04:36:28 pm »
I just wanted to show of my first battle bot build/robot build. I plan to take it up to Dragon Con next year for my first completion unless I can find a completion close to Savannah, Ga.

I cheated a little and used a Fingertech Sumo bot chassis to give me a starting point but I have made some mods so it isn't a sumo bot anymore. I have to re water jet the weapon because I broke my tap drill in it but I should be able to post a video of it moving and spinning tomorrow plus I'm having a slight clearances problem with the shell but I will also be fixing that tomorrow. So after about two months of fiddling around and scrounging the internet I have came up with this design. I'm running it off of a Rhino 360 and I am using a silver spark motor to power the weapon ( a .61lb) chunk of aluminum. With the sliver spark motor I'm not so sure if it will give me the force I want but I will be attempting to test that at some point before I go to a completion. The spinning devices is attached to the motor shaft with a #4 bolt with the actual spinner having a threaded hole to hold it in place.

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General Robotics Discussion / 30lb bot motor
« on: October 21, 2015, 11:52:12 pm »
I don't know if this question has been asked before but if so please give me a link to the discussion. I have built a 3lb combat robot and I'm now looking into building a 30lb flipper  bot. In reading other forums I have saw the suggestion for using battery powered drill motors. Would that give me enough power or is there a better option.

The second question is I'm looking for a servo or mechanism to operate the flipper devices which will weight about 5 to 10 lbs so it would need a capacity of approximately 40lbs. Any ideas?

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