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Unread 11-05-2015, 03:21 AM
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Aaron Ng Aaron Ng is offline
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FRC #4159 (Cardinalbotics)
Team Role: CAD
 
Join Date: Apr 2015
Rookie Year: 2014
Location: San Francisco
Posts: 16
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110ft/s (75mph) robot design

Awhile back, I saw team 868's Totebot, a robot in a tote that drives at 50mph. I was inspired by their video to design a robot that can go as fast as possible using only FRC legal parts.

I have named the design: Sanic

It has 6 cims, geared at 34-50 at low, and 50-34 at high. achieving 35mph and 75mph respectively.

Amazingly, the math all works out, for the amperage at least. By limiting the amperage for each cim at startup to 40, and then bumping it up to around 50 when shifting to high, it can reach 75mph without the 40 amp snap action cim breaker, or 120 amp main breaker popping. It comes very darn near to dying, but it doesn't.

I'm not a electronics guy, so I'm not sure if there is anything else that will go wrong (there probably is) except for the roboRIO browning out, if that is the correct term.

Of course, this isn't something that I will ever build. It was a fun thought experiment, and a challenge, to see how far I can push the equipment that we have.

And before anyone asks, no. I don't have a way to stop it.

Thoughts? Questions? I would love to hear what the community thinks of a crazy design such as this.
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