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Unread 30-04-2014, 10:56
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Stephen.Yanczura Stephen.Yanczura is offline
opportunist
FRC #0195 (Cyberknights)
Team Role: Mentor
 
Join Date: Jan 2004
Rookie Year: 2001
Location: Southington, CT
Posts: 80
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Re: I might be missing something with a 6 cim drive...

On our practice bot we drove the robot up to a cement wall and had a mentor apply his weight to the top of the bot upping the traction big time. I had the driver lay on the stick full power into the wall effectively stalling all six CIMs at 100%. Fresh battery, new CIM motors, talon motor controllers.

The main tripped in ~8 seconds and for each successive test it tripped sooner and sooner, I stopped after it was tripping in ~5 seconds.

We are geared 5.95:1 in the box and 1:1 (belts) to the 4" HiGrip wheels. (I did some speed tests using encoder logs and we were seeing 12-13ft/sec max robot speed on slightly worn wheels).

We never tripped a main breaker during a match on the competition bot and to my knowledge never tripped a breaker during an estimated 200 hours of driving the practice bot (same breaker I tortured above).



YMMV
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stephenyanczura
team 0195 | 2010-Pres. | cyberknights | Conn. | mentor
team 0195 | 2006-2007 | cyberknights | Conn. | mentor
team 1660 | 2005-2006 | harlemknights | NYC | mentor
team 0195 | 2001-2005 | cyberknights | Conn. | student



s.j.yanczura@gmail.com