Thread: JVN Build Tip: CIM Pinions
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Unread 19-01-2011, 16:43
sanddrag sanddrag is offline
On to my 16th year in FRC
FRC #0696 (Circuit Breakers)
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Re: JVN Build Tip: CIM Pinions
Another great tip John. I've had to remove far more than my fair share of CIM motors and it's a real pain every single time the pinion is not smaller than 0.75" OD. However, sometimes I don't like using 12 tooth 20DP gears because I believe they are undercut. Not a big deal really, but I just feel the 14 tooth gears mesh a bit nicer. I really wish we could get a bigger boss on the face of the CIM, like 1" maybe.

Also, for the pinions, which see the most cycles of operation, I like to use Martin S20XX series gears, as they're slightly harder and I've experienced some odd wear issues with the AndyMark pinions. Of course, if I wanted to I could probably harden the AndyMark ones.
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Teacher/Engineer/Machinist - Team 696 Circuit Breakers, 2011 - Present
Mentor/Engineer/Machinist, Team 968 RAWC, 2007-2010
Technical Mentor, Team 696 Circuit Breakers, 2005-2007
Student Mechanical Leader and Driver, Team 696 Circuit Breakers, 2002-2004
Last edited by sanddrag : 19-01-2011 at 16:45.
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