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Unread 31-01-2008, 17:46
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wireties wireties is offline
Principal Engineer
AKA: Keith Buchanan
FRC #1296 (Full Metal Jackets)
Team Role: Mentor
 
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Re: toughbox gear/shaft slippage

"I'm talking about a 140 lb robot with 2 CIMs per side and ultra grippy tires driving at a top speed of 15 fps across the field" ... thats us we hope but more like 12fps!

We see your point about the tolerances. If we have -.008 on both surfaces, that gets sloppy pretty quickly. And it seems our keys/slots tolerances are contributing the overall slop as well. Adding in the chain tension slop, it is enough to drive the encoders nuts now and then. We have to filter it out.

Thanks!

Last edited by wireties : 31-01-2008 at 17:51.