Quote:
Originally Posted by Joe_Widen
I know this doesn't directly apply to your question, but when your designing the crab drive leave like .003" inbetween gears. If you plan for them to mesh perfectly, youll find they grind a bit and dont spin that well.
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Right-o. But that's not just for swerve drive.
That distance, or looseness between gear teeth is called backlash.
http://www.engineersedge.com/gears/gear_backlash.htm
ALL gears require some backlash to allow optimal function. Too much causes other problems. Normally, if you buy a set of small feeler gages you can set your backlash consistently. You always want some.