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Old 05-27-2009, 04:27 PM
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Default RE: AMAZING TRACKED R/C

Turning the tread from one end like that, you are basically in the worst-case from a mechanical advantage point of view. 

So you will need a great deal of torque to move the treads effectively like that, and to keep them in place when you don't want to move them.  A worm gear assembly is probably your best bet.  If you need to gear down farther, do it before the worm gear.  If the last gear in your setup is a worm gear, any slop is very minimal.