Quote:
Originally Posted by GeeTwo
5:1 gear ratio with 4 inch pulleys is about 18.5 fps free speed (perhaps higher if the tread is really thick). This sounds rather fast for a tread drive, especially single speed. Even if you find a source or two of friction and eliminate it, you will probably find that you aren't able to generate much tractive force (e.g. in going over the B & D defenses) due to the high gearing.
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I forgot to mention the 24:36 belt and pulley reduction from the gearboxes to the driven (rear) Brecoflex pulley. Our calculated free speed was in the 13fps range, I think. Sorry