Originally Posted by
scott967
Maybe they develop a continuous variable shift system that can give you any possible gear-inch between two extremes. Then you just need to spec the extremes.
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There actually is a shaft drive system that uses a single ring with infinite number of gearing possibilities between two extremes. No indexing just friction. Twist it one way for taller gearing and the other for lower gearing. There's a utube vid of it in action. Because of the few moving parts involved aside from the drive shaft it will probably be the next greatest thing once the bugs are worked out of it.