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regarding rubber belt CVTs, I wonder if that 80% figure isn't an average over the course of operation, including during "upshifting" and "downshifting" when the belt is being heated by friction from tension changes...
Unless they're saying that the belt is slipping alot, which I could understand the 80% figure then, however, if that's the case, why not use Kevlar or something? Lasts longer, doesn't slip as much, and has less deflection under load, so that should increase the efficiency of the unit as a whole, should it not?
What about single CVT vs. Dual CVT (two ranged pulleys vs. a fixed pulley and a ranged pulley.)
I haven't seen any data suggesting a difference, though there obviously should be.
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