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So Kirk is saying that the flexed frame, returning back to neutral as the rider is still applying pressure, is directing the energy to the rear wheel... If the frame moves 5mm at the peak of the pedal stroke, and was able to flex back those 5mm while the rider was still applying pressure, the crank arm would rotate slightly. (5mm?)
That does make sense...as long as the frame is flexing back against the pedal stroke. If it can't flex back until 6 oclock, the energy would not go back through the chain to the rear wheel and would be wasted.
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