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So, even if spinning faster, shorter cranks can be more aero efficient than a longer crank al lower rpm?
It's really marginal but if hypothetically taken in isolation and brought to extremes, a metre long crankset spinning very slowly is in fact probably less aerodynamic than a 10 cm one spinning very fast with a lower gear ratio but producing the same speed. Or am I wrong?
Bugno
gbj_tester
And longer cranks make pushing a big gear easier. Why do so many apparently sane people still have so much trouble with the idea that crank length is largely irrelevant to power production as long as you keep gain ratio constant? If you read the Cervelo paper, you'll see that they noted the effect yet again, with riders dropping crank length by 5% self selecting 5% lower gears and 5% higher cadence :-)