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Real Wheel Horsepower Increase Crank

This detailed $220 Scat aero crank has over .25 inch more stroke, but weighs 1.5 pounds less than a stock cast crank, partly because of the hollow big-end journals. Even with the longer stroke, moment of inertia remains about stock.
Rear Wheel Power Increases - The Spin Zone

This detailed $220 Scat aero crank has over .25 inch more stroke, but weighs 1.5 pounds less than a stock cast crank, partly because of the hollow big-end journals. Even with the longer stroke, moment of inertia remains about stock.  View Related Article

 

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