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I think the key phrase is "intermittent rotary motion." The movement of the red wheel in the gif on Wikipedia is very unlike my legs powering a bicycle or a cars piston pumping up and down.

I would like to transfer the movement from the red wheel into the smooth continuous rotary movement of the green wheel.




A bicycle can work like an intermittent drive, though. The coast capability of the cassette, combined with your mass as a form of kinetic energy storage, means that you can alternate between pedaling and not pedaling while continuing to move.




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