Well that look massively inefficient. What about the 'upstroke' you get on a conventional round chainset?
What about the 'upstroke'
Nobody actually pulls on the up stroke beyond about 40rpm, but treadle cycles are perfectly capable of turning upward pedal force into crank torque.
@gbj_tester started
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Well that look massively inefficient. What about the 'upstroke' you get on a conventional round chainset?