A crescent gear and pinion from a car window drive for this application.
JR
Dweller in the cellar


wrote:


The old maytags used a sector gear on the pedal to drive a pinion on
the crank. At a guess, something like 3 or 4 inches of throw to get
maybe 2 turns of the motor. Maybe you could chop up an automotive
ring gear and weld a section onto an appropriate pedal and add an
adapter to the motor to take the drive gear from the matching
starter. Your pick on how you want to do the ratchet. Alternatively,
maybe a socket adapter and a cordless drill...?
--Glenn Lyford

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