Given a source of 12 VDC and one of 110 VAC at 60 or 400 Hz, how might synchro operation be established between the driven wheel of a bicycle or tricycle and the free (nondriven) wheel(s) for all-wheel drive?
IIRC a synchro is a rotary VDT (variable displacement transducer) or type of transformer. They were used in airplanes (long ago?) to connect the steering yoke to flight control surfaces (ailerons, elevator, and rudder)
The reason I ask is I have a Kinetic Energy Recovery Bicycle group on LinkedIn. Any of you here would be welcome there. Our goal is to save lives and smooth bicycle/automotive traffic interaction with regenerative braking of bicycles/tricycles as they approach a stop, including "winding up some joules" while stopped (applicable to trikes) by backpedaling. With energy on board, extending the development to all-wheel drive seems a natural next step--for a different purpose and market, though.
We've discussed magnets in the rim and an arc of electromagnets along an arc near the rim, as one method of drive, and then I though, that looks like it could be a synchro. Without a synchro, we'd have to measure the torque at the pedal driven wheel, and control power input to the electric wheel(s)...way too much trouble, like building an ABS from the ground up. We can assume our trike has 3 same-size wheels.
There's no reason to reinvent...the wheel. (giggle)
Douglas (Dana) Goncz Replikon Research Seven Corners, VA 22044-0394