Electric Bike Motor

If it's a permanent magnet DC generator, it will almost certainly work as a motor.

A 24v or 36v motor will run off 12 v but it will take less current than at it's rated voltage and have much less oomph (technical term).

You could have 2 batteries and have them switchable between series or parallel for max speed or range?

Del

ok

thanks

That it might "work" is one thing, but for how long?

I cannot ever recommend using a generator as a motor or a motor as a generator, especially if it has brushes as the field will always slew with load and the brushes may well be in the wrong position and you will get really bad sparking and erosion of the brushes and commutator.......

Use a car wiper motor and gear it down as required. Use a simple PWM circuit for good speed control, I made one recently for about $2 with a 555, a MOSFET and a handfull of other components, it works great!! If you want the circuit diagram, I can send it to you, I found it on the web a long time ago......or search on the web using as a search word "555 PWM".

Will the motor be strong enough?

the motor will have a sprocket mounted on the pole, which will have a chain to the third gear on the front, and then the normal chain will go between the first and second gears.

Also, thanks for the advice, and if you could send it to me that would be great

Thanks