[Duncan]

Hi
With your low speed requirements a fork lift motor would be ideal - you may even be able to get away with the forklift controller and running at forklift voltages
(forklift motors in electric cars are normally run at much higher voltages)

Motor rpm will depend on voltage - at normal forklift voltage (48v) the motor will run at 1500rpm (ish)

In a car we would increase the voltage to 144v+ and the rpm to about 4000rpm

You idea sounds fine but you will probably only use bottom gear

 

[piotrsko]

11" motor, drive train out of a 4x4 or jeep for that rock crawling speed gear ratio, chevy battery pack, drive that all day on a charge.