Adverse Effects wrote: its a 40 to 1 drive
so to get 1Hp at the wheel you only need about 1/39th(allowing a bit for friction) of a hp at the motor . ok maby a bit more
two important things to remember about gear reduction:
power out is *always* less than power in
only torque and rpm change (by roughly the same ratio).
so 1hp at the wheel takes more than 1hp at the motor.
on a 40:1 ratio, 40Nm at the wheel takes ~1Nm at the motor.
100A should be sufficient, but as with most things you won't know for certain until its all together.