Hi Ray and
to the forum.
I don't think that the GM vector controllers will work with properly with non-GM motors as the resistance and sequence of the motor windings are very important to allow the controller to operate correctly.
I was told by GM that their vector controllers are only compatible with their motors and "cannot" be used with other manufacturer's motors.
I suspect that if you want increased torque you may also need to upgrade your batteries to cope with the extra current demand.
As you are aiming to
more than double your speed, you will require more than ten times the amount of power to achieve this goal, therefore your existing batteries would also need to work at least ten times harder at 70km/h than they used to at 32km/h.
The power required is proportional to the cube of the velocity. Therefore
(if my calculations are correct) to increase your speed from 32 to 70km/h, you would need 10.47 times as much power:
(70/32)3 = ~10.47For example,
if it only used 720W of power to maintain 32km/h on the level it would theoretically need 7538.4W of power to maintain 70km/h.
720W @ 48V only requires 15 Amps, but the voltage sag caused by the increased load on the battery at 70km/h could easily result in the battery having to supply
over 180 Amps in order to produce the required power.
I suggest that you spend some time giving this matter some serious thought and do your own research
before you start buying expensive replacement components, or you may be disappointed if you quickly purchase items that are not capable of fulfilling your requirements.
Alan
