I have a Grubee (Skyhawk) 48V 500 Watt front hub motor kit. It stopped working after a couple of weeks and minimal usage. I couldn’t find any distributors so I purchased a modified controller. This controller is not a ‘direct fit’ but I think I have it connected properly.
If I give it throttle and lift the front wheel it will spin but not smoothly - there is some humming and intermittent loss of power. The motor doesn't have enough power to move the bike even without a rider.
Is it possible to wire the motor directly to the batteries? Is this a good test to determine if the motor is not damaged? If so what wires from the hub motor do I connect directly to the batteries?
Any other suggestions to systematically test and eliminate the throttle, controller and motor?