ironmonkey
10 mW
- Joined
- Apr 5, 2012
- Messages
- 32
Left my 72V brushless motor bike sitting for 1.5 years rusting away in the carport. Its been ultra reliable in the time ive used it. Battery full. Greentime controller. When I first tried it it doesnt work of course, rust everywhere. So I checked and redid all the wiring, but forgot my initial phase combination.
Tried all 6 phase combinations. Theres one where it spins backward at a slow speed, and one forward at the right speed. The latter is presumably the right one. The controller has no self learning ability.
However, the motor just squeals when you start applying moderate loads to it (pressing the brake or putting the front wheel to a brick wall). In the good old days it will easily spin the back wheel under its own weight if it cant move forward (im not sitting on the bike of course).
Whats the problem?
Bad hall sensor, or bad controller? I'm using a 72V A123 battery pack and its BMS doesnt look like a cheap one.
thanks to whoever can help.
Tried all 6 phase combinations. Theres one where it spins backward at a slow speed, and one forward at the right speed. The latter is presumably the right one. The controller has no self learning ability.
However, the motor just squeals when you start applying moderate loads to it (pressing the brake or putting the front wheel to a brick wall). In the good old days it will easily spin the back wheel under its own weight if it cant move forward (im not sitting on the bike of course).
Whats the problem?
Bad hall sensor, or bad controller? I'm using a 72V A123 battery pack and its BMS doesnt look like a cheap one.
thanks to whoever can help.