I recently hooked up a new Crystalyte HS4040. Initally, it ran, albeit poorly (I later discovered an intermittent connection on one of the Hall wires). But after riding it for a few blocks, the motor gave up the ghost, and now will only do a half-hearted jerk on startup.
I took a multimeter to it, hoping to discover it was just a bad connection, but instead discovered that all three phase wires are now shorted together. It has to either be happening inside the motor, or in the first few inches outside, and since I can't see any problems with the wires, so my money is on the former.
My question is... is this a common failure? was it potentially the result of running with a bad hall sensor connection, thereby frying the motor? (I find this hard to believe since my controller detects stalls and limits amps, but it's the only thing that comes to mind.)
Oh, and one other odd thing. You know those cheap chinese brushless motor/ebike testers? I hooked the phase wires up to that ("motor coil test") and the LEDs blinked in series just like they should.... how does that make any sense??
thanks,
s.
I took a multimeter to it, hoping to discover it was just a bad connection, but instead discovered that all three phase wires are now shorted together. It has to either be happening inside the motor, or in the first few inches outside, and since I can't see any problems with the wires, so my money is on the former.
My question is... is this a common failure? was it potentially the result of running with a bad hall sensor connection, thereby frying the motor? (I find this hard to believe since my controller detects stalls and limits amps, but it's the only thing that comes to mind.)
Oh, and one other odd thing. You know those cheap chinese brushless motor/ebike testers? I hooked the phase wires up to that ("motor coil test") and the LEDs blinked in series just like they should.... how does that make any sense??
thanks,
s.