Hi,

last year I raced a club championship with 10.5T motors, I ran a TrackStar motor and a HobbyWing ESC. All performed well. This year I switched clubs and I needed a 17.5T motor, so I bought a motor of a fellow club member, a SpeedPassion V3.0 motor. Today I fitted it and tried to race it, but it wouldn't budge. There is a humming / beeping noise when I press the throttle, but no movement. When I disconnect the sensor cable, it runs as smooth as an unsensored motor is supposed to.

But here is the stange thing; when I connect my TrackStar again, that runs well. So the ESC and the sensor wires are OK. But when I put the SpeedPassion on a test bench (to determine timing), that motor is given a clean bill of health as well! We tried with different sensor cables, but to no avail. I tried to run the SpeedPassion in reverse, maybe the sensors didn't agree with the direction of rotation, but that doesn't change anything.

A free banana for the person that solves this riddle...

Cheers,

Hugo

ABC wires are wrong.

Ah, right. What do you mean? You mean I connected the motor wires in reverse? I did swap two of the three so see if it would run in reverse. It didn't. Please explain.

Thanks,

Hugo

Good idea, sorry I forgot to mention we exchanged the sensor wires. It didn't solve the problem and the problem was constant / repeatable.

Thanks,

Hugo

With sensor cable plugged in you can't just reverse any two wires like you would/could in unsensored anyway, it has to be A-A, B-B, C-C.

That aside I don't really know what could be causing it since the senor cable and the sensor board itself seem to be working otherwise. Sometimes there are rare cases where a motor and ESC can be incompatible in sensored mode, maybe you stumbled into such an occurence.

I would put the motor on an analyzer if someone at your club has one to help you test it... could be a bad sensor board on the motor.

Put your speed control on hybrid mode, not full sensor mode................