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