What could be wrong with my bike?

[patrickza]

in your second pic 2 phasewires are touching the stator, so i would start there.

I did check if they were properly insulated, and added some extra tape just in case.

 

[patrickza]

So I ran another test this morning. Lifted the rear wheel and ran the motor very slowly. No problem it seemed to turn fine. Then I disconnected the red phase. No turning wheel until I spun it by hand. The same with the blue and green phase. Reconnected all again and the wheel would turn again from a dead stop so it's definitely getting signal from all phases. Tested it when I was on the bike and it's still jerky on take-off.

Could this mean fets in the controller are blown? I did a long ride and I'm still seeing +- 10% less than full power with wide open throttle.

I'm trying to figure out what to do next. Either get the hub to a motor specialist and have the halls and phase wires replaced, or try have the controller repaired/replaced.

Edit, forgot I tested it with a lyen 9 fet controller and the start up was still rough. So all issues point to the motor...

 

[GP-tech]

Here are all information in the forum to be Electric-drivetrain-magician!

Measurements is what you need(others to help). First measure resistance of each motor phasewires to the others...same on unpluged controller, but phasewires to negative and positive(just to double check). Also check throttle signal line for voltage(controller powered), pinout signal line and measure the voltage from 0 and full throttle.