GoldenMotor.com Forum

if the sensors still have kohms in reading and similar values then I guess you save yourself sometime by not doing it but its always better to have new ones as they tend to easily die (but it will be mostly reading in ohms at that point.
 

The wheel will not rotate backward at all.

If you cannot rotate the wheel backwards, it sounds like the motor may be seized. With the minimotors, the freewheel mechanism (unidirectional clutch) allows you to rotate the wheel in the forwards direction freely without turning the motor, but the wheel should turn the motor when you try to rotate it backwards.
If the motor does not turn, it may be a seized bearing or a buildup of rust between the rotor magnets and the stator assembly that is jamming it solid.

As your motor is not turning, there is not much point in trying another controller until the motor has been freed off first. 

Here is a drawing showing the location of the bearings:


Click the drawing to enlarge.

Check out this post to see what's inside a minimotor.

Alan

Reviving this old thread, because I want to ask if you know how I can get ahold of the MP5 hub’s drive side shell, in order to convert the 135mm front hub motor to a rear one. This hub is much too powerful to use up front.

Both the fork and rear dropouts of my bike are 135mm spaced, and the front disc brake mount is spaced the same as the rear as well.

Is it simply a matter of replacing the drive side shell? How can I get ahold of one?

Thanks in advance

Pedal assist before throttle does not work. I will measure the throttle resistance. Thanks for the info. I am trying to borrow another controller to swap in.
I measured between the black and green on the throttle and red to green at the controller connector.
Both return 32 megs with no change with lever position.
Bad throttle?

Close up photo