Here’s the low down
Cromotor, all good for past 2 years until now. added ferrofluid And hubsink, took for test ride, ok for 15 minutes doing hard start stops up to 120 amp to help heat motor and check temps. All good and then the sound came along. It happens with any sudden amp increase but not so if very gently upping amps, there is also loss of power when the noise happens as if a clutch is slipping. It also makes the noise when using regen braking. I think adding the ferrofluid is just a coincidence and not the cause. I had to take one side panel off the motor to add the ff, but it was the side that does not have the phase wires, just the spare set of halls.
Is it a phase wire issue? Or something else?
Two 30 second videos (ignore the footage)
first with sine wave....
https://youtu.be/f0UwjVRRer0
Then with sensorless activated on the adaptto....
https://youtu.be/Gzv24CltOcs
I will have to crack open the phase wire side of the motor to check.
Any help pointing me in right direction, or any experience with same symptoms is much appreciated in replies.
Thanks
Andrew
Cromotor, all good for past 2 years until now. added ferrofluid And hubsink, took for test ride, ok for 15 minutes doing hard start stops up to 120 amp to help heat motor and check temps. All good and then the sound came along. It happens with any sudden amp increase but not so if very gently upping amps, there is also loss of power when the noise happens as if a clutch is slipping. It also makes the noise when using regen braking. I think adding the ferrofluid is just a coincidence and not the cause. I had to take one side panel off the motor to add the ff, but it was the side that does not have the phase wires, just the spare set of halls.
Is it a phase wire issue? Or something else?
Two 30 second videos (ignore the footage)
first with sine wave....
https://youtu.be/f0UwjVRRer0
Then with sensorless activated on the adaptto....
https://youtu.be/Gzv24CltOcs
I will have to crack open the phase wire side of the motor to check.
Any help pointing me in right direction, or any experience with same symptoms is much appreciated in replies.
Thanks
Andrew