I have an issue with my motor. At a certain RPM (I’d say at about 70% throttle), it starts screeching loudly. Before and after this speed it runs fine. Video of it happening:
Does anyone have any idea what’s causing this? I’ve opened up the motor and nothing seems broken and magnets are where they’re supposed to be. I’ve also taken out the bearings, checked them, greased them and placed them back but no fix. I’ve run this motor countless times without this happening but now it happens all the time. I must add that I had a similar noise when throttle was at maximum and batteries at about 70% or higher. I’d always avoid top speed and ride slightly under it to avoid this noise, but now it only happens at the slightly lower RPM.