Looking for replacement brushes
I'm looking to replace the ~four~ brushes in my ~1000 watt scoot hubmotor.
The brushes are 15CM long by 10 CM wide, and have a "tombstone" section, 5 CM thick one side and 5.5cm thick the other.
Anyone got a source? I don't mind filing down bigger brushes.
They've only lasted ~4K, but if I can get replacements, I don't mind. I know I've been loading it pretty heavily.
it sounds like the brushes were not seated to the comm properly. small contact patch caused hi heat and melting of the holders.
refacing of the comm is done easily in the motor can by using an electric drill and hi-count fine emery paper.
i have heard of people using water on the comm to seat the brushes quickly.
sounds strange.. but they immerse the motor (comm anyways) in water and run it at a very low power level unloaded for 30-60 secs.
the water cuts the brushes quickly to seat them to the comm.
this is an old r/c car racing motor trick.
now the problem i see is sealed bearings don't like water immersion. you might not want to use this method if your not able to repack the bearings.
on the good side... the motor gets a good cleaning..