Sparking Brushes

[Oliver]

The commutator starts to spark quite a bit at high speed. I think this is happening because the motor is running with no load so it's spinning much faster than it should. After running the motor for quite a while it did get quite warm. This motor is out of a washing machine so wouldn't really run at high speed like this for long periods of time.

https://www.youtube.com/watch?v=m6sBKjDLVy4