It's a strange fact Olly that for many years carbon dust was used as a lubricant, but in DC motors it can be a PITA!
It will soak up moisture and that alone can cause otherwise perfectly good brush gear to 'stick' and also cause 'tracking' of the supply voltage.
Glad it worked out for you.
Roy.
It will soak up moisture and that alone can cause otherwise perfectly good brush gear to 'stick' and also cause 'tracking' of the supply voltage.
Glad it worked out for you.
Roy.
