Recent content by UncleBrad

Thank you all for the help.

If I put a hot wire to the commutator a current connects around the whole thing. Isnt the current supposed to be limited to the segments in the commutator touching the brushes...hence the segments??

Is current supposed to transfer across the commutator segments? Wouldnt that short the negative brushes?

Its a Bosch Dynastarter from the 70's. Four Brushes on the back plate and a Big Armature used to start engines.

So its a basic motor. Everything seems insulated. I put it together up to the negative brushes and I can connect a power wire to it and the casing and armature still is grounded. It is not till I connect the Positve brushes which have insulated seats that the whole system including the casing...