29-05-2020, 12:43 PM
Think I'm about to give up on this.
I've now thoroughly cleaned up the commutator and fitted the new brushes but there's been no improvement in the motor at all.
Runs smoothly enough but with no real power so I suppose it must be an electrical fault but I've not been able to find much in the way of an "idiot's guide" to checking this out.
I assume there should be continuity through the field windings and they shouldn't be down to earth. I haven't tried to check this but if it were the problem then would the motor work at all?
I seem to recall that each segment of the commutator should be connected to just one other so I guess I could check this although again I'm not sure exactly what I'd learn from it.
Do the new brushes need to "bed in" or am I clutching at straws?
Just getting really annoying that I don't feel I really understand what issues I'm looking for.
John.
I've now thoroughly cleaned up the commutator and fitted the new brushes but there's been no improvement in the motor at all.
Runs smoothly enough but with no real power so I suppose it must be an electrical fault but I've not been able to find much in the way of an "idiot's guide" to checking this out.
I assume there should be continuity through the field windings and they shouldn't be down to earth. I haven't tried to check this but if it were the problem then would the motor work at all?
I seem to recall that each segment of the commutator should be connected to just one other so I guess I could check this although again I'm not sure exactly what I'd learn from it.
Do the new brushes need to "bed in" or am I clutching at straws?
Just getting really annoying that I don't feel I really understand what issues I'm looking for.
John.