20-03-2023, 10:15 AM
Thank you for the responses to my overly long tome. My rotor winding had a break just as it exits the wound coil taking a loop round the nylon guide, fortunately it was the top turn rather than the first and I could unravel enough to remake the tail. It wasn't obvious why it had failed, it didn't look overheated or mechanical damage and I can only imagine the wire had a kink that had been pulled tight, hardening the copper. Surprising on such low mileage (the brushes still had machining marks) as presumably it was made in a production facility that will be turning out thousands of similar windings. I am wary of expecting it to recharge a flat battery, that seems a recipe for a disaster. Replenishing what the starter has taken out (not much with 12v starting!) and balancing the running load will be sufficient for me!
Anticipating a rotor rewind I consulted that font of all knowledge; YouTube. If you want to see some clever guys in South America and the Far East (?) rewinding rotors with very rudimentary facilities; look it up. We are very fortunate in the western world to have an endless supply chain with multi-choices for normal car spares, seemingly unlike some areas. Their ingenuity and making do approach is inspiring for those of us who prefer to be hands on where we can.
Anyone else had a Dynamator non-gear problem?
Dave