I will get good documentation on the next one. May be a few weeks or so.
The mag may look good on the outside but it's what's inside that counts
I'll try to post a picture of what was inside (rust).
The rotor was a nice color (colour for Rudi
) red rust.
The coupling spring was in 2 pieces, the coil was open and the contacts on the points looked like the surface of Mars. The rotor retainer was in good shape though.
To clean up the body I used a fine brass
(I know brass is yellow but doesn't show up) wire brush. I wish I would have had some glass beads or some walnut shell. Would have been a lot easier. I used the brass brush because I've seen deposits of steel impregnated into aluminium which after some time had turned to rust. Just a precaution.