^ I'm looking to re-wind this bad boy at some point in the future. No ground faults or shorts and it still runs despite being used as a lawn ornament for probably 40-50 years, but it clearly needs some fresh field windings nonetheless.

My plan is to document the hell out of the existing winding pattern, rip the old stuff out, sand blast everything, bondo & paint, then re-wind. I need new slot liners and fiber wedges to do that since the old ones are very crusty.

Anyone know where I can buy these materials? Also tips and tricks for winding one of these old hand-wound motors?

Brownie points if anyone can tell me where I can find double cotton-covered magnet wire without sacrificing an arm and a leg. Period correct and much more durable than bare enamel for applications like this where vibration and nicks from hand-winding are much more of a concern than the very mild temperature rise.

 

More photos for anyone who is interested.

 

I would ask her. It seems like a lot of work.

 

Google Prespahn and fiber sheet, You should be able to get it in N.A.
You could also use enamel wire if you were to dip the stator in enamel.

 

In my youth during training, during the spell in the motor winding dept, we had an emergency repair of a crucial large DC generator where they had used cotton coated wire.
The solution was to string the old wire across the flat roof of the shop and us junior staff had to wrap the whole length of wire by hand in order to get it back in operation by the following day.
.

 

In my youth during training, during the spell in the motor winding dept, we had an emergency repair of a crucial large DC generator where they had used cotton coated wire.
The solution was to string the old wire across the flat roof of the shop and us junior staff had to wrap the whole length of wire by hand in order to get it back in operation by the following day.
.

You know, with the state of 3D printing these days, I bet a guy could rig up a spiffy little taping machine and a reel-to-reel arrangement passing through it without too much difficulty.

Hahaha.

Realistically though I might just upsize some ordinary enameled wire to match the OD of the original cotton-cladding and then wrap the exposed coil ends with some black cambric tape if I can't find the real McCoy commercially. Pretty sure the original cladding was braided rather than spiral-wound anyhow.

 

Doggie on chair!

 

They called them 'Century' motors for a reason.

 

We used DuPont Nomex in the slots. We also used Kapton Tape on end turns windings. Anyway I think Nomex is what you want. It comes in a few versions.

DuPont Nomex

Ron