Open frame (ventilated) 6 pole, yeah they made them big back then.
Interestingly, that sheet metal mesh outside around the end vents, is spotwelded to the cast iron endpiece. I didn't know that was possible.
Gunna spigot the 2 socket parts THz ?
That'd keep alignment good and it looks better too.....like you know what you're doing.
If I knew what I was doing, I'd probably know what you meant by 'spigot'.
Do you mean cut a lip in the faces on a lathe, to center the extension tube accurately? And chamfer the weld seams? I will be doing that. Just haven't found/bought a suitable bit of tube yet, so don't know dimensions.
Alignment will be by clamping the parts in a bit of L section.
In the motor, the windings/pole piece seems to be fixed in the frame solely by heat-expanding the frame onto it. I think I need to separate them for a few reasons, so heating the frame up (without wrecking the old windings) will be a bit nail-biting.
Edit to add: The plate says the motor is Y-wound, and there is no Neutral. Any one know if this is a problem for variable frequency drives?
Btw, did anyone else catch that company name on the brass plaque?
"Lancashire Dynamo & Crypto Ltd England"