Had to order brushes.??in Princeton, WV, is a good place for motor brushes, and you can search by size. Got 4 brushes, shipped, for about $30, and here in three days. Would have been faster if USPS hadn't lost the package for a day. First motor is running. Looks like I need to create a wiring diagram, and make sure the replacement relay I bought for it is the right one, because the controller isn't working, thought the motor spins on the bench.?
https://www.dcmotorparts.com/
I'm also considering skimming both commutators, though the one I've already seen doesn't look all that bad. Just because I have them apart enough to do it easily. What I don't have is the special tooling to do that. Does not look like there is any mica to undercut. Have seen a ground hacksaw blade used for that purpose, so don't know if I need the specialty tooling. And no idea how many more motors I might need to work on...
Somebody stop me before I eBay again! ;P
Never found the missing parts, so I'm headed out to the shop to see If I can make a couple of matching brass brush covers. The two Themac J-3 tool post grinders I wound up with both have more complex brush covers: One on the left is the other one of what I lost. The other two will screw down into the brush holders, but are slightly different in size. I'm going to try ordering some that should be the correct one from Grainger, where they're $2.29 each, which isn't bad, and I can pick them up so not pay shipping, but the earliest they could be here now is after 4PM on Friday. $4.98, so I went ahead and ordered them. The brushes, if I got them from Grainger would be $26.76 each. DC Motor sold them to me for $5.13 each. Probably should have asked if they had the brush caps, but didn't think of it then. ;)
Got a package of 50 of the 8-32 kep-nuts from amazon for under $8 last weekend. I now have LOTS of spares! :)
Bill in OKC
Bill in OKC too