The Motor

I purchased this motor off of ebay for $56 +shipping

rebuild notes

Turn comm on lathe to clean it up. (like .001)
Comm cleanup tricks to try: Lathe mounted Dremel tool to undercut slots
Revisit slots with an exacto knife
Final sand the comm with 180-220 wet sand paper.

Notes from Jim's emails

I recommend not skimping on quality and to buy good ones. I like SKF's myself as I get them at a good price and they're proven. They should be a 6205-2RS (2RS means double rubber sealed) on the CE and depending on the motor style a 6007-2RS or a 6207-2RS on the drive, anyway it'll be a number like that, just bring in the bearing and anyone could match them up. I recommend rubber sealed bearings. To drive them on, find a small pipe that matches the inner race and drive them on with a hammer using a solid but not to hard swing against the pipe. I also tell people to use locktite on the shafts for added grab.