Starters and generators and armature lathes

mkirsch

Well-known Member
The commutator on my Super M's starter looks like the surface of the moon. Brushes are shot and the starter doesn't work worth a hoot.

I remember as a kid going over to my grandfather's place one evening with Dad, and watching Dad clean up an armature on a little hand-cranked lathe.

Right now we're both kicking ourselves for letting that lathe go at the estate auction in 1989, but at the time, who knew we'd need it 23 years later?

There are a couple of these lathes on ebay right now, but they only include one collett. I don't want to spend $50 or $125 on a shelf decoration.

Are the shafts on the commutator ends of starters and generators pretty much all the same size?
 
Yes, they are the same. My dad did this all the time on his lathe. He
would score the mica on the generators, but not starters. I am in Eastern Iowa if you need one done.
 
no,theyre all different.
if you have a decent drill press you can chuck up the commutator end and use a smooth mill file to clean it up...make sure you undercut mica AFTERWARDS.
 
While on generator brushes that use soft copper brushes undercutting the commutators insulation segments is standard and necessary practice, on a starter that uses copper brushes its not any such issue. As long as the machining is concentric and you thoroughlly clean and remove all the metallic dust she ought be good to go with a new set of brushes and good bushings/bearings

John T
 
Thanks. I will save my money. Those lathes are definitely not complete then, and it's a crap shoot if they have the correct collett.

I'd be better off rolling the dice on a used starter.
 
(quoted from post at 08:05:29 05/02/12) Thanks. I will save my money. Those lathes are definitely not complete then, and it's a crap shoot if they have the correct collett.

I'd be better off rolling the dice on a used starter.

Only way I would buy a used starter on ebay is if it was tested and guaranteed to work, or if it was extremely cheap. Even if it was cheap, the shipping cost would be a tough pill to swallow if the starter turned out to be junk.
 
Take it to a shop and have them turn it.Why is it that many of you wont look for help on a problem?
 
(quoted from post at 03:50:44 05/03/12) Take it to a shop and have them turn it.Why is it that many of you wont look for help on a problem?

For quite a few of us, that local shop is over 100 miles away.
 
Then ship the armature to a shop.Ive turned armatures since 1966 here.Not a great amount but Ive had a metal lathe and a Snap On armature tool for many years.I have brushes and bushings for starters in the shop even though Im retired,
 

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