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Tom Wesenberg · 12-04-2015, 08:05 PM

That's one of the worst cases of a well worn commutator I've seen. Do you have a lathe to trim it level? You need a sharp bit to trim the copper without messing it up. After it's trimmed I use crocus to smooth the commutator, then use an Atlas hobby saw to undercut the insulation between the segments about .010" to .020" depth.

With new brushes and a smooth commutator that should last many years. Set the output to only an amp or two for most daytime driving. Short drives with a lot of starts will take more amps.

12-04-2015, 08:05 PM	#20
Tom Wesenberg Senior Member Join Date: May 2010 Location: Mpls, MN Posts: 27,582	Re: Powerhouse Generator identification? That's one of the worst cases of a well worn commutator I've seen. Do you have a lathe to trim it level? You need a sharp bit to trim the copper without messing it up. After it's trimmed I use crocus to smooth the commutator, then use an Atlas hobby saw to undercut the insulation between the segments about .010" to .020" depth. With new brushes and a smooth commutator that should last many years. Set the output to only an amp or two for most daytime driving. Short drives with a lot of starts will take more amps.