This brush thing is very interesting to me.
As I’ve mentioned, on my 1975 XS650B which I owned back in the mid-late 70s, I had to change my alternator brushes every 5-6000 miles like clockwork (after an initial unpleasant surprise and very unhappy experience involving a cold rainy night on a back road - with a girlfriend - the night before a thermo exam). I used to check them about monthly and I was riding A LOT.
Over the past 20 months I have put about 4000 miles on my 1976 XS650C with no visible wear on the brushes which weren’t new when I started. I now wonder if I had a rotor with a rough surface finish on the slip rings. I was buying OEM brushes from a Yamaha dealer - several sets per season.
Hmmmmm.
Pete
As I’ve mentioned, on my 1975 XS650B which I owned back in the mid-late 70s, I had to change my alternator brushes every 5-6000 miles like clockwork (after an initial unpleasant surprise and very unhappy experience involving a cold rainy night on a back road - with a girlfriend - the night before a thermo exam). I used to check them about monthly and I was riding A LOT.
Over the past 20 months I have put about 4000 miles on my 1976 XS650C with no visible wear on the brushes which weren’t new when I started. I now wonder if I had a rotor with a rough surface finish on the slip rings. I was buying OEM brushes from a Yamaha dealer - several sets per season.
Hmmmmm.
Pete