Hey, Jim. Found this during some mindless surfing. Some trivia for your files.
From here: https://www.240turbo.com/AdjustableVoltage.html
I used to "flash the field" on ol' Harley 6 volt generators, after a rebuild/rewind. Quite necessary on those.
First I've heard of this being done on alternator rotor/armatures. Our XSs can have the brush polarity either way, depending on which system, and a used type "A" rotor refitted to a type "B" alternator would certainly experience current reversal.
We probably don't have this issue since our alternators aren't self-energizing, and get full current immediately when the bike is switched "on"...
From here: https://www.240turbo.com/AdjustableVoltage.html
I used to "flash the field" on ol' Harley 6 volt generators, after a rebuild/rewind. Quite necessary on those.
First I've heard of this being done on alternator rotor/armatures. Our XSs can have the brush polarity either way, depending on which system, and a used type "A" rotor refitted to a type "B" alternator would certainly experience current reversal.
We probably don't have this issue since our alternators aren't self-energizing, and get full current immediately when the bike is switched "on"...