Monster Rat
XS650 Member
I don't think I have ever joined a forum where everyone is so friendly, especially given the amount of repeated questions. The number of threads started on charging problems is staggering. Welp, I am joining that list.
I have an issue that as I ride the bike it discharges the battery to the point that the headlight consumes enough juice that it will eventually kill the engine. If I turn off the headlight and kick start, and keep the rpm's up enough I can limp it home. Here are some details -
1974 with stock charging and ignition components still intact. Rotor ohms were 5.3 The stator ohms are confusing me. I checked it off the bike and resistance readings are different than when on the bike. OFF - .9-1.0 between white wires and open between the other wires. ON - .5 between white wires and I have a reading on the black wire of 20.0 ohms, that should be open correct? The brushes are in good shape, probably 3/8" longer than the wear mark. When the key is on I show 12.2v at the green wire 6pin alt connector when it is separated from the alt. When connected the green wire at the brush, and the 6 pin connector (both sides) is right at 4.5v Should it drop that much across the rotor? Sounds like the stator is shorted. Am I correct in this thought?
I have an issue that as I ride the bike it discharges the battery to the point that the headlight consumes enough juice that it will eventually kill the engine. If I turn off the headlight and kick start, and keep the rpm's up enough I can limp it home. Here are some details -
1974 with stock charging and ignition components still intact. Rotor ohms were 5.3 The stator ohms are confusing me. I checked it off the bike and resistance readings are different than when on the bike. OFF - .9-1.0 between white wires and open between the other wires. ON - .5 between white wires and I have a reading on the black wire of 20.0 ohms, that should be open correct? The brushes are in good shape, probably 3/8" longer than the wear mark. When the key is on I show 12.2v at the green wire 6pin alt connector when it is separated from the alt. When connected the green wire at the brush, and the 6 pin connector (both sides) is right at 4.5v Should it drop that much across the rotor? Sounds like the stator is shorted. Am I correct in this thought?