Krusty, Well I found out why the stator failed the open circuit test My bike does not have magnets on the rotor. The black wire and the whit wire are a positive and negative lead that provides 12 volts to believe excite the field or stator providing the magnetism whic normally comes from the magnets and without power to those two wire there will be no ac output. Nonetheless the stator is bad because th the resistance on the those two leads is 1 ohm when the specs say tha it should be 4-6 ohms. I found I shop that had one for $65 and i should be here wednesday. Jef
Aren't there any brushes that go to slip rings on the rotor? Do the black wire and white wire go to pins in the same connector that has the three yellow wires in it? If the alternator is actually an excited field alternator, the power to excite the the rotor would have to come from the voltage regulator. So if all those wires are in the same connector, and you have the connector disconnected to do the open circuit test and it would have to fail the test.
Jeff, Here is a thought. If what you way is true, that the alternator is a field exciteable one, then why don't you excite the field manually and start it and see what happens to your AC voltage at the output of the stator? To be honest I am a little surprised you didn't see any brushes when you took it apart. Is it possible the brushes are so badly worn you can't see them unless you know what you are looking for? pierce
No, I can't killfile anybody using google groups. I just didn't happen to read your message, but the idea about a stationary field coil and transmitting magnetism through the rotating poles makes sense, explaining how a brushless excited field alternator works. Yes, I agree with your proposed test procedure.
You are right. There aren't and I realized that after I posted. Trying to carry on two conversation and post to usenet just doesn't work well. pierce
