Charging system - low voltage

[Gorf]

So I put a new battery in my '65 and discovered that it doesn't seem to be charging. I'm only seeing about 11.5v across the battery at about 2K rpm's. So I put a new rectifier in the bike (original style selenium) since it was relatively cheap. But I still don't have good charging voltage. The only other component is just the stator right? Anyone have any idea what output voltage should be on the stator, or how to test it? Maybe I missed a good link about it during my searching...

[rzgkane]

So I put a new battery in my '65 and discovered that it doesn't seem to be charging. I'm only seeing about 11.5v across the battery at about 2K rpm's. So I put a new rectifier in the bike (original style selenium) since it was relatively cheap. But I still don't have good charging voltage. The only other component is just the stator right? Anyone have any idea what output voltage should be on the stator, or how to test it? Maybe I missed a good link about it during my searching...

Stator is easy to check. The pink, yellow and brown wires should all have continuity to each other but not to ground.

I've heard that low output is sometimes attributable to a rotor that has lost its magnetism. Only cure there is to replace the rotor.

[Gorf]

So I think I have troubleshot this down to a bad stator. Are these available as new parts through Honda still? I checked on classichondarestoration.com but didn't seen any options.

[cknight]

The Rick's Motorsport Electrics stator and regulator/rectifier kit is a good choice. Regards, Chase

[LOUD MOUSE]

Have ya tested the stator?
To test ya place your VOM on resistance.
All leads will show continuity to each lead but not to the case.
Don't test the green/red strip wire as it is the neutral switch lead. .....lm

So I think I have troubleshot this down to a bad stator. Are these available as new parts through Honda still? I checked on classichondarestoration.com but didn't seen any options.

[Jlovvorn]

How did you rule out the rectfier?

I bought two aftermaret selinium rectifiers before I realized they were both bad.

Go with the Oregon Motorcycle solid state cheap one, or Charlie's Place upgrade.

[mike in idaho]

You can plug the a/c leads into a seal beam car headlight and start the engine. The headlight should get nice and bright at fast idle if it's putting out any voltage. It will blow out the light at higher revs so keep it down arouind 2000 rpm. Not a precise measurement of alternator output but it lets you know in about two minutes if the alternator is dead.