After doing some riding, I find my battery is still slowly losing power.  

After checking several sources on the net and contacting ricks electrical about the stator issue, I find that there should be no connection measureable to ground.  It should be infinity to ground from any of the 3 phases.  Around 2ohms is normal phase to phase.

Apparantly as the engine gets hotter, I am losing more and more power to ground. The charging amps coming out of the r/r are going down when the engine is good and warm.  

Looks like it's time for a replacement stator.  I'll probably order new since most of the stuff I see on the bay looks pretty well cooked and black already.

Anybody ever tried rewinding one of these stators?

A PM on solving a stator issue?
Me? Rewinding the VCR was a hassle, but I've known guys who wound slot car motors.

CAN you wind one? Why not?
But, what is it gonna cost if you fail?
What does it cost to buy and slap in?
Im pretty big on fixing stuff, but knowing when the learning curve and potential savings aren't worth it...
Sometimes it is best to bite the bullet.

Or, YOU might be Just the right guy to fix it...

I was thinking more along the lines of a professional rewinder like and electric motor or alternator shop.  I may check a few and get an estimate.  But, as you said, that's something for after installing a replacement and getting back to riding.

Given that the first one lasted 28 years, I don't know if I'll even bother with getting it rewound.  Odds are I won't be around long enough to need another replacement if the replacement lives that long.

Hope you get on the road again soon.  If I didn't have the little ninja, I'd be going crazy till I get mine fixed.

All the voltages checked out on mine.  Resistances all check right except, they all connect to chassis ground and shouldn't do that.   Apparently when mine gets hot, it starts sending more power to ground.  I found that when it's hot, My voltages are lower than when it's cold.

My bettery got where it wasn't charging last fall. Voltages measured right and everything so I replaced the regulator.  It seemed to work for a while but when it started acting up this time I was experiencing slow charging until it finally lets the battery get low enough to not start it.

I'll be glad when I get mine fixed too. I hate to see it sitting there and can't ride it.  I do charge the battery once a week and ride it for a couple miles to make sure the carb doesn't gunk up and to keep some oil moved around in the engine.

I'm holding off fixing for a while due to other expenses. I'm hoping to run up and say hi to everyone on the early dragon run this year. I'm only about 2.5 hours away.  Might just have to ride the ninja if I don't have it fixed by then.