stator drops volts with revs

[J_C]

Hi folks. I was reading the stator papers and it says this might be a bad stator. Before buying a new one I just wanted to run this by you guys. At idle it returns 13.7 v. The moment I'm on the Throttle it drops Down, eventually to 13.0


Also, Can a stator be changed without draining the oil?

Thank you.

[83'GK]

Have you disconnected the wires and actually checked it first using the instrucctions of the stator papers? Check that first. If it checks ok, do yourself a favor and cut off the plug that connects it to the voltage regulator and solder the wires together, as those plugs cause alot of voltage problems.

Yes,it can be replaced without draining, just have the bike on its sidestand. It will drip a little bit of oil when you pull the cover off, but not much.

[scotty]

Sidestand???????????:shock:

[J_C]

Thank you Tom. I have not done that recently. I did do it about 8 months ago and I remember that something wasn't right about my results, but I really should go back and do it again before plunking down $100 for a new one of these things.

Thank you for the advice. I'll solder those guys together if I can determine that the stator is not at fault. Cheers

[Guest]

I would fully charge your battery and check all three legs of your stator and post results. Disconnect the three stator wires and get the reading directly from the stator itself.

[cberkeley]

Not trying to confuse the issue here, (the above are valid test procedures) but bear in mind too that with an unloaded stator (all three wires disconnected) it is possible for the stator voltages to appear normal while the stator was actually toast, as was the case with mine. The stator pictured below is toast, but tests good under no-load conditions. under load it delivers no more than 11.5 volts
I'm saving it for a rewind job one Sunday when it's raining and I can't ride. :-D

[Guest]

That thing tested normal? Wow, it's fried big time.

[argonsagas]

Scotty's point/query is a good one.

The repair can be done with the bike on the sidestand but it will leak a bit more than when on the centrestand. I have done it both ways, and the centrestand position is easier to work with. :-D

[scotty]

Scotty's point/query is a good one.

The repair can be done with the bike on the sidestand but it will leak a bit more than when on the centrestand. I have done it both ways, and the centrestand position is easier to work with. :-D

Hooray. Thanks ron:-D

[83'GK]

Sidestand???????????:shock:

Oops, I meant center. I was thinking about the sidestand when I was writing it. Sorry.