Now it's my stator - it never ends

[flyingace]

I just installed a new stator, and I think the voltage is low. I get maybe 50 volts AC at 5K rpm. I thought it was supposed to be 75 or so. All three leads are the same. I get no battery charging voltage at idle and maybe a 1/2 volt over at 2K rpm. The battery doesn't run down under normal use.

Is this thing bad or weak? My old stator was only putting out 5-10 volts, so this is way better, but...

[Jethro]

I see you are in electrical hell right now as well!

[flyingace]

Just when the experts are out of town too. Figures

[Guest]

Boondocks knows his *hit about electrical. I'd ask him.

[Boondocks]

The OEM stator is specified to provide 80VAC on all three legs.

The Electrex fault finding chart requires 50VAC or more on all three legs. I would take this to mean that the Electrex stator (and maybe other aftermarket ones) have fewer windings of thicker wire and 50VAC on all three legs is the normal output. It's probably a higher output stator than the OEM in spite of the lower voltage.

Since you just installed a new aftermarket stator, I think that 50VAC on all three legs agrees with the expected output and is perfectly OK. If your charging voltage is in the normal range, you're good to go.

[flyingace]

Thanks Boondocks. I have a year replacement guarantee so If something really is wrong, it will show up.

[drenski]

Have you checked out the Stator Papers on this web site? I am suffering from the same problem. I replaced the stator and battery and did a full diagnostic check using the Stator Papers. I ever re-did as many wire connections as I could and managed to get the volts up to around 12.3 at 4000 rpm. At least the bike isn't running off the battery now. I purchased a battery maintainer from the local bike shop. This device has an adapter with a pig-tail connection that hooks right up to the battery. Once hooked to the battery you then route the other end to an inconspicuous spot on the bike where you can easily plug it in to the battery maintainer until your next ride.

[flyingace]

Have you checked out the Stator Papers on this web site? I am suffering from the same problem. I replaced the stator and battery and did a full diagnostic check using the Stator Papers. I ever re-did as many wire connections as I could and managed to get the volts up to around 12.3 at 4000 rpm. At least the bike isn't running off the battery now. I purchased a battery maintainer from the local bike shop. This device has an adapter with a pig-tail connection that hooks right up to the battery. Once hooked to the battery you then route the other end to an inconspicuous spot on the bike where you can easily plug it in to the battery maintainer until your next ride.

My stator specs out according to Electrex, so I'm OK with that. It charges the battery just fine.

12.3 V at 4K sounds kind of low to me. If everything checked out via the stator papers, I would think your charging voltage at 4K RPM would be over 13, mine certainly is.

[Boondocks]

Have you checked out the Stator Papers on this web site? I am suffering from the same problem. I replaced the stator and battery and did a full diagnostic check using the Stator Papers. I ever re-did as many wire connections as I could and managed to get the volts up to around 12.3 at 4000 rpm. At least the bike isn't running off the battery now. I purchased a battery maintainer from the local bike shop. This device has an adapter with a pig-tail connection that hooks right up to the battery. Once hooked to the battery you then route the other end to an inconspicuous spot on the bike where you can easily plug it in to the battery maintainer until your next ride.

You should read the fault finding part of the Stator Papers again. Unless your 12.3V reading was a typo and should have been 14.3V, you did not do a full diagnostic check. You are not charging your battery at 12.3V, and the bike is continuing to run off the battery.

If the stator passes the tests, your R/R may be bad. You should be reading over 14V at 5,000 RPM.

[Mike Curtis]

I also installed a Electrolux stator on my 850 and was surprised to see almost 90 volts @ 5,000 rpms and still had charging problems turns out that the new R/R was not properly grounded.

[Jethro]

I also installed a Electrolux stator on my 850 and was surprised to see almost 90 volts @ 5,000 rpms and still had charging problems turns out that the new R/R was not properly grounded.

I always wire the r/r directly to the battery, and another ground to the frame.