I need help with my electrical system. By zombieninja (Read 853 times)

[zombieninja]

I've looked through the library. There are a lot of dead links in there or maybe I just have bad luck and only the ones I need are dead. Anyway, I have a 150cc TaoTao Lancer. My battery has been dieing, not every day, like once every week to 10 days. I hooked up the multimeter to the battery and it reads 12.5 to 12.7 or so. When I start it and rev it up I get no change. I've tried to check the R/R but I didn't know exactly what I was doing. I'm pretty sure I was getting 12.5 from the stator and like 13.5 or so out? Maybe, like I said I'm not completely sure. The test I saw on youtube the guy took the stator off and tested wire continuity the whole nine yards. I want to test everything but I dont want to take off the flywheel unless I have to. Can anybody hook me up with a step by step test I can do to narrow it down. If my stator is bad I'll have to change it but my scoot is brand new so I'm hoping it's something easier to change. (I don't have a flywheel puller). Thanks for your help guys and girls.

[Alleyoop]

Here is a nice Diagram and easy to follow instructions that RICH put together on how to test a single phase stator. If you have a 3 yellow wires then it is a different test.
Alleyoop

To test the output of the stator set your multi to AC and find a good ground for the black probe such as the engine or frame. Unhook the white wire from the regulator and put the red probe into the connector on the white wire. Start your engine and give it some RPMs. You should get something like this:

Reconnect the white and unhook the yellow. Test it in the same fashion:

The white provides the charging current and the yellow does the AC lights like the headlights. If your voltages are somewhat different don't panic, there's a lot a variation from one stator to another. However, they should be close. If your voltages are significantly less on either wire then your stator is toast.

If your stator voltages are OK then hook all the wires back up to the R/R and start the bike. Now touch your red probe to any exposed spot on the yellow wire. It doesn't matter where, the whole wire is regulated. You should get close to 12v AC. Then do the same to the white wire and you should get 12v AC again. If you don't then the R/R is bad.

Although the blue/white andred/black wires don't have anything to do with our discussion on charging, you can test them in the same manner:

[Alleyoop]

Here to make it easier, I found Videos for testing 3 phase stators, single phase stators and for regulators/rectifiers. I put the links in all three to get to which ever one you need to look.
Alleyoop

scooterdoc.proboards.com/thread/11757/test-single-phase-stator?page=1&scrollTo=105817

[zombieninja]

Thanks Alleyoop your always there to help out and I appreciate that a lot.