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Post by jharri7140 on Oct 9, 2023 12:31:11 GMT -5
Hello everyone, my scooter refuses to charge the battery and I have no idea why. I have replaced the coil, regulator/rectifier, and directly wired straight from the coil to the RR to the battery. All ground connections are good, all continuities are correct, and all connections between coil, RR, and battery are good. Yet I still only see 11V AC going into the RR from my yellow wire, and around 9-10V AC going into the RR from the white wire when the RR is plugged up. When the RR is not plugged up, I have plenty of AC voltage from the coil, measuring around 40 or so volts. I have followed a full system check video with a multimeter, everything checks out starting from the coil and working to the battery until I check the RR AC input. It was doing the same thing before I replaced the coil and RR, but nothing changed when I installed the new ones. Link to new coil put in: a.co/d/87YMn27Link to new RR put in: a.co/d/dP1s0Qu |
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Post by GrumpyUnk on Oct 10, 2023 15:18:54 GMT -5
So....you haf volts going into the RR, but no volts coming out. Very interesting.... I suspect you have a RR that is not working properly. I think does have to be grounded well to work properly.
What prompted replacing all this stuff? Could it be that your RR is the original cause, and you got one that does not work? I think the RR has two inputs and two outputs, but have not looked for sure. One is regulated and rectified DC to operate the bulbs and cluster. The other is somewhat rectified but unregulated to run the headlight. On most. From the schematics I have seen.
Have you checked headlight output? I think it takes either Y or W lead from the stator and rectifies to pulsed DC. The other feed is rectified and regulated to keep the bulbs and cluster(gas/tach) from getting fried when you go fast... Others should correct as needed...
So check your reg/rec. They are not expensive, but could be factory defective.
My guess for the day.
tom
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Post by jharri7140 on Oct 13, 2023 16:19:36 GMT -5
The reason for replacing the coil and RR was due the battery never charging. When I bought this moped it was not running, so after getting it running with some carb work, I realized pretty quick that the battery was not charging. So, I replaced the coil since it was easy and I was hopeful it would fix it, then when that didn't work, I replaced the RR. Then when that did not work I directly wired everything and still no luck. The ground for the RR (Green wire) is directly run to the battery. Both charge coils are directly wired to the RR coil inputs (yellow and white wires), and the RR red wire is directly ran to the battery. No connection issues at all or excess wire resistance.
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sinfull
Scoot Enthusiast
Posts: 355
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Post by sinfull on Oct 14, 2023 2:35:51 GMT -5
Then it is stator related
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Post by GrumpyUnk on Oct 14, 2023 12:12:59 GMT -5
Do you have voltage on the Y and W from the stator? Not connected, there should be V on both with the engine running. It would be AC or maybe bumpy DC. Magnet past a field, voltage build as it passes, drop as it leave3s I think. Number of pulses per revolution based on number of magnets inside the flywheel.
If you get no V, check that the magnets are still magnetic. Bump thump and whack the flywheel enough and the permanent magnets my lose magnetism. Likely not totally, but possibly enough to lower the output.
tom
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