Author Topic: 1993 Ducati Superlight Charging Issue  (Read 612 times)

Offline kitjv

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1993 Ducati Superlight Charging Issue
« on: April 30, 2019, 02:54:50 PM »
The charging indicator light on my Superlight illuminated the other day. When I chcked the incoming voltage at the battery, it was considerably high (i.e. 15.5VDC @ 3,000 rpms & 16.0VDC @ 4,000 rpms). In addition, the electrical connector at the headlight was partially melted. This indicated to me (and I admit that diagnosing electrical issue is not my strong suit) that the regulator/rectifier was faulty. Thus, I ordered a new aftermarket unit.

Feeling that it would be a good idea to check the alternator as well, I unplugged the 2 wires from the alternator (single-phase) to the regulator/rectifier. The voltage across the 2 wires was about 40VAC @ 4,000 rpms. As best as I can determine, the factory spec is about 70 VAC. Might this be a sign of a failing stator?

Thank you for any help you can provide.

Offline Rex

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Re: 1993 Ducati Superlight Charging Issue
« Reply #1 on: April 30, 2019, 03:06:34 PM »
I have no idea what a Ducati Superlight is, but I would put too high a charge voltage down to poor regulation rather than any sort of failing stator, but who knows what goes on with these new-fangled bikes? ;)