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GL1100 Charging system

1147 Views 4 Replies 4 Participants Last post by  dan filipi, 
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I recently purchased a really clean '81 GL1100 naked wing. A few carb problems, but I think Mark Z & I got them ironed out this morning. But, a check of the charging system showed good charge at idle, 13.0 to 13.4v. When run up to 3000 rpm, it pegged at an even 15.0v. Any rpm above 2500 showed an even 15.0v, no waiver.

Was there a regulator or stator designed to put out this type voltage? Just curious because of the even 15v and no bouncing around... or am I soon to replace one or the other?

Just looking for the crystal ball so many of you provide. :)

Thanks
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Bagmaster
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Most of the 1100's will top out at 14.8 volts normally so an even 15 steady isn't all that high. Should be good for a few more years unless it starts going over 15.5 then I'd look at replacing a regulator/rectifier.

One thing that will help the system is to upgrade to a newer AGM battery. No more over flows of acid and the AGM batteries can take a higher voltage than the old acid type batteries.
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Thanks. The upper limit was my worry, all the other bikes I've had seemed to peak out at around 14.5 at high rpm. Yup, next electrical upgrade is the AGM battery... but my GL1500 gets one first. :)
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DaveO430
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Check the ground connection at the front right coil bolt. If it is loose or corroded it could cause the voltage to go high, and other problems.
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dan filipi
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If it were mine I'd track down why it's puting out 15 volts, that's too high.
After having one AGM die I've gotten pretty anal about battery care so I called Odyssey battery and was told 15 volts will reduce the life of an AGM.
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