81 Interstate voltage

Information and questions on GL1100 Goldwings (1980-1983)
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Pappy Wilson
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Joined: Mon Nov 09, 2009 5:33 pm
Location: Pt. Pleasant, WV
Motorcycle: 1989 Pacific Coast
1981 Goldwing Interstate

81 Interstate voltage

Post by Pappy Wilson » Mon May 31, 2010 8:23 pm

I have an 81 Interstate and am concerned about the voltage. It usually rides a little below 12 volts until about 3000 rpm and then goes slightly above. I have checked the voltage across the battery and it is indeed about 12 volts until the 3 grand mark and then it goes to about 13.5 volts. It always starts and has never let me down but I am concerned. Any advice would be appreciated
Pappy Wilosn

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Re: 81 Interstate voltage

Post by WingAdmin » Mon May 31, 2010 9:44 pm

That sounds about right. Below 2500-3000 RPM, you're actually draining the battery to keep the bike running - the stator doesn't generate enough power to run the bike and charge the battery at idle/low RPM.

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