LActrical alternator output


Information and questions on GL1500 Goldwings (1988-2000)
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waynedudes
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Joined: Sun Jun 19, 2016 6:14 am
Location: Richmond, KY
Motorcycle: 1994 GL1500 with CSC Trike conversion

LActrical alternator output

Post by waynedudes »



I have a 94 GL 1500 with 85 amp LActrical alternator. It has been used very little since I installed it. That was a couple or three years ago. Output on bike digital gauge shows 12.8 to 13.1 while driving. I also checked voltage with my multi meter at home while running. It shows 13.2 to 13. 3 volts. But the voltage is also fluctuating up and down? Should I begin to be concerned that the alternator is about to fail? Should not the alternator output be 14, or closer to 14 volts than 13 volts? Battery when shut off shows 12.68 volts for the AGM battery. Thanks for any assistance.



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MikeB
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Re: LActrical alternator output

Post by MikeB »

If it were me, yes I would be concerned. From what I know of the LActrical alternators, they do not have a very good track record for longevity.
I've read far too many complaints about them and personally would not be inclined to buy one.
14.1 to 14.6 volts is more along the lines of what you should be reading at 2000 RPM. Fluctuating readings could be bad brushes or commutator.
MikeB
1998 - GL1500 w/184,500 miles ~ 2017 - GL1800 w/13000 miles
USAF Avionics Communications Tech - 18 Years / Flight Engineer C-130E - C-141B - 6 Years. Retired.
Industrial Maintenance Tech - 22 years.
Retired in Tacoma, WA

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waynedudes
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Location: Richmond, KY
Motorcycle: 1994 GL1500 with CSC Trike conversion

Re: LActrical alternator output

Post by waynedudes »

I figured out what the problem was. When I installed the LActrical alternator, a couple of years ago... I did not connect the wire, that is covered with a boot!!!!!!!!!!!!! I have always wondered why I only had about 13.3 or less???? Now I know...
I was removing the alternator and noticed that the wire was not connected. As soon as I connected the other wire and fired it up, I have 14.1 or better at idle on my multi meter. Guess next time i will have to be a little more careful. Haaa

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MikeB
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Joined: Fri Dec 04, 2009 12:54 pm
Location: Tacoma, WA
Motorcycle: 1998 - GL1500 Aspencade
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2017 - GL1800 Audio Comfort
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Re: LActrical alternator output

Post by MikeB »

waynedudes wrote:
Thu Jun 11, 2020 3:33 pm
I figured out what the problem was. When I installed the LActrical alternator, a couple of years ago... I did not connect the wire, that is covered with a boot!!!!!!!!!!!!! I have always wondered why I only had about 13.3 or less???? Now I know...
I was removing the alternator and noticed that the wire was not connected. As soon as I connected the other wire and fired it up, I have 14.1 or better at idle on my multi meter. Guess next time i will have to be a little more careful. Haaa
The wire on the rear of the alternator? Do you mean it was not tight? Because if it was not on there at all, you probably would not have done much riding at all and the battery would have been dead.
MikeB
1998 - GL1500 w/184,500 miles ~ 2017 - GL1800 w/13000 miles
USAF Avionics Communications Tech - 18 Years / Flight Engineer C-130E - C-141B - 6 Years. Retired.
Industrial Maintenance Tech - 22 years.
Retired in Tacoma, WA

Kryakozavr
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Location: Waltham, MA.
Motorcycle: 1999 Gl1500, 2007 Honda Shadow Sabre 1100, 2007 Silverwing 600.

Re: LActrical alternator output

Post by Kryakozavr »

Less than 13.8 and more than 14.5 - bad news. (on 3500-4000 rpm)
Full charged lead acid battery = 12.75 after 15 min sit without connection to mc.
Sorry for my poor English.



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