unique charging issue


Information and questions on GL1200 Goldwings (1984-1987)
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86pearlblue
Posts: 100
Joined: Sat Sep 22, 2012 6:04 pm
Location: Hartford, Connecticut
Motorcycle: 1986 gl1200a

unique charging issue

Postby 86pearlblue » Sat Sep 22, 2012 7:35 pm



after searching this site and researching all over, it seems that I have an issue I can't find an answer to. I have an 86 GL1200A that seems to discharge while riding. I have performed all the checks on the stator, regulator etc. that I could find. Here's what I get:

Performing the stator check in the manual, it checks out.
Performing the regulator checks in the manual, all's well (even though it was replaced just a month ago)
While running, the three stator wires, when checked in pairs to each other, produce 30v AC (@2000 rpm)
Checking the red/white wires out of the regulator, I get about 12.5 v DC @ idle and about 13.5 @ 2000 rpm
Voltage @ battery drops (slowly, but consistently) at idle until I get to over 3000rpm.

with the battery fully charged, I can run through a tank of gas, but by the time I go another 200 mi., The battery is too weak to start the bike. Almost stranded me a couple weeks ago, but as long as I kept the revs up, it ran. Drop below 3000 rpm and the dash starts blinking, doesn't want to run, etc.

What am I missing?



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redial
Posts: 1993
Joined: Mon Jan 03, 2011 1:17 am
Location: Kapunda, SouthAustralia
Motorcycle: 1997 GL1500 Spectre Red Aspencade

Re: unique charging issue

Postby redial » Sun Sep 23, 2012 12:04 am

Has the battery been load tested? It could be that the battery is not holding its charge, and while you are going along everything is fine, but when stopped there is not enough 'smoke' to make it turn over, because the battery has not enough smoke left.
Len in Kapunda

The world is not going to finish today, as it is already tomorrow in Australia and New Zealand, and other islands of foreign nations such as Guam and Samoa.

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86pearlblue
Posts: 100
Joined: Sat Sep 22, 2012 6:04 pm
Location: Hartford, Connecticut
Motorcycle: 1986 gl1200a

Re: unique charging issue

Postby 86pearlblue » Sun Sep 23, 2012 6:22 am

I just bought and installed new battery @ beginning of season. Should it need to be tested? And wouldn't the meter still show over 12v when running? when charged, the battery will hold charge for at least two weeks, it only seems to discharge while riding...

I should also note that the stator connector near the battery was clipped and wires soldered together, all after market lighting has been removed (except the LED aux brake light strip that I installed, so I know it wasn't bastardized), and the Panasonic noise filter for the stereo was also removed (as the connectors were iffy and it didn't seem to work anyway) so the voltage regulator/rectifier is plugged into it's proper connector at the harness.

thanx

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WingAdmin
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Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: unique charging issue

Postby WingAdmin » Mon Sep 24, 2012 10:11 am

The numbers sound OK. Generally Goldwings will NOT generate enough voltage at idle to run the bike and charge the battery both. It is normal to discharge the battery if left sitting at idle.

I'd run the bike up to 3000 RPM, then check the voltage at the battery terminals. Compare that to what you have coming out of the regulator. If there is a difference (i.e. battery is lower) then you may have a bad connection or ground somewhere between the two (bad battery cable could also be a culprit).

Or...as mentioned, you could simply have a dud battery that has given up the ghost early on. It's been known to happen.

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virgilmobile
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Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
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84 GL 1200 I

Re: unique charging issue

Postby virgilmobile » Mon Sep 24, 2012 12:38 pm

If your battery checks OK, the problem may be in the connections to the stator and regulator.
Voltage and current loss can occure in corroded crimp connections even if the terminal looks clean.

Remember,they are unprotected crimped bare copper wires that have been outside for 30+ years.
I have been hard soldering all the charging system wires on mine.

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firstwing85
Posts: 86
Joined: Mon Aug 15, 2011 11:33 am
Location: Aldergrove BC Canada
Motorcycle: 1985 GL1200 Limited Edition
1983 V65 Magna

Re: unique charging issue

Postby firstwing85 » Mon Sep 24, 2012 12:47 pm

I had a strange thing happening on my bike as it was discharging and it would kill my stators.
I found that the wiring harness for my trailer was not done right and rubbed through on the frame and because it was not fused proper by the person that installed it.
it would drain my battery until it wouldn't start the bike anymore.

I would check all wiring that has been added aftermarket for wearing, you might have the same kind of problem that somewhere you have a live wire touching somewhere when the key is on.
that would explain why the battery holds the charge when it parked.
Johan

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86pearlblue
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Joined: Sat Sep 22, 2012 6:04 pm
Location: Hartford, Connecticut
Motorcycle: 1986 gl1200a

Re: unique charging issue

Postby 86pearlblue » Mon Sep 24, 2012 8:09 pm

Thanks guys. stripped the bike down today and found quite a few after market electronics buried under the fairings. most of it was associated with the cb/stereo. After removing all that (which was a chore due to connectors having been cut to put their own connections in, then trying to figure out the original configuration) it seems to be better. Now charges and tests at around 13.25v at the battery @ 2000 rpm.

Having done this also seems to have cleared up ignition noise in the stereo. Time and miles will tell.
Thanks again

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firstwing85
Posts: 86
Joined: Mon Aug 15, 2011 11:33 am
Location: Aldergrove BC Canada
Motorcycle: 1985 GL1200 Limited Edition
1983 V65 Magna

Re: unique charging issue

Postby firstwing85 » Mon Sep 24, 2012 9:40 pm

I have to thank the guys on these wing forums too for the help I received when I needed it for my bike.
If I can return help to someone else, that is what we are here for. :D :D
Johan

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86pearlblue
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Joined: Sat Sep 22, 2012 6:04 pm
Location: Hartford, Connecticut
Motorcycle: 1986 gl1200a

Re: unique charging issue

Postby 86pearlblue » Tue Sep 25, 2012 9:51 am

one more question... (yeah, right! LOL)

The manual tells me that with the key off, I should have .5 milliamp or less discharge rate. I have 2.8 milliamps. Removing the stereo drops it to 1.8. Disconnecting the digital dash from behind the headlamp drops it to .7 milliamps. Is this correct, or are there still other issues at play?

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86pearlblue
Posts: 100
Joined: Sat Sep 22, 2012 6:04 pm
Location: Hartford, Connecticut
Motorcycle: 1986 gl1200a

Re: unique charging issue

Postby 86pearlblue » Tue Sep 25, 2012 4:40 pm

UPDATE:

started the day @ 12.67V, went 120 mi. and had 12.75v when I shut it down. Going in the right direction!!

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tom84std
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Re: unique charging issue

Postby tom84std » Thu Sep 27, 2012 5:04 am

I bought my first Wing in 2002. A '79. It had a lot of lights, really big trunk and bags. All the extra lights had been installed with Scotchlocks.



The Scotchlocks had caused several failures and I'm sure they had caused alternator failure or were at least a factor in it's demise as I had to remove the engine and replace the stator soon after purchasing the bike. I removed all the extra lights and all the extra wiring and especially those Scotchlocks! I modified the frame slightly to mount some old HD floorboards for my passenger and replaced the big bags and trunk with a smaller trimmer trio of removable KG bags grafted off a BMW. Corbin seat, all wires soldered and properly insulated, electrical system functioning perfectly.



If I had left the scotchlocks on it would have resulted in a string of failures, but by removing them and hard soldering everything I was able to preserve the new alternator and keep the system healthy. I'm sure this was a case in which the previous owner had trusted a dealer to install something and that dealer chose to do a quick fix not caring for the long term but rather a quick turnaround and the resulting quick buck. After the second pic was taken we put 30,000 miles on the bike and it's electrical system totally trouble free. Don't ask me how I feel about crimped connectors and Scotchlocks unless you're ready to hear an ear full!




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