bizzarre gl1200 intermittent charging issue


Information and questions on GL1200 Goldwings (1984-1987)
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daegerda
Posts: 5
Joined: Sat Aug 17, 2013 8:49 pm
Location: Clarks Grove, MN
Motorcycle: 1986 GL1200SEI

bizzarre gl1200 intermittent charging issue

Postby daegerda » Sat Aug 17, 2013 9:22 pm



Well This has me stumped. I have a 86 1200 SEI that has the stator and regulator hard wired, (no more plugs) It always had about 14 volts running down the road, A couple months ago I noticed it was hanging around 13.8, I knew my battery was getting weak so I replaced it and I was back to 14. Wed night I had just left home and noticed it was 12.5 and when I grabbed the brake 11.7. Of course my first thought was STATOR, However I shut it off and restarted it and... 14.3 volts. Odd. So I took off again and got 500 feet and looked at the gauge and 12.5! :evil: Shut it off, restarted, 14.2, rode 100 feet, 12.5. I couldn't get it to act up sitting still, revved it up, banged it into gear, kicked it, and stayed on 14+ till I rode it at least 50 feet. Tried it a dozen times with the same result, ick. Neeeeexxxxxt evening I started it up, 14 volts, put on 20 miles and never once saw anything under 14 volts except when I was braking when it went to 13.7... Normal enough. Soooooooooooo today. Start it up, 14 volts, ride 300 yards, 12.5 and dropping, Restart, 14+ volts, 50 feet, 12.5, If I am riding along at 12.5 and turn the key off and back on it stays at 12.5, however If I pull in the clutch and turn it off and then bump start it, 14.5, holy balls, (note... when I just turn off the key with out pulling in the clutch the volts climbs (I saw 14.9) but when I turn it back on 12.5) So I have let it idle for 5 min and it keeps charging, a couple times I barely touched the throttle and it quit charging, most of the time I can't get it to quit charging without riding it a bit, I jerked on all the wires I could touch when it was idling and it never quit charging. I did hook up a separate volt meter for a while to be sure it wasn't just the bike meter. I have never heard of a stator or regulator acting this way. I do have an extra regulator which it the first thing I'm going to try unless one of you Tells me what to do and if it fixes it I'll mail you $20 bucks, Good luck. Dave



mshruman
Posts: 27
Joined: Sat Feb 23, 2013 10:36 pm
Location: Cripple Creek, colorado
Motorcycle: 1986 honda 1200 goldwing aspencade sei
Contact:

Re: bizzarre gl1200 intermittent charging issue

Postby mshruman » Sat Aug 17, 2013 10:11 pm

:mrgreenSince you tried volmeter I would check ground wires and regulator connector, if those are good would replace regulator , have seen corroded battery connections do that but since bike turns over dont think so, try cleaning battery conn3ctions anywho, cant hurt :mrgreen:

Honker91
Posts: 32
Joined: Tue Jul 10, 2012 6:03 pm
Location: continental ohio
Motorcycle: 1985 aspencade gl 1200

Re: bizzarre gl1200 intermittent charging issue

Postby Honker91 » Thu Aug 29, 2013 3:20 pm

Check the grounding ring and bolt on the regulator, it is the bolt that holds the mount on. Take it of and clean the paint off both sides of the bracket around the bolt hole and clean ground ring off. See if that helps.

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virgilmobile
Posts: 7646
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: bizzarre gl1200 intermittent charging issue

Postby virgilmobile » Thu Aug 29, 2013 4:07 pm

I did hook up a separate volt meter for a while to be sure it wasn't just the bike meter.


Did you hook your extra volt meter directly to each battery post?

daegerda
Posts: 5
Joined: Sat Aug 17, 2013 8:49 pm
Location: Clarks Grove, MN
Motorcycle: 1986 GL1200SEI

Re: bizzarre gl1200 intermittent charging issue

Postby daegerda » Mon Sep 02, 2013 6:32 pm

I did hook the other meter direct to the batt. When I started checking I found that the fool had used crimp on butt connectors for part of the hard wiring of the alt. So I soldered every thing and it has worked flawless till today. Saw it was down to 12.2 volts, Well I shut if off and restarted and it went right to 14.3, ride it 1/4 to 3/4 mile and it drops slowly to 12.2 I rode it 12 miles and it stayed on 12.2 so I got home ok but.... Any more Ideas? Now it will also start to charge if I slow down. Or if Im going 60 and pull in the clutch it starts to charge in a few seconds. then quits again in a 1/4 to 3/4 mile. HELP

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virgilmobile
Posts: 7646
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: bizzarre gl1200 intermittent charging issue

Postby virgilmobile » Tue Sep 03, 2013 8:11 am

Does your bike still have the original dog bone fuse in the starter solenoid.?

If it does,cut both red wires off the plug and solder them to a heavy duty 30 amp fuse holder and 30 amp fuse..Attach the other end directly to the battery side of the solenoid....
This eliminates possible corrosion in the plug and/or a microfractured dog bone fuse.


Here's the entire post of my service....viewtopic.php?f=5&t=12522

User avatar
virgilmobile
Posts: 7646
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: bizzarre gl1200 intermittent charging issue

Postby virgilmobile » Tue Sep 03, 2013 8:39 am

Now it will also start to charge if I slow down. Or if I'm going 60 and pull in the clutch it starts to charge in a few seconds. then quits again in a 1/4 to 3/4 mile.


This bothers me.....why would it charge or volts increase when the RPM's drop..?????
I'm thinking on the keyboard now....higher rpm=higher output from the stator...more power..more volts...more heat generated electrically.....reduce the rpm and the volts slowly increase.....
stator puts out less power...it drops from a 25 amp capable stator down to a 15 amp stator output.

something is breaking down as it gets hot....not engine hot....electrical hot....

Here's how I'd proceed....bypass the dogbone fuse if it hasn't been done already.....
2nd...operate the bike till it starts to act up....pour water directly on the regulator to cool it and watch the volts....
It is possible,although remote,that the stator windings are breaking down when heating up....
Remember,the stator gets hot as the magnets are spun around...faster magnetic flux absorption and collapse generates more heat...idle it back and within seconds,the stator starts to cool....
You would need to measure each coil for AC volts under load while it's acting up to verify this...
The measurement could be at the regulator....It's 3 phase AC so you would measure each pair before and after....Unhooked there around 25 volts AC at a idle..Loaded to the regulator,there closer to the 12 volt mark.
You might find one phase going a bit lower than the others,a bad stator...
If it goes higher,the regulator is opening up..A diode inside unloading one phase of the stator.

This measurment is a comparison to the other 2 phases of the stator.2 normal one low or 2 normal one high.....




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