Another charging issue question


Information and questions on GL1200 Goldwings (1984-1987)
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Bob2b2
Posts: 12
Joined: Sun Apr 22, 2012 7:19 am
Location: Highlandville, Missouri
Motorcycle: 1986 GL1200A Aspencade, 1999 Harley Sportster 883 XLH, 2003 Dyna Wide Glide

Another charging issue question

Postby Bob2b2 » Tue Apr 24, 2012 6:36 am



Hi all, first post!! I recently purchased my first Goldwing, a 1986, very well maintained, Aspencade with 51,000 miles on it. I had to replace the battery which was no surprise the one in it was 5 years old. So after reading about charging issues with these I decided to check the voltage. I charged the new battery and installed it was getting 12.7v, started the bike and was showing 13.8v at the battery. went for about a 50 mile ride and went to put the bike up,I had let it idle for about 5 minutes before shutting it off (the raditor fan had came on in this time) so I expected the voltage to be lower knowing its not charging well at idle it was at 12.3, started the bike back up voltage remained at 12.3 even at over 2000 rpms. This morning I checked the voltage after it sit overnight it was still 12.3, started the bike up, got 12.9 and slowly rising voltage at 2200rpm. I had put a walmart everstart battery in it cause that is what was in it (not very impressed with its cca's) Is the not charging when hot a rectifier problem or stator?? I have not done the stator test that I have read about on here because the 3 yellow wires seem to have been soldered very well and i believe they need disconnected to check. Should I just ride it more and see how the battery holds up? get a better battery? Thanks for reading, and looking foward to your replies. Bob



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virgilmobile
Posts: 7650
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: Another charging issue question

Postby virgilmobile » Tue Apr 24, 2012 8:04 am

I guess the question is where are you measuring the volts and I assume with a DVM.
If you really want accurate readings,measure with a DVM directly across the battery posts.
A accurate charge rate is measured by substituting the 30 amp fuse with a amp meter.
I got one from Harbor Freight,about $15.It is a in line temporary meter and shows charge rate at the battery.
After cranking,my battery will draw 15 amp and then taper off to near 3 amp within 5-10 minutes.At 2500 rpm constant.
My volts on the battery start at 12.8 and slowly increase in the same amount of time to 13.9 volts.
Both my bikes have volt meters on them and because of the voltage drop in the wiring,the do not reflect the actual battery volts.They all read a bit low.
The ideal condition in a 3 amp charge,13.5-14.2 volts at 3000 rpm.
Things that can mess this up are.....Corroded connections on the regulator,corroded ground connection at the frame,voltage loss due to corrosion on the crimped connectors,etc

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Bob2b2
Posts: 12
Joined: Sun Apr 22, 2012 7:19 am
Location: Highlandville, Missouri
Motorcycle: 1986 GL1200A Aspencade, 1999 Harley Sportster 883 XLH, 2003 Dyna Wide Glide

Re: Another charging issue question

Postby Bob2b2 » Wed Apr 25, 2012 6:34 am

Thanks for the reply... All of my voltage readings were made at the battery post,all of the wire connections seem tight and corrosion free. The battery I have does not seem to charge well even on a charger.I am going to try a better battery and check the voltage again.Thanks again for your help...

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Asphalt guy
Posts: 39
Joined: Sun Apr 15, 2012 8:20 pm
Location: Elida, Ohio
Motorcycle: 1984 Honda Aspencade GL1200

Re: Another charging issue question

Postby Asphalt guy » Sat May 05, 2012 7:00 am

Check the plug connnected to the selinoid. I just had to rewire mine. I was getting 12.5 volts at idle, before I noticed the plug was burnt. I found a rewire fix on here, and am now getting 14.5 volts at idle. VERY easy to do.

sparkyman
Posts: 38
Joined: Mon Apr 16, 2012 8:26 pm
Location: gaines michigan
Motorcycle: 2008 1800 comfort pkg, navigation

Re: Another charging issue question

Postby sparkyman » Fri May 11, 2012 5:43 pm

Hello I am still having problems with my 1984 aspencade replaced the stator and everything seemed fine but rode it to work today and the battery was dead when I tried to go home. I charged the battery enough to get home and ran a few test I am getting 12.8 volts with engine off 13.8 at idle and 15.2 at 3000 rpm just wondering if it could be my regulator 15.1 seems a little high also it has an new battery any ideas thanks.

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virgilmobile
Posts: 7650
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: Another charging issue question

Postby virgilmobile » Fri May 11, 2012 10:09 pm

15.1 is a bit high,and one guy found that his "new" battery had a bad cell and would not pass the load test.
Another fellow had a bad parasitic draw.Kinda like leaving the dome light on.A amp meter test will show this.
Normal drain on a battery with the bikes electronics should be less than 0.050 amp.
Here's the test.Use a DVM and measure the voltage,with the engine at 300 rpm, between the battery positive post and the black wire at the regulator.
Yes i know it's switched ignition and has 12 volts on it too,but voltage drops in connectors,switches and wiring can upset the regulator circuit.
You should measure no more than 0.5 volts.DC
I have heard of one guy that measured well over 1 volt.
This loss is trying to be made up by the regulator allowing more volts to come out of it rather than shunting it off to ground.
The regulator is receiving a inaccurate reading from the battery.
If this is the case,"we" usually just cut the wire and wire in a relay from the battery.
Here's a post about the same thing.http://www.goldwingdocs.com/forum/viewt ... =4&t=10347
Here's my schematic to help.If the voltage drop is 0.5 or less and the output of the regulator is above 15.2 volts,load test the battery first and then replace the regulator.

sparkyman
Posts: 38
Joined: Mon Apr 16, 2012 8:26 pm
Location: gaines michigan
Motorcycle: 2008 1800 comfort pkg, navigation

Re: Another charging issue question

Postby sparkyman » Sat May 12, 2012 5:42 am

Thanks for the info I have already worded a reg and didn't think about the battery since its new but will have it tested. I checked it again and was getting 15.7 volts just off idle I will let you know what I find out.




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