1985 GL1200 LTD Reg/Rec


Information and questions on GL1200 Goldwings (1984-1987)
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Rednaxs60
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Motorcycle: 1985 GL1200 LTD, 2008 GL1800

1985 GL1200 LTD Reg/Rec

Postby Rednaxs60 » Sun Apr 03, 2016 11:35 am



Did some wiring clean up yesterday and finally noticed that I have a Shindengen FA574A-12 reg/rec installed. This is apparently the reg/rec upgrade for the '86 SEI. Since both bikes are virtually the same, works well. My question is, is it a mosfet style or shunt style reg/rec? Been looking on line and have yet to find specs regarding this reg/rec.

Cheers


"When you write the story of your life, don't let anyone else hold the pen"

Ernest

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Rednaxs60
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Re: 1985 GL1200 LTD Reg/Rec

Postby Rednaxs60 » Mon Apr 04, 2016 2:10 pm

Have found from other sources that the reg/rec installed is an FET transistor shunt style regulator that is an upgrade fro the OEM original.

Have also been looking at a series reg/rec based on reconditions on other forms. Have looked at the SH775 and SH847 from roadster cycle.com. The SH775 is a 30 amp variant whereas the SH847 is a 50 Amp. The SH775 will probably do the job as the main fuse on my '85 LTD is 30 amp; however, the stator on my bike is approximately 500 watts (approximately 50 amps) so the SH847 will definitely do the job. It appears to have been extensively tested as well.

I like the fact that a series reg/rec only allows enough charging amperage to do the job, and when no charge is required nothing goes through. No path for the current to flow to, no output from the stator.

My stator is good right now, and I've decided to install the SH847 reg/rec. Will post more hen I receive, install and use it.

Cheers
"When you write the story of your life, don't let anyone else hold the pen"

Ernest

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Rednaxs60
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Re: 1985 GL1200 LTD Reg/Rec

Postby Rednaxs60 » Mon Apr 04, 2016 9:15 pm

Ordered the SH847 this morning and it's in the mail already. Have been corresponding with Jack from the company and posed a question about the in-line capacitor that is between the RR and starter solenoid on the charging wire. A capacitor works essentially the same as a capacitor in this instance in that it absorbs energy, discharges energy and in doing so smooths out the flow of voltage and power. I surmise that it is there to do just this because of the shunt style RR that takes the extra power from the stator and puts it to ground, using the capacitor to take up the slack as the RR transfers power from ground to the battery because of load and conversely the other way when requirement is reduced. Have sent schematic of the power distribution system for the LTD, and waiting for a response.

Here is the power distribution schematic for the LTD:
"When you write the story of your life, don't let anyone else hold the pen"

Ernest

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Rednaxs60
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Re: 1985 GL1200 LTD Reg/Rec

Postby Rednaxs60 » Tue Apr 12, 2016 8:13 pm

Received the SH847 RR from Roadstercycle today. Install will have to wait until next week, short week and course starting Thursday. Looking forward to the install and how the bike performs/operates with it installed.

Cheers
"When you write the story of your life, don't let anyone else hold the pen"

Ernest

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Asp
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Re: 1985 GL1200 LTD Reg/Rec

Postby Asp » Wed Apr 13, 2016 12:36 pm

Any chance of a pic of that capacitor?
If its a small value one (around 1mfd) I suspect its there for noise suppression, whereas if its a larger one (around 1000uF) it could be doing what you thought it might.
I can't see the schematic clearly enough to make out if theres a value noted

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Rednaxs60
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Re: 1985 GL1200 LTD Reg/Rec

Postby Rednaxs60 » Wed Apr 13, 2016 2:06 pm

Asp wrote:Any chance of a pic of that capacitor?
If its a small value one (around 1mfd) I suspect its there for noise suppression, whereas if its a larger one (around 1000uF) it could be doing what you thought it might.
I can't see the schematic clearly enough to make out if theres a value noted


Going to look at installing the new RR next week. Will look at the capacitor then. Cheers
"When you write the story of your life, don't let anyone else hold the pen"

Ernest

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Asp
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Re: 1985 GL1200 LTD Reg/Rec

Postby Asp » Thu Apr 14, 2016 5:35 am

I'm following this with interest, as I'm also considering changing to a series regulator, to give the stator an easier life.
I think the SH775 would be ok though on my Aspy, as its 350w stator would put out less than 30A.

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Rednaxs60
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Re: 1985 GL1200 LTD Reg/Rec

Postby Rednaxs60 » Thu Apr 14, 2016 1:10 pm

Agree that the SH775 is probably good for the ASPY. The reason I went with the SH847 is the 500 watt (approx 50 amp) stator. The extra power is mostly for the FI system.

I am looking at putting the connector back in between the stator and the RR beside the battery. I will be using a waterproof, marine grade connector from my local marine store. As has been mentioned on anothe site, clean/dry/tight/proper size wiring and monitor. Should be good.

Where I am going to locate the new RR is a bigger question.

Cheers
"When you write the story of your life, don't let anyone else hold the pen"

Ernest

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Rednaxs60
Posts: 726
Joined: Wed Nov 18, 2015 12:44 pm
Location: Victoria, British Columbia, Canada
Motorcycle: 1985 GL1200 LTD, 2008 GL1800

Re: 1985 GL1200 LTD Reg/Rec

Postby Rednaxs60 » Thu Apr 14, 2016 1:26 pm

Asp wrote:Any chance of a pic of that capacitor?
If its a small value one (around 1mfd) I suspect its there for noise suppression, whereas if its a larger one (around 1000uF) it could be doing what you thought it might.
I can't see the schematic clearly enough to make out if theres a value noted


Here is a picture of the capacitor. looks Ike a 0.47 mfd.

"When you write the story of your life, don't let anyone else hold the pen"

Ernest

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Asp
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Location: Shrewsbury UK
Motorcycle: 1987 GL1200AH Aspencade

Re: 1985 GL1200 LTD Reg/Rec

Postby Asp » Thu Apr 14, 2016 2:08 pm

Definitely a noise suppression capacitor then, being 0.47mfd. Personally I'd keep it in circuit.




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