Voltage regulators revisited.

[TheRadBaron]

My '84 needs a new battery and I plan on getting an AGM.  I don't want to risk damaging the expensive battery by overcharging it so I'd like to address the voltage regulator.  It sounds like the Transpo adjustable regulator is a good solution, but I couldn't really find any information here about it such as a part number.
This regulator looks slick, too.  http://www.electrosport.com/street-bikes/yamaha/fj1200-86-93/nippon-denso-internal-regulator.html
I found a thread from about a year ago where they were being discussed, but no one had reported back after installing one to say how it worked. 
Has anyone tired one of those out? 
What's the best solution for the voltage regulation on these bikes?

[Travis398]

It might be a good idea to test the voltage output to see if it needs to be replaced.

If so I believe Randy has one in stock, I was just asking about these here http://www.fjowners.com/index.php?topic=3347.msg27944#msg27944

[Pat Conlon]

I recommend the external voltage regulator. Isolated from the engine heat and vibrations. Dunno what causes the internal regulators to go wacky, heat? Vibration? Both? Good luck with testing. In the shop, I could not replicate what was happening on the road.
I use the Transpo IB301A which is a adjustable regulator, preset to 14.3 volts. I dialed mine back to 14.0 volts.
scroll down: http://cpgenerator.com/voltageregulators.html
$37 bucks, not too bad.

All is well  Thank you Ed for showing me how to do it.....HTH

[TheRadBaron]

Thanks Pat.  Even if mine tests okay I plan on upgrading it.  If it's a common problem I'd like to fix it, even if it's a preemptive fix.  Do you have instructions available for installing the Transpo unit?

[Pat Conlon]

Here's a write up in the Files section under modifications: http://www.fjowners.com/index.php?topic=661.0
Here's some more info. from the yahoo forum: http://autos.dir.groups.yahoo.com/group/yamahafj/files/FJ%20Modifications/Regulator%20Info/
Working slowly, it took me a hour to do it....Cheers!   Pat  

[simi_ed]

HTH

[TheRadBaron]

Man, I gotta brush up on my internet acronyms.  Military jargon I can do, but I can't figure this stuff out.
What does HTH mean?

[Harvy]

HTH = HOPE THAT HELPS

HTH
Harvy

[FJmonkey]

HTH = HOPE THAT HELPS

HTH
Harvy

WLA = We Love Acronyms. 

[Travis398]

I recommend the external voltage regulator. Isolated from the engine heat and vibrations. Dunno what causes the internal regulators to go wacky, heat? Vibration? Both? Good luck with testing. In the shop, I could not replicate what was happening on the road.
I use the Transpo IB301A which is a adjustable regulator, preset to 14.3 volts. I dialed mine back to 14.0 volts.
scroll down: http://cpgenerator.com/voltageregulators.html
$37 bucks, not too bad.

All is well  Thank you Ed for showing me how to do it.....HTH

Pat, where was this useful information when I asked the question?

This doesn't have anything to do with Weymouth does it?



as far as the HTH signature, It does come across with a negative feel.

as if they are saying "I hope everyone else post is wrong, Hope mine is the one that helps you"

HTH 

[simi_ed]

Whoa a minute.  HTH means "Here to help".  If that comes across as a negative ...

HTH

Ed

[Klavdy]

HTFU or STFU.

HTH,,,

[Pat Conlon]

Pat, where was this useful information when I asked the question?

This doesn't have anything to do with Weymouth does it?

Hey Travis, sorry I missed your question. When did you ask it? (edit: never mind, I see your post, I just missed it)
As a moderator, I do try to review the all questions, when I'm not sure, I don't answer. I do know first hand about the voltage regulator issue after living with the problem for 25 years.... before I got off my lazy ass and fixed it.
I think we should pull all the Vreg info.over from the Yahoo forum and have it here in our Files section so folks have better access.

I don't understand your second question, what does Bob have to do with a Transpo Vreg? Please clarify.

as far as the HTH signature, It does come across with a negative feel.

as if they are saying "I hope everyone else post is wrong, Hope mine is the one that helps you"
 

HTH = Hope this Helps... and you took it as a "negative feeling"? Come on Travis. I'm sorry you "feel" that way. It's not what I intended... Peace out.  Pat

[junkyardroad]

My '89 had an overcharging problem when I bought it. The battery boiled over and caused some cosmetic damage which in turn led him to sell it to me.  After a few minor issues in even with the agm battery I decided to do the Transpo regulator mod per the pdf links above.  Very easy to do and worked great (so far). The regulator was allegedly set a 14.3 but it read a steady 15.5 so a quarter turn counterclockwise turn to the adjuster was nessessary.  The voltage varies from 13.5 at idle to 14.9 at 5000 and up.

Pretty happy with this, thanks to all who posted the tech.

[racerrad8]

The new RaceTech Electronics regulator is now available.

Here is the link to the installation video; http://www.fjowners.com/index.php?topic=6427.0

They are listed here; Voltage Regulator

Randy - RPM