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The wrong rectifier? 1988 XV400

Various Yamaha Virago Chit-Chat

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Michelle
Posts: 84
Joined: Sun Apr 21, 2019 8:43 am
Location: Western Australia
What Virago you Own: 1988 XV400 Virago

The wrong rectifier? 1988 XV400

Post by Michelle » Mon Apr 22, 2019 5:29 am

Every time I look at this bike I end up scratching my head as I say... "Why?".
Why does it have a voltage rectifier from a 1981 Yamaha SR185? And why does it even work?
"Yes". I got down on my knees and looked under it, and I'm like "What is that? And where does all this extra wiring go?" :?
So headed for eBay ( my place to identify anything) and found this: https://www.ebay.com.au/itm/Voltage-Reg ... 4902.l9144
It's not meant to be .. that. It's meant to be a nice neat SH569 rectifier for the 1988 XV400 (and XV535) and be hidden inside it's cover/heat sink panel thingy down the left hand-side near the back wheel (if it was there).
Ok. So now I'm like.. "Now what do I do?"
So once again I hit eBay and look up "SH569" and there you go. There's one for sale in New Zealand for less than $20.00, so..... Bought!
But what about the heatsink/cover thingy and is that important?
Searched ebay for heatsink/cover thingy and got nothing. So now I'm thinking if I put all the wiring back to standard and use the SH569 rectifier, I could have a fire if it gets too hot with no heatsink thingy.
Soooooo.. Till I know better I'm putting the SR185s rectifier back on the XV400 and I'll just tidy up the wiring.
Jeepers! This poor bike :shock:
1988 XV400 Virago
On L-Plates

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ViragoJoe
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What Virago you Own: 1996 Virago Special XV1100SH
"Never ride faster than your Guardian Angel can fly!!"

Re: The wrong rectifier? 1988 XV400

Post by ViragoJoe » Mon Apr 22, 2019 6:08 am

Michelle wrote:Every time I look at this bike I end up scratching my head as I say... "Why?".
Why does it have a voltage rectifier from a 1981 Yamaha SR185? And why does it even work?
"Yes". I got down on my knees and looked under it, and I'm like "What is that? And where does all this extra wiring go?" :?
So headed for eBay ( my place to identify anything) and found this: https://www.ebay.com.au/itm/Voltage-Reg ... 4902.l9144
It's not meant to be .. that. It's meant to be a nice neat SH569 rectifier for the 1988 XV400 (and XV535) and be hidden inside it's cover/heat sink panel thingy down the left hand-side near the back wheel (if it was there).
Ok. So now I'm like.. "Now what do I do?"
So once again I hit eBay and look up "SH569" and there you go. There's one for sale in New Zealand for less than $20.00, so..... Bought!
But what about the heatsink/cover thingy and is that important?
Searched ebay for heatsink/cover thingy and got nothing. So now I'm thinking if I put all the wiring back to standard and use the SH569 rectifier, I could have a fire if it gets too hot with no heatsink thingy.
Soooooo.. Till I know better I'm putting the SR185s rectifier back on the XV400 and I'll just tidy up the wiring.
Jeepers! This poor bike :shock:
Regulator/Rectifiers get extremely HOT and need to dissipate that heat. Some Virago's have heat sinks and others do not for some reason, dunno why.

My 1996 Virago 1100 was one with No heat sink on the R/R. It does now! After the diodes went to visit the electronic genie in the sky. Here's what I did to help the replacement keep its cool:
viewtopic.php?f=5&t=772

Starting in 1997 through 1999 which was the last three years for the Virago 1100's these Virago's came with the newly improved Regulator/Rectifier for the 1100's.

The price to switch to this newer upgraded model will make you swoon and shred your wallet:
viewtopic.php?f=5&t=876
ViragoJoe
1996 XV1100SH Virago Special
"Never ride faster than your Guardian Angel can fly!!"
;)

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Michelle
Posts: 84
Joined: Sun Apr 21, 2019 8:43 am
Location: Western Australia
What Virago you Own: 1988 XV400 Virago

Re: The wrong rectifier? 1988 XV400

Post by Michelle » Mon Apr 22, 2019 6:37 am

OMG! The price!! :o
But thank you for that information. I will now definitely keep the SR185 rectifier on the Virago as it does have a heatsink fitted (with fins even). I mean.. what the heck. It works.
In time, I may find the original heatsink thingy for the XV400 and at that time I shall make a decision about should I fit the proper rectifier. We'll see.
Had no idea they get that hot though.
1988 XV400 Virago
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ViragoJoe
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What Virago you Own: 1996 Virago Special XV1100SH
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Re: The wrong rectifier? 1988 XV400

Post by ViragoJoe » Mon Apr 22, 2019 7:44 am

Michelle wrote:OMG! The price!! :o
But thank you for that information. I will now definitely keep the SR185 rectifier on the Virago as it does have a heatsink fitted (with fins even). I mean.. what the heck. It works.
In time, I may find the original heatsink thingy for the XV400 and at that time I shall make a decision about should I fit the proper rectifier. We'll see.
Had no idea they get that hot though.
Here's is a question for you? On most Virago's they place them near a heat source. Like the exhaust plenum or an exhaust pipe. Makes no sense to me.

This one is right next to the Exhaust plenum chamber. Go figure!
Click Imagine to Enlarge:
R-R location near HEAT Source.png
ViragoJoe
1996 XV1100SH Virago Special
"Never ride faster than your Guardian Angel can fly!!"
;)

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Michelle
Posts: 84
Joined: Sun Apr 21, 2019 8:43 am
Location: Western Australia
What Virago you Own: 1988 XV400 Virago

Re: The wrong rectifier? 1988 XV400

Post by Michelle » Mon Apr 22, 2019 7:53 am

Yes. It's about in the same place as mine but the exhaust is nowhere near it. I've also been advised not to use the original rectifier as they are "crap". So it looks as if I'll stay with the one from the SR185. I'll just neaten it up a bit.
1988 XV400 Virago
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ViragoJoe
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Re: The wrong rectifier? 1988 XV400

Post by ViragoJoe » Mon Apr 22, 2019 12:14 pm

Michelle wrote:Yes. It's about in the same place as mine but the exhaust is nowhere near it. I've also been advised not to use the original rectifier as they are "crap". So it looks as if I'll stay with the one from the SR185. I'll just neaten it up a bit.
Great that yours isn't anywhere near a heat source. Being where you are in the summer produces enough extreme heat alone. That's probably why the previous owner decided to go with the SR185 Regulator/Rectifier with heat sink and cooling fins. As long as it is doing the job for you, I would stay with it. Advance research to locate another that will work, would be time well spent. When and if this one decides to give up the ghost.
ViragoJoe
1996 XV1100SH Virago Special
"Never ride faster than your Guardian Angel can fly!!"
;)

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ViragoJoe
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What Virago you Own: 1996 Virago Special XV1100SH
"Never ride faster than your Guardian Angel can fly!!"

Re: The wrong rectifier? 1988 XV400

Post by ViragoJoe » Mon Apr 22, 2019 1:06 pm

<"3. The Voltage Rectifier cover. Missing. Not too sure it's the original Rectifier either.">

Did your original Regulator/Rectifier look like this one less the heat sink cover?

Click Imagine to Enlarge:
1988 XV400 REG-REC.png
<"But what about the heatsink/cover thingy and is that important?">
Yes, It is important for it helps dissipate the heat generated by the Reg/Rec.

Is this item below what you were calling the Heat Sink Thingy?
Click Imagines to Enlarge:
1988 XV400 REG-REC COVER 1.jpg
1988 XV400 REG-REC COVER 2.jpg
1988 XV400 REG-REC COVER with Reg-Rec.jpg
The heat sink cover is available on Ebay:
Below is a 1993, however, should fit your bike with reg/rec. included:
https://www.ebay.com/itm/93-Yamaha-XV53 ... Swq4xcXyNr

Below is a 1995 Heat Sink Cover less Reg/Rec:
https://www.ebay.com/itm/1995-95-YAMAHA ... SwBMpcVLcb
ViragoJoe
1996 XV1100SH Virago Special
"Never ride faster than your Guardian Angel can fly!!"
;)

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Michelle
Posts: 84
Joined: Sun Apr 21, 2019 8:43 am
Location: Western Australia
What Virago you Own: 1988 XV400 Virago

Re: The wrong rectifier? 1988 XV400

Post by Michelle » Tue Apr 23, 2019 7:16 am

That would seem to be the one as the Manuel does give the Rectifier as being SH-569 14.3V - 15.3V for both the 1988 XV400 and 1988 XV535
But let me see if I can't post a pic of an XV400 in (pretty much) it's natural state.
Have a look at where the Regulator is and you might note the cover seems different.
Note: This is the colour of my bike when first produced. Camilla Green. I prefer her in the Firethorn Red.
Click Imagine to Enlarge:
Original 1988 XV400 Virago.jpg
1988 XV400 Virago
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ViragoJoe
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What Virago you Own: 1996 Virago Special XV1100SH
"Never ride faster than your Guardian Angel can fly!!"

Re: The wrong rectifier? 1988 XV400

Post by ViragoJoe » Tue Apr 23, 2019 7:23 am

Oh yeah,
I like her in red also! That color green just doesn't suit her.

The chrome piece under the plastic side cover is the regulator on your bike too?

Is it small that is under that cover. Like the one I showed above. What does it look like?
ViragoJoe
1996 XV1100SH Virago Special
"Never ride faster than your Guardian Angel can fly!!"
;)

User avatar
Michelle
Posts: 84
Joined: Sun Apr 21, 2019 8:43 am
Location: Western Australia
What Virago you Own: 1988 XV400 Virago

Re: The wrong rectifier? 1988 XV400

Post by Michelle » Tue Apr 23, 2019 7:53 am

The part upon my bike is missing. The actual regulator is the one you have showed me, the one available upon eBay, but the cover is different (as you have seen). I have this........https://www.ebay.com.au/itm/Voltage-Reg ... cda00a34c9
But it's just bolted to the frame about where the rectifier should be.
1988 XV400 Virago
On L-Plates

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