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Re: Fork preload adjusters

PostAuthor: jonno51 » Thu May 24, 2018 3:46 pm

faffi wrote:
jonno51 wrote:
faffi wrote:I noticed that these share the same fork spring retainers with the 84-93 Viragos:


I've just mailed the Hong Kong people asking whether they will fit, making it clear that my bike does not have the air adjustment.


I just checked Partzilla, and although the list only goes from the 1983 Seca 900 and then from the 1984 Virago 700/1000 through the 1993 XV1100, if you look up the later year you will find that the 1100 use this through 1997 - only 1998/99 use a different top spring retainer.


So does that mean the SRX items will fit?
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Re: Fork preload adjusters

PostAuthor: faffi » Thu May 24, 2018 4:47 pm

Well, if Partzilla is right, basically meaning Yamaha, since that's where they've copied their information from. I know there is a fault with the XV1100 clutch in Yamaha's list, meaning it isn't totally fault free. But I would say it is 99% probable that the SRX caps will fit perfectly. Considering the low price, I personally would have bought them. This seems to confirm they should fit https://www.ebay.com/itm/Yamaha-Seca-FJ ... 1413207474
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Re: Fork preload adjusters

PostAuthor: jonno51 » Fri May 25, 2018 2:07 am

faffi wrote:Well, if Partzilla is right, basically meaning Yamaha, since that's where they've copied their information from. I know there is a fault with the XV1100 clutch in Yamaha's list, meaning it isn't totally fault free. But I would say it is 99% probable that the SRX caps will fit perfectly. Considering the low price, I personally would have bought them. This seems to confirm they should fit https://www.ebay.com/itm/Yamaha-Seca-FJ ... 1413207474


I agree, so I've ordered them. I'll keep you updated.
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Re: Fork preload adjusters

PostAuthor: faffi » Fri May 25, 2018 2:39 am

Please do!
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Re: Fork preload adjusters

PostAuthor: Brodie » Wed May 30, 2018 3:01 am

Yep. Will be good to see if these work.
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Re: Fork preload adjusters

PostAuthor: donthedec » Mon Jun 04, 2018 11:08 am

Hi I have a 1996 uk yamaha xv1100 virago.
And I have had my top screw in cap measured by an engineering place.
As I need a new one and can't find a oem replacement..
The measurement of mine are 31mm with a 1 mm pitch...
they told me Japanese threads are different..
That's why I was asking about the Chinese
Preload adjusters..
And if anyone has used them..!
Regards
Don

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Re: Fork preload adjusters

PostAuthor: jonno51 » Tue Jun 05, 2018 3:12 am

donthedec wrote:Hi I have a 1996 uk yamaha xv1100 virago.
And I have had my top screw in cap measured by an engineering place.
As I need a new one and can't find a oem replacement..
The measurement of mine are 31mm with a 1 mm pitch...
they told me Japanese threads are different..
That's why I was asking about the Chinese
Preload adjusters..
And if anyone has used them..!
Regards
Don


Mine just arrived. I'm still working on other parts of the bike at the moment so I won't be trying to fit them for a while. Can tell you the threaded part measures at 33.8 mm.
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Re: Fork preload adjusters

PostAuthor: donthedec » Tue Jun 05, 2018 10:53 am

Yours forks must be bigger than mine because mine are Definitely 31 mm maybe usa are different..
I'm going to get in touch with yamaha uk

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Re: Fork preload adjusters

PostAuthor: mark75 » Tue Jun 05, 2018 1:20 pm

donthedec wrote:Hi I have a 1996 uk yamaha xv1100 virago.
And I have had my top screw in cap measured by an engineering place.
As I need a new one and can't find a oem replacement..
The measurement of mine are 31mm with a 1 mm pitch...
they told me Japanese threads are different..
That's why I was asking about the Chinese
Preload adjusters..
And if anyone has used them..!
Regards
Don



p/n 31A-23111-31-00 is no longer available OEM but was used on these models ---> https://www.mrcycles.com/oemparts/partsearch/yamaha
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Re: Fork preload adjusters

PostAuthor: jonno51 » Tue Jun 05, 2018 2:59 pm

donthedec wrote:Yours forks must be bigger than mine because mine are Definitely 31 mm maybe usa are different..
I'm going to get in touch with yamaha uk


Mine is a Japan home market grey import to the UK. AFAIK all the later 750/1100s had 38mm OD forms. If the ID is 31mm then I've wasted my money.
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Re: Fork preload adjusters

PostAuthor: jonno51 » Tue Jun 05, 2018 3:02 pm

donthedec wrote:Hi I have a 1996 uk yamaha xv1100 virago.
And I have had my top screw in cap measured by an engineering place.
As I need a new one and can't find a oem replacement..
The measurement of mine are 31mm with a 1 mm pitch...
they told me Japanese threads are different..
That's why I was asking about the Chinese
Preload adjusters..
And if anyone has used them..!
Regards
Don


Still available from Fowler's in Bristol but they are £100 each.....
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Re: Fork preload adjusters

PostAuthor: Brodie » Mon Jul 09, 2018 2:20 am

Any updates on this?
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Re: Fork preload adjusters

PostAuthor: jonno51 » Tue Jul 10, 2018 10:16 am

Brodie wrote:Any updates on this?



Should have something for you at the weekend. Now soaking the existing caps in penetrating oil, they are well stuck in.

I made a removal tool by welding a nut onto a bolt with a 17mm hex head, but no movement yet.

People like the POs who obviously never did any maintenance should be killed, buried, dug up and killed again.
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Re: Fork preload adjusters

PostAuthor: faffi » Tue Jul 10, 2018 3:56 pm

jonno51 wrote:


People like the POs who obviously never did any maintenance should be killed, buried, dug up and killed again.



I know how you feel, but that's a very funny way to put it :bg: :bg: :bg:
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Re: Fork preload adjusters

PostAuthor: jonno51 » Wed Jul 18, 2018 9:14 am

Finally got the fork caps off, to find that the SRX items are too big. 31mm is the ID of a 38mm Virago fork.
The SRX items measure at 33.7mm on the digital calipers.

And the fork springs are tired too, 506mm and 510mm respectively v spec of 513mm, so they need replacing. I suppose I could just put bigger spacers in, what do you think Faffi?
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Re: Fork preload adjusters

PostAuthor: Hellgate » Wed Jul 18, 2018 11:14 am

You need to set up static sag before you begin randomly adding spacers.

Here's some reading:

https://www.sportrider.com/ask-geek-set-your-static-sag

http://racetech.com/articles/SuspensionAndSprings.htm
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Re: Fork preload adjusters

PostAuthor: jonno51 » Wed Jul 18, 2018 2:17 pm

Hellgate wrote:You need to set up static sag before you begin randomly adding spacers.

Here's some reading:

https://www.sportrider.com/ask-geek-set-your-static-sag

http://racetech.com/articles/SuspensionAndSprings.htm


I take your point but I was only going to replace the spacers with others 3mm and 7mm larger respectively to compensate for the tired springs.

However I've now decided to have some springs made with a 0.85kg per mm spring rate which relates to my weight (78kg plus gear), rather than the "one spring rate (doesn't) fit all weights from 10 stone to 25 stone" that OEM represents. I used one of the spring rate calculators on the net to arrive at the 0.85 figure.
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Re: Fork preload adjusters

PostAuthor: faffi » Wed Jul 18, 2018 4:19 pm

Pity they didn't match your stanchions. Adding spacers will help, but as mentioned you need to measure static sag as is first. You can then add or subtract oil in order to raise or reduce the spring rate and its progression rate.
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