1098 forks

[Dirty]

I think someone told me they are a bit longer than Monster forks, is that so?

It's just something I'm pondering on for the future, no firm plans yet. I want radial mounts and calipers and there seem to be a lot of 1098 forks available so they are an obvious choice.

[uksurfer]

I've got a pair on my bike, I'll measure tomorrow if I remember for you :mand:

[BigOz]

Just checked my spare pair, 720mm from to cap to axle centre when fully extended.

Andy

[slob]

As standard they'll be oversprung.
You'll need to modify your yokes and add shims.
Oz can give you the lowdown on those requirements

[Mr Gazza]

Dirty I am mystified as to why you would want to fit such antiquainted equipment to your bike.
However I have done a lot of research and can only find one picture of post Norman Conquest Monsters...I believe those depicted would be around the 1098 era...Maybe you could scale the length off the drawing.?

http://i58.tinypic.com/a1srux.jpg

[Mr Gazza]

To be honest Norman stuff is rubbish.
Maybe you should consider something from the Druids, as proven round the Stonehenge circuit and also the notorious Aveburgring.

https://occhiolungo.wordpress.com/2010/12/27/how-to-druid-fork-links/

[Dirty]

Just checked my spare pair, 720mm from to cap to axle centre when fully extended.

Andy

Excellent thanks

As standard they'll be oversprung.
You'll need to modify your yokes and add shims.
Oz can give you the lowdown on those requirements

Oh yeah there is a load of stuff to do and consider inc rotors, and wheels etc. It's not a straight swap. And it's part of a greater plan that will bin the oem yokes for custom cnc'd items. Which ever forks I went for eventually I'd probably get some appropriate cartridges installed before fitting them.

Dirty I am mystified as to why you would want to fit such antiquainted equipment to your bike.
However I have done a lot of research and can only find one picture of post Norman Conquest Monsters...I believe those depicted would be around the 1098 era...Maybe you could scale the length off the drawing.?


Brilliant :)

[utopia]

Aveburgring. :mand:

[BigOz]

The 1098 stock valves/cartridges are good but as Slob said they are over-sprung with 10N/mm springs, I had mine re-sprung to suit. With the 696 I use the 1098 axle with the L/H spacer from the 696 and the R/H spacer from the 1098 and 15mm offset 320mm brake disks.

Andy

[slob]

Aveburgring.

I guess the mead is working...

[slob]

The 1098 stock valves/cartridges are good but as Slob said they are over-sprung with 10N/mm springs, I had mine re-sprung to suit. With the 696 I use the 1098 axle with the L/H spacer from the 696 and the R/H spacer from the 1098 and 15mm offset 320mm brake disks.

Andy

aren't the yokes 50/54mm and the forks 53/53mm?

[Mr Gazza]

To be honest Norman stuff is rubbish.
Maybe you should consider something from the Druids, as proven round the Stonehenge circuit and also the notorious Aveburgring.

https://occhiolungo.wordpress.com/2010/12/27/how-to-druid-fork-links/

I may have been too quick to dismiss the Normans...I forgot about thier famous Castles..

http://www.brufnut.de/SS100/FORKS/forks.htm

[Dirty]

If all goes to plan I've scheduled a couple of hours to work on the bike tomorrow. I'll measure my oems whilst I'm there. I want to make sure a pair of 1098s won't poke up too far through the yokes. I suppose I could just get the hack saw out! :)

[utopia]

What bars are you having ?
If the forks stick through a lot, you could perhaps use it to your advantage and fit clip-ons above the yoke ??
...as long as there's enough clamping area for the bottom yoke.

[jonzi]

Buy the 1098 forks, then swap them with me for my 796 forks.

They will fit much better. Scouts honour.

[BigOz]

aren't the yokes 50/54mm and the forks 53/53mm?

Yes, I went down the custom yoke route that Dirty is considering by getting CNC Racing to make a set of their existing Monster items in 53mm/53mm for me.

Andy

[Dirty]

What bars are you having ?
If the forks stick through a lot, you could perhaps use it to your advantage and fit clip-ons above the yoke ??
...as long as there's enough clamping area for the bottom yoke.

I've been wondering about clip ons but I'm pretty sure I prefer both the look and feel of bars, but mainly I want to avoid having too much fork protruding through the yokes. It looks wrong to my eyes.

Buy the 1098 forks, then swap them with me for my 796 forks.

They will fit much better. Scouts honour.

I'd happily go with a set of 796 forks if I could find any. As I intend to change the internals anyway it makes no difference what the original bike was. I'm just after radials.

[DangerousD]

Anything can be made to fit with a bit of patience :biggrin:

[Saint aka ML]

Dirty they will be longer, 999 forks are longer, 996 forks are longer so 1098 will be longer.

Best swap would be 696/796/1100 as length would be correct. I am looking at that idea for the brakes as well.

[BigOz]

I'd happily go with a set of 796 forks if I could find any. As I intend to change the internals anyway it makes no difference what the original bike was. I'm just after radials.

696/796 forks may not be the best choice, they only have a cartridge (unadjustable) in one leg and a damper rod in the other, hence there aren't many aftermarket internal upgrades for them, 1100 forks would be good though.

Andy

[gary tompkins]

When I stuck 53mm 916 legs on my monster, I had 50mm top yoke bored to 53mm and shimmed lower one with split 0.5mm top hat shims. I'm guessing you could do the same for the 1098 forks? Corrected ride height by dropping through yokes, and jacking up rear to match. Stock springs needed swapping to 0.85kg/mm - supplied by racetech

https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-prn2/v/t1.0-9/601671_643435682348696_1599615918_n.jpg?oh=c082d28 8b88e731845693e4221b7a9e6&oe=556FEF7B&__gda__=1437842221_a287ceaa6e85552f1e14bc8e4521038 4

[Dirty]

696/796 forks may not be the best choice, they only have a cartridge (unadjustable) in one leg and a damper rod in the other, hence there aren't many aftermarket internal upgrades for them, 1100 forks would be good though.

Andy

Aha, excellent info Andy, thanks.

Jonzi you can keep your 796 forks :chuckle:

I'll keep an eye out for an 1100 set. I guess S4r would also do?

[Dukedesmo]

When I stuck 53mm 916 legs on my monster, I had 50mm top yoke bored to 53mm and shimmed lower one with split 0.5mm top hat shims. I'm guessing you could do the same for the 1098 forks?

Indeed, I did the same. I also have radial mounts fitted to them so have radial calipers.

If you want to avoid the shimming (more complex than boring) then get the Ohlins version as these are 56mm at the bottom and so you can bore both yokes.

I have 1198 Ohlins on my 916 and can confirm that they are the same length as other SBK (916 etc) forks, I believe they are longer than Monster forks but don't have any to compare against.

[Dirty]

I also have radial mounts fitted to them so have radial calipers.



Now that has peaked my interest! How, where, who, how much? :biggrin:

[Dukedesmo]

Now that has peaked my interest! How, where, who, how much? :biggrin:

I got them from Bike Torque Racing http://www.biketorqueracing.co.uk/ they are made by 'MotorQuality' http://www.motorquality.it who I understand are associated with (or even owned by?) Brembo.

IIRC cost around £400 and, according to the manual fit not only 916 series forks but also M900 and 900SS forks.

http://ducatiforum.co.uk/forum/data/photos/l/2/2186-1380829445-49a7396f5764d831d69a0c9df855d29a.jpg


N.B. don't be tempted by PVM radial mounts, I previously had them on these forks (when fitted to a 916) and whilst they looked very nice one of them snapped across the clamp bolt after just a couple of years. When I contacted PVM they weren't interested except to offer me a new set for £1200...

[Saint aka ML]

When I stuck 53mm 916 legs on my monster, I had 50mm top yoke bored to 53mm and shimmed lower one with split 0.5mm top hat shims. I'm guessing you could do the same for the 1098 forks? Corrected ride height by dropping through yokes, and jacking up rear to match. Stock springs needed swapping to 0.85kg/mm - supplied by racetech

https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-prn2/v/t1.0-9/601671_643435682348696_1599615918_n.jpg?oh=c082d28 8b88e731845693e4221b7a9e6&oe=556FEF7B&__gda__=1437842221_a287ceaa6e85552f1e14bc8e4521038 4

I have done the same but they are still sticking out a lot.

I guess if you go with clip-ons not such a big issue as you can mount them over top yoke and it looks cool. However if you want to keep monster bars it goes more complicated as adjusters also add height. I have my bars moved closer to rider and up so sitting position is like a HyperMotard bike not monster.

It has it's merits for narrow twisty lane handling :)

[Dukedesmo]

However if you want to keep monster bars it goes more complicated as adjusters also add height.

I fitted 30mm (extra) risers to get the bars to clear the adjusters but then got flat bars which sit around 30mm lower so the end result is about the same.

[Funkatronic]

dirty why not go the maxton internals route?
once you have spent money on 1098 forks, new springs, service and possibly new valves & new yokes (dont think I would trust a piddly 0.5mm shim on the bottom yoke and it would look odd clamped to a blingy 1098 fork)
you are well on the way to spending Maxton money and then some

if you want gold bling factor them get your oem forks skimmed and anodised

1098 fork is 717mm Total length uncompressed (

[Dukedesmo]

dont think I would trust a piddly 0.5mm shim on the bottom yoke and it would look odd clamped to a blingy 1098 fork


I wouldn't use a plain shim, I got some 0.5mm 'tophat' bushes made to the thickness of the yoke - perfect fit and the only visible part when fitted is the rim;

http://ducatiforum.co.uk/forum/data/photos/l/5/5511-1427652209-ad373ea67cacb3f9d50ebe1b33dd323e.jpg

http://ducatiforum.co.uk/forum/data/photos/l/5/5510-1427652059-ee82e1fed2fa94de4e8771ffb93e6d67.jpg

[Dirty]

dirty why not go the maxton internals route?
once you have spent money on 1098 forks, new springs, service and possibly new valves & new yokes (dont think I would trust a piddly 0.5mm shim on the bottom yoke and it would look odd clamped to a blingy 1098 fork)
you are well on the way to spending Maxton money and then some

if you want gold bling factor them get your oem forks skimmed and anodised

1098 fork is 717mm Total length uncompressed (

Because to be honest I'm shallow :) I'm not really interested in the forks, just the mounts. The only reason I was looking at 1098 is I want radial mounts and calipers because they look good. Fork performance is a secondary issue however whichever forks I eventually end up with will get the Maxton treatment. 796/696 now counted out. 1098/1198 too long. Looks like 1100 or S4R are the options unless I go the DukeDesmo route and get radial fork bottoms. They are nice and shiny :mand:

[jonzi]

I've been looking out on ebay for 1100s forks for a while.

Nothing ever seems to come up.

[utopia]

Because to be honest I'm shallow :) I'm not really interested in the forks, just the mounts. The only reason I was looking at 1098 is I want radial mounts and calipers because they look good. Fork performance is a secondary issue however whichever forks I eventually end up with will get the Maxton treatment. 796/696 now counted out. 1098/1198 too long. Looks like 1100 or S4R are the options unless I go the DukeDesmo route and get radial fork bottoms. They are nice and shiny :mand:

Well at least that's honest. ;)
I'm going the other way.
Maxton internals in my original (budget) Showas, keeping the silver anodised finish, don't care too much about radial mounted calipers and don't feel that the expense of changing justifies the benefit.
I must be deep then ? :look:
(too deep, my mother always used to say)
Mind you, those radial fork bottoms that Dukedesmo mentioned sound like a possible final step once I've spent everything else I can think of to make the bike work better.

I do remember noting some time ago that B&Q sell thin aluminium sheet for making flue connections for gas fires.
Its the perfect thickness for the shims in the bottom yoke.
Though solid bushes could be made. Its a tad tricky and probably wastes loads of material as scrap, but its feasible. Let me know if you need....
And really, the solid bushes could do with a slot in them.

[Dukedesmo]

And really, the solid bushes could do with a slot in them.

The picture of mine was taken when I first got them, I cut a slot in them before fitting. :thumbsup:

[Dirty]

I've been looking out on ebay for 1100s forks for a while.

Nothing ever seems to come up.

Looks like we could be bidding against each other when they do :on:

[slob]

Why bother if you're going to get maxton internals, just buy a set of radial bottoms.

search eBay for 'GSXR1000+Ohlins' and buy lighter springs

[Dirty]

Why bother if you're going to get maxton internals, just buy a set of radial bottoms.

search eBay for 'GSXR1000+Ohlins' and buy lighter springs

Because for not much more I can get a set of forks inc and I'll still have a bike to ride whilst they are off being worked on. That said the DukeDesmo option is an interesting one that, after some research, could deliver some nice radial bottoms that no one else has so it stays under consideration.

I thought about the GSXr option a while back but I think they are longer as well. If they aren't I'd consider that too.

[gary tompkins]

I wouldn't use a plain shim, I got some 0.5mm 'tophat' bushes made to the thickness of the yoke - perfect fit and the only visible part when fitted is the rim;

http://ducatiforum.co.uk/forum/data/photos/l/5/5511-1427652209-ad373ea67cacb3f9d50ebe1b33dd323e.jpg

http://ducatiforum.co.uk/forum/data/photos/l/5/5510-1427652059-ee82e1fed2fa94de4e8771ffb93e6d67.jpg

Exactly the same as the ones on mine

But mine were split in half to make them easier to fit, and ensure they clamp up fully on legs