Fitting a sigma Slipper Clutch

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Superdan
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Fitting a sigma Slipper Clutch

Postby Superdan » Fri Mar 19, 2010 12:24 pm

Right turns out had the wrong GSXR springs just received the correct ones from Sigma today and hey presto, thanks to BigAsh and Ducati Pete for some tips along the way.

Here is a little how to if you fancy doing the same, should be equivilent on the STM slipper also but apparantly that needs more setting up.

The kit:

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The amount of slip or engine barking you get is decided by the final metal KTM plate being changed for a GSXR one I tried the middle of the road 2.3mm I also have a 2.5mm so hopefully have equal engine brake to slip (I do like engine braking so may well change to the widest gixxer plate).

Place bike on side stand so when you take off clutch the oil does not all come out and remove clutch cover, should look like this:

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Then remove the 6 bolts and buckets and keep them safe you dont need them anymore, pull off the clutch hub and remove the plates (you can leave em in and take em off when you remove the 32mm nut), there are two small plates which I did not initially see as they were stuck to the clutch dont forget about those, and remember LOCTITE all the bolts!

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Thanks to BigAsh for this tip, buy an Impact wrench this runs off a 12v car battery awesome for the price http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... 0523629042 (also excellent for doing front sprocket nut)

Whack it in 3rd gear or higher and bosh the 32mm nut comes off:

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The clutch centre then comes out you need to replace with the sigma one and stick the bolt back on and torque it up (think was 120NM of top of head):

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Then place the clutch plates back on in this order from looking at your clutch parts on the "engine spares" in your manual. You need to start with a No.8, then a No.7 steel disk, then 12, then 11 then the No.10 disk then rest of pack leaving the last KTM plate out and replacing with a Gixxer steel one (thicker), dont forget to lock the last plate into the clutch housing.

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Finally remove the spacer from the inside of the clutch cover with the one bolt.

Jobs a good'un will let you know what its like in due course!

Image

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Twisted Jester
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Postby Twisted Jester » Fri Mar 19, 2010 12:29 pm

Nice one, glad you got it sorted in the end.
Longest ride on one wheel, 8 miles....

....if only I could do it on my SD.

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Postby Superdan » Fri Mar 19, 2010 12:34 pm

Yeah in the end :lol:

Dont think the previous owner of said clutch had removed the spacer from the inside of the clutch cover hence the marks on the red buckets. :roll: Does not detract from its operational ability tho.

Bloody lovely day too wish I could go out and play, will do my oil change instead. Not quite as fun :P

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Postby BASH69 » Fri Mar 19, 2010 6:45 pm

Nice 1 dood - certainly was a luveleeeeeee day 2day, same here tho , didnt get out on the bike :cry:

The STM is quite abit diffrent TBH mate, it uses 2 large round springs rather than the 6 GSXR 1s which the sigma uses, if you eva get bored have a look at an STM diagram, its ermmmm, confusing :lol:
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Re: Fitting a sigma Slipper Clutch

Postby Viking » Wed Feb 22, 2012 4:09 pm

Just fitted mine. All pretty straightforward.

Few things to add to this. When you take the old basket off there is a thick spacer/washer with a few small holes drilled in it, located at the back of the spline. You leave that on.

New basket goes on. New black tapered washer on, then big nut threadlocked and torqued up. Refit all clutch plates. Remember after the 1st one that goes on there is a big chamfered ring. Should all be in the workshop manual.

Measured the standard last plate and mine was the same size as the middle recommended GSXR one. Measured the clearance as per instructions and its set at 1.2mm. Instructions say anywhere between 1mm to 1.5mm is ok.

Clutch is biting ok and going into gears up and down driveway. Will give it a run as soon as the weather clears up. Might have to play with that 1.2mm figure to fine tune it. Just off the top of my head, 1mm will be tighter, 1.5mm will allow it to slip more. Is that right? So going up to a 2.9 plate will make it slip less??? :?:

Was pleasantly surprised when I took the plates out. I do like a wheelie or 5. But the plates were all nice and clean with hardly any wear. No blueing or marks on the steels either.
Last edited by Viking on Sun Apr 22, 2012 11:06 am, edited 1 time in total.
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Re: Fitting a sigma Slipper Clutch

Postby Superdan » Wed Feb 22, 2012 5:38 pm

Good job dude :wink:

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Re: Fitting a sigma Slipper Clutch

Postby Viking » Wed Feb 22, 2012 5:53 pm

Cheers for the info. Big help.

It's a bit misleading with the instructions saying not to use any standard washers. I built it up and it was on he biting point with the lever fully in at the bar. Had a look at it and fitted that washer and it all worked ok.

I've never rode a bike with a slipper. Really looking forward to it. Might have to calm down my auto blip right wrist. :lol:
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Re: Fitting a sigma Slipper Clutch

Postby Superdan » Wed Feb 22, 2012 5:55 pm

Yeah took me a while to forget to blip.

Agree instructions were crap that you get, just thank yourself you never had to speak to Neil Spalding who runs Sigma (tech guy from motogp on Eurosport) what a cock he is :roll:

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Re: Fitting a sigma Slipper Clutch

Postby Ducati Pete » Sun Feb 26, 2012 6:17 pm

Viking, the thicker the final plate the less slip you will get.
chech your futidge
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Re: Fitting a sigma Slipper Clutch

Postby Viking » Sun Feb 26, 2012 6:26 pm

Cheers dude. I'd looked into it over the last few days. Thicker pack + less slip.

With the marks on the spring collars............... I spoke to a mate with an R1 who said Sigmas are bad for winding out the posts those allen bolts thread into.

This might be whats happened to mine and Dan in the past to cause the marks???

I took off the disk from the inside of the casing. No idea what thats for? Maybe some kinda vibration damper or something?
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Re: Fitting a sigma Slipper Clutch

Postby Vortex155 » Thu Apr 12, 2012 6:16 pm

Very usefull topic this one, hope it helps gettin 'round fitting the sigma upon my rc8, so thx
good hint bout that impact wrench tool also.
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Re: Fitting a sigma Slipper Clutch

Postby Linga » Thu Apr 12, 2012 7:00 pm

Viking wrote:Cheers dude. I'd looked into it over the last few days. Thicker pack + less slip.

With the marks on the spring collars............... I spoke to a mate with an R1 who said Sigmas are bad for winding out the posts those allen bolts thread into.

This might be whats happened to mine and Dan in the past to cause the marks???

I took off the disk from the inside of the casing. No idea what thats for? Maybe some kinda vibration damper or something?

Are you getting any vibration after removing the damper on the inside of the clutch case?
I left mine in but would remove it if it is not necessary...

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Re: Fitting a sigma Slipper Clutch

Postby Superdan » Thu Apr 12, 2012 7:15 pm

:shock: Should be removed as per instructions for sigma, will wear the bolts away. Not sure if its a damper as such (not quite sure) just thought it was there to keep push rod from pushing out too far.

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Re: Fitting a sigma Slipper Clutch

Postby Viking » Thu Apr 12, 2012 7:20 pm

No mate it's all cool.

I'm increasing the gap on the pack from 1.2 to 1.5 for a little bit more slip though.
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Re: Fitting a sigma Slipper Clutch

Postby Razy » Thu Apr 12, 2012 7:45 pm

I really need to get mine fitted. It's been sitting in the box for bloody ages.

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Re: Fitting a sigma Slipper Clutch

Postby SDNerd » Thu Apr 12, 2012 7:46 pm

Image

:lol: :lol:

That's my hero right there - yeah, I'm pretty sure 'ol Rubén (running Bimota's team now - ?) wasn't running a slipper on that motojourno day; certainly weren't on the 'stradas then ...

So, now that you've been running the Sigma (TSS) slipper a little while, where are your WWRD (What Would Rubén Do) pics? 8)

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Re: Fitting a sigma Slipper Clutch

Postby Linga » Thu Apr 12, 2012 8:08 pm

I fitted an STM and it cleared without removing the damper so I left it in.
I might pull the case and have a look after it had a good run.

Old Ruben is awesome, my mate even named his kid after him :)

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Re: Fitting a sigma Slipper Clutch

Postby Viking » Thu Apr 12, 2012 8:19 pm

It doesn't hit Linga. Clearance is ok.

The main threaded posts that the allen bolts screw into are supposed to be threadlocked. If not they can unwind a little bit and cause the collars to skim that disc/weight thing. Throw that disc away, It's extra weight anyway......gerrit oooouuuuttttt!
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Re: Fitting a sigma Slipper Clutch

Postby Vortex155 » Thu Apr 19, 2012 6:28 pm

At which plate did you place the judder springs or did you left them out?
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Re: Fitting a sigma Slipper Clutch

Postby Viking » Thu Apr 19, 2012 6:33 pm

The Sigma doesn't have judder springs. Only springs it has are the 6x GSXR ones on the face plate.

I think it's the Suter that runs the more complex set up. :?
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Re: Fitting a sigma Slipper Clutch

Postby Ducati Pete » Sat Apr 21, 2012 12:16 am

SDNerd wrote:
So, now that you've been running the Sigma (TSS) slipper a little while, where are your WWRD (What Would Rubén Do) pics? 8)


The slipper should prevent sideways action, that's the whole bloody point of a slipper clutch!
chech your futidge
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Re: Fitting a sigma Slipper Clutch

Postby Vortex155 » Sat May 12, 2012 10:54 am

Hello I have serious problems with the installing of a TSS slipper clutch I bought recent for my RC8.

The slipper clutch is to tight to fit upon the clutch axis, is this normal.
With normal manpower without using hamers or bars, it just won't fit into place.
As I was pushing that TSS upon the axis i even managed to lift my bike, removing afterwards was also very stressy..it just won't let go.
So had to fabricate a special tool that fits the m6 holes to take it back off the clutch axis.
This bout the best position it grabs, so the washer still have to be in place and the center bolt can never be bolted upon that axis.
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I managed to free it off the axis without damage and decided to let it go for a while.
So my question...is it normal that it doesn't fit 100%????

The oem clutch is a perfect fit and installing/removing doesn't give any issues.
So not normal imo?
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Re: Fitting a sigma Slipper Clutch

Postby Vortex155 » Sat May 12, 2012 10:55 am

Image

TSS slipper clutch KTM RC8

not fitting at all...
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Re: Fitting a sigma Slipper Clutch

Postby Linga » Sat May 12, 2012 12:02 pm

It should slide on easy mate... You shouldn't have to bash it.
What does it look like with just the basket and what does the back of the slipper look like ?

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Re: Fitting a sigma Slipper Clutch

Postby drswade » Sat May 12, 2012 1:27 pm

I don't know how they say that the Sigma is not the same as the Yoyodyne. They look exact to me.

I saw no mention in this thread of thin judder/Bellville spring at the back of the clutch.On the Yoyo they tell you to put it, as well as the plate with the larger I.D a few plates in instead of the standard clutch's way of putting them in first.
This keeps them from slipping under the clutch hub when it open up under slipping operation.
Did I miss this somewhere?
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