In another thread i mentioned that my clutch was slipping at the top end...asked for some suggestions but got nothing back....i ordered some plates (and some springs which arent here yet) and replaced the clutch plates this afternoon (not the metal ones) - if i put the new ones in, ive got no clutch - if i put the old ones back in ive got a clutch. Stack height on the old set is: 36.93 new set is: 37.60mm tbh when i started this i kinda knew id have this problem but didnt know why...suggestions? Edit - its a slipper clutch also. Im just reading that the 1098r is 36.5mm - not sure if thats relevant to mine though...thats all ive found so far...
Can you not just try one new Steel plate. If it's just a slip, surely a little more height is all it needed. I wouldn't change the lot.
Have just found this on here... https://www.ducatiforum.co.uk/threads/evr-48t-slipper-clutch-question.52748/ So that ties in with my setup - just wondered if the EVR setup (you can see the plate arrangement) would be same for mine....mine looks exactly like the STM one...
Ive always (when servicing the clutch) always just taken the plates out in order and then back so...from those pics not sure what a sintered and a concave plate? - i was also reading another post on ms where someone mentioned that if the plates werent installed correctly then it would grab....which mine does...
Not sure what type of clutch you have but gather it may be “like” an STM 48T slipper? If that’s the case, see below possibly helpful info: Stack height 36.5mm
Many thanks....first question...all my metal plates look the same...how can i tell the difference? Edit: is it the thickness that differentiates them??
Oh - one more question...so i ordered a standard set of clutch plates for an 1100 which gave me the larger stack height...are these usuable at any point or no?
I can’t say as there’s too many unknowns. Does the 1100 Hyper have a slipper as standard? Are your plates genuine Ducati? Do you have an aftermarket slipper? If so, what? Is it 48T? Etc. Do you have a workshop manual? That would help.
You have 2mm and 1.5 mm steel plates. with a slipper clutch the stack height fitted is really important for correct operation of the slipper that’s why there are two sizes so you can measure and change. Tge order of the plates is also critical and different to a std clutch. tge simplest way to get the stack height correct is on the bike. Assuming your outer drum is in and you have assembled the centre hub and fitted it. Fit the plates alternatively starting with a sintered keep going until you get towards the outer edge of the inner drum Hold the plates in with one hand and measure down to the last plate this needs to be 5-5.5 mm.. you achieve this by swapping 1.5 for 2 steels.. get this correct and away you go. When it wears you can just swap out another 1.5 for a 2 you 5-5.5 is back correct and off you go Simples!
I agree with the way you suggest to measure the 5 to 5.5mm gap however, if it's a slipper I believe that a friction/sintered plate goes in first.
My bad been a while…. Of course as if you put the steel in first and the slipper works it drops down behind the hub
Its all back together at the moment - ill be back in the garage tomorrow night...not sure i understand your explanation...main reason is when the original clutch is back in when all the plates are back in and no pressure plate im pretty sure theres not 5mm at the top? (but i am going from memory) ill try to itemize!! 1. Ive not taken a measurement of my steel plates...ill do that tomorrow night (so i need to buy a pack of the "other size") - so i can mix and match to get the exact stack height? 2. Assuming the above can use the plates that i just bought (as in not the steel plates) 3. Ever since ive had it my clutch has always been grabby. (Pulling away is an art form!) - assuming what ive read tonight am i right in saying that slipping or not - mines set up wrong... I had a another question but in one ear and out the other...im sure itll come back to me...
With a new friction set you can use all 1.5… As they wear down you gradually replace with a 2mm each time there is a bit of wear and it doesn’t feel like it’s performing correct. regular checking and maintainance is the key
