Using my time wisely , I currently have the clutch from my 1098R apart for cleaning and re greasing, according to the oem parts list, the DP slipper clutch is identical to the one fitted to my 1198SP, I've no reason to suspect that either clutch has been changed since the bikes left the factory, the 1198SP had only 1400 miles and the 1098R 9k when they came into my possession. So my confusion is: the R slipper is fitted with 18 plates with the friction plates also being steel and the SP has 16 plates, as per the oem parts list for both models, with the friction plates being alloy. The R steel friction plates are 1.5mm thick (excluding friction material), with the SP's being 3mm, so i appreciate more plates are be needed to get the stack height correct but why the different type of plates? It also seems that the friction material is different as can be seen from the photo would anyone know what material is being used and the service limit thickness for the steel friction plates?? NB: Top friction plate in the photo is the steel one from the R.
The lower of the 2 is an organic friction material and the upper is sintered so correspondingly much thinner and therefore more plates in the “pack”. Sintered friction plates are usually the DP upgrade and standard on the 1098R but could have been used in the 1198, it being an SP. Andy
So to clear the confusion steel plates are generally the plain plate without any material in them These come in 1.5 and 2.0 thicknesses so you can alter the height of the stack The friction ones whatever make or type fitted are generally the same thickness when new obviously different materials and makes can alter The organic stuff is for a std clutch and the Sintered stuff for a slipper as it gets more grief The friction plates can also be alloy again ideally not for a slipper and should be matched to an alloy basket
Thanks for the helpful replies, much appreciated . Still don't understand why both bikes that are, supposedly, fitted with the same DP slipper clutch, ex factory, have different plate kits fitted though .
Not surprised. I have run both and for road riding, I couldn’t feel any difference. Track riding however, night and day, sintered friction plates don’t fade. Andy
When you are rebuilding give me a shout and ill point you in the right direction with set up and measuring the height correctly..
