I have and am having slipping probs... First proper run it started after about 5 miles... maybe it would have happened sooner but that was when i wound the gas on a bit and noticed. I limped home and found oil on the plates. After a search on here i found a post saying that an after market crank case breather was the cause of something similar and as I was using one (and dont have the tools to completely strip the clutch) i thought i'd start there. So i removed plates and cleaned fully re installed and changed breather. Still slipping done 10 miles and nursed her home. This time no sign of oil at all!? So im wondering if anyone has done this swap and encountered probs? I have a vague recollection of the day we installed the clutch and i think the 1098 clutch center was slightly different (possibly in its depth?) so we used a 748 one. Could this be the prob!!!??? just removed the plates again an measured i have 10 steels, the first 2 being 2mm the next 7 being 1.5 and the last being 2mm i have 8 fibers giving me a total of 40mm (ish as only held by hand). The amount and thickness differ from the 748/916 manual.. Any thoughts/pearls of wisdom/offers to come over and fix greatly appreciated!!!!!
if you compare part number of a 998 748 1098 999 clutch there are a large amount of shared parts......thats ducati! I would say the problem is in your build up of the clutch or the serviceability of the part your using......
The usual cause of oil on the plates is failure of either or both of the seals in the clutch area. There's a small one that seals around the pushrod or a large seal behind the basket.
~I would say you are right.. There are a lot of shared parts and i thought it would be a straight swap but as i said i have a vague recall of using the 748 center for some reason, Not sure what you mean by the serviceability of the part... would you know if the center (bit that the spring retaining screws go into) would be a different height between 748/1098? its all i can think that would make the diff?
196.1.001.2b clutch drum for 1098 its the same for the 999 and found this 748 vs. 1098 dry clutch drum - the same? - Ducati.ms - The Ultimate Ducati Forum
cheers. They look the same height dont they. looking at those pics now reminds me that the 1098 drum didnt have the locating hole for the ...errr... number 33 in this pic. again from memory. i recall there was a reason we mis matched a part but i thought nothing of it at the time
Not sure if the helps, but, I recently fitted a 1098 clutch plate to my 749 .... Clutch slipped like mad. The spring seats in the 1098 clutch plate are approx 12mm "lower" than the standard 749 plate, if that makes sense. Basically means that the springs are not as compressed as they should be, which allows the clutch to slip. I either need longer springs, or, some spacers in the bottom of the spring seats, to ensure the springs are properly compressed.
Sounds like that will help him tremendously - but he's busy taking the piss out of me on another thread - he'll be along soon !
hmmm... that makes sense.. dont know if thats the prob as im sure apart from the spacer? (num 33 in pic) all parts were my 1098 clutch, like a fool when my mate said "do you want to take the old bits with you" i said skip em... doh
are you talking the pressure plate? (sorry just re read) ive the oberon one that is supposed to be the same for all duc with a dry clutch... also have their stainless springs and caps
Yep mean pressure plate. I thought they were all the same, but, I've now been told the 1098 uses longer clutch springs. If I sit the standard pressure plate on a flat surface, then the face that presses against the clutch plates is flat on the surface. If I put the 1098 pressure plate on a flat surface, it sits on the spring seats, with the face that presses against the clutch about 12mm in the air. This means that the 6 springs are not compressed enough, and allows the clutch to slip. As such, I need to increase the compression on the springs by using longer ones, or, use spacers in the bottom of the holes were the springs sit. Seems not all clutches are the same.
Im hearing you bud... i do have the old pp i think... so apart from compering the two, if i install it and find alls well! I'll let you buy me a drink!!! obviously if you are wrong you owe me a drink... sounds good will keep you posted
No problem, just holding the 2 pressure plates side by side should be enough to tell you if there is a problem. Compare the face that presses against the clutch plates and the bottom of the spring seat. If there is a difference between the 2, then you may find that the springs do not have enough compression on them. Also, check the spring caps, again these can affect the compression on the springs. A couple of mm difference, all should be ok. 5mm or more difference in pressure plate or spring caps, could be the problem.
Yeah theres a few differences I've got a 1098 one in bits (drum & PP) let me know if you need any measurements
