I agree with the above. What I can’t stop thinking is, could there be another underlying problem which is causing the springs to rub on and wear the hub??? Anyone any ideas, or is this wear and tear???
The way that the slipper works seems to rely on the springs being pushed back and forth, as the slipper part of the pressure plate moves on the ramps, by those posts across what the manual calls 'snap rings' yet the parts fiche calls 'thrust washers'. These are the oval rings that the bottom of the springs. I can see that this would force the spring against the post and give rise to wear like this. I can see from your photos that they are worn on both sides, the first two one way the last the other. I can just see the oval thrust washers mentioned above in your photos of the pressure plate. If those were missing or badly worn then I guess that they would make this contact worse and more damaging to the posts. I suppose the sheer amount of contact will depend on how much the slipper is used, both drive and reverse torque. An aggressive riding style probably increases contact and wear as well as how severe that contact is. A bit baffled that trying to bump my 1260 in the south of France, as Chris mentioned, usually just resulted in a locked wheel and a black line on the tarmac. No sign of the slipper clutch doing it's thing then...
Agreed, the manual and parts diagram are at odds with eachother with regards to the name for the small oval washers. I have just added the 3 washers to the parts order as one of them had some wear on it. Better be safe rather than sorry for the sake of a few quid. I don’t believe I have ever felt the presence of a slipper clutch on this bike whilst riding it. Strange but hopefully this all resolves the problem and I can get back to riding it, which is the main thing. Might see what can be done with the old drum after the new one is fitted and possibly keep it as backup, thanks
I know nothing about slipper clutches so anything I say will be totally useless and possibly dangerous, but lol, If that was a traditional clutch I would get a dremel on those posts, pop it back together and try it out.
Would be interesting to see any other cases of this or the state of high milage clutches. This clutch is fitted to quite a few Ducati models, not just the Multi, yet this is the first I've heard of the issue. My MV did similar from new, gave up with dealer doing anything about it. Sold after 2 1/2 years and 16,000 miles.
Thats very cheap for the complete clutch assembly although I’d be interested to know what made all the scratches on the outside of the basket.
Though you do have a good basket to make up a franken-clutch... Of course there maybe other issues related to that damage. Oddly enough there's another from Austria and a basket in the UK with the same damage. Have you checked your basket for the same @Twinlover? I do note witness marks, similar to yours, from the springs on the drum posts in a couple of the pics from the Austrian clutch...
I wonder what causes those marks the outside of the basket? They’re not rotational marks as they’re at 90 degrees to the rotation.
Good points both, makes sense. Would explain why they seem to appear on those examples on eBay. Probably not in every case so maybe explains why they don't appear on @Twinlover's basket.
Pretty sure that those clip into a groove in the drum to securely locate them. Along with the spring pressure.
I can’t believe every clutch basket is hand ground to remove casting marks. Surely those scratches are worse than any casting marks. Plus, wouldn’t they be less pronounced scratches in a straight line and more circular ground down metal looking? .
The oval washers fit between the outer surface of the pressure plate and the inner surface of the springs
Ok, marks was the wrong word, it's casting flash which is the 'bleed' you get in between the mold halves. If the part was on show it would be turned on a lathe to give a machined finish, as the basket isn't on show it's just been ground to get rid of the flash.
