Clutch has been slipping a bit (and getting worse) so tonight I thought I'd take a look as it's not the most difficult job ever.. Friction plates were well within limits (generally 3.2 but one was 2.92) - where it got weird though was about 4 friction pads in (metal / pad/ metal etc) there was a narrow friction pad, a small metal spacer that fitted inside the middle of it and instead of a full size curved plate there was a narrow dished plate that fitted inside the friction pad, then three more plate / pads before a 3mm steel plate at the back... I was expecting two back plates, friction pad, dished metal plate, then alternating friction / plate ending in a metal plate before the pressure plate. I've only seen two 900 dry clutches before (from my SS) and neither setup was like that ... Re assembled it with back plate, friction pad, metal plate then the narrow pad / dish thing / metal plate etc - no slip when I'd finished but still not sure about it... I have a full set of plates lying around so I could replace all the plates including that weird dish thing... Thoughts ??or is what I found normal on a 99 monster?
don't know the answer to your main question for certain but pretty sure it's aftermarket, and if the same as my Multistrada then a real precision item. A picture would confirm, I didn't take any of mine.
Yeah - I thought "I should take photos of this" but my phone was in the house... Now I've thought about what was going on - the best way to describe it is one friction plate had a larger inner radius (so the hole in the middle was bigger) in the hole in the middle sat the metal ring and on top of that sat the dished ring so the metal ring and the dished ring will have pressed against the metal plates either side of the "unique" friction plate. I'm pretty sure it's going to start slipping again so next time I'll grab photos.
It's a vented cover but it's steel (not that the material will make a difference) It's got an oberon pressure plate - I replaced that with a stock plate yesterday and tried it out before pulling the clutch apart - stock plate / springs / caps / bolts made no difference - it still slipped.
I fitted an open carbon clutch cover on my then S4rs After a heavy downpour whilst it was parked outside rain water got in and soaked the clutch plates The subsequent result was a slipping clutch until it had throughly warmed up and dried out. I refitted the original after that, and never left it out in the rain!
Wow I thought you were going to go with "clean the dust of the friction plates etc" - I've never heard of that - I guess organic friction pads rather that sintered? Mine lives in a centrally heated carpeted garage and while it has heard about this rain stuff it does not go out in it. That's my mountain bikes job...
photos ! Bought a new set of plates / friction pads and replaced the entire pack.. Here is the old one so we have (top left) thick back plate, friction plate, plain plate, (bottom left) slim plate and weird dish thing,"slimmer" friction plate, plain plate After this point it's as normal - a friction plate and plain plate alternating This is the slim plate / dish fitting inside the slim friction plate and finally side on the slim plate and the dish plate
I still have one set of above on a Multi - works well and beautifully made. not sure what the thinking was to introduce this variation, but probably/almost certainly another method to try and help reduce flutter during engagement.
It didn't generally slip from a stand still - only when you gave it a big handfull after a gear change. Which was pretty much every time I changed gear...
You can fix that with a fettle? not sure how much you love the dry clutch, I could fiddle and fix them all day. Looks a bit oily for starters, anyway, N/A as you have a nice new set.
Never seen those thin plates, can't see why they would fit them? Personally I don't bother with any dished plates, just friction/flat plain to get the correct stack height. By using a combination of 2mm and 1.5mm plains I can get the height correct and I've never had any problem with slippage or smooth engagement.
Glad to hear this, i'm guessing that your reply is bike-specific. Dished plates, even on a brand-spanking-new clutch can help immensely on some bikes, no doubt of this, but only me talking of course.
Thought that was worth a look as I have no intention of chucking it out - always good to have a backup.. Nope, not oily, the friction plates have quite a bit of dust on them - so maybe a damm good clean but some of the plain plates have some pretty bad scoring, I suppose I can mix and match if I want, swap plates over etc etc
So - new pack fitted, no slip, but also so much drag I couldn't get neutral.. Replaced the two steel plates at the back with the one thicker plate from the original pack. Better Replaced the dished plate and one friction pad with the slimmer friction pad, slim plate and dish plate from the original No slip and it goes into neutral. Fettled.
I’m surprised that you guys are having slippage problems with the clutch. As you know the clutch pull can get a bit tiring on the left hand. I read somewhere that the problem can be alleviated by removing two of the pressure plate springs, so I tried it. It works, so well that it took myself and son to Luxembourg and back (800 miles), the last 200 were in absolute biblical rain. So much so that the oil temp gauge stopped working and my clutch is open to the elements, as you can see.
