1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

749 First Ride This Year :)

Discussion in '749 / 999' started by Andreas1986, Apr 24, 2020.

  1. Mine started making a funny whine when I reved it up at stand still, so I have put it back for now, is it normal to make a whine when reving it?
     
  2. What is normal is to hear a sort of musical jangling as you pull the lever.
    I suspect the whine is always there but you’re not hearing it above the racket from the clutch.
     
  3. oldrider, yes I get the jangling on both setups, you might be right the clutch is loud the standard way do maybe its masking the whine as you say, it doesnt happen at tickover but if Its in neutral and I rev it here was a definate nosie till about 2-3000 rpm then it stopped, might try it with the fibre plate tangs smoothed off as you mentioned
     
  4. Oldrider, the metal plates have a notch in them do they need to goin a certain way? i.e does that slot line up with something?
    Thanks
     
  5. If it does it in neutral with the lever out but not with the lever pulled in, I would guess it's the gearbox that you're hearing.
    Otherwise, it could be the cambelts.
    I very much doubt it could be related to the clutch plate order, other than allowing you to hear it.
    Another thing you can experiment with is removing an adjacent pair of plates, one friction and one plain. This will reduce the preload on the springs and give you a lighter lever. There is a risk of the clutch slipping as a result - if it does, just put them back but my clutch didn't slip even with two pairs removed for a seriously light lever.
     
  6. The notch is there to make it easier to hook them out. There's no need to line them up in any particular way but I have always alternated one at the top, one at the bottom, just in case it affected the balance.
     
  7. What do you mean by a notch? The friction plates have tabs that slide down the slots in the clutch basket, the plain metal plates have teeth on the inside that engage with the centre drum.
     
  8. Ahh, I see what is meant now
     
  9. Yep thats what I did as well, going to try again today, I put a friction plate first then standard metal/friction all the way to yhe pressure plate, I did have to use 2 metal plates last together which meant I left metal platd out but no slipping so should be good to go
     
  10. Just make sure the plate that contacts the pressure plate is a plain one.
    It doesn't matter having two plains or even two frictions together as they will turn together but the basic principle is to alternate.
     
  11. In my experience ‘noisy’ clutchs are due to excessive wear in the clutch specifically in the clutch basket. The friction plates slide up and down the slots in the clutch basket and as a consequence their edges wear away and they wear grooves into the sides of the clutch basket slots. The maximum space/gap between the edge of the clutch basket and the tab on the friction plate is 0.6mm anymore and it’s recommended to get new friction plates and/or clutch basket.

    The photos below show the clutch basket and old and new friction plates from my Monster. The clutch on my Monster was really really noisy, even when in gear. When I serviced the bike recently I discovered the wear on the basket & friction plate tabs (the plates were down to the minimum recommend thickness 2.6mm as well). The plain plates were still well within tolerance. I put in a new basket and new friction plates and now you would hardly now it’s a Ducati dry clutch it’s so quiet.

    In stating the above I’m not dismissing OR’s suggestion for quietening the clutch at all I’m just suggesting you should perhaps check the wear in your clutch pack as well.
    C294447A-2B16-45AF-BFE3-80799E112A5B.jpeg 70814A5F-C508-4BAC-9DD7-BDF75777E103.jpeg
     
  12. Of course but putting a friction plate in first not only prevents that wear with a new or not badly worn clutch, it also negates the existing wear in an already worn clutch, prevents further wear and it's free.
    Wear of the friction surfaces is relatively minimal. They have been known to do 30,000 miles plus with the quiet mod.
     
    • Like Like x 1
    • Useful Useful x 1
  13. Makes sense, I will check for wear but replacments parts are not cheap
     
    • Thanks Thanks x 1
  14. About €80 for a friction plate pack (newfren) and same for a basket. How many miles has it done? My Monster has 30000 km when I did the clutch and I suspect the basket at least, if not the plates were original.
     
  15. Hi I only have 6000 miles on the bike
     
  16. Where did you get a basket for that price?
     
  17. Yours should be absolutely fine then, I’d be really surprised if it were worn beyond tolerance.

    As to the basket, off eBay, Id have to go through my purchase history.
     
    • Like Like x 1
    • Agree Agree x 1
  18. Tried it again today, it sounds like its the clutch plate bearing in the middle for the push rod, definite noise, doesn't happen when I start it only when its ridden for about 5 miles or more, bit nervous leaving it that way
     
Do Not Sell My Personal Information