Rear Chatter

Discussion in 'Ducati General Discussion' started by Cream_Revenge, Oct 3, 2016.

  1. Hey getting massive rear chatter under breaking. Thought it was going down the box to fast but seems to happen regardless. Sent me running off twice and locked up plenty.

    Is it me or the bike or just get a slipper clutch?

    Cheers
     
  2. 999? what gearing?
     
  3. It's you, but a slipper clutch will help :)
    Seriously though, you may be going down the box too quickly or dropping the clutch too much between down-shifts, or not blipping the throttle hard-enough or all three. Do you have any video (pref with sound)?
     
  4. Are you relying on the rear to slow you down, shutting the throttle dropping gears and dumping the clutch it will hop about, are you braking as hard as you dare, it is tricky to coordinate motor & road speed
     
  5. Imodium helps stop that mate. Hope you're feeling better soon ;)
     
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  6. braking hard plus lazy downshifting and high torque equals rear moving and juddering

    either blip throttle better, buy a Sigma clutch or learn to back it in :)
     
  7. Is the damper ok I wonder?
    Or maybe the way you have the suspension set up?
     
  8. Hows ya rear shock? Due a service?
     
    • Agree Agree x 1
  9. Strewth.
    Rear shock is OEM crappie non ohlins. 7k mls, probably needs something better.
    Rear chatter got loads better when I stopped using as many gears and relying on the torque more.
    Still got it say 90deg corner, 10k rpm, hard on front break, not touching rear or only lightly and no gear change. Still went off track as back all over auction.
     
  10. Lifting the rear will do that. If front isnt taking its whole travel, it will start to lift the rear. And if sag is too low, it hyper-extends which makes it lift easier. Add v twin torque and...
     
    • Agree Agree x 1
  11. So, suspension setup and slipper.
    .
    Will I ever get it right with the BP 999 03 rear shock?
     
  12. Depends on your pace. Right enough not to sling you off mid corner :upyeah:
     
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  13. I guess the question now is how much money do I thrown at her before I'd just be betty buying a 1198s???

    Thing is wifey won't notice a slipper clutch or Maxton shock, she'd notice bike #4......
     
  14. Personally, I'd start with a mate and a tape measure to get the sag right and, worst case, spend £70 on the right spring and change it yourself. Then source a used slipper (not sure if any dry clutch Ducati fits a T9?). No need to spend 4 figures to get in the right range, unless gold is important...
     
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  15. I wouldn't think an 1198 would cure it.
    I assume this behaviour you mention is on a track? If so, have you thought of CaliforniaSuperbike School or a Haslam course at Donny?
     
  16. the amount of added torque on an 1198 would not help
     
    • Agree Agree x 1
  17. Ah, so I need an auto blipper, slipper, TC, ABS and all sorts of other expensive gubbins I don't understand to save me the effort of actual self improvement. Got it!

    Or maybe I'll set the sag and get some lessons.

    Was thinking about California SB school and Haslam in the spring but I only have a finite amount of £££.
     
    • Agree Agree x 1
  18. From what I can gather...
    You don't need any of that electrickery...
    I suggest some track tuition to help you improve your downchanging skill, that will help you match revs to speed and get rid of the chatter before you go spending on any rider aids.
     
    #19 RickyX, Oct 3, 2016
    Last edited: Oct 3, 2016
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