My 848 Corse SE is way too vibey!

Discussion in '848 / 1098 / 1198' started by redsail, Aug 1, 2013.

  1. Had a long run out today on the bike, first long run since the 1st service and have been letting rip a bit more.

    From the first time I rode the bike I noticed it was a bit more vibey than my old 848 Evo which never really vibrated the bars at all, its was very smooth (for a twin). I thought the Course would settle down and smooth out past 6k rpm and a few hundred miles but no. The bike vibrates like a jack hammer, even more so up the rev range. On the run today it was fatiguing but most disapointingly the vibes had the effect of dissasociating me from the bike and dampening out all the subtle tactile cues that made the experience of riding my old 848 Evo such brilliant fun round the twisties.

    So what to do? I'll mention it to the dealer when I go and pick up my seat, but as its not really an obvious fault I'm not sure what they would do. My hands and arms are buzzing as I type.:frown:
     
  2. wheel alignment?
     
  3. Possibly and worth checking, but I think it's more likely the engine. The sound and vibes match and they subsite when you let off the gas. If it was wheel alignment wouldn't it be purely road speed related?

    How vibey is yours ET and was it more so at the start? The 848 Evo I had was at 1500miles and it was smooth. My Corse in now on 900 miles.
     
  4. At first it was very vibey but I think I was trying to ride it like my JIL4's. Since the first few weeks I think I've learnt how to ride it and how to use the power rather than "it righted itself". So in short I find it quite smooth now.
     
  5. Need to find out some technical info on what makes an engine more vibration prone than another (of the same type) and what can be done (ecu?).

    Yeah I found the 848 evo more 'characterful' than my Suzuki (also a twin incidentally) and il4s to be almost blandly smooth. It was never a problem, I preferred it actually. This is just annoying though.
     
  6. I find that wringing its neck works wonders :upyeah:
     
  7. Found lots of info but its beyond me technically, not that I can do anything about it anyway. Shall see what Riders think. On the bright side the gearbox is bedding in nicely, only one false neutral and that was my fault for being too gentle. Its finding the Neutral light more readily now too :)
     
  8. I have had my Evo Corse for just over a year. It was my first Ducati and first twin. After about six months ownership I had an occasional Lamda. sensor fault on the dash and then a a couple of months ago it started to develop an occasional issue holding ist tick-over and stalling.

    Whenever I rode it the power was fine but experienced the "normal" vibes when accelerating from slower speed that I expected from the bike. Things started to get worse so I booked it into Snells last month. It had it annual service and they changed the ECU under warrantee.

    When I picked it up it's like a different bike. Engine much smoother, vibes almost gone completely. No quicker but just crisp and smooth. I just did not realise how bad it was before

    i guess the point of this long post is to say get it looked at. If its worse than your previous bike there could be an issue.

    My only worry is had the ECU gone after the warrantee ran out a new one is £1100!!!

    all the best

    Buckers
     
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  9. Mine smoothed out quite noticeably after about 2000 miles. I'm now at 4300 and it's a lovely engine, loads smoother than it was at sub 1500 miles.
     
  10. Run it in before making any judgements. Any new engine will feel different to one with a few miles on it.
     
  11. I would also check everything is tight.

    My bike developed a bad vibe whilst touring once, so bad at some revs it vibrated my teeth. It turned out to the be bolts clamping the Termi's to the subframe had worked loose and the cans resonated against the mount. Simple tighten and problem gone.

    Being a twin checking things are tight is almost mandatory on a frequent basis if not loctited.
     
  12. Thanks for the info. Any idea if they did anything else to the bike to fix the vibes? If it was just the ECU then its good to know its fixable with a straight swap. I worry if its something mechanical that it would be difficult to diagnose and fix.

    I've only had twins (or singles) so I'm used to vibes. Its not a simple case of harmonic vibration because it doesn't comes and go at certain revs. My vstrom goes off like a bell giving a zing through the bars at almost exactly 4800rpm and its gone before 5000. The Corse's vibration is strong and persistant right trough the revs, that's why I haven't bothered thinking about fastners or bar end weights as a fix. There is the usualy shudder down low that I expect on these bikes and ride accordingly.

    The bike is on 900 miles and just had a bolt check at the 1st service. Will take it back there to see what they say. Can't stick the numb hands.
     
  13. Wow......................I've never had it like that.
     
  14. Some heavy (Steel not ali) bar ends will help with the numb hands.
     
  15. Treating the symptom rather than cause?
     
  16. Looser grip, bar end weights, and ride faster so you dont notice it
     
  17. I realise that, though it may help, these things are viby at the best of times.
    I certainly found a set of heavy bar ends helped with my 1098.
     
  18. Not being funny, but c'mon its a v twin they are all vibey!! Go back to an IL 4 if you dont want it...or try a single, now THAT is vibey!
     
  19. IIUC Bar end weights would help with sympathetic vibration by lowering the frequency out of the resonant band. But in this case I don't think its an excited resonance in the bars its the engine itself. If it was resonance it would happen at specific rev point and tail off either side and bar ends may indeed help.

    I know what another 848 feels like so I have a direct comparison. Most importantly is I'm not enjoying riding as much as before because I feel disconnected from the bike. There's vibey and then there's a hammer drill into masonry.:eek:

    What I really wanted to know is what things in the engine can cause excessive vibration? Flywheel? Timing? Belts? Fueling? At least so I can ask questions about what has been checked at the dealers.
     
  20. An internet forum isn't the place to get an answer. No one can see it and you have no idea who knows what. Head to the dealer, ask the question and have a chat. Another reason to use a local dealer and build a relationship; one that means you can pop into the service garage and ask directly of those who do the work rather than front of house tits and teeth brigade
     
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