Author Engine vibration at higher revs  (Read 996 times)

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  • Offline Bertiebot   gb

    • XR Member  ‐    36
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    Offline Bertiebot

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    • Bertie
    • Bike: S1000XR & S!000R
    • Town: Derby
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    Engine vibration at higher revs
    on: July 14, 2021, 08:55:09 pm
    July 14, 2021, 08:55:09 pm
    Hi all

    I have a 2016 bike with 18k miles on it. I rode it today and I might be imagining it but it felt extra vibey above 5k revs, certainly compared to when I last rode it. I tried dipping the clutch and it happens with engine speed, not road speed. It had the valves checked by BMW fairly recently and has only done maybe 200 miles since that service. Any thoughts on what it might be?

    Ta
    Lovely bikes those XRs

  • Online Antares   gb

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    Online Antares

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    Re: Engine vibration at higher revs
    Reply #1 on: July 14, 2021, 11:06:12 pm
    July 14, 2021, 11:06:12 pm
    *Originally Posted by Bertiebot [+]
    Hi all

    I have a 2016 bike with 18k miles on it. I rode it today and I might be imagining it but it felt extra vibey above 5k revs, certainly compared to when I last rode it. I tried dipping the clutch and it happens with engine speed, not road speed. It had the valves checked by BMW fairly recently and has only done maybe 200 miles since that service. Any thoughts on what it might be?

    Ta

    Just general XR vibes, feels worse on some days better on others, there is a resonance spot around 6.5k and 3.2k. It goes with revs but the source of the vibes is the exhaust being hard mounted to the engine and the engine often being over torqued to the frame. Re-torqueing everything might help a bit.

  • Offline Bertiebot   gb

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    Offline Bertiebot

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    • Bertie
    • Bike: S1000XR & S!000R
    • Town: Derby
    • Country: gb
    Re: Engine vibration at higher revs
    Reply #2 on: July 17, 2021, 10:53:41 am
    July 17, 2021, 10:53:41 am
    Good shout. I think I was riding like a pussy and sitting in the rev range where you feel it. I went for a better blast yesterday and it was fine.
    Lovely bikes those XRs

     



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