2009 1200 Custom XL Vibration

Discussion in 'Sportster Models' started by HDPUTTIN, Dec 24, 2010.

  1. HDPUTTIN

    HDPUTTIN New Member

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    A friend of mine just got a 2009 1200 custom XL (3000 miles) and it has excessive vibration at lower rpm in each gear when excellerating and smooths out as rpm increases. Yes Harley's vibrate, but this shakes the mirrors loose. Its felt in the frame back bone and riser. This is not a speed issue, it is related to rpm's. Has anyone with a simular bike and year had the same issue or have any idea as to the causes of the vibration, Thanks.
     
  2. rancid

    rancid Active Member

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    its caused by trying to accellerate in a to low gear, shift down before accel and it will vibrate alot less, sportsters are bad for low rpm accel vibration
     
  3. EnjoyingTheRyde

    EnjoyingTheRyde Junior Member

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    Agree with rancid here, my wife has the same bike, if I let the rpm's go too low it shakes when trying to accelerate...
     
  4. camcarvin

    camcarvin Member

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    It also may go away after motor is broke in a little more, had same issue on my 04 when i had 883 1200 conversion done it smoothed out after i got around 4 or 5000 on it
     
  5. NEWHD74FAN

    NEWHD74FAN Experienced Member Retired Moderators

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    For those of us who do not have a tachometer to reference here is a thread I found in the Search tab to help you to not "lug" the engine for smooth and easy shifts...

    http://www.hdtalking.com/general_har...ng_speeds.html

    On Sportsters, it is particularly important to let the RPMS go up a bit to avoid the vibes due to lugging the engine...

    25-30 MPH 2nd
    35-40 MPH 3rd
    45-50 MPH 4th
    55-60 MPH 5th