Increasingly worse vibrations - oil issue? (ER6F/Ninja 650R)

Discussion in 'Road Warriors' started by Cortez, Jun 12, 2011.

  1. cogitate

    cogitate What Marcellus Wallace Looks Like

    Joined:
    Nov 23, 2007
    Oddometer:
    6,242
    Location:
    North of the Border, CA
    I had a ninja 650, first year. The buzz i eliminated by riding without the lower fairing. I had the bike apart a dozen times, fitted foam, the dealer kit, to no avail.

    Check the tig weld on the right motor mount. There were frame failures there, as the spacer originally put in by Kawasaki was a bit too small, torquing the motor mount bolt drew the mount in closer, and in use, it failled.

    The crack might be on the top side of the weld, btw. I accelerated the process by totalling my bike, and when the motor hit the road on the right side, it cracked the motor mount as described. Bad design, IMHO.
    #41
  2. Cortez

    Cortez BAZINGA!

    Joined:
    Apr 22, 2006
    Oddometer:
    7,192
    Location:
    Croatia
    Thanks, but as I already wrote, we're not discussing the notorious 'fairing buzz'
    here but actual vibrations that make your hands/feet go numb.

    I have checked the weld, it's fine, I have replaced the spacer (pictured
    above) with one that's longer, which helped a bit.

    I guess it could be possible that we all missed the crack, but I doubt it,
    3 of us were looking for it! Would that cause excessive vibrations?

    There are no vibrations when that bolt / mounting point isn't used.
    Even the fairing buzz goes away at ALL revs.

    The bike has 20k miles, these vibrations were not here until recently!
    #42
  3. Cortez

    Cortez BAZINGA!

    Joined:
    Apr 22, 2006
    Oddometer:
    7,192
    Location:
    Croatia
    Just did a quick fix, I added some bicycle tube cut-outs under these bolts on
    both sides of the bike:

    [​IMG]

    Might be my imagination, but it seems that it helped a bit.
    It can't be worse!
    :D

    Got a few nice recommendations for different grips and pegs, will try
    some more rubbery stuff, maybe even grow an ass or something.
    :huh
    #43
  4. Lep

    Lep Been here awhile

    Joined:
    Jan 23, 2006
    Oddometer:
    501
    Location:
    NSW
    Old thread this and I guess the OP solved the vibration problem on his bike.

    A couple of days ago I rode a brand new Ninja 650 straight off the showroom floor and the buzzing in the seat and handle bars was the worst I've ever experienced. Travelling through town it was unbearable. I was very disappointed as in many ways the bike would have met my requirements and the price is OK by Aust standards.
    #44
  5. Cortez

    Cortez BAZINGA!

    Joined:
    Apr 22, 2006
    Oddometer:
    7,192
    Location:
    Croatia
    Solved? Yes, I sold the bike.

    The issue on 2006-2008 models was a frame mount on upper right side that
    was fabricated 6mm too short, and with time it bends the frame and then the
    frame cracks at that spot and vibrations get worse and worse as this slow
    process is happening.

    I was told that 2nd and 3rd gen bike had considerably less vibrations, and
    to be perfectly honest I didn't have any issues with vibrations on mine for
    the first 10k miles. They were there, but never bothered me.
    #45