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Thread: Shaking Handlebar at certain speeds

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    Post Shaking Handlebar at certain speeds

    HI all, i have a CBZ* 2004 model,just clocked 20,000. My problem is when i hold the handlebar loosely or let go of my hand it shakes violently between speeds of 50-75,, I've this problem from many years, i tried wheel alignment(truing), also got wheel rim bend removal few months back, still the problem persists..
    I can see the front shocks shaking lightly while handlebars shake. If I hold the handlebar tightly shaking stops. some say its the tires,some say its chassis prob,,
    Pls help me figuring out what may be wrong.

    Also where can i get genuine K & N in Bangalore,model and cost etc,,pls

  2. #2
    Rusted ken cool's Avatar
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    Query Approved

    Welcome to xBhp!
    The Wheel was a great invention; Two Wheels with a Motor in between was even better!


    BMW Motorrad Days 2011

    Xbhp's Indo-French Kashmir-Ladakh Tour

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    Rusted MaSh's Avatar
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    By any chance did your forks ever bend cos of a collision or something?
    In-correct tire pressure also results in wobbling. Check the rear swing arm bushes, uneven tire wear.
    **MaSh**

    **Work to Ride and Ride to Work**

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    I can't pinpoint a problem online, but i can tell you the parts that could be responsible for the vibration. So go through this list and verify its all good.

    1) Wheel alignment
    2) Tyre alignment to the wheel
    3) Wheel bearings
    4) Untrue forks
    5) T-Plate

    From what I read, looks like the T-plate+Rim to me. Also check if one or both forks are leaky, when you are truing it. And when you are truing it, go to some fellow who does it accurately and not trust your mechanic to go get it done from wherever. It should be tested on a dial gauge at 0 microns deflection, or at least close. Don't get the forks trued with the outer pipe assembled. Dismantle it and then get it done. You will incur additional costs of assembling/dismantling as well as new fork oil.And by the way, its NOT a chassis problem.

    If you are looking for the typical pod filter of K&N, the grey market probably makes more sense but you risk getting a duplicate. It doesn't make much sense putting a K&N pod filter on any road bike but thats a personal opinion. I don't know dealers in Bangalore.

    Hope this helps

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    Rusted manohar_manu's Avatar
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    Smile

    I had same problem in my P150 at speeds 65kmph.
    tried all things as you said. but finally replacement of cone-set solved the problem.
    Try that.
    [SIGPIC][/SIGPIC]

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    Rusted Raccoon's Avatar
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    If after ruling out the stuff mentioned above, the problem still does not get resolved, suspect the tyres.

    I bought a new ribbed Dunlop tyre for my Shogun and the tyre was fine for about 3 months or so, but later the handle started wobbling. Suspected the tyre as the last resort, and it sure was the culprit! Got it changed in warranty. What is notable is that there was absolutely no signs of any visible defects... and the problem occured AFTER a good 3 ish months of riding!

    Which tyre are you using btw?

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    Thumbs up

    sorry guys for late reply,,
    i have changed cone set in the past and it didnt help ,,
    wil try changing tyres,, have to replace fork oil too as it has done 10k kms..

    thanks guys for all ur replies

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    Wink loosen ur steering cone

    hey when u turn ur handle around slowly do u feel the handelbars are ticking like clock needle..if yes then u just have to get ur steering cone loose...the service center guys normally make it tight.
    cheers
    VK

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    Rusted ken cool's Avatar
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    Quote Originally Posted by HarshaS View Post
    sorry guys for late reply,,
    i have changed cone set in the past and it didnt help ,,
    wil try changing tyres,, have to replace fork oil too as it has done 10k kms..

    thanks guys for all ur replies
    Also check the rear axle bearings.
    The Wheel was a great invention; Two Wheels with a Motor in between was even better!


    BMW Motorrad Days 2011

    Xbhp's Indo-French Kashmir-Ladakh Tour

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    Rusted diffuser911's Avatar
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    The suspension bush might also be a culprit, as it was in my case. Try keeping the bike still on the main stand and move the rear tyre sideways with your hand. If it moves, bingo!

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