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Shaking Handlebar at certain speeds

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  • 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
    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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    • #3
      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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      • #4
        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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        • #5
          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

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          • #6
            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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            • #7
              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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              • #8
                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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                • #9
                  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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                  • #10
                    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!
                    The Leh Experience!!
                    My '08 Suzuki GSX650F

                    Escapade to the Eastern Ghats
                    Orissa 1302
                    My BlackBull - Bullet Electra 5S

                    sigpic

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                    • #11
                      its probably coz of d forks or d tires...even my friends cbz has that prob..oh and have u fixed a shorter handlebar??...if u have switch it to d stock one and c if it helps...and also get your wheels checked by trusty mechanic...
                      Rock and Roll ain't noise pollution....

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                      • #12
                        Check your front wheel bearings & change fork oil.
                        "The trouble with the rat race is that even if you win, you're still a rat" - Lily Tomlin

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                        • #13
                          my cbz gold also had a similar problem. the mechs told me to get the cone set changed. after that the problem did subside a bit but i wasn't satisfied. a thorough checkup of thefront wheel revealed that the wheel drum had 'worn out'. the mechanic said this is something very rare. so i got the drum replaced and voila! the problem was solved

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