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Speed Wobbles

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  • 22-05-2008 6:30pm
    #1
    SACH Central
    Registered Users Posts: 348 ✭✭


    A strange and frightening thing happened to me yesterday while out training. I got what I think is termed, a speed wobble. In fact the whole frame wobbled. I didn't think aluminium and carbon could, frankly, wobble so much/violently.

    I was coming down a fairly fast decent (I reckon 1: 10) on a narrowish road. I'm not a nervious decender (at least up until yesterday!) but I'm not one of these kamikaze decenders either. I was in the drops freewheeling. There was a strong, gusty cross wind and a car approached. I applied both brakes evenly as the car approached just to be sure...and then it happened. The whole bike just started to shake under me. Of course I was afraid of crashing and braked harder, which might have made matters worse. I managed to stop the bike completly without falling off but it certainly frightened the bejasus out of me.

    I checked my speedo, I was doing 35.5MPH so I wasn't going fast. I also checked the headset....rocking the bike forwards & backwards with both braked on full. The was no play in it. The bike handled fine before, and again after, although I did take it easier on any more downhills.

    Anyone got any ideas as to why it might have happened?


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