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Post by kevink on Feb 22, 2014 15:54:10 GMT
yeah, I've had it coming off the Healy pass in the Lost Sheep on my Argon 18 tt bike a few years ago. Frightened the crap out of me as the frame was flexing from front to back and getting worse and worse as I tried to slow the bike down and not loose control.
In that case I think it was a cross wind hitting me at a funny angle while I was at high speed (60+kph)... haven't been on the bike since but I am hoping it was just a once off.
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Post by David Power on Feb 23, 2014 9:21:50 GMT
I'd get the bike checked out at your local bike shop - could be something loose or needs to be fixed. Can be dangerous, so don't just put up with it.
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Post by dan on Feb 23, 2014 19:11:10 GMT
Have had the same thing with my AR4. Had to get the bearings replaced. Not uncommon with the AR range as far as I'm aware.
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Post by robdagg on Feb 25, 2014 23:35:11 GMT
A few things that can cause shimmying/wobble at high speed are: Fork alignment - The first post in this article is worth a read - forums.cervelo.com/forums/p/1909/10723.aspxWheels being slightly out of true - Not a problem at lower speeds, but magnifies by high speed. After market Front mounted water bottles - They can unbalance the steering by applying a weight forward of the steerer. It also just happens naturally - read this - www.roadbikerider.com/advanced-skills/speed-wobbleOne of the lads has a Specialized transition that used to vibrate passing 50kph and would disappear a few ks under or over. Supposedly the bike had a natural resonance that caused the frame to vibrate at that speed. Really wierd, and you could stop it by touching your knee off the top tube... Rob |
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Post by liamjlynch on Mar 16, 2014 18:15:41 GMT
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