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Fork vibrating when braking downhill(6 posts)

Fork vibrating when braking downhillSt Monica Rider
Apr 21, 2003 7:14 PM
Got a new bike with Reynolds Ouzo Pro fork. When going downhill at 25 mph+, I noticed that the fork would vibrate when I press the front and rear brakes to stop. Is this normal?? Otherwise, the fork works extremely well, smooth and kills most road noise.
re: Fork vibrating when braking downhillukiahb
Apr 21, 2003 7:55 PM
I don't know if that ins normal for that fork or not, but vibration while braking is often caused by oil or grease on the rim...it only takes a little bit. It might be worth wiping the rims down w/ rubbing alchohol to see if that helps.
re: Fork vibrating when braking downhillIwannapodiumgirl
Apr 21, 2003 9:53 PM
If these are "death wobbles", try relaxing your arms and shoulders when descending, and where possible, feather the front brake, as opposed to applying it.
What makes you think it is the fork?DY
Apr 21, 2003 10:01 PM
There are quite a few components that could all work in harmony or disharmony to create a speed wobble. It is a subject that has been discussed here a few times. It is also hard to sometimes isolate the problem.
re: Fork vibrating when braking downhillNikoK
Apr 22, 2003 5:41 AM
Have you checked the headset isn´t loose ? It doesn´t have to be too loose to create that kind of problem.

Niko
second, check headsetcyclopathic
Apr 22, 2003 2:50 PM
it is common even for "professionally" installed headsets to get loose on first few rides. Adjust or take to LBS if bought new or fork was installed in LBS. And it doesn't take much to develop shimmy

CP

PS. if happens on downhill stand up and hug top tube with knees good luck