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Old 11-01-08, 06:41 PM   #1
darksiderising
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Carbon steerer flexing

I just installed a Ritchey WCS Carbon Cross fork and I can cause the steerer to flex quite a bit with not as much force as I would expect. I can make it flex in all directions (left/right, up/back, and twisting). Is this normal for carbon steerers?
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Old 11-01-08, 07:38 PM   #2
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Thats never happened to me, but both my road and cross forks are the respective easton EC90 forks.
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Old 11-01-08, 07:44 PM   #3
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Does the EC90 have an aluminum sleeve on the inside of the steerer, or is is 100% carbon?
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Old 11-01-08, 08:01 PM   #4
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How much does the steer tube extend above the headset? 40mm of spacers is the recommended maximum for carbon.
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Old 11-01-08, 08:50 PM   #5
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There is a 10mm spacer and a cable stop that acts as a 10mm spacer, as well. So in all, 20mm of spacers.
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Old 11-02-08, 07:40 AM   #6
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I hear that is prone to flexing in addition to the Easton EC90x.
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Old 11-02-08, 10:39 AM   #7
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I dont think that my easton has an aluminum sleeve. It dosent seem to flex, and I never get any fork shudder.

Just for reference I weigh about 150# so I'm about average sized
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Old 11-12-08, 12:46 AM   #8
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I have an EC70X, no flex, alu steerer. I suggest you take it to the shop and be safe. You don't want this to happen:

http://jamesbuckroyd.blogspot.com/20...of-season.html
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Old 11-12-08, 03:20 AM   #9
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Quote:
Originally Posted by jbucky1 View Post
I have an EC70X, no flex, alu steerer. I suggest you take it to the shop and be safe. You don't want this to happen:

http://jamesbuckroyd.blogspot.com/20...of-season.html
Mine is a Ritchey, with a carbon steerer.
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Old 11-12-08, 08:57 PM   #10
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What stem are you using? Could it be contributing to the flex you feel?
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Old 11-12-08, 09:32 PM   #11
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how much stack do you have on it?

i have been on an orbea with a front end that flexy though, sometimes its just how it happens...but i might take it to a shop just to check it out.
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Old 11-12-08, 10:46 PM   #12
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I test rode a Ridley CrossWind with the renowned 4ZA fork. Carbon steerer, flexed more than I thought a cross fork should.

Most carbon steerers flex a little bit. The ones that dont have staggered bearings size (madone, SL2).

Carbon is designed to flex in a designed direction and be stiff where needed. Have a good shop check it out.

But its probably the nature of the beast.
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Old 11-13-08, 06:05 AM   #13
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If it's flexing easily, I would assume that it's cracked. You shouldn't be able to flex it. Have it checked out.
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