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  1. #1
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    Skew-mounted Rack and Carbon Forks

    Hey y'all...
    A general wondering...

    My buddy recently upgraded his roof-mounted skewer rack to one that doesn't require the removal of the front tire, so the mount now clamps down on the front wheel. He told me that the fork he has is all carbon, including the front dropouts so over time the mount's skewers could cause damage. Seems to make sense as a hard turn might put a lot of stress on the dropouts. Thought I would get some feedback from the think tank.

  2. #2
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    it's really no different than the skewers that come with bike.

    it's like Goldilocks and the 3 bears....

    too loose and the bike is coming off when you drive.

    too light, you may damage the fork.

    just right, bike stays put without risk of damge.
    2010 Specialized Secteur Elite upgraded with 32T cassette and does not have Stan's (yet)
    2009 Specialized Rockhopper Comp 29er upgraded with 36T cassette and Stan's Arch EX rims and tubeless. Considering a 1x10 upgrade
    2013 Cannondale CAADX-6 Tiagra upgraded to 32T cassette and Stan's Alpha 400 rims and tubeless
    2008/2009 Burton T6 156cm with Burton Triad Bindings & DC Judge boots

  3. #3
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    Quote Originally Posted by tednugent View Post
    it's really no different than the skewers that come with bike.

    it's like Goldilocks and the 3 bears....

    too loose and the bike is coming off when you drive.

    too light, you may damage the fork.

    just right, bike stays put without risk of damge.
    I agree the skewers aren't that different, but the forces the bike undergoes when on the roof mount might be the bigger issue.

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    Quote Originally Posted by octobahn View Post
    I agree the skewers aren't that different, but the forces the bike undergoes when on the roof mount might be the bigger issue.
    the dropout is still designed to withstand large forces acting on it. If it can't handle it, the dropout would not be made of carbon fiber. Many of the Pro SAG-wagons use fork mounted roof carriers.

    if that really concerns you, then go purchase an "upright" carrier.
    Last edited by tednugent; 07-23-2013 at 07:24 AM.
    2010 Specialized Secteur Elite upgraded with 32T cassette and does not have Stan's (yet)
    2009 Specialized Rockhopper Comp 29er upgraded with 36T cassette and Stan's Arch EX rims and tubeless. Considering a 1x10 upgrade
    2013 Cannondale CAADX-6 Tiagra upgraded to 32T cassette and Stan's Alpha 400 rims and tubeless
    2008/2009 Burton T6 156cm with Burton Triad Bindings & DC Judge boots

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    Quote Originally Posted by tednugent View Post
    Many of the Pro SAG-wagons use fork mounted roof carriers.
    Good point.

    Nah, I wanted to get some thoughts. My wife has a skewer roof rack and she likes to take the turns pretty quickly. Just thinking I might want to take the aluminum bike when she drives (but I think the fork is carbon...ahhh). :P

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    Well there's your problem right there, don't let the wife drive when you're in the car & your bike is on the rack.

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    Quote Originally Posted by octobahn View Post
    I agree the skewers aren't that different, but the forces the bike undergoes when on the roof mount might be the bigger issue.
    Think about it - compare the (centripetal) forces that could be generated with 20 lbs. of bike weight in a turn and the forces that could be generated with 200 lbs. of bike + rider in a turn. Passenger cars are not turning that sharply. No way.

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    Quote Originally Posted by Kerry Irons View Post
    Passenger cars are not turning that sharply. No way.
    Sometimes they do. I take the bikes off first, though.



    I do worry sometimes on bumpy roads (like the awful streets here in Brooklyn), enough that I've gotten out a few times just to make sure the skewer was nice and tight.

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    Re: Skew-mounted Rack and Carbon Forks

    Your post jogged my memory. I recall seeing a video where roof bike racks were tested. Gonna see if I can find them. Of course these are the extreme cases.

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    Quote Originally Posted by MrMook View Post
    Sometimes they do. I take the bikes off first, though.



    I do worry sometimes on bumpy roads (like the awful streets here in Brooklyn), enough that I've gotten out a few times just to make sure the skewer was nice and tight.
    You're not driving hard enough. All 4 wheels are still touching the ground
    2010 Specialized Secteur Elite upgraded with 32T cassette and does not have Stan's (yet)
    2009 Specialized Rockhopper Comp 29er upgraded with 36T cassette and Stan's Arch EX rims and tubeless. Considering a 1x10 upgrade
    2013 Cannondale CAADX-6 Tiagra upgraded to 32T cassette and Stan's Alpha 400 rims and tubeless
    2008/2009 Burton T6 156cm with Burton Triad Bindings & DC Judge boots

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