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  1. #1
    junior senator from ky paddyb's Avatar
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    can you bend a front derailleur clamp?

    Has anyone ever tried to bend a front derailler clamp to accomodate a bigger seat tube size? I'm trying to go from a 31.8mm to a 34.9mm tube. This is an FD-4500B Tiagra type.

  2. #2
    Senior Member Retro Grouch's Avatar
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    I doubt it'll work.

  3. #3
    Sometimes knows stuff. rmfnla's Avatar
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    It won't work, but that's not too expensive a component.

    Buy the correct size and sell the old one on ebay.
    Today, I believe my jurisdiction ends here...

  4. #4
    Your mom
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    You can bend it. But it probably won't work. And given how cheap FDs are, it's not really worth it.

  5. #5
    Spelling Snob Hobartlemagne's Avatar
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    Its one of the cheapest components on the bike. Saving you the stress is worth the $40.

    The first rule of flats is You don't talk about flats!

  6. #6
    junior senator from ky paddyb's Avatar
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    That's what I thought. Even if you could bend the thing (those clamps are hefty looking), the bolt probably wouldn't line up anymore.

    Thanks, I'll pony up and stop being so cheap. Cheers

  7. #7
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    Don't do it!

    Quote Originally Posted by paddyb View Post
    Has anyone ever tried to bend a front derailler clamp to accomodate a bigger seat tube size? I'm trying to go from a 31.8mm to a 34.9mm tube. This is an FD-4500B Tiagra type.
    One time to protect a respray I put handlebar cloth tape under a campag record front clanger and when I tightened it the clamp snapped! That's how precise the size is.

  8. #8
    Sometimes knows stuff. rmfnla's Avatar
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    Quote Originally Posted by greenjersey View Post
    One time to protect a respray I put handlebar cloth tape under a campag record front clanger and when I tightened it the clamp snapped! That's how precise the size is.
    I'd say that is more an indicator of how unforgiving the clamp material is.
    Today, I believe my jurisdiction ends here...

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