safe to cut a carbon fiber seatpost?
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  1. #1
    Sucker for carbon
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    safe to cut a carbon fiber seatpost?

    I was contemplating buying a 350mm carbon seatpost because it's a great price... however I only need about 300mm, maybe even 250 mm of length. Is it safe to have a full carbon seatpost cut to size (by my LBS) just like a carbon steerer or integrated seat mast can be cut?

    Thanks very much for your replies!

  2. #2
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    I don't see why not as long as you retain the minimum insertion length.

  3. #3
    Off the back
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    I cut my CF campy record one by a few cm's without any issues. In fact, it finished real cleanly, unlike my buddy's CF steerer tube that looked all rough and ratty.

    I still prefer a thomson aluminum model, cuz it's less costly and you can't tell any difference in ride.

  4. #4
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    it's ok to cut but use a sharp and very fine 32 tooth hack-saw blade. Sand any sharp edges when your done with medium grit sand-paper to avoid stress-risers.

  5. #5
    More carbon fiber please!
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    Quote Originally Posted by draganM
    it's ok to cut but use a sharp and very fine 32 tooth hack-saw blade. Sand any sharp edges when your done with medium grit sand-paper to avoid stress-risers.
    This...
    http://inlinethumb36.webshots.com/48...600x600Q85.jpg'05 Giant NRS C1 & '06 Giant TCR Advanced
    '68 Schwinn Typhoon

  6. #6
    eminence grease
    Reputation: terry b's Avatar
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    Quote Originally Posted by skaruda_23
    I was contemplating buying a 350mm carbon seatpost because it's a great price... however I only need about 300mm, maybe even 250 mm of length. Is it safe to have a full carbon seatpost cut to size (by my LBS) just like a carbon steerer or integrated seat mast can be cut?

    Thanks very much for your replies!
    I always like to answer this question with a question - why?
    You'd be better off with a netbook, they do everything better.

    My travel blog: http://tbaroundtheworld.blogspot.com

  7. #7
    More carbon fiber please!
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    Quote Originally Posted by terry b
    I always like to answer this question with a question - why?
    A fellow weight weenie, that's why.
    http://inlinethumb36.webshots.com/48...600x600Q85.jpg'05 Giant NRS C1 & '06 Giant TCR Advanced
    '68 Schwinn Typhoon

  8. #8
    eminence grease
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    Quote Originally Posted by been200mph
    A fellow weight weenie, that's why.
    I knew something was keeping me out of Le Tour.
    You'd be better off with a netbook, they do everything better.

    My travel blog: http://tbaroundtheworld.blogspot.com

  9. #9
    Sucker for carbon
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    I guess it would be pretty weight weenie-ish of me. I may not even buy the seatpost; I was mainly just curious if anyone had ever done it before with success.

    Thanks everybody for your comments and help.

  10. #10
    More carbon fiber please!
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    Quote Originally Posted by terry b
    I knew something was keeping me out of Le Tour.
    Hmmmm.... and I thought it were da doping?

    In all seriousness... if you want to drop weight on bikes there are lots of little things like that which all add up. Some folks don't care. YMMV.
    http://inlinethumb36.webshots.com/48...600x600Q85.jpg'05 Giant NRS C1 & '06 Giant TCR Advanced
    '68 Schwinn Typhoon

  11. #11
    eminence grease
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    Quote Originally Posted by been200mph
    Hmmmm.... and I thought it were da doping?

    In all seriousness... if you want to drop weight on bikes there are lots of little things like that which all add up. Some folks don't care. YMMV.
    I cared one time. Built a 15 pounder starting with a 57cm Orbea Starship frame and a bunch of other stuff. It was nice, but really nothing more than an exercise in spending money and internet research. And putting a 9v battery in my postal scale.

    Still didn't make the Euskatel Tour team that year. And I thought it was my lack of Basque language skills.
    You'd be better off with a netbook, they do everything better.

    My travel blog: http://tbaroundtheworld.blogspot.com

  12. #12
    More carbon fiber please!
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    Quote Originally Posted by terry b
    I cared one time. Built a 15 pounder starting with a 57cm Orbea Starship frame and a bunch of other stuff. It was nice, but really nothing more than an exercise in spending money and internet research. And putting a 9v battery in my postal scale.

    Still didn't make the Euskatel Tour team that year. And I thought it was my lack of Basque language skills.
    Or maybe you couldn't hang with them at the txikiteo and they gave you the boot?
    http://inlinethumb36.webshots.com/48...600x600Q85.jpg'05 Giant NRS C1 & '06 Giant TCR Advanced
    '68 Schwinn Typhoon

  13. #13
    eminence grease
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    Quote Originally Posted by been200mph
    Or maybe you couldn't hang with them at the txikiteo and they gave you the boot?
    Exactly!

    If I'd only cut that extra 50mm off of my Deda post and gained the climbing speed I'd be sitting in a seaside cantina in Bilbao trading beers and shots of grappa with Iban Mayo and Haimar Zubeldia instead of being in this stinky conference room with the bare walls in a Northern Chinese seaport ignoring something I should be listening to.
    You'd be better off with a netbook, they do everything better.

    My travel blog: http://tbaroundtheworld.blogspot.com

  14. #14
    More carbon fiber please!
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    Quote Originally Posted by terry b
    Exactly!

    If I'd only cut that extra 50mm off of my Deda post and gained the climbing speed I'd be sitting in a seaside cantina in Bilbao trading beers and shots of grappa with Iban Mayo and Haimar Zubeldia instead of being in this stinky conference room with the bare walls in a Northern Chinese seaport ignoring something I should be listening to.
    I KNEW IT! lolz
    http://inlinethumb36.webshots.com/48...600x600Q85.jpg'05 Giant NRS C1 & '06 Giant TCR Advanced
    '68 Schwinn Typhoon

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