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  1. #1
    Junior Member STRANA's Avatar
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    Ran out of seat post

    So I just recenlty (3 weeks ago) back into cycling after many years. I purchased a cannondale Quick 6 XL. I am 6'3" and the sales person at my LBS spent time putting me on different bikes and riding them for fit. I have since found that in fine tuning the seat I am now 2" past the max height on the seat tube and I'm guesssing I need to raise the post a little more. The seat post is 350mm and the largest I have seen for a new seat post is 450mm is this enough? Should I be after the LBS for a poor fitting? Or is it just me?

  2. #2
    Senior Member catonec's Avatar
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    That bike is too small for you even though it is a xl. or you desire a unconventional fit.

    a longer seatpost will help with your leg extension but hows your reach??

    if you ride with your post above the minimum insertion line you have a very real possibility of destroying your new frame. do not ride it like that.

    Im only 5'10 so I dont know what the options are for taller riders but most likely a longer post is not the correct answer.

    If you can return the bike and start over you should. You are now more knowledgeable as to how you want your bike to fit and feel.

    gluck.
    2010 Kestrel RT900SL, 800k carbon, chorus/record, speedplay, zonda
    1997 Trek ZX6000, 6061w/manitou spyder, xt/xtr, time atac

  3. #3
    Junior Member STRANA's Avatar
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    Hmm guess I will make a trip back to the shop. I'm surprised it could actually damafge the frame! I must be right in between though for size as I can barely clear the cross tube on the stand over.

    Thank you for the feedback

  4. #4
    Senior Member goldfinch's Avatar
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    Are you sure your seat height is correct?
    Every living thing is a GMO.

  5. #5
    Senior Member catonec's Avatar
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    Quote Originally Posted by STRANA View Post
    ... I'm surprised it could actually damafge the frame!....
    the minimum insertion point is to assure that the post is at least half way past the top tube intersection. if the post is above the top tube then the weight supported by your seat post (your butt) is transferred to the 2 inch nub of seat tube above the top tube where your seatpost clamp is. that 2 inch section can crack/ bend/ or snap off.
    2010 Kestrel RT900SL, 800k carbon, chorus/record, speedplay, zonda
    1997 Trek ZX6000, 6061w/manitou spyder, xt/xtr, time atac

  6. #6
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    Yup, it's shop time again. While a longer post would give you your desired leg extension (you must be REALLY long-legged!), I'm also concerned about the fit of the rest of the bike. (NOTE: Thomson makes a 410mm seatpost....)

    Giant makes larger framed bikes; see if your shop deals with them, as well.

  7. #7
    Junior Member STRANA's Avatar
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    I'll take it back but it's been a few weeks I have feeling I'm going to have to make it work there is a 450mm seat post at the Canadian version of REI (MEC). I do have some leg length but I'm a bit tee'd that the LBS didn't see any issue.

  8. #8
    Senior Member zandoval's Avatar
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    Quote Originally Posted by DX-MAN View Post
    Yup, it's shop time again...
    Don't take that seat post indicator lightly...

  9. #9
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    Quote Originally Posted by zandoval View Post
    Don't take that seat post indicator lightly...
    Never!

  10. #10
    Thread Killer
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    Wait a minute...how can you barely have standover clearance yet require more than a 350mm seat post? Something is not right...

    ...maybe you've got really short cranks? I'd think you'd want at least 175mm crank arms, btw.
    Chaad--'95 DeKerf Team SL, '02 Lemond Buenos Aires, '05 Novara Buzz, '73 Schwinn Collegiate, '06 Mountain Cycle Rumble, '09 Dahon Mariner D7, '12 Mercier Nano, '12 Breezer Venturi

  11. #11
    Junior Member STRANA's Avatar
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    I went to the shop today and they changed my bike from an XL to Jumbo. Huge difference.

  12. #12
    Senior Member catonec's Avatar
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    nice, thats a lbs you should be happy with. Its been a few weeks since your initial purchase right?
    2010 Kestrel RT900SL, 800k carbon, chorus/record, speedplay, zonda
    1997 Trek ZX6000, 6061w/manitou spyder, xt/xtr, time atac

  13. #13
    Junior Member STRANA's Avatar
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    Yes it was over 3 weeks. They really came through.

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