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  1. #1
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    Save seatpost length out of seat tube?

    I am thinking of giving my back a little help when I ride my F600 and the Save seatpost seems to be a good idea but... not sure I have enough length out of the seat tube to make the Save flex work properly

    Anyone could tell me the minimum length of seatpost I need out of the seat tube?

    Thanks

  2. #2
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    Well... I didn't find the info on the web and apparently nobody knows here... I may go for a titanium seatpost instead.

  3. #3
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    Lower your tire pressure, and take a look at your bars.
    and no, I am not missing the other half of my fork....

  4. #4
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    How much tube do you have out at the moment?? I would suggest 200 - 250 is the minimum
    You can have out??

    The total length is 420mm and it changes shape half way up.

  5. #5
    FIRENZE rulez !!
    Reputation: eliflap's Avatar
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    you have to check seatpost and frame, both.

    every seatpost has a minimun insert sign, normally 9-10-11-12 cm from the bottom

    every frame requires a ... cm inside the seat tube to avoid failure. ( Flash requires 9 cm inside ).

    mix and match these two values :-)


    this is on Cannondale site but doesn't help so much:

    http://media.cannondale.com/media/Ma...echnote_en.pdf

    this is more helpful:

    http://media.cannondale.com/media/F-..._126709_EN.pdf

    check on page 7,8,9

  6. #6
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    I knew for the minimum insertion, actually, the missing info was the maximum insertion which is... on page 9, second link from Eliflap. It's for a 350mm long post but the flexing point doesn't change for a 420mm, the post is just longer to gain on the minimum insertion.

    Result: the minimum lenght out of seat tube to make the Save work properly is somewhere between 18 and 19 cm... and I have 19,5 cm available. So it's supposed to work but I'll confirm later in a bike shop.

    Thanks Flying_Scotsman and Eliflap.

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