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  1. #1
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    Seatpost minimum insertion point

    Seatpost minimum insertion point-20140118_115142-1.jpg

    Hi everyone. From where exactly do you measure the minimum insertion? From the top of the seat tube (where where the seat clamp is) or from the small "viewing" hole (some cm below)?

  2. #2
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    Reputation: Haggis's Avatar
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    Top of clamp. 80mm is min but I'd err on 100mm

  3. #3
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    OK. Thank you. I thought that since there was this little hole I should be using it as my limit point instead of the top of the seat tube.

    By the way what is the use of this little hole?

  4. #4
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    Seatpost minimum insertion point

    It's there to prevent any cracks forming from the slot. If there is room; it's better when manufacturers put the slot on the front side - surprising how much water off the back wheel gets down the seat tube

  5. #5
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    Thank you!

  6. #6
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    I would use the 1" below the top tube lower weld for your kin insertion point. The post and the frame may have different specs, the frame is much more critical.
    Todd

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