Seatpost Size Question
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  1. #1
    RoadBikeReview Member
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    Seatpost Size Question

    From this picture, is my Seven seatpost size 27.2mm or 28.6mm? I measured the inside diameter of the seat tube and I am getting ~27.9mm with the tip of the tube already bent.



    How do you compare it with your seat tube? It is tightened the same way? What seatpost size will you recommend?

    I got my Seven used.

  2. #2
    RoadBikeReview Member
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    Should be 27.2mm. They have a composite sleeve inserted in the seat tube to prevent seizing.

    Tim

  3. #3
    RoadBikeReview Member
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    Thank you!

  4. #4
    RoadBikeReview Member
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    Yes, it should be 27.2mm seatpost. I have the same sleeve and screw and everything. But my seatpost keeps sliding inside the seat tube. I've tightened it very hard. I asked my LBS about it and he said I need carbon paste which has fine grit in it to provide friction between two carbon surfaces.

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