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  1. #1
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    Fork vs shock length

    I will be getting my first FS soon. When setting sag I have read you want to be 25 -30% of the tube length. The bike I am getting has a 140mm shock and fork. The fork seems to have much longer tubes even through the travel is the same? Do you I simply take 25% of 140mm and not worry about how much tube is exposed? Bob

  2. #2
    Formerly of Kent
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    Yes, 25% of the tube length.

    Rear suspension uses leverage ratios to (i.e., 2.5:1, 2.8:1, etc) to compress the rear shock at a rate less than the actual movement of the axle. So, while the shock might compress 10mm, the rear axle is moving 28mm (depending on ratio).

    The shock itself probably only has the ability to move ~1.5-2.5", again, depending on leverage ratio.
    Death from Below.
    RLTW!

  3. #3
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    Thanks I did not know that. Bob

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