Pitfalls of 130mm or 140mm fork on x00DS frame?- Mtbr.com
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  1. #1
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    Feb 2009

    Pitfalls of 130mm or 140mm fork on x00DS frame?

    How mighty the change in geometry negatively affect the ride of a x00DS if a longer travel fork is installed?

  2. #2
    mtbr member
    Join Date
    Oct 2007
    A very general rule of thumb is that for every 20mm change in fork length you will decrease the head angle 1 degree. 1 degree is pretty significant, but is usually acceptable. Any more than 1 degree and the geometry is going to be pretty out of whack because you are going to throw your seat angle far out and make it hard to position the seat correctly and your steering will be pretty slow.
    But be careful with Motobecane frames. Many of these frames were originally designed around 80mm forks, and they now have more travel, but I am not so sure that they have changed the geometry of the frames to match the longer forks (based on the fact that they have not changed their geometry charts on their site). So your geometry may already be off to begin with and a longer fork will really screw it up.
    2015 Niner Jet 9 Carbon
    2014 Focus Raven 27R
    2017 Lynskey GR250
    2016 Niner BSB
    1987 Haro RS1

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