Rock shock reba problem

rossgalway
rossgalway Posts: 43
in MTB workshop & tech
Hi, I have 120mm reba's and I've lost a least 20mm travel. When I try to extend the fork it just springs back. Does anyone know what the problem is?

Thanks
Ross

Comments

  • JBA
    JBA Posts: 2,852
    Sounds like you are suffering from ‘suck down’ caused by air trapped in the negative chamber. Do a google search and you’ll find lots of mention of it and solutions.
    This GMBN video explains how to cure it.
    “Life has been unfaithful
    And it all promised so so much”

    Giant Trance 2 27.5 2016 ¦ Sonder Broken Road 2021¦ Giant Revolt Advanced 2 2019 ¦ Giant Toughtroad SLR 1 2019 ¦ Giant Anthem 3 2015 ¦ Specialized Myka Comp FSR 2009
  • steve_sordy
    steve_sordy Posts: 2,453
    As Doddy says in passing, try the zip tie trick first.

    With a 4mm zip tie, dip the thin pointy end in some wet lube and carefully insert it between the stanchion and the wiper seal on the air side. You may have to squeeze the seal slightly between thumb and forefinger to help it to bulge and create a gap for the zip tie.

    Once in, push it well in until the thick part of the zip tie is into the fork by about an inch. If you are lucky, you will hear a hiss as the excess air is released. Stand back and observe the results!
  • rossgalway
    rossgalway Posts: 43
    Cheers I'll give this a go!

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