revelation travel issues!!!

lock1981
lock1981 Posts: 546
edited July 2009 in MTB workshop & tech
ive just been checking my sag on my rock shox rev 426

when removing all the air, the bottom part of the fork doesnt touch the crown of the fork. by at least 20mm.

which means my 140mm forks are 120mm!!!!

whats that all about???

im under the impression that the fork should compress all the way up to the top

please help

:twisted:

Comments

  • Jimbo.
    Jimbo. Posts: 124
    Not *completely* to the top, but from memory the wiper seals should get within 5-8mm of the crown. However, 20mm sounds too much.

    IIRC it's oil leaking from the damping mechanism and accumulating in the bottom of the RH fork leg. Upon compresion the fork goes into a "hydrolock", stopping short of maximum travel. Fixing it involves replacing an O-ring...somewhere...however, I can't recall which nor where right now! Said to be quiet easy, mind...
  • lock1981
    lock1981 Posts: 546
    cheers anyone know anything about this??

    saying that i am getting a bit of yellowie liquid coming out when i remove the air from the neg chamber
  • Jimbo.
    Jimbo. Posts: 124
    lock1981 wrote:
    cheers anyone know anything about this??

    saying that i am getting a bit of yellowie liquid coming out when i remove the air from the neg chamber

    That's the LH leg that contains the spring. The problem is within the RH leg with the damping system. That "liquid" from the air valve is normal: it's the lubricating oil from within the chamber that keeps it sealed and sweet. To reduce/prevent this, turn the bike upside down before inflating/deflating the chamber. Not sure on colour though, never looked: I normally forget to invert and end up gently misting my discs with fork oil!
  • Jimbo.
    Jimbo. Posts: 124
    Better explaination that I could ever muster, here:

    http://forums.mtbr.com/showthread.php?t=493022
  • lock1981
    lock1981 Posts: 546
    cheers for that.

    big help!!

    get in touch with my lbs and get them set off to rockshox, still undr wanenty only had them 5 months or so

    probably always been like that when i think about it

    nowt but trouble this bike!!

    but its a trail eating machine and i love it :lol:
  • nicklouse
    nicklouse Posts: 50,673
    what did you do to the fork before this happened?

    and which 426 is it?
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown

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