Fox 32 FLOAT 29 CTD Not working correctly

hazzy87
hazzy87 Posts: 26
edited December 2015 in MTB workshop & tech
Hello Guys,
My fox 32 float 29 cdt fork wont work when i turn the lock out on the top.
The lever moves smoothly between trail, descend and climb but the fork does not feel any different in each setting. The forks compresses well and holds air eactly the same on each setting?
Any help much appreciated. :D

Comments

  • rockmonkeysc
    rockmonkeysc Posts: 14,774
    How old is the fork and has it ever felt any different?
    Is it the performance or evolution CTD? The evo model is pretty chappy and there's very little difference between the three settings.
  • Its the evolution fork. Its approx two years old.
    I heard that if the bike has been upside down it can affect the fork?
  • rockmonkeysc
    rockmonkeysc Posts: 14,774
    It's a good idea to store it inverted or hanging from the front wheel so the seals are soaked in oil.
    Is there any compression damping at all? Let the air out of the fork and with it in the climb setting push down on the fork and you should feel resistance. If not then your damper needs a service but I'm not sure there's much you can do with the sealed CTD damper.
  • The Rookie
    The Rookie Posts: 27,812
    The biggest change is in the floodgate setting, you won't feel that by bouncing the forks at all, or riding on relatively smooth trails, trying riding up a low kerb in the different modes and you should feel the difference.
    Currently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.
  • Floodgate is a rockshox thing.
    CTD just changes the low speed compression.
    Which is sort of the same but different in application.

    If it is a factory series there is very little difference just pushing on it, but if you have a remote you can feel a distinct change on the trail.
  • The Rookie
    The Rookie Posts: 27,812
    What you call it is semantics.....
    Currently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.
  • rockmonkeysc
    rockmonkeysc Posts: 14,774
    What you call it is semantics.....

    Don't you just hate pedantic cockwombles with nothing useful to add?

    CTD is just a less adjustable floodgate, basically the same thing. You won't feel a difference in the settings by just bouncing on the fork.
  • What you call it is semantics.....

    Floodgate is a platform, CTD is just switchable low speed compression damping.
    The Fox setup has no platform whereas the floodgate is deliberately set up to platform and then break through.
    Very different on trail effects but using the same technology to achieve.

    So not just semantics.
    Either show up at less than big impacts and the first thing most people do is slam the fork down as hard as they can, which only reveals the built in unadjustable endpoint compression damping.
  • The Rookie
    The Rookie Posts: 27,812
    If you think floodgate is just pedal platform, you clearly don't know what it does, it sets the maximum input speed at which the load speed damper continues to operate, thus improving control on sections with no big impacts but still a rough surface. CTD is slightly different but has the same intent.
    Currently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.
  • If you think floodgate is just pedal platform, you clearly don't know what it does, it sets the maximum input speed at which the load speed damper continues to operate, thus improving control on sections with no big impacts but still a rough surface. CTD is slightly different but has the same intent.

    The floodgate changes the pressure(speed of oilflow) that opens up the main damping circuit, hence the platform.
    The Fox changes the restriction of the low speed port and hence the slow speed damping, but does not control the breakthrough point to the main damping circuit. Hence no platform, just increased slow speed damping to control motion.

    Both manipulations of very simple slow speed/high speed damping circuits, but very different in operation and intent.
  • The Rookie
    The Rookie Posts: 27,812
    It does create a platform, but it's much more than that, otherwise cars wouldn't have it......

    The Fox have a bypass just not adjustable, without in ether would be horrendous to ride!
    Currently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.
  • rockmonkeysc
    rockmonkeysc Posts: 14,774
    Both are pedal platforms. They use different methods to achieve a similar effect.