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Replacement for Fox Triad shock needed

moonshinemoonshine Posts: 1,021
edited December 2016 in MTB workshop & tech
Hiya,
i’ve a 2009? Specialized Stumpjumer FSR Elite that has a 7.25”x1.75” (184.2mm x 44.5mm) Fox triad shock. It’s buggered and i can either send it back to Mojo to have it fixed or buy a new shock.
the issue is the 7.25”x1.75” (184.2mm x 44.5mm)side seems to be a specialised proprietary size and there are not many replacements available - the closest i can seem to get is a 7.5”x2” (190mm x 51mm) stock shock.

whilst the 7.5”x2” size is a bit out of spec, I think i might be able to get away with it on the bike (opinions welcomed)

at the moment, i’m looking at a 2011 RP23 http://www.chainreactioncycles.com/fox- ... -prod78528 but the top fitting looks odd - it doesn’t look like the standard bushed fitment.

or a 2014 Fox Float CTD Rear Shock http://www.chainreactioncycles.com/fox- ... prod126594 but i’m struggling to work out which tune i would need - the only tunes available in the 190x51 size are CMNN

alternatively there is a 2015 2014 Fox Float CTD Rear Shock with a CWK4 or CWK4 tune http://www.chainreactioncycles.com/fox- ... prod150948

any ideas or recommendations appreciated!

Posts

  • RockmonkeySCRockmonkeySC Posts: 14,770
    The RP23 is better than the CTD.
    Specialized use odd fittings so you not fit any standard shock.
    TF Tuned can take your Triad and an RP23 to build an RP23 which will fit.
  • POAHPOAH Posts: 3,369
    another alternative is a bike yolk that allows you to fit other shocks but its not going to be cheap.
  • moonshinemoonshine Posts: 1,021
    my bike is a 2009 FSR, so has a vertical shock rather than a horizontal shock so the bike yoke solution is unnecessary.
    30917515253_6be4f80edb_b.jpg
    My research on here seems to indicate that whilst a 190x51 is not ideal, it should fit, not foul anything. it is 5mm longer, but the stroke is 5mm more which kind of cancel things out somewhat - which may mean the travel is now 132m rather than 120mm on the back, but i’ve a 100-140mm travel fork. the shock bushes that came off are the standard 12.7mm xM8 and 15.8mm wide
  • RockmonkeySCRockmonkeySC Posts: 14,770
    Longer is bad, it'll steeped the head angle and make the bike less stable. Longer stroke is also bad, you might not have the clearance on the linkage or something else which could be a problem on full compression or top out.
    5mm shorter would be better as long as you keep the same stroke.
  • The RookieThe Rookie Posts: 27,757
    As the I2I compressed is the same as before, that clearly won't be an issue.

    Raising the rear by that much will steepen the bike slightly but you could offset that by running a bit more sag and increasing the progression to counter it.
  • moonshinemoonshine Posts: 1,021
    Thanks for all the replies.
    I Spoke with TF Tuning and Mojo. it seems the shock is hydraulically locked following damper seal failure. it can be fixed as part of a service, but I'm going to live with it until I get a new 184x44 2017 Fox Float DPS Performance from Mojo in the new year.
    cheers!
  • POAHPOAH Posts: 3,369
    you can also get the cane creek DB inline and monarch RT3 in 184x44 size
  • moonshinemoonshine Posts: 1,021
    POAH wrote:
    you can also get the cane creek DB inline and monarch RT3 in 184x44 size
    Thanks. :) I looked at RS Monarchs earlier and the problem is no-one has 184x44 stock. Mojo only have 1 Fox Float DPS Factory in stock at £455 and one Float DPS performance coming in in mid Jan at £320. TF tuning may have a Cane creek at £400, but its a lot of cash to spend on a 8yr old bike.

    I’ve first option on the Fox DPS performance and I’ve a 190x51 2014 float CTD arriving tomorrow from CRC - i’ll have a think on whether to fit the CTD or wait till mid jan for the Float DPS.

    What would you do? right size of DPS but pay either £320-£450 or go for the slightly out of spec but cheaper CTD at £170?
  • cooldadcooldad Posts: 32,599
    I'd have the one I already have serviced.
    I don't do smileys.

    There is no secret ingredient - Kung Fu Panda

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  • moonshinemoonshine Posts: 1,021
    could do, but it has failed twice now in the last couple of years... at some point i’m tossing good cash after bad - a service is about £100.
    Both Mojo and TF were not particularly complimentary about the Triad - saying of all the fox shock, this is the one that is most likely to fail as it is highly stressed even at rest because of super high N2 pressure and a tiny 0-ring - so a change might be an improvement
  • cooldadcooldad Posts: 32,599
    Fair enough. I thought it was just an RP3 with a different name.
    I don't do smileys.

    There is no secret ingredient - Kung Fu Panda

    London Calling on Facebook

    Parktools
  • POAHPOAH Posts: 3,369
    bike-discount.de has the performance dps shock for 200 euros in your size
  • moonshinemoonshine Posts: 1,021
    POAH wrote:
    bike-discount.de has the performance dps shock for 200 euros in your size
    thanks for that... very helpful :)
    ok.. final question!
    CRC have a 188x44 2014 CTD evolution for £130... in stock
    what is the difference between the CTD evolution and the Performance DPS?
    I read the CTD evolution is essentially a reworked Triad, but i’m not sure and struggling to get definitive info.
    Would the DPS Performance be a better shock? (i think it might)
    Thanks
  • The RookieThe Rookie Posts: 27,757
    The evolution is at the bottom of the Fox tree and the CTD Evo were really rather horrid when they were first launched, they improved about a year ago a bit but CRC's may well be an older unit, I'd steer clear of that to be honest.
  • moonshinemoonshine Posts: 1,021
    The Rookie wrote:
    The evolution is at the bottom of the Fox tree and the CTD Evo were really rather horrid when they were first launched, they improved about a year ago a bit but CRC's may well be an older unit, I'd steer clear of that to be honest.
    thanks... confirms what i was thinking....
    bike discount. de it is then. :)
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