Fork midvalve question- and other DIY suspension tuning

Discussion in 'Dakar champion (950/990)' started by slackmeyer, Sep 5, 2011.

  1. Zuber

    Zuber Zoob Supporter

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    Buy a thread file and clean it that way. I doubt that you could start a die on it without cross threading that too.
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  2. COXR650L

    COXR650L Long timer

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    I got everything back together. I was one shim short on the second rebound stack and was pissed I'd have to eat shipping for an .89 part. Luckily I counted right and it was in the existing shim stack, stuck to another shim.

    Excited to get the bike back together and try it out. Thanks for the help guys.

    Out of curiosity, what was the purpose of the "ring" shims in the stock stacks?
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  3. Johnf3

    Johnf3 Long timer

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    Ring shims are supposed to preload the face shims. The outer "ring" shim is thicker than the shim it circles. This causes the face shims above the ring shim to be preloaded the amount of the difference between the ring shim and the thinner shim that it is installed around.
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  4. 1coolbanana

    1coolbanana Long timer

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    Let us know how it goes :-)
  5. COXR650L

    COXR650L Long timer

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    Got some miles of the bike since the front revalve around Moab. Wow what a difference. LOVE the set up. Amazing how well it works.

    Nice work fellas. Thanks for the help.
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  6. MadM

    MadM Dreamer Supporter

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    Any one has a good and tested rear shock valving to share? I only got a 950SE one and can't seem to get a hold of a ring shim in my neck of the woods.

    ------------------
    @1coolbanana and @COXR650L

    Any progress with your shim stacks? Your final versions and verdicts?
  7. 1coolbanana

    1coolbanana Long timer

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    Personally I think you will be going backwards using an SE stack. IMHO.
    Ring shim isnt absolutely needed, it just provides some extra preload on a shim.
    Just use a thicker shim or double up.
  8. MadM

    MadM Dreamer Supporter

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    I wasn't thinking about stock 950SE valving. I got this info below from an inmate a long while back and the shock valving was only tested on a SE and than he went silent with any feedback. In green are forks and yellow is shock.
    [​IMG]
  9. Rharr

    Rharr Been here awhile

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  10. MadM

    MadM Dreamer Supporter

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    So with what can I replace a ring shim that is:
    Base: ID16xOD34x0,15
    Ring: ID34xOD36x0,25

    Shipping to Europe is more than shims themselves :(
  11. 1coolbanana

    1coolbanana Long timer

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    36 x 16 x 0.20
    or even
    36 x 16 x 0.1 x 3 off
    or
    36 x 16 x 0.15 x 2 off

    Depends on if you want to soften or firm it up
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  12. timolgra1

    timolgra1 Been here awhile

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    I've just ordered a bunch of shims from FTR Suspension UK.
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  13. MadM

    MadM Dreamer Supporter

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    Wll, I bit the bullet, ate the shipping costs and here they finally are:
    [​IMG]

    With a small change:
    Base: ID16xOD34x0,15 is now ID16xOD34x0.20
    Ring: ID34xOD36x0,25 not with the order, looking for ID34xOD36X0.30

    Now to find a way to get the shock spring off...
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  14. 1coolbanana

    1coolbanana Long timer

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    And the adventure begins :lol3
  15. denisktm

    denisktm n00b

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    I've tried the JohnF3 setup on my 990 r with 0,66kg NM springs and the results is awesome, at least on the road. I'll try it offroad this week-end but I'm really positive about how the front end behave. I've also upgraded the back spring to 150nm as I'm weighting 103 kgs and the shock is much more progressive like this ( no need to tighten too much the preload) -> thanks again for all the people who worked on this setup !
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  16. Johnf3

    Johnf3 Long timer

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    I have heard from riders all over--Europe, Australia, USA--that have had the confidence to dive in and go to work on their suspension because of this thread. This is supposed to be how an motorcycle forum works!.
  17. 1coolbanana

    1coolbanana Long timer

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    It certainly helped me get an understanding.
    Thanks to all again.
    My suspension is awesome thanks to you guys and I learnt heaps which is a bonus :thumb
  18. MadM

    MadM Dreamer Supporter

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    +1. The shim stack I posted above is a slackmayer's last sheet, since he is aprox. same weight as me I thought to give it a try first.

    Your 9x0 conversion with all the suspension info in between is the reason I went DIY route, even though I already spoke with Konflikt for a custom set all-round.
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  19. 1coolbanana

    1coolbanana Long timer

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    Im pretty happy with the finished product now :D

    [​IMG]
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  20. MadM

    MadM Dreamer Supporter

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    :tb:tb:tb:tb:tb:tb:tb:tb:tb:tb:tb:tb:tb:tb:tb:tb:tb:tb:tb:tb:tb:tb:tb:tb:tb:tb:tb:tb:tb:tb:tb:tb:tb:tb