Advertise on Bikeforums.net



User Tag List

Results 1 to 5 of 5
  1. #1
    Wood Licker Maelstrom's Avatar
    Join Date
    Apr 2002
    Location
    Whistler,BC
    My Bikes
    Transition Dirtbag, Kona Roast 2002 and specialized BMX
    Posts
    16,888
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Setting up suspension

    Ok I have been trying to figure out how to set up my rear suspension. I believe I have 2.25 travel shock with a 650pnd spring (the spring is actually rated for a 2.35 travel shock...is this bad) on it. So this is what I did

    1 - undid the spring completely and unweighted the shock
    2 - tightened shock until snug while unweighted. This is my starting position. I have a difference in 16.4 between the top of the wheel and the back of the seat
    3 - I sit on the bike. I make 2 complete turns and end up with 14.6 inches between the top of the wheel and the seat. This is 1.9 inches of sag which is around 30% of my travel in sag.

    Does this sound right? and a couple of questions

    1 - 2 turns is it right. So if I wanted to be able to run it stiff (allow for better trail riding for example) I would need a stiffer spring correct?
    2 - Any other suspension setup tips. Right now it is set to 69 degrees and 6.3 inches of travel. I just am unsure as to how to optimize my ride.

    BTW thanx for all the help this bike does rock. I love the feeling on the trail. And it eats up the trail and I might add the drops. Now I just need to sell these clipless pedals that came with it and the fork and buy something else like a z150 or something

  2. #2
    Senior Member oxygen_77's Avatar
    Join Date
    Sep 2003
    Location
    Renton, WA
    My Bikes
    Specialized Stumpjumper FSR, Specialized P.2, Kona Coiler
    Posts
    151
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    seems like 30% of your travel being eaten up by sag is a bit too much... even rockshox website only recommends 20% but I've found that those measurements are way too much. I would personally go with around 10-15% sag travel.

    Why would you need a stiffer spring? Couldn't you just tighten the preload further? That should stiffen up the shock a bit and reduce the sag. If you like the 30% sag then I guess you would need a stiffer spring and less preload (maybe like 1/2 a turn).

    What fork did the bike come with? I may be interested...
    Last edited by oxygen_77; 09-23-03 at 06:22 AM.
    Specialized Stumpjumper FSR, Specialized P.2, Kona Coiler.

  3. #3
    Gravity Is Yer Friend dirtbikedude's Avatar
    Join Date
    May 2002
    Location
    "Over the Hill" and going down fast in the 805.
    My Bikes
    Scott Gambler, Scott Ransom, Kona Bear, Bianchi 928 Carbon/Chorus, C'Dale Rize4
    Posts
    2,961
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Which shock is on it?

    If you have an RC then do not forget to set the rebound (the knob that says slower , blue), which I find to be more important then the compression. If you have it to fast it will throw the rear wheel over your head when jumping or feel like a jackhammer if going fast over stutter bumbs.


  4. #4
    Senior Member oxygen_77's Avatar
    Join Date
    Sep 2003
    Location
    Renton, WA
    My Bikes
    Specialized Stumpjumper FSR, Specialized P.2, Kona Coiler
    Posts
    151
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Originally posted by dirtbikedude
    Which shock is on it?

    If you have an RC then do not forget to set the rebound (the knob that says slower , blue), which I find to be more important then the compression. If you have it to fast it will throw the rear wheel over your head when jumping or feel like a jackhammer if going fast over stutter bumbs.

    Very good point... my bike has the rebound dampening set high enough that if I hold the bike by the top tube and let it fall down to the ground it doesn't bounce at all... the shocks eat up the fall completely. I had to set it that way because I kept getting bounced off my pedals when going over washboard-like dirt tracks. My rear shock is a Fox Float RL with the rebound set to the middle setting.
    Specialized Stumpjumper FSR, Specialized P.2, Kona Coiler.

  5. #5
    Wood Licker Maelstrom's Avatar
    Join Date
    Apr 2002
    Location
    Whistler,BC
    My Bikes
    Transition Dirtbag, Kona Roast 2002 and specialized BMX
    Posts
    16,888
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Its a Fox r (forgot that point eh) in the manual 30% is the lower range setting for extreme use and dh.

    As for tightening the preload the manual states a number of times not to turn the preload more than 2 full turns. Thats why I was asking

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •