Quantcast

Seperating spring rate and damping

Discussion in 'Downhill & Freeride' started by Kornphlake, Sep 7, 2005.

  1. Kornphlake

    Kornphlake Turbo Monkey

    Rep/Likes:
    3 / 0
    Joined:
    Oct 8, 2002
    Messages:
    2,639
    Location:
    Portland, OR
    I suppose I could sell this idea to some company and make more money than DW (as if that were a lot,) but I'm not really sure it's an advantage...

    The idea is to ditch coil over springs wrapped around the damper and put the spring somewhere else, use leaf springs, torsion springs, whatever's clever but put it on some linkage so that it optomizes the spring rate, now put the damper in some other location so that the damping rate isn't tied directly to the spring rate. It seems like you could take a bike like a RM 7 with an insanely high spring rate and move the damper to a seperate linkage to lower the damping rate and reduce blown shocks but keep the same suspension feel.

    Would this work? Has it already been done?
     
    #1 -   Sep 7, 2005

    Please register to disable this ad.

  2. scottishmark

    scottishmark Turbo Monkey

    Rep/Likes:
    16 / 20
    Joined:
    May 20, 2002
    Messages:
    2,123
    Location:
    Somewhere dark, cold & wet....
    Scott DH bike from a few years back (well '99 ish) had a seperate springing and damping unit. They both looked like damper but supposedly the spring one was just a hollow tube, and the damper itself was just a normal shock without a spring. And for whatever reason, those bikes made an awful noise!
     
    #2 -   Sep 7, 2005
  3. dw

    dw Wiffle Ball ninja

    Rep/Likes:
    6 / 0
    Joined:
    Sep 10, 2001
    Messages:
    2,944
    Location:
    MV
    Its really not necessary with a shock and leverage rate progression that are tuned to work together. The trick is knowing what to do to make them work together.

    I have apicture of that Scott bike somewhere. It also had an adjustable HT angle. Definitely a cool bike to look at.

    dw
     
    #3 -   Sep 7, 2005
  4. scottishmark

    scottishmark Turbo Monkey

    Rep/Likes:
    16 / 20
    Joined:
    May 20, 2002
    Messages:
    2,123
    Location:
    Somewhere dark, cold & wet....
    crazy moto seat option too iirc. ws one of those bike that made you stop n stare at the time though (and probably still would)
     
    #4 -   Sep 7, 2005
  5. dw

    dw Wiffle Ball ninja

    Rep/Likes:
    6 / 0
    Joined:
    Sep 10, 2001
    Messages:
    2,944
    Location:
    MV
    yeah, totally. It made me stop and look. and think.
     
    #5 -   Sep 7, 2005
  6. Nately27

    Nately27 Monkey

    Rep/Likes:
    0 / 0
    Joined:
    Jul 29, 2003
    Messages:
    121
    i.e. this motorcycle:

    I believe they designed this motorcyle to have a falling shock rate, to increase compliance at excessive lean angles, and a rising spring rate, or at least linear. although I could be mistaken, its been a while since ive read the articles.
     
    #6 -   Sep 7, 2005