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  1. #1
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    Super low compression ratio frame

    This is just wishful thinking as I cant afford it but would it be possible to build a frame with a 1:1 compression ration and 5" travel using a curnutt dh shock also with 5" travel?
    The reason I ask is I am a super Clyde and need a low compression ratio
    Thanks!
    "you must do what you feel is right of course"

  2. #2
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    Yep. Look at an Ellsworth frame, and imagine shifting the pivot-point of the lever-arm rearward on the arm (or making the distance of the lever-arm in front of the pivot -on the shock side of the arm- longer). This isn't the only way you could accomplish this, but it's an easy-to-picture example of how suspension-to-shock leverage can be manipulated.

    I don't know what your cost-limitations are (e.g. can't afford a new frame; can't afford a used frame; can't afford a jig, tube notcher, welder, etc to build it yourself), but you could probably find a used Ellsworth and make custom lever-arms to test out different shock compression ratios.

  3. #3
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    You blow up coil over external reservoir DH shocks? Because that's what I would use. 1:1 is going to be crazy hard to pull off and will limit you to 2.5" travel unless you find an old 9x3 shock around somewhere.

    Even for a hyper-Clyde 2:1 should be ok unless you are hucking huge stuff, as long as you've got a burly coil shock on there.

    -Walt
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  4. #4
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    As I stated in the post,I would use a curnutt dh shock with 5" travel.

    An it was only a pipedream.i do fine with the 2:1 ratio on my FOES!

    EDIT: There are other reasons to make a 1:1 frame other than for hyperclydes
    A)pedaling platforms such as are found in curnutt shocks are more effective
    B)less strain is put on individual frame components such as shock mounts
    Last edited by fxrextreme; 02-03-2016 at 08:38 PM.
    "you must do what you feel is right of course"

  5. #5
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    Id love it if FOES saw this and liked the idea!
    "you must do what you feel is right of course"

  6. #6
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    Wouldnt stiction (even on a coil shock) be much more noticeable at 1:1? I suppose the feeling could be negligible, especially being used to air shocks as mountain bikers, but something to think about.

    I think some early motorcycles had close to 1:1 ratios, but I'm not sure where damper technology was at that point.

    Can you get your hands on a 5" travel curnutt?

  7. #7
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    The problem I see is that the damping circuits of shocks are typically designed to work at 2:1 to 3:1 ratio. Going down to 1:1 would make the action of the shock very sluggish. Maybe the 5" Curnutt is intended to be used at 1:1 or close to it? Or, maybe being a big guy (superclyde, as you put it), would apply enough force to the shock to help it act more "normal." Though it might still be sluggish in rebound.

  8. #8
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    The 5" travel curnutt is designed to be used at 2:1 but is able to be tuned extensively so I believe it could be made to work.getting hold of one would not be impossible but as I said before this is just an idea I have been running around in my head.
    I would definitely have it made if funds allowed though!
    "you must do what you feel is right of course"

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