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  1. #1
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    Spring size, Gemini 3000, Swinger 4 way

    Looking for the size of the spring, currently have a 600x2.0 spring and want a softer one but need the spring size, anyone out there knows?

  2. #2
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    I am confused.

    Quote Originally Posted by DiRt DeViL
    Looking for the size of the spring, currently have a 600x2.0 spring and want a softer one but need the spring size, anyone out there knows?

    The Gemini can run a 2" or 2.25" stroke, in the 7.875" length.

    The spring that you have is a 600lb spring for a 2" stroke shock, so you may need a 550x2.0 spring. However, I wonder what stroke the shock is now.
    gfy

  3. #3
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    If by stroke you mean the travel setting I'm running it at 170mm.

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    not quite.

    I am talking about the amount of shaft travel in the shock itself. The spring second # is the stroke. If it is indeed a 2" stroke shock that you have, you are NOT getting 140, 150 and 170mm of travel, (those settings based on a 2.25" stroke) You are getting about 13% less travel than that across the board.

    Did you buy the bike new?
    gfy

  5. #5
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    No, it was second hand.

    So to get the whole travel I would need a 2.25" stroke spring? Meaning that to soften the suspension I should get something around 450 to 500 x 2.25.

    The bike is a 2004 Euro version Gemini 3000, not exactly as pictured but the frame is the same.


    Mine is medium.
    Gemini Geometry Chart* Small Medium Large X Large
    Seat Tube Angle (degrees) A 71 70.5 70.5 70
    Head Tube Angle (degrees) B 67 67 67 67
    Horizontal Top Tube Length - Horizontal (cm) C 57.5 60 62.5 65
    Horizontal Top Tube Length - Actual (cm)** 53.1 55.7 59 62.8
    Seat Tube Length to Top (cm) D 40.5 43 48 53
    Chainstay Length (cm) E 43.2 43.2 43.2 43.2
    Bottom Bracket Height (cm) G 36.3 36.3 36.3 36.3
    Wheelbase (cm) H 109.2 111.5 114.5 116.8
    Trail (cm) I 9.6 9.6 9.6 9.6
    Standover Height (cm) J 72.4 73 73.3 75.4
    Bottom Bracket Drop (cm) K -2 -2 -2 -2
    Front-Center Distance (cm) L 66.4 68.7 71.5 73.8
    Fork Crown Height (cm) 53 53 53 53
    Fork Rake (cm) 4.6 4.6 4.6 4.6
    Rear Travel (cm) 15-17 15-17 15-17 15-17
    Shock Eye-to-Eye (cm) 20 20 20 20
    Shock Stroke (cm) 5.7 5.7 5.7 5.7
    Recommended Sag 30% 30% 30% 30%
    Last edited by DiRt DeViL; 09-02-2008 at 11:59 AM.

  6. #6
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    Hold on...

    You need to remove the shock from the bike, remove the spring, and measure the stroke of the shock. Measure eye to eye fully extended, and fully compressed. The specs above say the shock should be a 2.25", but you have a spring that is for a 2".
    gfy

  7. #7
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    It does have a 2" installed but that doesn't mean that the previous owner knew what he was doing when he changed the spring for a heavier one.

    All I need is the right info to get a softer spring and off course get the right one.

  8. #8
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    no kidding.

    You still need to know the stroke of the shock. It is possible that you had a spring that was too short, causing binding at full travel. If you are comfortable that the spring and shock are sized together, order a 550x2.0 or a 500x2.0. Personally, I would take a few minutes and find out what the stroke is. Hell, it will take less time that I have spent trying to help you.
    gfy

  9. #9
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    The help is very appreciated, the stroke is the difference between the eye to eye when fully extended and compressed?

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    Right.

    And the spring is needed is usually marked as slightly longer . Hope that helps.
    gfy

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