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Help me understand secondary springs

This is a discussion on Help me understand secondary springs within the CVT, Sheaves & Wet Clutch forums, part of the Yamaha Wolverine Gen 1 708 cc SxS category; I put a Hunterworks sheave, slugs and clutch kit on my wolverine (27" Bearclaws), and am trying to figure out what changes the secondary spring ...

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Thread: Help me understand secondary springs

  1. #1
    Pavement Princess
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    Help me understand secondary springs

    I put a Hunterworks sheave, slugs and clutch kit on my wolverine (27" Bearclaws), and am trying to figure out what changes the secondary spring make.
    I have the purple spring and 16gr. weights. I have been seeing things about guys running the green spring, but Hunterworks says its more for the Viking. What differences will you notice with a green or a gold spring? (are they stiffer?) What kind of riding is benefitted from green or gold springs? I am in eastern Pennsylvania and generally ride rocky trails in the coal region. I am just trying to better understand how these cvt's work and how changing components will affect them. Thanks in advance for any input.

  2. #2
    Super Moderator MassiveOverkill's Avatar
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    Increasing secondary spring pressure generally keeps your CVT in a lower gear ratio longer and lowering it allows it to shift out quicker. Guys who are mudders, running big tires, or hauling heavy loads will run a heavier spring. More pressure or too much can lead to increased belt wear and not enough can cause your belt to slip. Primary roller weights also have the same affect with lighter roller weights acting like a heavier secondary spring while heavier roller weights will shift out quicker.

    On Gen 1's, you have some RPM headroom to run a slightly heavier spring AND lighter weights without the RPM limiter holding you back. X2/X4 is a different beast.
    MORSNO likes this.
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  3. #3
    Pavement Princess
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    Thanks, that helps me understand it better
    MORSNO likes this.

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