Thread: Predator 420

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    Re: Predator 420
    #11
    J.M. Action Figure flyerrider's Avatar
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    Quote Originally Posted by darwinpayne2000 View Post
    .
    The final option is to purchase an adapter that allows you to run a 30 mm tapered clutch. That allows you to grab a set of used Polaris clutches off of Ebay for your build.
    Have a source for this adapter? I'm planning on using the same engine for my son's two seater kid's buggy next year.
    Over complicating mini buggies since 2005

    Certified lazy fabricating laser junkie

    K-Fab Says: Don't ride with me - I flip stuff like RZRs and myself over the bars...
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    Re: Predator 420
    #12
    Senior Member Jerm's Avatar
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    I have used this with a polaris clutch, it fits.
    Tapered Clutch Shaft Adapter - 1"
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    Re: Predator 420
    #13
    Senior Member darwinpayne2000's Avatar
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    There are two setups when using the Polaris clutches.

    The ATV driver/driven clutches are a smaller diameter than the snowmobile clutches. The ATV driven clutch is a splined shaft, so it typically works best with the ATV FNR transmission. The snowmobile driven clutch, at least on the older Polaris models, uses a 1" keyed shaft.

    The driver clutch from a Polaris Trailboss/Trailblazer with the 250/330/335 engine would have a spring and weight setup that would work well with your engine. The Polaris snowmobile clutches are configured for engines with more horsepower, so you would want to swap out the springs and weights with a lighter setup.

    Good luck on your build.
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    Re: Predator 420
    #14
    Senior Member Jerm's Avatar
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    Darwin is correct, he has alot of good information on this topic.
    I found that you will need a weak spring on the drive clutch, its the black spring. Also on the driven clutch I was told the Red spring. Both are weak, because the RPM of the 4stroke industrial engines is not as high as the Polaris ATV or Sled that it came off of. So a weaker spring gets it to open sooner at the lower RPM's. Perfect for the industrial style engines.
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    Re: Predator 420
    #15
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    So for a snowmobile clutch I would need an adapter for tapered shaft to straight shaft and for atv clutch an adapter for splined shaft to straight shaft?
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    Re: Predator 420
    #16
    Senior Member Jerm's Avatar
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    No, both clutches are tapered, you need the tapered adapter for either a snowmobile or ATV primary clutch.
    Use a Polaris forward/neutral/reverse gearbox from any of the polaris ATV's, the secondary clutch is mounted right to the gearbox and it has a sprocket on it for output. It is an ideal setup for that engine. Then ues the matching polaris primary clutch on the engine.
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    Re: Predator 420
    #17
    Millenium Member Lug-Nuts's Avatar
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    So?

    How is the build coming along?

    Pics?
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    Re: Predator 420
    #18
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    I'm finishing up a few things and starting to paint. I'll get some pics soon.
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    Re: Predator 420
    #19
    Millenium Member Lug-Nuts's Avatar
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    Nice, Im thinking about sand blasting mine and re-painting.

    Maybe next year
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