2-disk clutch vs 3-disk clutch

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This topic contains 4 replies, has 3 voices, and was last updated by  tony zambos 1 year, 4 months ago.

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  • December 7, 2017 at 8:58 am #89185

    Bob Spedding
    Participant

    Was wondering what your thoughts are for running a 3-disk clutch for a Yamaha sr.y-pipe class?  I haven’t seen of any competitor running one but had a tuner tell me that’s what they use and recommend.

    Any thoughts?

  • December 7, 2017 at 9:04 am #89186

    David Cole
    Keymaster

    I was under the impression that 3-disc provided better performance, and maybe more longevity for the clutch.

    David Cole - EKN Managing Editor

  • December 7, 2017 at 12:24 pm #89190

    Bob Spedding
    Participant

    Interesting.  David, any idea why most people I’ve seen run a 2-disk in our class? The guy I talked to said the 3disk was better at both performance and longevity. As you stated.

  • December 7, 2017 at 1:04 pm #89193

    David Cole
    Keymaster

    2-disk was designed for the lower horsepower Yamaha Can. The Yamaha Pipe has more horsepower, obviously. My guess as to why they run the 2-disc is because it is more readily available, or they use it when switching to Can. I would contact your engine builder to get their advice. My guess is horsepower related.

    David Cole - EKN Managing Editor

  • December 7, 2017 at 10:15 pm #89199

    tony zambos
    Participant

    The 2-disk is OK for a jr canned Yamaha. For a Yamaha senior with a pipe, I’d go with a 3-disk, six spring. I know that’s more rotating mass, but I believe that it’s easier to adjust, will hold that adjustment and there will be fewer head aches.

    LAD Specialties customer / tony kart / rotax / kt100

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