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  1. #1
    Cutter's Avatar
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    Who has blown a supercharger??

    Whoever has can you please list as stock or RR & how many hours it lasted.

    Maybe this way we'll know if its worth upgrading.


  2. #2
    Site Admin Green Hulk's Avatar
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    I would not recommend upgrading until your stock clutch fails.

    It is worth upgrading, BUT only if it is built right. It seems the clutch's that fail had 12 ft. lbs. on them. The ceramic just couldn't handle that much stress.

    I think for the correct amount of slipping moment the clutch should be set at 10 newton meters, or about 7.5 ft. lbs, or about 90 inch lbs.

  3. #3
    Cutter's Avatar
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    Hulk have you had a RR cluthch fail???

  4. #4
    Site Admin Green Hulk's Avatar
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    Yes I have, but the clutch slipping moment was set at 12 ft. lbs.

  5. #5
    Cutter's Avatar
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    U put in extra shims?? Did you pull the motor then to get all the peices??

  6. #6
    Jarrett's Avatar
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    Stock SC - 75 hours hard use - no failures

    RR clutch assembly installed incorrectly - failed within 5 minutes

    RR clutch assembly with two shims (probably too tight) - undetermined failure time (<2hours)

    SC rebuilt by Mark Underwood with RR HD parts and HD shaft and no shims - still going after 8 hours or so.

    I'm blaming my first two failures on improper installation. But I have seen others have problems even with professional installation when shims are used. I'm with Jerry. Don't touch the clutch until you abolsutely have to, then have someone with a successful track record of SC rebuilds set it up for you.

    Anyone seen a SC ceramic washer failure that had nothing to do with shims? Bullit is the only one I have heard of.

  7. #7
    Site Admin Green Hulk's Avatar
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    Cutter, yes i had 2 shims installed to get to the 12 ft lbs.
    I did end up pulling my engine and cleaning the PTO housing screen and front scavenger oil pump screen.

  8. #8
    Sunfunzoom's Avatar
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    Stock, did not fail but changed for peace of mind (idiot) 17 hrs
    RR HD Clutch, 2 shims, 5 hrs and poof (with Riva BOV)
    I think the 2 shims add to much pressure, the ceramic discs heat up and fail.
    New RR HD clutch on order from Mark, will not use any shims. Going to run Amsoil 10W40 synthetic with no friction Modifiers.

    If it fails again, selling ski and getting a Kawi STX 15F (Sea-Doo has one last chance with me.)

  9. #9

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    Who do you think will do a good job of instaling the SC Impeller and RR clutch with out posible melt down? I am kind of not wonting to touch it for now but I realy want the Vortex SC impeller. I Hope that installing it with the RR clutch will not cause such a big problem, but it is posible.

  10. #10
    BertInTexas's Avatar
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    55 hours on motor and stock clutch and still running like a champ here.

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