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  1. #1
    lextoy's Avatar
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    3 blade SKAT vs. 4 blade SOLAS

    in a stock RXP which one would perform how??
    any reason to choose one over the other??


  2. #2
    West Texas RXP skoepp's Avatar
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    I say 4 blade for sure on stock. Just what i prefer.

    IMO, to get a 3 blade perform you need some HP.
    3 blade is a dog on top without alot of ponnies.

  3. #3
    Moderator Snoman's Avatar
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    Quote Originally Posted by lextoy View Post
    in a stock RXP which one would perform how??
    any reason to choose one over the other??
    A 3 blade will give you better hole shot..
    A 4 blade will give you better top end...

  4. #4
    I think ı'm going to buy 4 impeller skat trak. and ı remember that my ski never cavitates. so should ı buy 4 impellers? because you asked me something about cavitation and ı remembered, ıt don't cavitates.

  5. #5
    ROTAX RACING performance
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    seadoo lover you have 155 HP , there will never be cavitation !!!, you can try the 10/21 SKAT TRAK

  6. #6
    Quote Originally Posted by mrracing View Post
    seadoo lover you have 155 HP , there will never be cavitation !!!, you can try the 10/21 SKAT TRAK
    True, as long as you keep the rocks out of the pump.

  7. #7
    ou812's Avatar
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    13/18 3 blade for stock setup works very well.
    But both the 13/18 3 blade & 14/19 4 blade needs an air intake & riva grate to get some better #'s.

    4 blade will be faster on top but the 3 blade will get you there faster before it tops out.

  8. #8
    lextoy's Avatar
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    jetlover, remember some of these guys are talkin about impellers for the bigger engine RXP215 and RXPX255. you have to make sure you get the impeller pitch for a RXP155.
    MRRACING, are you sure that 10/21 is for a rxp155?? i checked the charts at SkatTrak and i think the 10/21 is a 4 blade for the larger diameter (215 housing) and the bigger engine. and it would also then not mate up with the 155's shaft...
    just double checking.

  9. #9
    lextoy's Avatar
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    Quote Originally Posted by ou812 View Post
    13/18 3 blade for stock setup works very well.
    But both the 13/18 3 blade & 14/19 4 blade needs an air intake & riva grate to get some better #'s.

    4 blade will be faster on top but the 3 blade will get you there faster before it tops out.
    ou812, you are talkin 215 hp RXP correct? i'm trying to help out jetlover who workin on a 155. the theory of 3 blade vs 4 blade is good, but i dont want him to get confused on which impeller to get cuz hes got a 155, and he's in turkey, so its expensive shipping and dont want him to have to return it!!!

  10. #10
    lextoy's Avatar
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    cavitation has nothing to do with 3 blades or 4 blades. it has to do with the wear ring and impeller, if they are damaged or not. when you buy an impeller , get a new wear ring at the same time.

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