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  1. #1
    suck my wake's Avatar
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    Tweeking the 15/19

    For those of you that have a 15/19R and have had to tweek it, did you have to add or take away some pitch to achive your desired RPM's and also what RPM's are you guys running these props at?


  2. #2
    Site Admin Green Hulk's Avatar
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    That all depends on which supercharger you're running.

    Rude Chargers i add pitch.

    Anything less i decrease pitch.

    These impellers really like a solid 8500 with an occasional flash of 8550

  3. #3
    suck my wake's Avatar
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    Jerry I ran it out of the box with the 81mm ring and could only get 8400 and 80 mph so I decreased the pitch (2mm) and had to run the 82mm ring to keep it off the limiter but could only get 78 mph. I was thinking of adding a little pitch (1mm)from the way it came and giving it another shot. I like the hole shot with this prop but so far I had better top speed with the 15/20. Any recomendations???

  4. #4
    FIRED!!! JP's Avatar
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    Quote Originally Posted by suck my wake View Post
    Jerry I ran it out of the box with the 81mm ring and could only get 8400 and 80 mph so I decreased the pitch (2mm) and had to run the 82mm ring to keep it off the limiter but could only get 78 mph. I was thinking of adding a little pitch (1mm)from the way it came and giving it another shot. I like the hole shot with this prop but so far I had better top speed with the 15/20. Any recomendations???
    I DOO!!!
    Sell JP that 15/20 cheap, you don't need it...

    JP

  5. #5
    suck my wake's Avatar
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    Nice try JP It will just slow you down

  6. #6
    About time you got that prop! How is the whole shot? I never did ask you that! What part is next?

  7. #7
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    I'll take the 15/20....$150

  8. #8
    Moderator The Bandit's Avatar
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    Quote Originally Posted by suck my wake View Post
    Jerry I ran it out of the box with the 81mm ring and could only get 8400 and 80 mph so I decreased the pitch (2mm) and had to run the 82mm ring to keep it off the limiter but could only get 78 mph. I was thinking of adding a little pitch (1mm)from the way it came and giving it another shot. I like the hole shot with this prop but so far I had better top speed with the 15/20. Any recomendations???
    Did you try it with the 81 ring?
    1mm and 81 ring

  9. #9
    suck my wake's Avatar
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    Quote Originally Posted by RXP Steve View Post
    Did you try it with the 81 ring?
    1mm and 81 ring
    (Jerry I ran it out of the box with the 81mm ring )

    Yep I ran the 81mm ring. I am still tuning this prop, I will tinker with it till I find the right combo but not so sure its got a strong top end

    Sorry Danny neither one is for sale.............yet

  10. #10
    I wouldn't spend too much time dialing that prop in right now. You will loose 200 rpm when it gets hot out. Last year I ran the Skat 15/19 in the Spring/Fall and had to run a 15/18.5 in the Summer when it got hot. Both with the 82 mm ring. You can't beat the hole shot and acelleration of the 3 blades. I found a boost leak that I didn't know I had, which I have repaired and I added the Riva rear air intake and wedge. Also put in the Riva 15/19, which is not exactly a 15/19. Ski is ready to test, hopefully in the next few days.

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