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  1. #1
    Chupacobra's Avatar
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    Finding Good Prop Pitch to Begin

    First off I do not have a Tach and will not have one for a while.
    The ski is out of the water for some paint so no way of testing.
    I'd like to find a "ballpark" pitch to begin and then go on from there.

    The current prop is wayy too much for this little 1200, Its a 14/24 Dynafly. I'm thinking of starting off with a 13/20-21. Last time I was out with the ski it ran 69.4 with almost no plate angle, riva sponsons on the down position, and trim tabs shimmed 4.2mm. I have the ski set up for mostly handling as you see. The Goal is 72-73 with great handling.


    Mods are..
    Flame Arrestors
    Carbs Rejetted
    FF
    PPK
    HO pump
    14/24
    Riva Plate
    Riva Sponsons
    Riva Trim Tabs
    Stinger 3
    Top Loader Intake Grate
    Stock Uncut Head

    Just purchased a Speedwerx head but have done no testing with this set up. The stock gasket was letting some water in so I'm sure that slowed me down a bit too


  2. #2
    Happily Self-Employed WFO's Avatar
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    A 20-21 will most likely still be too big.

    What size exit nozzle?

  3. #3
    Chupacobra's Avatar
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    I want a little room to grow as well thats why I thought a 20-21 would be best.

    Stock exit nozzle

  4. #4
    Happily Self-Employed WFO's Avatar
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    Quote Originally Posted by Chupacobra View Post
    I want a little room to grow as well thats why I thought a 20-21 would be best.

    Stock exit nozzle
    stock is 87mm

    try a 14/20 Dynafly

    you need a tach tho

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  6. #5
    Chupacobra's Avatar
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    Wouldn't a 13 load the pump up better?

  7. #6
    Happily Self-Employed WFO's Avatar
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    Quote Originally Posted by Chupacobra View Post
    Wouldn't a 13 load the pump up better?
    no, 14 leading loads more water

  8. #7
    Chupacobra's Avatar
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    Quote Originally Posted by WFO View Post
    Quote Originally Posted by Chupacobra View Post
    Wouldn't a 13 load the pump up better?
    no, 14 leading loads more water
    Sorry for not wording it right. Will the 13 be better for loading the pump up quicker while or after a corner and also from a dig?

  9. #8
    Happily Self-Employed WFO's Avatar
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    Quote Originally Posted by Chupacobra View Post
    Quote Originally Posted by WFO View Post
    Quote Originally Posted by Chupacobra View Post
    Wouldn't a 13 load the pump up better?
    no, 14 leading loads more water
    Sorry for not wording it right. Will the 13 be better for loading the pump up quicker while or after a corner and also from a dig?
    the bigger the leading edge, the better the holeshot

  10. #9
    Chupacobra's Avatar
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    Thank you for all the knowledge!

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