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  1. #1
    mrbtd's Avatar
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    Which 13/19 for an 05 pump ?

    I have a 14/20 now and having a little trouble turning it. Which 13/19 do I need ? I only see 13/19 options for the 2000-2004 GPR's.
    Last edited by mrbtd; 05-21-2007 at 11:11 AM. Reason: ...


  2. #2
    My son (mohawk man) jeffsntx's Avatar
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    I dont think they make one. Have someone bend the stock prop until you get in your desired RPM range.

    Which nozzle are you using, and what are the RPM's? What mods? Need more info.
    Last edited by jeffsntx; 05-21-2007 at 11:22 AM.

  3. #3
    African-American
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    Get it re-pitched, thats was cheaper than buying a new one.

    Contact impros.

  4. #4
    My son (mohawk man) jeffsntx's Avatar
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    Quote Originally Posted by spaceman View Post
    Get it re-pitched, thats was cheaper than buying a new one.

    Contact impros.
    You cant de-pitch a dynafly, it decreases the OD.

  5. #5
    You can't de-pitch the 14/20 dynafly but you can go to a larger nozzle. If you're using an 85mm nozzle go up to an 87.

  6. #6
    African-American
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    I didnt think so .....,i know you have to have the prob cut when u pitch up.

    However i just took what i learned from this post:

    http://greenhulk.net/forums/showpost...09&postcount=6
    Quote Originally Posted by SUCKMYWAKE View Post
    do they have a 13/19 for the 05's and up? it would have to be a dynafly depitched. i trust joe on this one

  7. #7

  8. #8
    Chrisrokc's Avatar
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    Please compare this to a 14/20 DY RPM wise.

    Thanks

  9. #9
    philip_gpr's Avatar
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    rpms will be slightly higher

    much better low and mid - ideally suited for a stock 1200 / 1300 motor

    top end will be slightly slower

    much better impeller for a stock motor than a Dynafly which is too much impeller for a stock motor - ski is sluggish with the Dnafly

  10. #10
    Happily Self-Employed WFO's Avatar
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    Quote Originally Posted by philip_gpr View Post
    rpms will be slightly higher

    much better low and mid - ideally suited for a stock 1200 / 1300 motor

    top end will be slightly slower

    much better impeller for a stock motor than a Dynafly which is too much impeller for a stock motor - ski is sluggish with the Dnafly
    If I am reading the letters right, thats a large hub Concord prop.

    Phillip, have you used one of these yet ?

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