what prop size do i need?

Discussion in 'Surface Drives' started by dmcc, Jun 3, 2008.

  1. dmcc
    Joined: May 2008
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    Location: Co Tyrone, NI

    dmcc Junior Member

    hello everyone,
    can any one tell me what prop size i should have?
    my brother has a 26ft searay 1.5 ton, 19ft on water line powered by a 315hp yanmar with a direct drive zf marine box
    it has a fixed surface drive "lancing marine" he has tried 19x23 hamble prop but cant get on the plane. :confused:
     
  2. Steve H
    Joined: Aug 2004
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    Location: S.W. WashingtonState

    Steve H Senior Member

    Does engine rev up?
     
  3. dmcc
    Joined: May 2008
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    Location: Co Tyrone, NI

    dmcc Junior Member

    no , wont rev out just a lot of black smoke.
     
  4. Steve H
    Joined: Aug 2004
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    Location: S.W. WashingtonState

    Steve H Senior Member

    definetly overpropped. Your current prop is way too big. Should be something closer to 15X18.
     
  5. dmcc
    Joined: May 2008
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    Location: Co Tyrone, NI

    dmcc Junior Member

    thanks steve, what manufactor would you recommend?
     

  6. weehenry
    Joined: Jun 2008
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    Location: maghery NI

    weehenry Junior Member

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