what prop size do i need?

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

  1. dmcc
    Joined: May 2008
    Posts: 10
    Likes: 0, Points: 0, Legacy Rep: 10
    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:
     
    dmcc, Jun 3, 2008
    #1
  2. Steve H
    Joined: Aug 2004
    Posts: 268
    Likes: 29, Points: 28, Legacy Rep: 332
    Location: S.W. WashingtonState

    Steve H Senior Member

    Does engine rev up?
     
    Steve H, Jun 3, 2008
    #2
  3. dmcc
    Joined: May 2008
    Posts: 10
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Co Tyrone, NI

    dmcc Junior Member

    no , wont rev out just a lot of black smoke.
     
    dmcc, Jun 4, 2008
    #3
  4. Steve H
    Joined: Aug 2004
    Posts: 268
    Likes: 29, Points: 28, Legacy Rep: 332
    Location: S.W. WashingtonState

    Steve H Senior Member

    definetly overpropped. Your current prop is way too big. Should be something closer to 15X18.
     
    Steve H, Jun 4, 2008
    #4
  5. dmcc
    Joined: May 2008
    Posts: 10
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Co Tyrone, NI

    dmcc Junior Member

    thanks steve, what manufactor would you recommend?
     
    dmcc, Jun 4, 2008
    #5

  7. weehenry
    Joined: Jun 2008
    Posts: 45
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: maghery NI

    weehenry Junior Member

    weehenry, Jun 11, 2008
    #6
Loading...
Similar Threads
  1. sandhammaren05

    Side forces: rake effect and prop walk quantified

    sandhammaren05, Feb 2, 2021, in forum: Surface Drives
    Replies:
    3
    Views:
    1,428
    DogCavalry
    Feb 6, 2022
  2. sandhammaren05

    Mathematically-designed and CNC made surface-piercing propeller by McCauleyandson

    sandhammaren05, Aug 5, 2020, in forum: Surface Drives
    Replies:
    6
    Views:
    2,243
    DogCavalry
    May 29, 2022
  3. Tracie Kaneshiro

    What is the difference between impeller and propeller

    Tracie Kaneshiro, Jul 1, 2020, in forum: Surface Drives
    Replies:
    9
    Views:
    5,442
    hoytedow
    Jul 1, 2020
  4. Christian Lucas

    Adjustable propeller pitch for surface pircing propeller

    Christian Lucas, Jun 27, 2020, in forum: Surface Drives
    Replies:
    11
    Views:
    2,914
    Christian Lucas
    Mar 4, 2021
  5. sandhammaren05

    Mathematically-designed prop

    sandhammaren05, Aug 4, 2018, in forum: Surface Drives
    Replies:
    11
    Views:
    2,294
    gonzo
    Aug 8, 2018
  6. Sassriverrat

    S/P prop on a diagonal shaft

    Sassriverrat, Sep 23, 2017, in forum: Surface Drives
    Replies:
    35
    Views:
    4,709
    Sassriverrat
    Oct 9, 2017
  7. OCB

    Rudder propeller drives?

    OCB, Sep 2, 2016, in forum: Surface Drives
    Replies:
    76
    Views:
    18,236
    OCB
    Jan 20, 2017
  8. tom kane

    Surface Propulsion, long-tail-emprovements.

    tom kane, Feb 9, 2016, in forum: Surface Drives
    Replies:
    99
    Views:
    30,039
    Brad T. Miller
    Oct 16, 2020
  9. sandhammaren05

    New formulae for predicting prop diameter, speed, and more

    sandhammaren05, Feb 3, 2016, in forum: Surface Drives
    Replies:
    5
    Views:
    3,527
    sandhammaren05
    Feb 3, 2016
  10. sandhammaren05

    New book ms on surface-piercing props and raceboat design

    sandhammaren05, Jan 30, 2015, in forum: Surface Drives
    Replies:
    25
    Views:
    8,762
    Roflhat
    Oct 27, 2015
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.