Props

Propeller selection, performance comparison, prediction, experience, and modification.

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  1. SwedenYachtsDaniel

    Prop size help

    SwedenYachtsDaniel, May 6, 2021
    Replies:
    12
    Views:
    2,791
    SwedenYachtsDaniel
    May 9, 2021
  2. enmico

    gearbox ratio calculation

    enmico, Apr 10, 2013 ... 2
    Replies:
    18
    Views:
    15,517
    Adler
    May 7, 2021
  3. Nicholas Castro

    What is the max RPM any propeller can spin before it becomes useless?

    Nicholas Castro, May 3, 2021
    Replies:
    8
    Views:
    5,451
    DogCavalry
    May 6, 2021
  4. Callum Stark

    Kort Nozzle Diameter (19A + Kaplan)

    Callum Stark, Apr 29, 2021
    Replies:
    5
    Views:
    2,818
    comfisherman
    May 1, 2021
  5. Roberto Certain

    Need help gear ratio

    Roberto Certain, Apr 24, 2021 ... 2
    Replies:
    16
    Views:
    3,390
    missinginaction
    Apr 26, 2021
  6. KenSmithFishing

    New video on prop selection

    KenSmithFishing, Apr 24, 2021
    Replies:
    0
    Views:
    1,246
    KenSmithFishing
    Apr 24, 2021
  7. BertKu

    A strange question

    BertKu, Dec 29, 2020 ... 2 3
    Replies:
    38
    Views:
    5,152
    gonzo
    Mar 23, 2021
  8. Chris Drake

    Expert seeking expert to bounce prop design ideas off

    Chris Drake, Jun 12, 2020 ... 2
    Replies:
    20
    Views:
    3,710
    gonzo
    Mar 7, 2021
  9. Astrocat505

    Gear ratio for pedal drive

    Astrocat505, Feb 18, 2021
    Replies:
    11
    Views:
    3,537
    Tiny Turnip
    Feb 24, 2021
  10. Ron Mintle

    Prop for Electric Motor

    Ron Mintle, Feb 13, 2021
    Replies:
    3
    Views:
    1,804
    jehardiman
    Feb 14, 2021
  11. DogCavalry

    Oversized prop compromise

    DogCavalry, Sep 24, 2020 ... 2 3 4
    Replies:
    54
    Views:
    7,078
    DogCavalry
    Feb 12, 2021
  12. DogCavalry

    Propulsive Efficiency related to hub diameter

    DogCavalry, Feb 11, 2021
    Replies:
    12
    Views:
    2,009
    DogCavalry
    Feb 12, 2021
  13. jtpmail

    How can I calculate the Torque needed to start a large prop turning?

    jtpmail, Oct 6, 2018
    Replies:
    13
    Views:
    5,819
    DogCavalry
    Feb 11, 2021
  14. tonipu

    Propulsion for New boat

    tonipu, Jan 20, 2021 ... 2
    Replies:
    20
    Views:
    2,637
    tonipu
    Feb 8, 2021
  15. ldigas

    Gawn Burrill article "Effect of cavitation on..." missing a page - can anyone help?

    ldigas, Jan 22, 2021
    Replies:
    4
    Views:
    1,415
    Mr Efficiency
    Jan 22, 2021
  16. ric243

    Prop Questions

    ric243, Dec 30, 2020
    Replies:
    7
    Views:
    1,728
    missinginaction
    Jan 12, 2021
  17. Daan

    Left handed propeller

    Daan, Sep 20, 2020 ... 2 3
    Replies:
    34
    Views:
    5,274
    brendan gardam
    Dec 5, 2020
  18. chipresistor122

    Need prop recommendation for 20 CC Seacraft

    chipresistor122, Dec 2, 2020
    Replies:
    4
    Views:
    1,605
    missinginaction
    Dec 2, 2020
  19. 7228sedan

    Calulated propeller efficiency

    7228sedan, Nov 5, 2018 ... 2 3
    Replies:
    34
    Views:
    6,621
    7228sedan
    Nov 28, 2020
  20. Walid

    engine-propeller matching

    Walid, Oct 21, 2020
    Replies:
    2
    Views:
    2,447
    Walid
    Oct 22, 2020
  21. kleenbreeze

    I need to find a propeller vendor in the EU

    kleenbreeze, Oct 13, 2020
    Replies:
    2
    Views:
    1,339
    kleenbreeze
    Oct 14, 2020
  22. Solarboat

    Determine pitch along the length

    Solarboat, Jun 22, 2020
    Replies:
    11
    Views:
    2,719
    BlueBell
    Aug 30, 2020
  23. Cajunpockettunnel

    Best prop for pocket tunnel

    Cajunpockettunnel, Aug 23, 2020 ... 2 3
    Replies:
    37
    Views:
    6,707
    Cajunpockettunnel
    Aug 29, 2020
  24. Jason

    DIY Prop

    Jason, Apr 6, 2020
    Replies:
    3
    Views:
    1,566
    jehardiman
    Jul 31, 2020
  25. Solarboat

    How to get the MWR

    Solarboat, Jun 20, 2020
    Replies:
    5
    Views:
    1,990
    jehardiman
    Jun 23, 2020
  26. Luizsbk

    Design Tug Boat propulsion system

    Luizsbk, Jun 21, 2020
    Replies:
    2
    Views:
    1,573
    Luizsbk
    Jun 22, 2020
  27. Solarboat

    Bp-delta Diagram

    Solarboat, Jun 18, 2020
    Replies:
    7
    Views:
    2,683
    Solarboat
    Jun 20, 2020
  28. Will Fraser

    Reynolds number scaling limits for Wageningen B-series

    Will Fraser, May 30, 2020
    Replies:
    5
    Views:
    1,966
    jehardiman
    Jun 1, 2020
  29. Mitch1990

    Propeller Selection using Effective Power

    Mitch1990, May 27, 2020
    Replies:
    10
    Views:
    3,361
    Mitch1990
    May 30, 2020
  30. Mitch1990

    How to find Delivered Power

    Mitch1990, May 29, 2020 ... 2
    Replies:
    25
    Views:
    2,987
    Mitch1990
    May 29, 2020
  31. subhabrata

    Ship-Engine-Propeller Matching

    subhabrata, Apr 12, 2020
    Replies:
    3
    Views:
    1,809
    bit
    May 28, 2020
  32. Nikarus

    Propeller selection for slow robot boat

    Nikarus, May 14, 2020
    Replies:
    14
    Views:
    2,289
    Nikarus
    May 19, 2020
  33. Ben Land

    Propeller test data

    Ben Land, Apr 22, 2020
    Replies:
    6
    Views:
    2,311
    Ben Land
    May 15, 2020
  34. Solarboat

    How to start design of propeller?

    Solarboat, Apr 22, 2020
    Replies:
    14
    Views:
    2,440
    missinginaction
    May 13, 2020
  35. deier

    Please help me with my school project

    deier, Apr 2, 2020
    Replies:
    5
    Views:
    1,335
    johneck
    Apr 16, 2020
  36. Samuel Neves Jocas

    Help with Kort No. 19A/37 Ordinates

    Samuel Neves Jocas, Mar 20, 2020
    Replies:
    1
    Views:
    1,694
    jehardiman
    Mar 20, 2020
  37. Samuel Neves Jocas

    Doubt: 0.7R Pitch and Pitch/Diameter ratio

    Samuel Neves Jocas, Mar 12, 2020 ... 2
    Replies:
    17
    Views:
    6,895
    jehardiman
    Mar 20, 2020
  38. Annode

    Help me get my head around variable pitch prop propulsion design

    Annode, Mar 1, 2020 ... 2
    Replies:
    15
    Views:
    3,212
    bajansailor
    Mar 6, 2020
  39. Mitch1990

    Kaplan Propeller Drawing

    Mitch1990, Mar 2, 2020
    Replies:
    12
    Views:
    3,983
    johneck
    Mar 4, 2020
  40. bateaudemoi

    Voith Schneider Propulsion for Smaller Vessels

    bateaudemoi, Feb 28, 2020
    Replies:
    3
    Views:
    1,820
    bateaudemoi
    Mar 2, 2020
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