Props

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

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  1. 67-LS1

    Prop size calculator

    67-LS1, Jul 22, 2004
    Replies:
    13
    Views:
    67,133
    yipster
    Mar 5, 2005
  2. apex1
    Locked

    The Controllable Pitch Propeller, a summary.

    apex1, Dec 26, 2009 ... 13 14 15
    Replies:
    222
    Views:
    66,064
    TeddyDiver
    Oct 12, 2012
  3. takoateli

    Prop Thrust Calculation

    takoateli, May 31, 2011 ... 2
    Replies:
    25
    Views:
    62,568
    Mick@itc
    Apr 8, 2012
  4. Tiny Turnip

    Propellor for pedal powered catamaran

    Tiny Turnip, Mar 31, 2008 ... 2 3
    Replies:
    41
    Views:
    53,833
    jit89
    Jun 17, 2019
  5. batboat

    Propeller Speed Theory

    batboat, Sep 25, 2005
    Replies:
    9
    Views:
    43,320
    mydauphin
    May 23, 2009
  6. Diamond Cutter

    Is there a simple relationship between prop rpm and boat speed?

    Diamond Cutter, Jan 12, 2012 ... 2
    Replies:
    18
    Views:
    29,570
    johneck
    Feb 24, 2012
  7. mcl

    Propeller testing and reviews mercury vs solas

    mcl, Sep 7, 2018
    Replies:
    0
    Views:
    24,212
    mcl
    Sep 7, 2018
  8. jav

    Inboard Propeller sizing / theory ??

    jav, Nov 8, 2004 ... 2
    Replies:
    22
    Views:
    24,150
    Richard Petersen
    Dec 10, 2004
  9. missinginaction

    The mystery of a proper prop and terrible performance

    missinginaction, Jan 25, 2020 ... 11 12 13
    Replies:
    180
    Views:
    24,000
    Nidza
    Jul 30, 2023
  10. tom kane

    How do propellers propell a boat.

    tom kane, Mar 12, 2015 ... 7 8 9
    Replies:
    126
    Views:
    22,269
    jehardiman
    Apr 27, 2015
  11. Sindel

    Shaft material opinions?

    Sindel, Aug 14, 2009 ... 2 3
    Replies:
    38
    Views:
    21,905
    Yellowjacket
    Aug 21, 2009
  12. DennisRB

    Variable pitch props. Worth it on small boat?

    DennisRB, Nov 30, 2010 ... 2
    Replies:
    17
    Views:
    20,713
    TeddyDiver
    Dec 5, 2010
  13. stratus5

    Diameter Vs Rpm for the new guy

    stratus5, Sep 17, 2005
    Replies:
    8
    Views:
    20,218
    Jango
    Sep 28, 2005
  14. joeforte

    Trolling motor powered surfboard: prop problems

    joeforte, Jul 23, 2007 ... 2
    Replies:
    25
    Views:
    19,921
    penguin78
    Apr 16, 2010
  15. Asleep Helmsman

    Power Required

    Asleep Helmsman, Jan 5, 2010 ... 7 8 9
    Replies:
    133
    Views:
    19,196
    Joakim
    Feb 28, 2010
  16. amaurer

    trolling motor prop rpm?

    amaurer, Sep 27, 2009
    Replies:
    1
    Views:
    18,783
    portacruise
    Sep 28, 2009
  17. Spyderz

    Wageningen B-Series BP-Delta Diagrams Request

    Spyderz, Apr 6, 2011
    Replies:
    9
    Views:
    18,506
    jen2
    Apr 12, 2011
  18. kengrome

    Controllable pitch propellers for small boats ...

    kengrome, Jun 8, 2007 ... 2
    Replies:
    17
    Views:
    18,421
    thudpucker
    Sep 19, 2007
  19. solarguy

    High pitch trolling motor prop for solar boat

    solarguy, Oct 29, 2014 ... 2 3
    Replies:
    34
    Views:
    18,077
    solarguy
    Oct 31, 2014
  20. daiquiri

    Propeller performance vs. shaft inclination

    daiquiri, Dec 9, 2009
    Replies:
    10
    Views:
    17,941
    philSweet
    Jun 12, 2012
  21. RayThackeray

    Prop calculators - is there a difference between electric and diesel drives?

    RayThackeray, Nov 14, 2011 ... 5 6 7
    Replies:
    91
    Views:
    17,749
    tugboat
    Mar 10, 2012
  22. gyrojocky

    Surface Piercing Props

    gyrojocky, Sep 30, 2004 ... 2
    Replies:
    22
    Views:
    17,318
    tom kane
    Dec 10, 2004
  23. Sindel

    a prop's rake

    Sindel, Aug 7, 2009 ... 4 5 6
    Replies:
    75
    Views:
    16,977
    Sindel
    Aug 17, 2009
  24. bblagonic

    prop doing bad

    bblagonic, Oct 24, 2009 ... 3 4 5
    Replies:
    62
    Views:
    16,869
    Joakim
    Jan 27, 2010
  25. terhohalme

    Dimensions of trolling motor prop

    terhohalme, Mar 18, 2017 ... 2
    Replies:
    16
    Views:
    16,759
    terhohalme
    Mar 24, 2017
  26. Duco84

    Propeller size

    Duco84, May 26, 2015 ... 3 4 5
    Replies:
    70
    Views:
    16,346
    Duco84
    Aug 7, 2015
  27. kistinie

    Controllable Pitch Propeller for lower power & electric motors

    kistinie, Jan 2, 2010 ... 2 3
    Replies:
    41
    Views:
    16,274
    powerabout
    Jul 9, 2010
  28. zzerachiel

    B-Wageningen propeller diagrams

    zzerachiel, Jun 1, 2010 ... 2
    Replies:
    21
    Views:
    16,232
    pavel915
    Jun 9, 2010
  29. BertKu

    Turning Clock or anti clock wise

    BertKu, Dec 28, 2012 ... 4 5 6
    Replies:
    78
    Views:
    15,876
    BertKu
    Mar 4, 2013
  30. enmico

    gearbox ratio calculation

    enmico, Apr 10, 2013 ... 2
    Replies:
    18
    Views:
    15,539
    Adler
    May 7, 2021
  31. DennisRB

    Underwater thread sealant?

    DennisRB, Apr 23, 2013 ... 2
    Replies:
    15
    Views:
    15,215
    CDK
    Apr 24, 2013
  32. abohamza

    propeller rotation

    abohamza, Oct 18, 2011
    Replies:
    14
    Views:
    15,165
    abohamza
    Oct 19, 2011
  33. michaeljc

    Prop tip velocity

    michaeljc, Jun 10, 2013 ... 3 4 5
    Replies:
    62
    Views:
    15,065
    gonzo
    Jun 23, 2013
  34. TrustedShips

    Adding Kort nozzle to an existing propeller

    TrustedShips, Feb 6, 2012 ... 2
    Replies:
    16
    Views:
    15,040
    TrustedShips
    Feb 11, 2012
  35. Per S

    Speed/slip problem

    Per S, Jan 4, 2005 ... 2 3
    Replies:
    43
    Views:
    14,878
    ljwhisenant
    Jul 17, 2005
  36. Kvicken

    Diffuser ring experiment

    Kvicken, Oct 6, 2011 ... 2
    Replies:
    22
    Views:
    14,703
    Kvicken
    Oct 18, 2011
  37. sottorf

    Strange Propeller

    sottorf, Sep 17, 2012 ... 2 3
    Replies:
    39
    Views:
    14,616
    Leo Lazauskas
    Dec 11, 2014
  38. Laranjo123

    Bp series propeller chart

    Laranjo123, Oct 21, 2011 ... 2
    Replies:
    15
    Views:
    14,528
    DCockey
    Dec 19, 2011
  39. sailor0000

    Propeller calculations - HELP!

    sailor0000, Dec 27, 2012 ... 2 3 4
    Replies:
    48
    Views:
    13,330
    JSL
    Jan 11, 2013
  40. Hendrickj

    KT KQ J Diagram Wageningen Series

    Hendrickj, May 22, 2012
    Replies:
    8
    Views:
    12,985
    daiquiri
    Mar 13, 2013
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