Propulsion

Discuss marine engines, drives, and propulsion systems.

  1. Props

    Propeller selection, performance comparison, prediction, experience, and modification.
    Discussions:
    536
    Messages:
    6,282
    Latest: Thoughts on prop load for com-fish/tow boat comfisherman, Apr 26, 2024 at 1:20 AM
    RSS

  2. Surface Drives

    Surface Drives. Arneson, BPM, Seafury, PSI, Levi, Etc.
    Discussions:
    186
    Messages:
    2,860
    Latest: Longtail Evolution Dave G 9N, Jan 20, 2024
    RSS

  3. Jet Drives

    Jet Drives (pumps, impellers, etc.)
    Discussions:
    461
    Messages:
    4,433
    Latest: need intake or picture of for (berk)6jA Ike, Apr 25, 2024 at 1:05 AM
    RSS

  4. Outboards

    2-stroke and 4-stroke outboard motors.
    Discussions:
    1,029
    Messages:
    9,902
    Latest: How many adjustment points are there on a 1999 25 hp carb? valvebounce, Feb 27, 2024
    RSS

  5. Sterndrives

    Stern drive lower and upper units, transom and gimbal assemblies, steering, and trim pumps. Mercruiser (Alpha One, Alpha One Generation II, Alpha SS, Bravo One, Bravo Two, Bravo Three, Bravo XR Sportmaster, TRS, Speed Master), IMCO, ILMOR, Konrad, OMC, Volvo Penta
    Discussions:
    547
    Messages:
    3,828
    Latest: Welded metal belows - would that work for sterndrive? Nidza, Oct 20, 2023
    RSS

  6. Pod Drives

    Volvo IPS, ZF, CMD Zeus, and other pod-drive systems
    Discussions:
    29
    Messages:
    299
    Latest: 50-200 hp electric pod with nozzle and motor on hub? ram68ocean, Jul 5, 2021
    RSS

  7. Inboards

    Inboard and Vee-drive hardware: struts, stuffing boxes, transmissions, coolers
    Discussions:
    535
    Messages:
    4,968
    Latest: Use oversized flexible coupling? comfisherman, Mar 9, 2024
    RSS

  8. Diesel Engines

    Diesel Engines
    Discussions:
    682
    Messages:
    8,498
    Latest: Hino WO4CTI in a 26' Tollycraft David Swingler, Mar 22, 2024
    RSS

  9. Gas Engines

    Gasoline Engines
    Discussions:
    422
    Messages:
    4,650
    Latest: starting rebuild engine comfisherman, Aug 31, 2023
    RSS

  10. Electric Propulsion

    Electric propulsion systems
    Discussions:
    99
    Messages:
    1,952
    Latest: ask for help in Converting a propulsion system for a tugboat to a fully electric Rumars, Apr 9, 2024
    RSS

  11. Hybrid

    Hybrid propulsion such as diesel electric, hydraulic.
    Discussions:
    211
    Messages:
    5,256
    Latest: Hydrogen Fuel cells for ships DogCavalry, Jan 3, 2024
    RSS

  12. DIY Marinizing

    A forum to discuss "do it yourself" marinizing of engines / conversion of automotive engines to marine use.
    Discussions:
    276
    Messages:
    5,576
    Latest: New Detroit Diesel Marinization Chris Konrad, Feb 14, 2024
    RSS
Page 4 of 25
Sort By:
Title Start Date
Replies Views
Last Message ↓
  1. Brian.Lin

    dual main engine a single output

    Brian.Lin, Mar 30, 2016 ... 2
    Replies:
    16
    Views:
    4,811
    powerabout
    Apr 2, 2016
  2. tom kane

    Better than a Pocket or Tunnel?

    tom kane, Jan 10, 2016
    Replies:
    6
    Views:
    3,461
    tom kane
    Mar 20, 2016
  3. AnthonyW

    Flapping fin propellor - University of Oxford

    AnthonyW, Sep 8, 2015
    Replies:
    14
    Views:
    6,372
    Rastapop
    Mar 16, 2016
  4. Danob

    Corrisionx vs CRC

    Danob, Feb 21, 2016
    Replies:
    2
    Views:
    3,731
    Danob
    Mar 7, 2016
  5. liam@liamcurtin

    pump piston powered boat

    liam@liamcurtin, Feb 11, 2016 ... 2 3
    Replies:
    36
    Views:
    6,584
    Steve W
    Feb 19, 2016
  6. Danob

    Fuel additives

    Danob, Dec 31, 2015 ... 2
    Replies:
    22
    Views:
    6,100
    whitepointer23
    Jan 3, 2016
  7. jtrott

    inboard to outboard convert houseboat

    jtrott, Dec 20, 2012
    Replies:
    7
    Views:
    9,348
    gonzo
    Dec 23, 2015
  8. rich99uk

    CV Joints replacment on Python Drive

    rich99uk, Dec 23, 2015
    Replies:
    0
    Views:
    2,838
    rich99uk
    Dec 23, 2015
  9. Leverage41

    Repowering 1952 18' Palmer Scott

    Leverage41, Dec 16, 2015
    Replies:
    0
    Views:
    2,588
    Leverage41
    Dec 16, 2015
  10. tom kane

    Conytrapel Propulsion

    tom kane, Nov 9, 2015 ... 2
    Replies:
    18
    Views:
    6,161
    tom kane
    Nov 17, 2015
  11. tinpin4544

    Trolling motor issues/question

    tinpin4544, Nov 9, 2015
    Replies:
    7
    Views:
    3,245
    lance linked
    Nov 13, 2015
  12. charlief1

    DIY human powered drive and prop design

    charlief1, Oct 1, 2015 ... 2
    Replies:
    22
    Views:
    18,911
    charlief1
    Oct 16, 2015
  13. ssawasare

    cantilever beam method

    ssawasare, Oct 14, 2015
    Replies:
    0
    Views:
    2,137
    ssawasare
    Oct 14, 2015
  14. suprathepeg

    Outboard or Jet Ski power?

    suprathepeg, Oct 10, 2015
    Replies:
    4
    Views:
    4,501
    suprathepeg
    Oct 12, 2015
  15. stonedpirate

    Inboard outboard?

    stonedpirate, Sep 6, 2015 ... 2
    Replies:
    29
    Views:
    5,499
    Rurudyne
    Sep 8, 2015
  16. marsh trapper

    technodrive tmc 60 gearbox fluid check.?

    marsh trapper, Aug 26, 2015
    Replies:
    1
    Views:
    2,753
    CDK
    Aug 27, 2015
  17. Darien

    Tropical flooding rivers... please help me.

    Darien, Aug 14, 2015 ... 2
    Replies:
    29
    Views:
    5,558
    Darien
    Aug 17, 2015
  18. Edolyi

    Propulsive efficiency and propeller depth relationship

    Edolyi, Jul 25, 2015
    Replies:
    9
    Views:
    5,697
    Edolyi
    Jul 26, 2015
  19. xxdroom

    paddlewheeler recuction drive

    xxdroom, Oct 30, 2014 ... 5 6 7
    Replies:
    104
    Views:
    19,272
    JSL
    Jul 11, 2015
  20. brian eiland

    Fuel from Seawater

    brian eiland, Apr 10, 2014
    Replies:
    5
    Views:
    3,900
    brian eiland
    Jul 3, 2015
  21. NAVMAR

    foundation metal chocks-[weld liners,shims]

    NAVMAR, Jun 19, 2015
    Replies:
    0
    Views:
    3,673
    NAVMAR
    Jun 19, 2015
  22. Hotz

    Baffled - grey/milky oil

    Hotz, Jun 4, 2015
    Replies:
    11
    Views:
    5,576
    Hotz
    Jun 7, 2015
  23. YotaTruck

    Electric outboard for 20' x 6' flat bottom skiff?

    YotaTruck, May 24, 2015
    Replies:
    2
    Views:
    3,041
    Jamie Kennedy
    Jun 3, 2015
  24. Tiny Turnip

    Electric ferry in operation

    Tiny Turnip, May 21, 2015
    Replies:
    0
    Views:
    2,745
    Tiny Turnip
    May 21, 2015
  25. srinath88

    torpedo propulsion

    srinath88, May 20, 2015
    Replies:
    10
    Views:
    5,127
    gonzo
    May 21, 2015
  26. boarding bob

    Wind Turbine Boat

    boarding bob, May 20, 2015
    Replies:
    4
    Views:
    3,494
    boarding bob
    May 21, 2015
  27. alexrmc92

    First Real DIY Boat - Tiny Might

    alexrmc92, Aug 20, 2013
    Replies:
    2
    Views:
    3,811
    JakubT
    Mar 28, 2015
  28. mlopez0519

    Propeller Hub question

    mlopez0519, Mar 22, 2015
    Replies:
    7
    Views:
    2,927
    mlopez0519
    Mar 23, 2015
  29. Tupiniquim

    Reliable 200Hp engine and gearbox

    Tupiniquim, Mar 17, 2015
    Replies:
    3
    Views:
    4,091
    FAST FRED
    Mar 18, 2015
  30. Boucaneer

    Small electric paddle wheel for a open motor canoe. Some advise needed please.

    Boucaneer, Mar 15, 2015
    Replies:
    4
    Views:
    4,633
    Boucaneer
    Mar 15, 2015
  31. lifes2short

    DAF marine engines

    lifes2short, Mar 5, 2015
    Replies:
    2
    Views:
    3,959
    whitepointer23
    Mar 5, 2015
  32. sdowney717

    Self draining heat exchangers?

    sdowney717, Feb 27, 2015
    Replies:
    14
    Views:
    3,873
    sdowney717
    Mar 5, 2015
  33. safaounaghi

    Improving ship speed

    safaounaghi, Feb 15, 2015 ... 2
    Replies:
    17
    Views:
    4,764
    PAR
    Feb 18, 2015
  34. Paulc

    Wave propulsion

    Paulc, May 26, 2014 ... 2
    Replies:
    15
    Views:
    6,658
    kjell
    Jan 22, 2015
  35. Wahyuyohidayat

    Integrated Tug Barge

    Wahyuyohidayat, Jan 13, 2015
    Replies:
    0
    Views:
    2,241
    Wahyuyohidayat
    Jan 13, 2015
  36. fredrosse

    Steam Paddlewheel Boat

    fredrosse, Jan 25, 2005 ... 2
    Replies:
    24
    Views:
    32,419
    phrogjlf@yahoo
    Dec 17, 2014
  37. stonedpirate

    My outboard is spraying water at me

    stonedpirate, Nov 21, 2014 ... 2 3 4
    Replies:
    47
    Views:
    26,250
    WestVanHan
    Nov 24, 2014
  38. Arviya

    Wake Distribution

    Arviya, Nov 20, 2014
    Replies:
    3
    Views:
    2,964
    jehardiman
    Nov 21, 2014
  39. bam_yat

    engine room ventilation

    bam_yat, Nov 10, 2014
    Replies:
    11
    Views:
    12,781
    PAR
    Nov 11, 2014
  40. rwatson

    Huge slow two stroke Piston Engines in LNG commercial ships

    rwatson, Sep 16, 2014
    Replies:
    5
    Views:
    4,696
    rwatson
    Sep 18, 2014
Showing threads 121 to 160 of 977

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