Propulsion

Discuss marine engines, drives, and propulsion systems.

  1. Props

    Propeller selection, performance comparison, prediction, experience, and modification.
    Discussions:
    502
    Messages:
    5,783
    Latest: Correct prop size and speed rfleet1066, May 12, 2021 at 8:21 PM
    RSS
  2. Surface Drives

    Surface Drives. Arneson, BPM, Seafury, PSI, Levi, Etc.
    Discussions:
    174
    Messages:
    2,666
    RSS
  3. Jet Drives

    Jet Drives (pumps, impellers, etc.)
    Discussions:
    439
    Messages:
    4,148
    Latest: Schottel SPJ Propeller baeckmo, Apr 12, 2021
    RSS
  4. Outboards

    2-stroke and 4-stroke outboard motors.
    Discussions:
    990
    Messages:
    9,302
    Latest: converting a yamaha 9.9 four stroke to 15hp? 2senko6, May 11, 2021 at 2:12 PM
    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:
    542
    Messages:
    3,784
    RSS
  6. Pod Drives

    Volvo IPS, ZF, CMD Zeus, and other pod-drive systems
    Discussions:
    28
    Messages:
    296
    Latest: How does the propeller unit rotate? Infinitus, May 16, 2021 at 7:09 PM
    RSS
  7. Inboards

    Inboard and Vee-drive hardware: struts, stuffing boxes, transmissions, coolers
    Discussions:
    521
    Messages:
    4,820
    RSS
  8. Diesel Engines

    Diesel Engines
    Discussions:
    662
    Messages:
    8,342
    RSS
  9. Gas Engines

    Gasoline Engines
    Discussions:
    413
    Messages:
    4,560
    RSS
  10. Electric Propulsion

    Electric propulsion systems
    Discussions:
    70
    Messages:
    1,196
    RSS
  11. Hybrid

    Hybrid propulsion such as diesel electric, hydraulic.
    Discussions:
    209
    Messages:
    5,242
    RSS
  12. DIY Marinizing

    A forum to discuss "do it yourself" marinizing of engines / conversion of automotive engines to marine use.
    Discussions:
    274
    Messages:
    5,523
    RSS
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  39. DCockey
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  40. Archangl7
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