Best practices for propeller shaft installation?

Discussion in 'Inboards' started by Mark Willoughby, May 2, 2025.

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  1. Mark Willoughby
    Joined: Apr 2025
    Posts: 12
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    Location: Nanaimo BC Canada

    Mark Willoughby Junior Member

    Why the cardan shaft remote v-drive approach, here's a few reasons:

    - allows more flexibility for the placement the engine and transmission to achieve proper vessel trim when underway and keep the shaft angle under 15 degrees
    - direct coupled v-drive / engine combos are often challenging to work on
     
    Mark Willoughby, May 3, 2025
    #16

  3. Mark Willoughby
    Joined: Apr 2025
    Posts: 12
    Likes: 0, Points: 1
    Location: Nanaimo BC Canada

    Mark Willoughby Junior Member

    Here is the data sheet published by Bertram in 1970 that contains some useful information for the discussion. Note that with 2 x 120 HP the vessel appears to attain more than 30 knots top speed.

    B25specs.jpg
     
    Mark Willoughby, May 3, 2025
    #17
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