Hickman Sea Sled Information

Discussion in 'Boat Design' started by DogCavalry, Feb 12, 2021.

  1. BlueBell
    Joined: May 2017
    Posts: 1,458
    Likes: 331, Points: 83
    Location: Victoria BC Canada

    BlueBell Ahhhhh...

    It's almost comical.
    It appears it got worse forcing de-throttling and starting anew.
    I agree, trim and perhaps prop depth, or both.
     
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  2. DogCavalry
    Joined: Sep 2019
    Posts: 990
    Likes: 489, Points: 63
    Location: Vancouver bc

    DogCavalry I aim to misbehave.

    Oh
    My
    God
    !!!

    Look at figure 6 in the PDF. Hickman invented double differential steering in 1911, and didn't think anything of it. That was introduced in tanks 30 years later, and it was revolutionary.
     
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  3. Mr Efficiency
    Joined: Oct 2010
    Posts: 9,468
    Likes: 766, Points: 113, Legacy Rep: 702
    Location: Australia

    Mr Efficiency Senior Member

    I happened on this by accident, not sure it is already known to the sled fanatics here !
    invertedvboats.freeservers.com/index.html
     
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  4. DogCavalry
    Joined: Sep 2019
    Posts: 990
    Likes: 489, Points: 63
    Location: Vancouver bc

    DogCavalry I aim to misbehave.

    I saw it years ago, also by accident, and lost track of it. Thanks for bringing it into the thread Mr. Efficiency! Some great stuff there.

    Mention of a 6.5m original sled with 24" prop.
     
    Last edited: Feb 24, 2021 at 10:33 AM

  5. DogCavalry
    Joined: Sep 2019
    Posts: 990
    Likes: 489, Points: 63
    Location: Vancouver bc

    DogCavalry I aim to misbehave.

    With regards to porpoising.

    Extensive conversations with several builders and operators relate that the sea sled can not be operated bow high. Run that way it will have a tendency to porpoise. Marcus Lee's first sled porpoised brutally it's first morning. He had built a plumb transom. Welded on a new plate, giving the engines space to trim in. Problem solved that day.
     
    BlueBell likes this.
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