Speed boat

Discussion in 'Powerboats' started by Lachlanvan555, Mar 30, 2024.

  1. Lachlanvan555
    Joined: Mar 2024
    Posts: 1
    Likes: 0, Points: 1
    Location: Vic

    Lachlanvan555 New Member

    I have a little speed boat with a 50hp Johnson every time I go full throttle the front end dips down and not letting it glide across water properly doesn’t matter how much weight I put up the back I’v have had 5 bricks 40Ls of fuel and nothing up front and the motor cowling sits about an inch below the boat but still does it. Would it be because the motor is tilted far forward and needs to to be lifted more on an angle?
    any help and advise would be awesome and much appreciated.
     
  2. C. Dog
    Joined: May 2022
    Posts: 139
    Likes: 43, Points: 28
    Location: Coffs Harbour NSW Australia

    C. Dog Senior Member

    If it is manual tilt there is an adjustable trim rod between the transom brackets which adjusts the angle of the engine. Another thing is transom rot in plywood, fibreglass etc and transom damage on aluminium changing the transom angle. A person's weight on a slightly tilted outboard should show up transom flex.
     
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  3. Jimboat
    Joined: Feb 2002
    Posts: 267
    Likes: 22, Points: 18, Legacy Rep: 130
    Location: Canada

    Jimboat Senior Member

    it'd be helpful if you had some pictures showing the boat setup on trailer, and also while operating in condition that you're concerned about?
     
    Last edited: Apr 8, 2024
    BlueBell likes this.
  4. BlueBell
    Joined: May 2017
    Posts: 2,707
    Likes: 979, Points: 113
    Location: Victoria BC Canada

    BlueBell . . . _ _ _ . . . _ _ _

    Very possibly.

    Is the motor secure on it's mounts or can you bounce it around on the transom?
     
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  5. C. Dog
    Joined: May 2022
    Posts: 139
    Likes: 43, Points: 28
    Location: Coffs Harbour NSW Australia

    C. Dog Senior Member

    Mounts would condemn it in my opinion, the job is beyond amateur capabilities and too expensive to farm out. There were many different versions of the OMC 50hp over decades, and the manufacturer (assuming OMC, though it could be Bombardier I guess) is long gone so parts availability comes into it.
     
  6. C. Dog
    Joined: May 2022
    Posts: 139
    Likes: 43, Points: 28
    Location: Coffs Harbour NSW Australia

    C. Dog Senior Member

    Worn out tilt and steering bushings can make them do weird things too, but mainly with tracking.
     

  7. BlueBell
    Joined: May 2017
    Posts: 2,707
    Likes: 979, Points: 113
    Location: Victoria BC Canada

    BlueBell . . . _ _ _ . . . _ _ _

    Welcome to the Forum Lachlanvan.

    There have been a number of responses to your thread.
    You haven't logged on since last month.
    You may want to check in.

    Cheers, BB
     
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