Material for a small lifting boom.

Discussion in 'Materials' started by missinginaction, Jul 23, 2020.

  1. missinginaction
    Joined: Aug 2007
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    Location: New York

    missinginaction Senior Member

    hoytedow likes this.

  2. missinginaction
    Joined: Aug 2007
    Posts: 992
    Likes: 197, Points: 43, Legacy Rep: 512
    Location: New York

    missinginaction Senior Member

    I'm making some progress in the basement shop on the dinghy storage problem that I've been grappling with. What you see there is what I call a "rotating frame".

    IMG_20210207_103528856.jpg IMG_20210207_104431842.jpg

    This will mount on the swim platform. The first photo shows the frame in the deployed position. The second shows the frame in the "stowed" position.

    When deployed the dinghy will attach to the horizontal pipe using a pair of Weaver Snap Davits. It then rotates 135 degrees to rest on the frame. The frame then pivots 45 degrees to the stowed position. The dink is upside down when stowed.

    The rectangular structure that extends out on the right side of the frame will be a 3' x 1' platform. I'll be able to step off the dink onto the platform.

    This is just a mock up. The final version will be made from anodized 6063 schedule 40 Aluminum pipe (1.5").

    Still have some details to work out but the geometry works just fine.

    Thanks to all who posted regarding this topic, you kept me thinkin'!

    MIA
     
    Last edited: Feb 7, 2021
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