building a mast

Discussion in 'Boat Design' started by ryanonthebeach, Mar 24, 2009.

  1. ryanonthebeach
    Joined: Mar 2007
    Posts: 84
    Likes: 6, Points: 8, Legacy Rep: 61
    Location: CA

    ryanonthebeach Junior Member

    Does anyone have experience or information on construction building techniques/ plans for
    Rotating Masts & Wing Masts? Or just masts in general.
    I've found a little information which I’ve posted http://www.psychosnail.com/blog/post/Rotating-Masts-Wing-Masts.aspx
    but what I’ve got so far is very technical on aerodynamics etc. I'm looking for something
    more practical.
    I remember seeing a pdf on building a wooden mast some while back mast but can’t find it again.

    Thanks!!!
    ryanonthebeach
     
  2. Boston

    Boston Previous Member

    find a guy named Eric Spoonberg in this thing
    he seems to be the mast guru
    B
     
  3. rasorinc
    Joined: Nov 2007
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    Location: OREGON

    rasorinc Senior Member

    Everything I found said keep weight down up high and use Sitka Spruce in a series of laminations and overlaps. I'm not a sailor man so that is the best I can do. There is other wood, some used in wing spars in airplanes of WW 2
    by the british and in the Japanese zero--they used wood from the Princess tree, tight vertical grain, light and very strong. I think they also called it the Kiri tree. Botanical name is Paulownia tree. Don't know what wood the British used in the Mosquito
    Those planes could pull 3 Gs on their wings at speed. If you used crib framing when you laminate I can't think of anything stronger in wood, using epoxy. Also, you can create 2- 1"x 2" hollow spaces or 1"x1" where in conduit you can run a lighting ground and in the other space you could run 4 hot lines and 4 ground lines seperated by 2" of wood from the lihtning ground. I hate seeing exterior conduits. P.S. lay your conduit in as you build it==much easier.
     
  4. PAR
    Joined: Nov 2003
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    Location: Eustis, FL

    PAR Yacht Designer/Builder

    Well, much depends on what you want, materials you'd like to use, the boat, the proposed rig, etc. Can you define a little more about your project needs for us. The very nature of masts and their use, requires a fairly good understanding of the engineering and aerodynamics involved. How else could you develop a structure capable of standing in building wind strengths.
     
  5. Eric Sponberg
    Joined: Dec 2001
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    Location: On board Corroboree

    Eric Sponberg Senior Member

    Call me and I can answer your questions.

    Eric
    (904) 460-9494
    St. Augustine, FL
     

  6. thudpucker
    Joined: Jul 2007
    Posts: 885
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    Location: Al.

    thudpucker Senior Member

    I saw plans to make a wooden mast of planks/glue in the "Wooden Boat" mag or the "Boat Builder" in the late 80's or early 90's.
     
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