constructive system (cheap) for a cata

Discussion in 'Boatbuilding' started by garrobito, Aug 11, 2003.

  1. garrobito
    Joined: Mar 2003
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    Location: san leandro, ca.

    garrobito Junior Member

    :D Hi everybody!
    I'm looking for a cheap and faster constructive system for my catamaran 25".
    What do you think?? west system?? or strip plank???
    I don't have a lot of experience in construction boat, but have a lot of entusiatic and know about tools.
    thanks you!:idea:
     
  2. terhohalme
    Joined: Jun 2003
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    Location: Kotka, Finland

    terhohalme BEng Boat Technology

    Hello Miguel,

    I build this 7 m, 350 kg proa in 400 hours. The structure is plywood with glass-epoxy tapings.
     

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  3. gonzo
    Joined: Aug 2002
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    Location: Milwaukee, WI

    gonzo Senior Member

    Cheap and fast? A flat bottom plywood boat will give you that.
     
  4. terhohalme
    Joined: Jun 2003
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    Location: Kotka, Finland

    terhohalme BEng Boat Technology

    Yes, cheap and fast to construct. Wasn't that the question?

    Terho
     
  5. garrobito
    Joined: Mar 2003
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    Location: san leandro, ca.

    garrobito Junior Member

    :eek: The question is... about constructive system.
    Do you know some about that??
    Or just waste my time??
     
  6. terhohalme
    Joined: Jun 2003
    Posts: 512
    Likes: 38, Points: 28, Legacy Rep: 506
    Location: Kotka, Finland

    terhohalme BEng Boat Technology

    If you are so in a hurry, you propably haven't got the time to have a look in here:

    http://kotisivu.mtv3.fi/terho.halme/

    The fastest system to make the boat is from plywood with stitch & glue method. If the boat is designed correctly, you even don't need any mold to assemble her.

    If you want round corners to your boat, use stips.

    West system is OK. Do you already have the book Gougeon Brothers in Boat Construction? If not, have it.

    Terho
     
  7. gonzo
    Joined: Aug 2002
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    Location: Milwaukee, WI

    gonzo Senior Member

    I find that a framed hull is about as fast to build as a stich glued. The exception is if a designer makes an accurate set of patterns for the stich and glue. I can build a flat bottom boat in about two days. That includes thwarts, mast , rudder and centerboard. Of course the finish is like a work boat. However, to experiment and learn, is a mistake to look for a perfect finish. Many people get discouraged that way. The details get in the way of the original idea; which is to go floating. Use AC plywood, spruce or fir lumber from the building supply store, ss deck screws and exterior grade liquid nails. Butt block the panels and glass over them and all the chines, sheer, bow and stern seams. Polyester with mat works OK. Paint everything and put it in the water. I assure you that there will be many things you'll want to change. The advantage is that the expensive to buy things: hardware, sails, rigging ,etc. can be transfered to a new hull. This is a cheap way to experiment and learn.
     
  8. Thunderhead19
    Joined: Sep 2003
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    Location: British Columbia, Canada

    Thunderhead19 Senior Member

    Stitch and glue is the ticket. I prefer to use internal framing (just a couple) anyway to stabilize the shape. Plank on frame is quick too, but a tweak heavier.
     

  9. newo eloc
    Joined: Jul 2005
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    Location: Australia

    newo eloc Junior Member

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