Aluminum Lapstrake Colin Archer

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  • johngsandusky
    Senior Member
    • Dec 2003
    • 5554

    Aluminum Lapstrake Colin Archer

    I read a thread on WeldingWeb about an interesting boat. The guy is a sailor, seems to have researched boatbuilding well, and dove right in. He's building in welded aluminum lapstrake, and she's about planked up. I don't know how to post links, but if you go to WeldingWeb and look for posts by Zeyang, I think you'll find it.
  • BrianW
    not your average member
    • Nov 2002
    • 28191

    #2
    Re: Aluminum Lapstrake Colin Archer

    Pretty cool!
    “Travel is fatal to prejudice, bigotry, and narrow-mindedness, and many of our people need it sorely on these accounts. Broad, wholesome, charitable views of men and things cannot be acquired by vegetating in one little corner of the earth all one's lifetime.”― Mark Twain,

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    • peter radclyffe
      Senior Member
      • Apr 2009
      • 5524

      #3
      Re: Aluminum Lapstrake Colin Archer

      yeah he's got what it takes, & it appears he's building it mostly alone

      Comment

      • Dan McCosh
        Senior Member
        • Mar 2001
        • 16375

        #4
        Re: Aluminum Lapstrake Colin Archer

        Seems like a neat idea, but I wonder about the economics of all that welding.

        Comment

        • John B
          Senior Member
          • Aug 2000
          • 31703

          #5
          Re: Aluminum Lapstrake Colin Archer

          There's a thread on SA cruising as well.

          Comment

          • gert
            Senior Member
            • Jan 2001
            • 2419

            #6
            Re: Aluminum Lapstrake Colin Archer

            Always wondered if that was doable.
            the wall on which I keep hitting my head is getting harder

            Comment

            • johngsandusky
              Senior Member
              • Dec 2003
              • 5554

              #7
              Re: Aluminum Lapstrake Colin Archer

              Seems he's been thorough and careful so far. I wish him well.

              Comment

              • Dan McCosh
                Senior Member
                • Mar 2001
                • 16375

                #8
                Re: Aluminum Lapstrake Colin Archer

                Do you do the welding from the inside or the outside?

                Comment

                • Dan McCosh
                  Senior Member
                  • Mar 2001
                  • 16375

                  #9
                  Re: Aluminum Lapstrake Colin Archer

                  This looks like an extreme of multi-chine construction. It does seem the total length of the welded seams reaches extremes--a significant drawback to the technique. I've seen single-chine derivatives of similar hulls what work quite well. I'm thinking that the welding rod alone would be a significant percentage of the material cost.

                  Comment

                  • peter radclyffe
                    Senior Member
                    • Apr 2009
                    • 5524

                    #10
                    Re: Aluminum Lapstrake Colin Archer

                    yes Terry, can you give us an estimate of what it might cost, even just the hull plate & rods

                    Comment

                    • Dan McCosh
                      Senior Member
                      • Mar 2001
                      • 16375

                      #11
                      Re: Aluminum Lapstrake Colin Archer

                      Wonder if you could rivet and glue--they make Jaguars that way these days.

                      Comment

                      • johngsandusky
                        Senior Member
                        • Dec 2003
                        • 5554

                        #12
                        Re: Aluminum Lapstrake Colin Archer

                        I'm not sure he's in China. His weldingweb info gives that as his location, and he uses a Chinese name and references. But he's a blue eyed white European, and his plan is to sail the boat to China.
                        His thread shows pictures of other welded plank boats, hopefully he's getting good advice.

                        Comment

                        • George Ray
                          Senior Member
                          • Sep 2004
                          • 2765

                          #13
                          Re: Aluminum Lapstrake Colin Archer

                          Thanks very much for pointing out this interesting project. I had never considered a lapstrake metal hull and I applaud the builder for thinking 'out of the box' and wish the project much success.

                          Personally, my dream for uncommon metal construction is orgiami/strongall.
                          No frames initially, the stiffness is in the compound curved shape developed from a flat plate (darned quickly!!!).
                          Latest news coverage, email, free stock quotes, live scores and video are just the beginning. Discover more every day at Yahoo!







                          Last edited by George Ray; 12-07-2009, 09:05 AM.
                          This is the first lesson ye should learn: There is so much good in the worst of us, and so much bad in the best of us, it doesn't behoove any of us to speak evil of the rest of us.
                          E. Cayce

                          Comment

                          • Lewisboats
                            Obsessed Member
                            • Sep 2002
                            • 1117

                            #14
                            Re: Aluminum Lapstrake Colin Archer

                            I didn't check but is he using GTAW(TIG) or SMAW(Stick) welding?

                            Comment

                            • Lewisboats
                              Obsessed Member
                              • Sep 2002
                              • 1117

                              #15
                              Re: Aluminum Lapstrake Colin Archer

                              AH!...didn't think about MIG...we don't use it so it slipped my mind. If he goes cold the penetration won't be sufficient unless he backwelds it. Alum only has a 60% strength factor at the welds...hope he is using lots of filler wire and a good build up for his fillets.

                              Comment

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