Home Forum Ask A Member Caille Neptune Gas Tank Repair?

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  • #221745
    Buccaneer
    Participant

      US Member - 1 Year (includes $3 online payment fee)

      I tore the gas tank apart today. I’ve seen worse, but it is fairly
      rusty inside, and has a few pin holes, and likely leaks around
      some of the rivets.
      I’m toying with the idea of buying some sheet metal and starting
      from scratch. It’s been a long time since my 9th grade
      sheet metal class…… that lasted about a week.
      I made a little rectangular box with a cover.
      Only problem is this gas tank looks like a 12th grade project,
      and I don’t have the fancy tools like they did in shop class.

      The middle band of the tank has the folded joints that the top
      and bottom tank pieces fits into. The top and bottom pieces
      just have a 90 degree fold that fits into the band. Getting a
      nice 90 degree fold on the rounded side of the tank might
      be challenging.

      Anybody make their own tanks, and have wisdom to share?

      Whatever fitting for the fuel line, that protruded from the bronze casting
      on the bottom of the tank, has been broken off, and I have
      no petcock for the Caille. Will have to research what I need to
      repair that.
      Thanks!

      DSCN9850

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      Prepare to be boarded!

      #221751
      dave-bernard
      Participant

        US Member - 1 Year (includes $3 online payment fee)

        I am not into this work BUT how about making a pattern from 1/4 in steel then you may be able to hammer a 90 degree edge around it .just a thought.

        #221752
        Buccaneer
        Participant

          US Member - 1 Year (includes $3 online payment fee)

          That’s a good idea Dave, but I bet even a plywood pattern would work, as the sheet metal
          is only .030 thick. Have to research what gauge that is.

          Prepare to be boarded!

          #222103
          joecb
          Participant

            US Member - 2 Years

            Bucc, good start, seeing how the original was put together. I had to make one a while back. Yes, best to have a accurately made hard wood ( maple best) pattern to form the top and bottom accurately and also ensure that the sides fit the top and bottom.

            Joe B

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            • This reply was modified 3 years, 4 months ago by Mumbles.
            #222518
            need2fish
            Participant

              Just a thought…. if your priorities are around cosmetics and can stand something unconvential to gain functionality, consider inserting a plastic tank into your newly repaired/homemade tin tank. With that you don’t have to worry about leaky seams. I’ve had some success with bladders .

              #222520
              Buccaneer
              Participant

                US Member - 1 Year (includes $3 online payment fee)

                Bucc, good start, seeing how the original was put together. I had to make one a while back. Yes, best to have a accurately made hard wood ( maple best) pattern to form the top and bottom accurately and also ensure that the sides fit the top and bottom.

                Joe B

                tank-new-1

                tank-new-2

                tank-new-3

                tank-new-4

                • This reply was modified 3 years, 4 months ago by Mumbles.

                Joe, Very Nice Job, I’m impressed!
                Few questions if you don’t mind.

                What kind of sheet metal? Plain steel or galvanized?

                Did you use an old fashion blacksmith type soldering iron,
                little bottle torch, or?

                What kind of flux and solder, and did you use muriatic acid for
                cleaning the seams, like I seen on YouTube?

                What if any specialty tools did you use to make the seams?
                I have a small hand brake or flanger… not sure of it’s proper name,
                but it’s about 3″ wide.

                Sorry for all the questions! Thanks.

                Prepare to be boarded!

                #222521
                Buccaneer
                Participant

                  US Member - 1 Year (includes $3 online payment fee)

                  Just a thought…. if your priorities are around cosmetics and can stand something unconvential to gain functionality, consider inserting a plastic tank into your newly repaired/homemade tin tank. With that you don’t have to worry about leaky seams. I’ve had some success with bladders .

                  I could think of a couple of issue with a plastic tank inside
                  the tank, especially if one used a torch to solder the outer
                  tank back up. Also, Not sure what one with do with the gas
                  cap to make it look original.
                  You may have a sound idea, but I’d probably just
                  use gas tank sealer if in doubt about the tank leaking.
                  Thanks.

                  Prepare to be boarded!

                  #223851
                  Buccaneer
                  Participant

                    US Member - 1 Year (includes $3 online payment fee)

                    Joe, replied to your PM, heading out to the garage, will check back later. Thanks.

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                    #223863
                    Buccaneer
                    Participant

                      US Member - 1 Year (includes $3 online payment fee)

                      Just got done removing the brass casting from the bottom tank panel.
                      That was harder than taking the tank seems apart, especially when
                      you’re worried about breaking the castings. So far, so good.
                      I dug out what sheet metal tools I inherited from my dad.
                      Forgot I even had the shorter “folder” for bending the edge of sheet metal.
                      Found a piece of old sheet metal I may practice on, but not quite
                      big enough for the whole tank. Fun.

                      DSCN9861

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                      #223866
                      bobw
                      Participant

                        US Member - 1 Year (includes $3 online payment fee)

                        Buc – looks like a real task. Just curious how the castings are attached to the tank – riveted and soldered?

                        Bob

                        1937 Champion D2C Deluxe Lite Twin
                        1954 Johnson CD-11
                        1957 Evinrude Fastwin 18
                        1958 Johnson QD-19
                        1958 Johnson FD-12
                        1959 Johnson QD-20

                        “Every 20 minute job is only a broken bolt away from a 3-day project.”
                        "Every time you remove a broken or seized bolt an angel gets his wings."

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