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Japanese Class A 1/16

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  • Thank you Manfed! I am grateful for your heart and willingness to share!
    If you can cut, drill, saw, hit things and swear a lot, you're well on the way to building a working model sub.

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    • what he said....and great stuff/detail.

      grtz,
      bart
      Practical wisdom is only to be learned in the school of experience.
      "Samuel Smiles"

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      • Hello
        I too have to say Thank you Manfred for your posting and sharing. Could I please ask / beg for you to redo the circuit drawing, I find I am having some trouble seeing clearly the drawing and the parts list itself.
        Sorry for the bother.
        George

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        • George, the scematic is what it is, as for the needed parts,
          P1- 1 Mega Ohm mini-potentiometer
          R1- 1 Mega Ohm resistor
          C1- 1 Elco 47 micro-Farad 16 Volts
          R2- 1 10 Kilo-Ohm resistor
          T1- 2 BC 547B Transistors

          As for the relais, this depents on which voltage you run the circuit, i've used a 6 volt relais because i run on 2S (7,4 Volts)

          Manfred.
          Fertig zum unterwasser.

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          • Still on the move with the Ko Hyoteki, wanted to make some big steps accourding the hull build, this is where i stand now

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            First i had to skin the hull with glass to protect the styrodure against the filler and paint.

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            In general i apply one extra coat of epoxy to fill most holes, believe me, after spraying some primer i found a lot more, had to make about six runs of filler and wetsanding to get her right.

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            After this hurdle was taken the fun started, applied all weldinglines with a laser, and started to add the fishingline for imitating the weldinglines.

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            It took a week or so to get all lines glued down, sniffed enough CA fumes for months.

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            It was worth the effort, she finally starts to look like a sub, next time i will enjoy you guys with rivets-time.

            Manfred.
            Fertig zum unterwasser.

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            • Wow.....just wow.
              If you can cut, drill, saw, hit things and swear a lot, you're well on the way to building a working model sub.

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              • What he said! How did you do this; "applied all weldinglines with a laser"?

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                • laser is for straight lines both vertical and horizontal and fish line for actual bead, I believe.
                  If you can cut, drill, saw, hit things and swear a lot, you're well on the way to building a working model sub.

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                  • Less exciting than I had imagined. Que James Bond laser scene etc etc.

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                    • Tom is right, i bought a simple laser that could project both the horizontal and the vertical lines at once, placed it on a tripod and moved the boat on the workingbench.
                      Added the fishinglines as imitation of the weldingbeads, one catch, use braided line, it better simulates the weldingbead.
                      Be patient, the rivet adventure will follow soon, all i can say, it was al lot of work/time to get those in complete with all the hatches.

                      Manfred.
                      Fertig zum unterwasser.

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                      • As promised the rest of the story, after placing the weldinglines i had to move over to placing the rivets, used the laser again to mark out the places of the rivets, started with the easy one's at the bow and the stern, a job pretty straight forward.

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                        The more difficult one's where the ventholes for the batteries, made a template and drilled the holes, inserting the rivets to finish it up.

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                        This one was more complex, luckely i had some documentation profided by David and Gene, together with a book from this sub i went making the templates for making this, you also can see the double row of rivets at the stern.

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                        I decided to use primer instead of glue for locking up those rivets, this way i get nice sharp rivets without the trouble of removing the excess glue, gave her a total of three layers of primer, more to be sure that those rivets stay on their place.

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                        Last but not least the final layer of paint, done this to get a smooth surface for making the mold, for now i have to make the bracket for holding the plug and prep her for building up the actual epoxy mold, this would be my first in adding all details on the plug itself, to get all the details i'm going to use a gelcoat at the first stage of building the mold.
                        I took me a few months to get to this point, running the gauntlett between the honey-do list, my house, the bikes and some other minor things, normally i prefer to build the mold during the spring because of tempartures.


                        Manfred.

                        Fertig zum unterwasser.

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                        • Manfred, That is an amazing sub! If you re going to make some hulls, let me know the price and I will see if I can afford one. That is truly a work of art as well as a reflection of your craftsmanship.
                          If you can cut, drill, saw, hit things and swear a lot, you're well on the way to building a working model sub.

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                          • Here, here. Great looking boat.

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