November Holiday

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  • trout
    Admiral
    • Jul 2011
    • 3545

    look forward to your solution!
    If you can cut, drill, saw, hit things and swear a lot, you're well on the way to building a working model sub.

    Comment

    • He Who Shall Not Be Named
      Moderator
      • Aug 2008
      • 12256



















      David
      Who is John Galt?

      Comment

      • DMTNT
        Commander
        • Jun 2018
        • 297

        Love watching you do that voodoo that you do so well.
        Dead men tell no tales...

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        • HardRock
          Vice Admiral
          • Mar 2013
          • 1609

          Oh,oh,oh excited squeel. Propellers! They look great even without the dunce caps.

          The third, and I hope, final answer to the forward sonar dome. This one is thin brass sheet beaten into submission and stuck to the front. I still have to refine the edges but it certainly looks a lot better.

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          • He Who Shall Not Be Named
            Moderator
            • Aug 2008
            • 12256

            That sonar window is beautiful. Please share with us riff-raff how you did it.

            David
            Who is John Galt?

            Comment

            • DMTNT
              Commander
              • Jun 2018
              • 297

              Click image for larger version

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              Just curious, what is the sonar unit in the sail? It would appear that it rotates. I think I remember reading that our sets had to be “steered” as well. It is just interesting considering the multitude of different sonar arrays on & around the bow.
              Dead men tell no tales...

              Comment

              • He Who Shall Not Be Named
                Moderator
                • Aug 2008
                • 12256

                Originally posted by DMTNT
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                Just curious, what is the sonar unit in the sail? It would appear that it rotates. I think I remember reading that our sets had to be “steered” as well. It is just interesting considering the multitude of different sonar arrays on & around the bow.
                I think it's a high frequency 'object (mine) avoidance' sonar.

                It was an old practice to physically steer the receiving/transmitting 'beam' using a one or two axis turntable/gimble; the entire array moved. Nowadays the beam is formed mechanically (an armature) or electronically by selecting elements (transducers) of a fixed array for listening and/or transmitting.

                David
                Who is John Galt?

                Comment

                • HardRock
                  Vice Admiral
                  • Mar 2013
                  • 1609

                  Originally posted by He Who Shall Not Be Named
                  That sonar window is beautiful. Please share with us riff-raff how you did it.

                  David
                  Impressed a thin sheet of brass over the nose to get the right shape; cut it to size; turned it over and scribed the back with a file; turned it the right way over and stuck it down. Turned out better than I thought it would and will probably look a lot better once I feather the edge around it and clean that up some more. More work on the sail today.

                  Comment

                  • He Who Shall Not Be Named
                    Moderator
                    • Aug 2008
                    • 12256

                    Originally posted by HardRock

                    Impressed a thin sheet of brass over the nose to get the right shape; cut it to size; turned it over and scribed the back with a file; turned it the right way over and stuck it down. Turned out better than I thought it would and will probably look a lot better once I feather the edge around it and clean that up some more. More work on the sail today.
                    Scribed? Do you mean embossed, like high-relief copper work? Such as: https://www.bing.com/images/search?q...ed&FORM=HDRSC2.

                    If so, what was the surface you embossed over? And what's the gauge of the foil we see here?

                    David
                    Who is John Galt?

                    Comment

                    • DMTNT
                      Commander
                      • Jun 2018
                      • 297


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                      Scott, I ran across this shot in a short Russian documentary about K-3 on YouTube, and it gave a really nice shot of the bow sonar window. You might have already seen it, but just in case you had not...



                      Dead men tell no tales...

                      Comment

                      • HardRock
                        Vice Admiral
                        • Mar 2013
                        • 1609

                        Thanks Mate. That's a good shot. David: I mean scribed. Its .005" brass sheet. I used a bluntish file point to scribe the lines on the back side of the brass. What you see on the reverse is the pushed out scribe lines. I just laid the brass on a cutting matt so that the scribing didn't go too deep.

                        Comment

                        • He Who Shall Not Be Named
                          Moderator
                          • Aug 2008
                          • 12256

                          Originally posted by HardRock
                          Thanks Mate. That's a good shot. David: I mean scribed. Its .005" brass sheet. I used a bluntish file point to scribe the lines on the back side of the brass. What you see on the reverse is the pushed out scribe lines. I just laid the brass on a cutting matt so that the scribing didn't go too deep.
                          Very good, Scott. Thanks for the details. Looks great. Just finished the dunce-caps, now working on the bow plane master. As soon as I get a hull I'll work up masters for the SD saddles, indexing pin-Velcro strap foundation, control surface bell-cranks, SAS snorkel, and anything else that will be useful to anyone making this thing r/c.

                          Anything else I can do to help out with this project, Scott?

                          I'll have the SD's (mine and yours) worked out within two weeks of getting the hull -- need the hull to work out the topside displacement so I can plug that into the SD ballast tank design. I'm going with a two-motor 2.5" Lexan cylinder -- using mostly GATO SD parts.

                          David
                          Who is John Galt?

                          Comment

                          • He Who Shall Not Be Named
                            Moderator
                            • Aug 2008
                            • 12256





















                            David
                            Who is John Galt?

                            Comment

                            • DMTNT
                              Commander
                              • Jun 2018
                              • 297

                              Originally posted by He Who Shall Not Be Named




















                              David
                              Between what both of you have shown, you cannot believe how excited I am to build one of these up. Fantastic work on the props, David.
                              Dead men tell no tales...

                              Comment

                              • He Who Shall Not Be Named
                                Moderator
                                • Aug 2008
                                • 12256

                                NOVEMBER has been on my bucket-list since I first saw the thing in a (then) classified submarine ID booklet that one of the WEBSTER's navaguessers left on the chart-table unattended. I was standing watch at the BCP at the time and to break up the soul-crushing boredom of a patrol mid-watch, the OD had the messenger grab it and pass it around till everyone got an eye-full. Called it 'training'.

                                Forty-five years later and now that the cat's out of the bag (thank you Russian former crew and fan boys), we can have a credible looking model of this beast. I thank Scott for letting me contribute to this project.

                                David
                                Who is John Galt?

                                Comment

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