1/120 Akula

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  • redboat219
    Admiral
    • Dec 2008
    • 2735

    #16
    Mloo123,
    ever considered using magnets to couple the servos and control rods together. The flat surface of the box lends itself to that.Click image for larger version

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    Make it simple, make strong, make it work!

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    • James Wittaker
      Lieutenant
      • Oct 2021
      • 67

      #17
      This one is closer to the real Akula submarine...

      Akula submarine R/C model | 3D CAD Model Library | GrabCAD

      Comment

      • mloo123
        Lieutenant
        • Apr 2022
        • 52

        #18
        Originally posted by redboat219
        Mloo123,
        ever considered using magnets to couple the servos and control rods together. The flat surface of the box lends itself to that.Click image for larger version

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ID:	161184Click image for larger version

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        Hi redboat219,

        Nice to see you here too. That magnet couple system looks sweet, especially if using them for forward or sail panes. Thanks for the tip!

        Comment

        • chaddivine
          Lieutenant, Junior Grade
          • Feb 2012
          • 17

          #19
          Great Work!

          Comment

          • mloo123
            Lieutenant
            • Apr 2022
            • 52

            #20
            Wheel weights just in. Will properly trim boat this weekend. Click image for larger version

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            • Das Boot
              Rear Admiral
              • Dec 2019
              • 1149

              #21
              Now that is a nice running place.
              Of the 40,000 men who served on German submarines, 30,000 never returned.”

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              • mloo123
                Lieutenant
                • Apr 2022
                • 52

                #22
                Some progress...

                Epoxy the rubber band hooks to the hull sides using home diy cable holder hooks cut into halves.

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                Last edited by mloo123; 04-28-2022, 09:14 AM.

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                • redboat219
                  Admiral
                  • Dec 2008
                  • 2735

                  #23
                  Originally posted by mloo123
                  Some progress...

                  Epoxy the rubber band hooks to the hull sides using home diy cable holder hooks cut into halves.

                  Click image for larger version

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                  Absolutely brilliant idea.

                  Btw, may I know the size of the boxes you're using.
                  thanks.
                  Make it simple, make strong, make it work!

                  Comment

                  • vital.spark
                    Commander
                    • May 2010
                    • 274

                    #24
                    Just wondering how waterproof these boxes are for our use? Have you tested them to say a bottom of a 9' pool? I'm asking this for I would assume they were designed to keep rainwater out at atmospheric pressure.

                    Comment

                    • mloo123
                      Lieutenant
                      • Apr 2022
                      • 52

                      #25
                      Originally posted by redboat219

                      Absolutely brilliant idea.

                      Btw, may I know the size of the boxes you're using.
                      thanks.
                      Size used W80mm x H70mm. Length for the main compartment is 180mm. Length is not critical but W & H depending on how wide the beam of the sub. In this case the beam is 104mm ID.

                      However, I find it's tough to get any smaller boxes than these as space within will be very constrain for any smaller sized subs.

                      Comment

                      • mloo123
                        Lieutenant
                        • Apr 2022
                        • 52

                        #26
                        Originally posted by vital.spark
                        Just wondering how waterproof these boxes are for our use? Have you tested them to say a bottom of a 9' pool? I'm asking this for I would assume they were designed to keep rainwater out at atmospheric pressure.
                        You are correct. These boxes were designed for atmospheric pressure which retards water intrusions with water jet spray at certain levels under it's IP ratings.

                        I don't have the luxury of having my own pool, plus any public pools or water feature landscapes available in my country that allows us to enjoy this hobby openly, thus will only sail them in small ponds or reservoirs in which will not submerged fully, maybe just till periscope depths to keep track of them. Hence at this depths these boxes were still be able to keep water out under it's own seals which I have tested with my industrial plastic container at home.

                        Hence I cannot comment whether can they withstand pressure at 9' under.

                        However, the main shafts seals have yet been tested for it's durability, but will find out soon after more running tests at home.
                        Last edited by mloo123; 04-29-2022, 07:12 AM.

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                        • RCSubGuy
                          Welcome to my underwater realm!
                          • Aug 2009
                          • 1768

                          #27
                          The utility boxes typically use a foam gasket. Replacing that with rubber or by smearing silicone in to make your own gasket will significantly increase the amount of pressure they'd be able to withstand. Based on my experience with them and my own gut instinct. I'd bet you could get to 30ft or more without an issue with the gasket mod.

                          Bob

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                          • mloo123
                            Lieutenant
                            • Apr 2022
                            • 52

                            #28
                            I know what you mean. Thanks for the tip!

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                            • redboat219
                              Admiral
                              • Dec 2008
                              • 2735

                              #29
                              What happened to the photos? Anyway, congratulations with the tank test.
                              Make it simple, make strong, make it work!

                              Comment

                              • mloo123
                                Lieutenant
                                • Apr 2022
                                • 52

                                #30
                                Thanks for the congrats.

                                As for the photos, im not sure why it's blocked by the moderator somehow during in the middle of editing some posts...

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