Russian Alfa Class

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  • rwtdiver
    Vice Admiral
    • Feb 2019
    • 1770

    Today I cut the stern section!

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    I cut the stern section on my 1:96 Alfa scale exactly the same way. It will allow me to get better access to construct the yokes for the rudder and stern plane linkages. It is a tight fit and the control shafts are centered on one another making it even a little more challenging to get a perfect smooth operation off the control surfaces.

    This did work very well on my 1:96 scale (which was tighter) so it will even be better on this 1"72 scale Alfa!

    Rob
    "Firemen can stand the heat"

    Comment

    • rwtdiver
      Vice Admiral
      • Feb 2019
      • 1770

      Making some headway on the stern section!

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      I have the bushings and the shafts on the rudders and the dive Plaines installed, as well as the control rod linkages tied into the control surfaces.

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      The drive shaft and the bushings (3/16") along with the support system is all installed!

      Rob
      "Firemen can stand the heat"

      Comment

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

        Looking great, Rob!

        Comment

        • rwtdiver
          Vice Admiral
          • Feb 2019
          • 1770

          Originally posted by SubHuman
          Looking great, Rob!
          Thanks Bob!

          It looks like the drive shaft and the brushless motor is going to be a straight on shot for line up!

          Rob
          "Firemen can stand the heat"

          Comment

          • rwtdiver
            Vice Admiral
            • Feb 2019
            • 1770

            I have a question about mounting the brushless motor!?

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            Is it possible to use 4 stainless steel screws for mounting the motor plate and not penetrate the endcap? Or do I need to penetrate the end cap and install stainless steel nuts and bolts?

            Thank you for your input!

            Rob
            "Firemen can stand the heat"

            Comment

            • SubDude
              Captain
              • Dec 2019
              • 803

              I would thread them in without penetrating the endcap if they have some length to them.

              Comment

              • Das Boot
                Rear Admiral
                • Dec 2019
                • 1149

                Keep rocking on, Rob.
                Of the 40,000 men who served on German submarines, 30,000 never returned.”

                Comment

                • rwtdiver
                  Vice Admiral
                  • Feb 2019
                  • 1770

                  Originally posted by RCJetDude
                  I would thread them in without penetrating the endcap if they have some length to them.
                  Thank you Steve!

                  I was really hoping that would be the best method! Certainly will eliminate another possible leak source. I understand what you are saying about a good length and probably a strong deep thread.

                  Thanks again for your advice!

                  Rob
                  "Firemen can stand the heat"

                  Comment

                  • rwtdiver
                    Vice Admiral
                    • Feb 2019
                    • 1770

                    I finished up the WTC alignment saddles, which now keeps the WTC in straight alignment and secure to the bottom of the hull!

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                    I also lined up the mounting bracket for the brushless motor. The motor shaft is going to be a straight right on with the propeller shaft!

                    I am really starting to like the idea of brushless motors for the propeller drive power systems! Geez, I may just go back into the other 18 boats I have and change over to brushless!! "Just Kidding" :-))

                    Rob
                    "Firemen can stand the heat"

                    Comment

                    • Das Boot
                      Rear Admiral
                      • Dec 2019
                      • 1149

                      I like the idea of the alignment pins. Are the holes already cut out via the program for the printer?
                      Of the 40,000 men who served on German submarines, 30,000 never returned.”

                      Comment

                      • rwtdiver
                        Vice Admiral
                        • Feb 2019
                        • 1770

                        Originally posted by Das Boot
                        I like the idea of the alignment pins. Are the holes already cut out via the program for the printer?
                        The motor mount is just stuck to the end cap with two sided tape. I put a dab of black paint on the end of the propeller shaft which left a mark on the end cap as to where the mount will be installed. nothing has been installed yet!

                        Rob
                        "Firemen can stand the heat"

                        Comment

                        • rwtdiver
                          Vice Admiral
                          • Feb 2019
                          • 1770

                          Originally posted by Das Boot
                          I like the idea of the alignment pins. Are the holes already cut out via the program for the printer?
                          Sorry Casey! I miss understood your question.

                          The alignment holes are part of the print files. They are in both the top sections and the bottoms. I did enlarge the holes so that I could use 1/8" brass rods for the pins. The files had them matched up almost perfect!

                          Rob
                          "Firemen can stand the fire"

                          Comment

                          • rwtdiver
                            Vice Admiral
                            • Feb 2019
                            • 1770

                            Another question about the wires that need to penetrate the end cap into the WTC!?

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                            Do you bore a hole just big enough to get the 3 wires through the end cap and then fill it full of silicone? Or is there a possible better way?

                            Thanks for the help and advice!

                            Rob
                            Firemen can stand the heat"

                            Comment

                            • neitosub
                              Lieutenant Commander
                              • Nov 2021
                              • 129

                              Hi Rob,

                              On my WTC I snipped off the bullet connectors on the motor wires and passed the wires through holes in the endcap that were the same diameter as the wires. I then re-soldered the connectors back onto the wires on the other side (dry side) of the endcap. I plan on either simply sealing the wire with a dab of superglue, or some silicone. Either way works, although the silicone method would be removable and probably allow you to pull the wires back out in case you want to remove or replace the motor down the road.

                              Hope this helps,

                              Nate

                              Comment

                              • rwtdiver
                                Vice Admiral
                                • Feb 2019
                                • 1770

                                Originally posted by neitosub
                                Hi Rob,

                                On my WTC I snipped off the bullet connectors on the motor wires and passed the wires through holes in the endcap that were the same diameter as the wires. I then re-soldered the connectors back onto the wires on the other side (dry side) of the endcap. I plan on either simply sealing the wire with a dab of superglue, or some silicone. Either way works, although the silicone method would be removable and probably allow you to pull the wires back out in case you want to remove or replace the motor down the road.

                                Hope this helps,

                                Nate
                                Thanks Nate!

                                I really like that idea! And buy making three smaller holes that will just let each wire through will make it easier to seal rather than one large hole that all three go through which would make sealing a lot harder! Makes good since!

                                Thanks again for the great advice!

                                Rob
                                "firemen can stand the heat"

                                Comment

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