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1/96 Albacore (after Phase III coversion 1961)

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  • Originally posted by DMTNT View Post

    Perhaps a dumb question, but I've found that my aft dive plane control rod magnet de-coupling when I apply full throw on the servo. It'll still pull the rod attached to the aft planes, but the connection breaks until the servo returns to neutral and the magnets re-couple. Full throw in the opposite direction isn't an issue as the rod is being pushed.
    You're not alone there. It's happened to me. Either owing to some mechanical binding within the linkage or hydrodynamic forces from the control surface itself. The solution, as some have done is to go with bigger magnets that are less prone to de-coupling under tension. What I do is slip on a bent 'U'-shaped retainer clip that keeps the two magnets in close proximity, no mater how much tension is exerted to break union between magnet faces.







    David
    "... well, that takes care of Jorgenson's theory!"

    Comment


    • Iíll look into that. My temporary solution has been to just join the offending pushrods with a brass collar and a set screw. Kills the quick-detach functionality, but itís not going anywhere.

      -Brady

      Comment


      • Originally posted by DMTNT View Post
        Iíll look into that. My temporary solution has been to just join the offending pushrods with a brass collar and a set screw. Kills the quick-detach functionality, but itís not going anywhere.

        -Brady
        That'll do it. But investigate why the magnet pull apart do to excessive tension -- something wroing with the linkage. Something is binding somewhere. Track it down and fix! Let's see some pictures of the linkages. Rudder, stern planes, and bow planes.

        David
        "... well, that takes care of Jorgenson's theory!"

        Comment


        • If it is not binding, another area is that the throw of the servo is much.
          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






















          • David
            "... well, that takes care of Jorgenson's theory!"

            Comment


            • Look at that wee beastie. Magnificent job.

              Comment


              • Wow.

                I'd love to know what your choice of gray primer is.

                Comment


                • Originally posted by DMTNT View Post
                  Wow.

                  I'd love to know what your choice of gray primer is.
                  I use industrial grade fillers, putties and paints.



                  The DuPont automotive primers and paints are my favorites. Economical, chemically stable, tough, and well supported throughout the country. Nason gray primer is the one of choice today, as the old S31S just got too costly.





                  My favorite application tool is the old, nasty Paasche H-model, single-action spray gun. I'll occasionally use a big touch-up gun for the bigger work, and only rare occasions I'll make use of a double-action spray-brush.







                  David
                  "... well, that takes care of Jorgenson's theory!"

                  Comment






















                  • David
                    "... well, that takes care of Jorgenson's theory!"

                    Comment




















                    • David
                      "... well, that takes care of Jorgenson's theory!"

                      Comment






















                      • David
                        "... well, that takes care of Jorgenson's theory!"

                        Comment


                        • What a boatload of information in these photos......Thank you.
                          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














                          • David
                            "... well, that takes care of Jorgenson's theory!"

                            Comment


                            • What a lesson of how to do things and arrange everything properly. Will remember and apply myself.

                              Comment
















                              • David
                                "... well, that takes care of Jorgenson's theory!"

                                Comment

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