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Moebius (Revell) Skipjack Build

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  • Just read thru all 21 pages of this Tom. Lots of good information, thanks for posting all the details, will help on my Skipjack. Technology changed from when you first started. One thing I have not embraced is 3D printing, maybe someday.

    Comment


    • Ken, Thank you. If it helped, mission achieved! One thing I am certain of, you will take this to the next level! Technology does change, but the basics are still the same. Look forward to your build and maiden voyage!
      Peace,
      Tom
      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


      • Originally posted by trout View Post
        I needed to make a magnetic connector for the Skipjack.
        The parts needed are:
        Two cylinder magnets
        Two thin slices of 5/32" tubing
        Two 1/8" tubing cut slightly longer than the cylinder magnets
        one 3/32" brass rod just a small section
        Two 3/32" brass tube lengths

        This is designed to fit on a 1/16" pushrod.
        [ATTACH=CONFIG]27283[/ATTACH]
        The 5/32" sliver slips on the end of each 1/8" tubing and gets soldered on.
        Cut a length of 3/32" tube and solder so that it is in half way in the 1/8" piece, opposite of where the sliver is soldered. Do this to both 1/8" tubes.
        One 1/8" tube will have the rod inserted in the same side as the sliver and is soldered in.
        [ATTACH=CONFIG]27284[/ATTACH]
        Put it in a lathe or hand piece like a dremel, even a drill press could probably be used. Anyway, using files thin the 1/8" tube until the magnet slips on. Also thin out the sliver. The thinner you make it the closer the magnets will be and stronger the hold. The purpose of the sliver is a stop for the magnet.
        [ATTACH=CONFIG]27286[/ATTACH]
        CA or epoxy the magnets in.
        I have simplified this by deleting the brass sleeve that needed to be turned down. When I epoxy the magnet in, It fills the gap. Makes it a real quick and strong connector. I will post photos when I can.
        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


        • Today was the open water shakedown cruise. I get really nervous the first few times I run a new sub.
          The run was made easier for two reasons. Neil Schmidt now lives in Las Vegas and came down to watch the sub run. Hanging with friends just makes it that much nicer. Second, the water was very clear. Had great visibility (except for two times when I was goofing around with speed and maneuvers - went deep) and the temperature as not surface of the sun hot!
          Click image for larger version

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          The sub ran well. The only issue is a little porpoising and I will change the sensitivity of the leveler and see how it goes next time out. After one hour, I brought my sub in and at the shore the power light on the Zepsus switch was off. Odd, just figured that was that. When I got home to charge the batteries, as I opened the tube, the power came back on. Still had 12v+ left. Fully charged thee NiMh show 14.2v, so to only drop 2v after an hour that was cool to me. Now I got to find what caused power to go off. Once opened the WTC was bone dry!

          Click image for larger version

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          As far as trim goes, I think I am there.
          Here is the way it is as of today
          Click image for larger version

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          Magnetic connector and my own pro shaft connector. Magnets were used on the prop shaft connector, but probably not necessary.

          Click image for larger version

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          Most of the weight was below piston tank. There is a small slice in the bow.

          Click image for larger version

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          All for that I used was in the aft of the sub.
          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


          • Originally posted by trout View Post
            Today was the open water shakedown cruise. I get really nervous the first few times I run a new sub.
            The run was made easier for two reasons. Neil Schmidt now lives in Las Vegas and came down to watch the sub run. Hanging with friends just makes it that much nicer. Second, the water was very clear. Had great visibility (except for two times when I was goofing around with speed and maneuvers - went deep) and the temperature as not surface of the sun hot!
            Click image for larger version

Name:	Skipjack_Run_06_2020_001.jpg
Views:	126
Size:	85.5 KB
ID:	141154
            The sub ran well. The only issue is a little porpoising and I will change the sensitivity of the leveler and see how it goes next time out. After one hour, I brought my sub in and at the shore the power light on the Zepsus switch was off. Odd, just figured that was that. When I got home to charge the batteries, as I opened the tube, the power came back on. Still had 12v+ left. Fully charged thee NiMh show 14.2v, so to only drop 2v after an hour that was cool to me. Now I got to find what caused power to go off. Once opened the WTC was bone dry!

            Click image for larger version

Name:	Skipjack_Run_06_2020_003.jpg
Views:	104
Size:	95.4 KB
ID:	141155Click image for larger version

Name:	Skipjack_Run_06_2020_004.jpg
Views:	100
Size:	85.1 KB
ID:	141156Click image for larger version

Name:	Skipjack_Run_06_2020_002.jpg
Views:	114
Size:	103.5 KB
ID:	141157

            As far as trim goes, I think I am there.
            Here is the way it is as of today
            Click image for larger version

Name:	Skipjack_Trim_013.jpg
Views:	115
Size:	54.3 KB
ID:	141158
            Magnetic connector and my own pro shaft connector. Magnets were used on the prop shaft connector, but probably not necessary.

            Click image for larger version

Name:	Skipjack_Trim_012.jpg
Views:	111
Size:	85.0 KB
ID:	141159
            Most of the weight was below piston tank. There is a small slice in the bow.

            Click image for larger version

Name:	Skipjack_Trim_011.jpg
Views:	108
Size:	73.5 KB
ID:	141160
            All for that I used was in the aft of the sub.
            Tom,

            Your Skipjack is really nice looking on the water. You did a great job on the finish! I am looking forward to starting on mine, and I will be using your build blog as a guide through the whole build!

            Looks like you had a great time at the lake with your friends to celebrate your shakedown cruise! Thanks for sharing with us!

            Rob

            "Firemen can stand the heat"

            Comment


            • Thank you!
              I cannot take credit for the paint job or a majority of the assembly, Rob, that was David Merriman's handiwork. I added some "stuff" and got it running. That I can take credit for.
              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


              • Looks great Tom! Nice run!

                Comment


                • Thanks Ken!
                  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


                  • That looks good Tom, i wish i had such clear water nearby, how did your ballasttank preform?

                    Manfred.
                    Fertig zum unterwasser.

                    Comment


                    • The ballast tank ran very well! The only issue I have is my battery pack. For some reason, if the pack gets squeezed too much, it will cut off which happened after it ran for an hour. I may redesign it or get rid of the plastic holders and put the contacts on the bulkheads.

                      I look forward to getting this out again and seeing what it can do or better put how long it can run. Right now I am adding decals and will finish the exterior.
                      I do like a piston system.
                      Last edited by trout; 06-28-2020, 06:49 PM.
                      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


                      • I need to apologize first about this video, I was playing with speed and depth so doing two things at once was not my gifting.
                        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


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

                          Comment


                          • Nice, wish I had a clear lake like that here in NJ

                            Comment


                            • Click image for larger version  Name:	Skipjack_2020_901.jpg Views:	0 Size:	50.8 KB ID:	141847 Mostly finished with exterior. Decals added and Matte coat finished.
                              It took a little very fine sanding to remove some minor issues.

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                              Click image for larger version

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                              To finish, I need to work on wiring the lights and then I can move onto the next sub.
                              Peace,
                              Tom
                              Last edited by trout; 07-19-2020, 02:48 AM.
                              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


                              • I like the paint job, I cant tell if there is weathering or not due to the glare?

                                Comment

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