Periscopes on the move ??

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  • u-kater
    Junior Member
    • Mar 2003
    • 57
    #1

    Periscopes on the move ??

    Guys,

    Though I concider myself not to be a nitwit building subs there is one thing I do not seem to comprehend. I'm trying to figure out a clean working gadget to move my periscopes up and down (seperatly if possible) I keep running into problems with watertightness and/or to difficult mechanisms.
    I'm building U-123, a type 9-b early war German sub in 32 scale so its a biggy. I'm also building U-805 type 9-c late war,by building two seperate decks and Ct's, interchangable on one hull.
    Best thing would be that the periscopes stay on the hull when changing decks if you catch my drift. Any "simple" ideas outthere??

    Kind regards
    U-Kater
    Tags: None
    • wingtip
      Member
      • Dec 2004
      • 335
      #2
      you could use the robart

      you could use the robart air retracts for airplanes and use a couple of their tiny cylinders, get the red valve and not the blue valve as the red one is adjustable to slow one cylinder down over the other one...







      this cylinder weighs .6 oz's


      all you need is the small bottle for pressure or could use your own supply if you already have a gas system, and a mini servo to operate the valve....

      http://www.robart.com/




      hope that helps

      somewhere in all my junk i have the small pressure vessle and blue valve which is just one pressure and speed for both cylinders... the red is the one u want

        Comment

        • raalst
          Senior Member
          • Feb 2003
          • 1229
          #3
          consider driving a crude piston

          consider driving a crude piston with a water pump.
          this gives slow movement and lots of power.
          I built one from stock brass tube. It worked nicely, but
          I never put it on a submarine (could not get it
          in the tower of my skipjack, which was already glued
          on the hull)

          Regards,
          Ronald

            Comment

            • jim shearing
              Junior Member
              • Mar 2003
              • 11
              #4
              I am also very interested

              [color=#000000]I am also very interested in getting periscopes to extend and retract..so a couple of questions ]

                Comment

                • wingtip
                  Member
                  • Dec 2004
                  • 335
                  #5
                  i think you could do

                  i think you could do both... the cylinders are mostly machined from aluminum.. or you could put a rubber bellows on them just as for pushrods....

                  it was just an idea...

                    Comment

                    • u-kater
                      Junior Member
                      • Mar 2003
                      • 57
                      #6
                      Dear all,

                      The tips I got

                      Dear all,

                      The tips I got on my question should do the trick. Since I have some time to experiment I'll try to figure out what tip works the best. Thanx for the support, it was most helpfull.
                      Have a nice Christmas and all the best for 2005!!!

                      Kind regards
                      U-Kater

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