revell VIIc

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  • He Who Shall Not Be Named
    Moderator
    • Aug 2008
    • 12256

    #91
    Originally posted by satlite440
    it seems fine now time will tell..i worry more about how it will vent water/air...

    It will vent air ..... ONCE!

    But, all subsequent dives attempts with a wet deck the air will not be able to escape the superstructure. Water surface tension will bridge those long, narrow slots with water and the deck won't vent through the slots when you flood the SD.

    Therefore, you are compelled to open up big (no smaller than 1/8" diameter) holes in the deck to vent the hull adequately.

    Water won't scale for you -- there's an apparent viscosity increase with reduction of model size. Hello, Doctor Reynolds!

    I have spoken! So let it be written! (insert crack-of-thunder sound here).

    David
    Who is John Galt?

    Comment

    • redboat219
      Admiral
      • Dec 2008
      • 2735

      #92
      How about applying a surfactant to the underside of the deck to break up the water tension, like a detergent.

      Or maybe even some petroleum jelly.
      Make it simple, make strong, make it work!

      Comment

      • He Who Shall Not Be Named
        Moderator
        • Aug 2008
        • 12256

        #93
        The patrolium will leach into the paint as it works its way to the outside of the boat. What a god-awful mess! That don't work. Guess how I know!
        Who is John Galt?

        Comment

        • alad61
          Commander
          • Jan 2012
          • 476

          #94
          Yeah. Been there, done that... The thing is styrene is a oil derivative as is petrolium jelly. Drop a piece of spur into a cup of petrol... Pretty soon no sprue. Though not as quick or radical the jelly will do something similar as it morphs with the styrene. As David said YUCK!!
          Last edited by alad61; 04-29-2013, 02:39 AM.
          Cheers,
          Alec.


          Reality is but a dream...
          But to dream is a reality

          Comment

          • vital.spark
            Commander
            • May 2010
            • 274

            #95
            I actually sanded the underside of the VII deck smooth, removing everything but the overlaps then sprayed a smooth coat of 2K. My feeling was that if there was nothing there to catch and trap bubbles, so much the better.

            Comment

            • trout
              Admiral
              • Jul 2011
              • 3545

              #96
              vital.spark, did you add any additional holes to vent air? If so where did you place them?
              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

              • redboat219
                Admiral
                • Dec 2008
                • 2735

                #97
                Originally posted by alad61
                Yeah. Been there, done that... The thing is styrene is a oil derivative as is petrolium jelly. Drop a piece of spur into a cup of petrol... Pretty soon no sprue. Though not as quick or radical the jelly will do something similar as it morphs with the styrene. As David said YUCK!!
                ok. Wonder if sticking a small bar of soap below deck will help break up the tension?
                Make it simple, make strong, make it work!

                Comment

                • reddevil
                  Commander
                  • Jun 2009
                  • 346

                  #98
                  I reinforced mine with plastic beams below and had no structural problems with it. regarding air or water trapped under deck, there wasn't any problem at all with water when diving; you can see some tension with it when surfacing. And with air, the main problem is the bubble trapped under deck's rearmost part, where there aren't any slot. Click image for larger version

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                  Attached Files
                  Last edited by reddevil; 04-29-2013, 06:30 AM.

                  Comment

                  • Albion
                    Captain
                    • Dec 2008
                    • 651

                    #99
                    Originally posted by reddevil
                    I reinforced mine with plastic beams below and had no structural problems with it. regarding air or water trapped under deck, there wasn't any problem at all with water when diving; you can see some tension with it when surfacing. And with air, the main problem is the bubble trapped under deck's rearmost part, where there aren't any slot. [ATTACH=CONFIG]19969[/ATTACH][ATTACH=CONFIG]19970[/ATTACH][ATTACH=CONFIG]19971[/ATTACH][ATTACH=CONFIG]19972[/ATTACH][ATTACH=CONFIG]19973[/ATTACH]
                    is that a mini engel tank in there?
                    Next time someone points out it takes 42 muscles to frown, point out it will only take 4 muscles to b1tch slap them if they tell you how mnay muscles you need to smile:pop

                    Comment

                    • redboat219
                      Admiral
                      • Dec 2008
                      • 2735

                      custom job maybe, probably around 250 ml or less.
                      Make it simple, make strong, make it work!

                      Comment

                      • reddevil
                        Commander
                        • Jun 2009
                        • 346

                        No, is a 650 CC normal one. It's an optical effect cause the deck is nearer to the camera and a little bit unfocussed. The ENGEL tank is the one fitted for my AKULA II.
                        Click image for larger version

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                        And the second set of pictures is a mistake made when trying to load the desired ones.
                        Attached Files

                        Comment

                        • reddevil
                          Commander
                          • Jun 2009
                          • 346

                          Hi. AS I've been requested about how I've fitted the stuff inside muy VII C, here I send you some pictures about.
                          Attached Files

                          Comment

                          • redboat219
                            Admiral
                            • Dec 2008
                            • 2735

                            A bit blurry. Maybe you could repost it.
                            Make it simple, make strong, make it work!

                            Comment

                            • reddevil
                              Commander
                              • Jun 2009
                              • 346

                              I',m sorry, but are not able to upload this and another two in an apropriate size. Keep trying

                              Comment

                              Working...