My Revell VIIC-4 years of fun

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  • anonymous
    • Oct 2025

    #1

    My Revell VIIC-4 years of fun

    I put this video together from various videos I made over the last year so it would feature the boat alone. This was my second boat I built when I started in the hobby and one of BigDave's early RCABS cylinder kits.

    In all this time I have never had a failure of the system or any leaks. I'm still using the same pump. I did loose the port motor to a fishing line snag. And I have replaced the battery once. That's it.

    I continue to run this boat regularly. It's a main stay.

    If you have a video of your type 7 or pictures please post them here. Besides my own I have never seen a video of this boat running. Lets see some more.

    Enjoy the video. some of the quality is poor as a result from pulling the footage from already compressed wmv files.

    Steve

    I built this model 4 years ago using a BigDave's Design RCABS water tight cylinder kit. It has operated flawlessly for all these years. I took some clips from…









  • rick
    Junior Member
    • Sep 2005
    • 132

    #2
    Very nice Steve.....what was the

    Very nice Steve.....what was the music that you used for that clip......? Rick

    Comment

    • Rogue Sub
      Junior Member
      • Jul 2006
      • 1724

      #3
      Are those pictures of it

      Are those pictures of it running fully surfaced?

      Comment

      • anonymous

        #4
        Thanks a lot Rick.

        She it

        Thanks a lot Rick.

        She it not fully on the surface in the videos or pictures. She does sit a bit higher when I inflate the bladders fully. Especially since the new bladder upgrade was added the BigDave came up with. The bladders are in the saddles now and are below the water line not at the deck line anymore.

        For those of you interested in BD's upgrade send him and email. I have had non stop sucess with his cylinder for years now.

        Here's a picture that just shows the placement of the new bladders. Get more details from BigDave. This mod did not require any changes to the WTC.

        Steve

        Comment

        • u-33
          Junior Member
          • Jun 2008
          • 309

          #5
          Nice Steve, it's great when

          Nice Steve, it's great when a boat becomes almost a best friend...the Patrick Henry was the same, worked first time every time, I got to know everyone of his little foibles.

          Here's hoping U-212 will follow suit..

          Good pics, by the way....

          Rich

          Comment

          • anonymous

            #6
            Thanks Rich!

            Steve

            Thanks Rich!

            Steve

            Comment

            • epg800
              Junior Member
              • Mar 2008
              • 10

              #7
              Good job man ! I

              Good job man ! I love it !

              Xin

              Comment

              • anonymous

                #8
                Thanks!!

                Steve

                Thanks!!

                Steve

                Comment

                • Rogue Sub
                  Junior Member
                  • Jul 2006
                  • 1724

                  #9
                  Cmon I remember seeing a

                  Cmon I remember seeing a few of hese things at the regatta 2 yrs ago lets see more pics.

                  Steve, lets see the guts!

                  Comment

                  • u552
                    Junior Member
                    • Aug 2008
                    • 62

                    #10
                    Hi from Madrid. I'm new

                    Hi from Madrid. I'm new in the forum and have a couple of questions about this sub. I got Big Dave's WTC for my VII C but, stupid ignorance of mine, I began to modify things. The result, of course, was disastrous.
                    First of all: Does the sub sits in a real waterline?
                    Second: Where do you place the battery?

                    Comment

                    • bigdave
                      Junior Member
                      • Feb 2003
                      • 3596

                      #11
                      The waterline depends on how

                      The waterline depends on how much weight you keep off of the deck. It has to be light to get maximum waterline.
                      My original version would not quiet get that high but the new twin bladder system will get very close.
                      You only have so much usable air inside of the cylinder to lift the boat.
                      I opted for a simpler easier to use ballast system and cylinder instillation than trying to get the waterline correct.
                      Sometimes you can't have both.
                      BTW- The battery instillation is shown on the CD manual. It goes up in the bow in a rubber balloon. Easy to get to and has never had a problem.
                      Email me if you have more questions. BD.
                      sigpic"Eat your pudding Mr Land"
                      "I ain't sure it's pudden" 20K

                      Comment

                      • JWLaRue
                        Managing Editor, SubCommittee Report
                        • Aug 1994
                        • 4281

                        #12
                        minor point:...it's displacement of the

                        minor point:...it's displacement of the above-the-waterline, not weight.......this can make a big difference!

                        Steve,

                        Great looking Type VIIC and a wonderful example of the simplicity and reliability of the RCABS system.

                        -Jeff
                        Rohr 1.....Los!

                        Comment

                        • bigdave
                          Junior Member
                          • Feb 2003
                          • 3596

                          #13
                          Wasn't that banded back and

                          Wasn't that banded back and forth before.
                          I say if you have two decks of the same displacement and one is made from lead and one from plastic which would be easier to lift with a given amount of air.
                          That is the way I see it.
                          But I have been wrong many times before. BD.
                          sigpic"Eat your pudding Mr Land"
                          "I ain't sure it's pudden" 20K

                          Comment

                          • anonymous

                            #14
                            Thanks Jeff.

                            Steve

                            Thanks Jeff.

                            Steve

                            Comment

                            • JWLaRue
                              Managing Editor, SubCommittee Report
                              • Aug 1994
                              • 4281

                              #15
                              Wasn't that banded back and

                              Wasn't that banded back and forth before.
                              I say if you have two decks of the same displacement and one is made from lead and one from plastic which would be easier to lift with a given amount of air.
                              That is the way I see it.
                              But I have been wrong many times before. BD.
                              Yup......forget when though.

                              By that logic (see above) boats wouldn't float.

                              -Jeff
                              Rohr 1.....Los!

                              Comment

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