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New project - Neptune - a fantasy boat project

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  • #46
    Any updates herr doktor?
    Make it simple, make strong, make it work!


    • #47
      The WTC and the diving system are working fine. I added a snorkel valve and I just need to add a guidance for the float of the valve. Then everything is ready for trimming.


      • #48
        Any photos?

        Wait, a snorkel valve? I thought this uses a peristaltic pump that fills and empties a tank that vents into the WTC?
        Last edited by redboat219; 12-29-2020, 05:12 AM.
        Make it simple, make strong, make it work!


        • #49
          Yes, the pump vents into the WTC, but: Peristaltic pumps also pump air. If you empty the ballast tank long enough, i.e. too long, the pump will create a vacuum in the WTC. To avoid the vacuum, I've attached a snorkel valve on the WTC that equillizes the pressure between inside and outside when surfaced.


          • #50
            Any updates?
            Make it simple, make strong, make it work!


            • #51
              I've been lazy, but finally I made some final adjustments. As mentioned above, I have added one of David's excellent snorkel valves to the WTC to avoid the creation of a vacuum by the peristaltic pump. I've added a guide rod to the flaot of the valve to dial in its position. Next is trimming.

              Click image for larger version

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              Click image for larger version

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