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Help Setting up Moebius Seaview SAS Subriver

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  • Help Setting up Moebius Seaview SAS Subriver

    Acquired this SAS subdriver and fittings kit for the Moebius Seaview from Paul Crozier down in Houston. Click image for larger version

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    For the newbies, this unit is equipped with a low pressure blower which initially scavanges air inside the cylinder to blow the ballast tank. Once the snorkel mast breaks the water surface the partial vaccum inside the cylinder is relieved and air from the surface is used to completely blow the tanks dry.

    The pump has a control board soldered to it. The board comes with a servo lead and what I assume are power leads.

    Is the power lead connected directly to the battery (7.4v) or does it need to be a lower voltage? IIRC these small pumps are rated to about 5v only.

    Also, can one hook up the LPB controller and vent valve servo off of a single channel?

    BTW, is it alright to store a subdriver with the endcaps on for extended periods? Do the o-rings deform over time?
    Click image for larger version

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ID:	173891 Click image for larger version

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    Make it simple, make strong, make it work!

  • #2
    Hard-wire the pump controller to the battery bus. If you're going 11.1-volts, put a 11 Ohm resistor in one of the power wires leading to the controller. If using a 7.4-volt source (which is what you're doing), just hard wire it direct, and don't sweat the small ****.

    You control the entire ballast sub-system from ch-4. Use a Y-connector to gang the LPB pump controller lead and ballast servo lead together onto the receivers ch-4 slot.

    Good practice is to leave the forward and after bulkheads off the cylinder till ready for use.

    Bout God-Damned-Time you finished something!!!!

    David

    Who is John Galt?

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    • #3
      The toggle switch for the battery bulkhead a 1/4" SPST 6A okey? Click image for larger version

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      Last edited by redboat219; 09-17-2023, 09:29 PM.
      Make it simple, make strong, make it work!

      Comment


      • #4
        Originally posted by redboat219 View Post
        The toggle switch for the battery bulkhead a 1/4" SPST 6A okey? Click image for larger version

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        Yup.................................
        Who is John Galt?

        Comment


        • #5
          Couldn't find one with the rubber boot included, so have to order it separately.
          Make it simple, make strong, make it work!

          Comment


          • #6
            Originally posted by redboat219 View Post
            Couldn't find one with the rubber boot included, so have to order it separately.
            Get one of Bob's magnetic switches.
            Who is John Galt?

            Comment


            • #7
              Something interesting I just found out about the Seaview fittings. I always had the impression that the deflector vanes that were meant to counter Seaview's inherent tendency to dive at speed were just straight aerofoil-shaped resin pieces that were simply glued in place at a 5 angle. Click image for larger version

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              Turns out they also have a negative camber.

              Dive plane profile
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              Deflector vane profile Click image for larger version  Name:	20230919_124559.jpg Views:	0 Size:	45.9 KB ID:	173954
              Last edited by redboat219; 09-19-2023, 01:21 AM.
              Make it simple, make strong, make it work!

              Comment


              • #8
                That's right.
                Who is John Galt?

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