"The Big Fitz" Ballast System

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The ballast tank system worked perfect. I set it up  with two bilge pumps, an in and out pump, and 12v power supply. It takes a total of 2 to 3 minutes to fill or empty the 12 gallon tank. I also made the pumps work with the radio, I can operate the pumps while she’s on her way or with an external power source. This option proved to be very cool and very useful. It's a real simple system and here is how I made it.

The tank itself is literally the entire cargo hold pretty much to scale, and water tight for the forward and aft compartments. As the water is pumped in threw the bottom, air from inside the tank bleeds out threw the spar deck drain holes. These holes run from the scale location on the outside of the hull, to the upper most part of the inner ballast tank. NOTE: For my model the ballast tank was to small. Use one inch foam sides to increase the tank volume. 14 to 15 gallons of water are needed for this model.