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Here is a pic of our fish. Made from Dan's concept. Using with paper graph for now, still working on coming up with hardware and software to run it more efficiently.
Greg what are the dimensions of your fish ? What method did you use to secure the transducers in place. Are you using a foward (to the cable) weight to keep it down ?
Charles, The fish is about 5ft long X 4 1/2 inch. The holes for the transducers were machined slightly oversized and then an o-ring grove was cut in as well. The transducers are then installed using a silicone sealer for extra water resistance. Everything inside the fish is sealed and dry.
I don't understand a ""forward (to the cable)""
See if this answers it: The nose cone is machined cole-rolled steel. It also acts as a rock crusher, lol. It too is o-ringed. It weights about 17#s by it's self. It is used as balance weight. The cable rail has several mounting locations. By this you can control or pre-set the attitude of the fish traveling in the water, nose up, nose down, or leval path depending on the particular need at the time.
A faster towing speed would require more nose down attitude to provide a leval view from the transducers at speed.
I had sat on the bottom of the lake for many hours while watching the fish go by for testing and figuring this stuff out leval paths of flight.
I hope this helps you out or at least helps someone.
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