Should the forward planes be fixed or mobile? I have seen builders do both on this forum.
I was told once long ago that the aft planes really do all of the work. When the tail lifts the nose angles down. This puts the forward planes at a downward angle and the boat moves under the water. So there is no need for active forward planes.
But I see many builders make their forward planes active.
Which is best? For the avid and very active boat driver? Or for the newb? Or for someone who might only get his boat wet for one or two afternoons a year?
What about the ballast system? I get the feeling that most everyone has moved away from the Propel-powered ballast tanks to a recycling system. With the recycling system your dives are limited to the life left in the battery, right? When the tanks are filled the boat sinks to a state of slight positive buoyancy with "decks awash". Thrust is needed to give the diving planes flow and thus push the boat under water.
Then there is the variable ballast system (whose technical name escapes me at the moment
) In this system a piston alters the displacement of the WTC and thus the amount of water displaced. The boat is able to dive on tanks alone without having to have any thrust from the propeller acting on the diving planes. If calibrated right this system lets the driver "dial in" his depth. The piston moves in x amount and the boat sinks to depth A. The piston moves y amount and the boat sinks to depth B. The only disadvantage to this system would be loss of power or loss of signal. The boat won't naturally surface on its own as with the other system.
Again which is best for the newb, the dabbler or the "professional"?
I have a friend locally whose students built the variable displacement system in high school shop class. (I think an article was posted to the SCR too. How long ago I don't remember.) It worked very well. My friend said that they left the tank submerged for days and saw little leakage at all.
Thank you for reading my post! Please keep your answers simple please. So far I am an armchair admiral. I am finally building my boat even now. I will need to know whether or not to fix my forward planes or leave them mobile.