Michel, you are working WAY too hard on your design. This is all you need:
The wheel is circular and underwater.
Around the rim are sets of metal plates arranged in pairs.
Each pair of plates has a fixed plate and a hinged plate.
Between the plates are "balloons" filled with air.
The balloons are cross-connected with tubes so air can flow between pairs of them on opposite sides of the wheel.
Theory of operation:
Obviously, the plates will squeeze the air out of the balloons on the right side, as the top plate is hinged so that it can press down on the balloon. On the left side the hinged plate is now the bottom plate, and it falls away from the balloon allowing it to fill with air from it's connected twin. As the wheel spins, air is continuously pumped from the right side of the wheel to the left side. With more buoyancy on the left side, the wheel continues to turn forever.
Simple math involving no more than 5 differential equations proves this works.
There. Now we can close this board down for sure.
