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[Dingus Mungus]

If both valves are open while the buoyant weight escapes the jettison chamber, the drop tube will fill with water. This happens because of presure balance. The open air offers no resistance to the waters presure due to the water level being higher. You could have a valve at the top of the drop tube to prevent air from escaping, but you would still lose the volume of air that the jettison chamber holds because the buoyant weight itself negates the air that should be there.

As for draining the chamber in to a mine... I'm not sure where you could feasibly do that, but there is a problem with that solution too. Try it on a microscale, if you have a cup of water and you take out a few drops per day and move it to a lower location to collect energy you'll find that it takes more energy then you collect to move the water to it starting level then you'll gain from its fall. Now if you're talking about a constant suply of water to drain then you're much better off looking in to hydro turbines and scrapping the weights.

Overunity wont be found in a new gimmick on an old trick, it requires collecting energy from open system of energy. Examples of open energy systems include: the sun, the currents of air and water that follow natrual cycles, the earths magnetic field, ZPE jitters, heat conversion, magnetic energy exchange, *exotic galvanic chemistry*. Anything that is naturally using energy already that you can latch on to and use that connection to collect power.

[Perpetualmotionman]

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