Energy from gravitation

[TinselKoala]

The mistake in your thinking is that, in your illustrated design, you are not using a light weight to raise a heavy weight. You are using a heavy weight to raise a light weight, and yes, the system will 'hang' as you put it, at the position where the center of mass of all the weights together is directly under the axle.
A further mistake is thinking that you can get any energy out of such a system. You can't, because gravity is a conservative force. This means that the Potential Energy of a weight is only dependent on its height, not the path it took to get there. The work available from a weight falling from a certain height, is the same as the work it takes to get it up to that height. Regardless of the path taken. Your device complicates things a little because it has varying weights at varying moment arms, but the result is the same. You get out, what you put in.
Sorry.

[Gravitator]

What I mean with using light weight to lift up heavy weight is described in attach picture. In my understanding in x time all the liquid (e.g. water) have been moved up from B to A. In other words: 100 kg pressure + 100 kg negative pressure moved 10 000 liters (10 000 kg) water. In this the light weight is 100 kg and the heavy weight is 10 000 kg (water).

[TinselKoala]

Of course, as you have drawn it, it will rotate in the other direction as long as the bottom tank is fuller than the top tank. And regardless of this, there is an equilibrium position where both weights push down equally on tanks that are equally full, with the total center of mass either at or below the axle. So the unit will "hang" at that point. This will likely be at the point where the 1-meter connecting tube is close to horizontal. Since you will have another set of tanks and weights mounted at 90 degrees, this will affect the hang point--the backwards thrust from one set of tanks will offset the forwards thrust from the other set, and the device will hang with the connecting tubes at close to 45-225 and 135-315 degrees. Put more sets on, the system still hangs at an equilibrium point.

You can't get over the fact that gravity is conservative. Clever geometries and intricate mechanisms won't help. The only way around this is to either change mass irreversibly (in which case you either run out or fill up, and stop) , or to add energy from outside the gravitating system.

[broli]

TK is right on this one but ignore his other preach about conservative fields. He seems to have forgotten where he is  .

[Gravitator]

My problem seems to be that I'll talk about one part of the system at the time. Maybe this image will help to understand what Im looking after.
The liquid flow will be blocked immediatly after the liquid have been moved from bottom tank to top.

br,
Gravitator