Update1:

First experiment was to see if the piston would rise up again if water was added. It works. I added some foam undernead the piston. A one way valve and an airintake will make it able to go up again by itself. When you pour water on top of the piston. It will transfer automaitcally trough the piston head and the whole thing is in starting position again.

I did this to see if the floating would overcome the resistance from the watertight seals, so far ..so good.

Not there yet. I still need to see if this also works when i balance the whole thing out.

My setup is experimental so it goes very slow.. But i'm just testing the concept.


Next stept is to see what the minium weight/pressure is to rise the water to a point above the cylinder.

I'm aiming to balance the piston so that 1 kg will make the difference. ( = 1 liter )