Posted: Wed Nov 25, 2009 1:59 pm
yo I think the diaphragm idea can be redeemed, think about pressure washers they can produce several thousand psi in hydraulic pressure, in fact even the cheapest (under $100) electric ones produce more than 1000psi which pimpmann is trying to reach, the two easiest ways I can think of to convert the hydraulic pressure into equal pneumatic pressure are:
a)inject the hydraulic source into a sealed tank of air, thus compressing the air inside. however a cheap large volume tank that can handle such pressure is hard to find, draining the water may take some time, and when using it to fill a chamber you face the challenge of trying to fill the tank as much as possible, without over filling
b)build a diaphragm system, the control valve could be controlled by a timing circuit although it isn't very efficient, you could figure out how to put a momentary switch in there
a)inject the hydraulic source into a sealed tank of air, thus compressing the air inside. however a cheap large volume tank that can handle such pressure is hard to find, draining the water may take some time, and when using it to fill a chamber you face the challenge of trying to fill the tank as much as possible, without over filling
b)build a diaphragm system, the control valve could be controlled by a timing circuit although it isn't very efficient, you could figure out how to put a momentary switch in there