Stirlingengineforum.com

I only know these bits of info. Helium is used in DEEP scuba diving because it is NOT absorbed by the blood (mostly water) under pressure. During the Apollo program they tested the fuel and oxidizers used in the hypergolic engines (Service and Lunar Excusion Modules) because they were afraid of the ...

Just a thought: If you go with the "horizontal" style and 90 deg separation then you could use a single throw to operate one cylinders power piston and the adjacent cylinders displacment piston. Giving you a total of only 4 crank throws.

OK, I am new here but have been around a while. I think there may be a few issues with the use of 55 gal drums or any other drum for that matter, and a altermative. The problem is the drums are comparativley very thin and to get any real work out of the engine you need to apply significant pressure ...