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Sounds reasonable to me Gary. A manometer or tube filled with colored water should work for a gauge. 27.7 inches of water per pound. We use inches of water to measure draft (negative) in our furnaces at work (oil refinery) and to monitor our flare system pressure (positive). Very accurate.

Reread my post...I see you did state the size of the power piston. My bad! That's interesting though about the relationship of the crankcase to the displacer. It does seem that compression ratio or whatever it's called in a Stirling would be lower with the larger displacer. I've been thinking that i...

Gary,
How about the power piston, what diameter did you use?

You could use the kitchen counter top underlayment sheet material. I believe it is 1/2" thick and sort of like cement with a fiber mesh inside. You can saw it and drill it using regular tools.

Pretty funny how the wife wasn't impressed...probably painting the kitchen would buy you more of an impression. Ha! Ha! Why can't we just play and tinker around all the time? It all sounds so familiar. Just the other day I engraved a really detailed Eagle in a piece of scrap wood all proud of myself...

Hi, I've drawn up some basic plans to build an Alpha V twin and have considered the same approach (air compressor). I haven't built it yet, but I will eventually. My plan however doesn't use an air compressor, I plan to use 1/4"x6"x6" box steel for the crankcase, 2" pipe flanges ...

Most of the designs I've seen show a "stationary" regenerator usually in the middle 'annular' section of the displacer cylinder wall area. That would be hard to do with a big drum though. So with your 55 gallon drum cylinders you could add some 1" or larger pipe flanges (top and botto...

Hi, Great forum here! I see you are all engrossed in the "Stirling Thing". I don't believe I've ever had so much trouble sleeping as since I started pondering these amazing machines and all their possibilities. I was in the hardware store the other day and spotted an old style metal toilet...