Stirlingengineforum.com

Yes, it does run. And there are kits in normal price: http://myfordboy.blogspot.com/p/the-essex-hot-air-engine.html By original it was adverted as 1/40th hp engine. Or 1/10hp if double cylinder ? http://books.google.com.au/books?id=iOADAAAAMBAJ&pg=PA656&dq=hot+air+engines&hl=en&sa=X&...

Hi. Does essex engine configuration belongs to beta or gamma type of stirling engine ? http://patentimages.storage.googleapis.com/pages/US723660-0.png For me it looks like more beta, because it is possible to reduce dead volume on compression stroke - power piston can follow into displacer area like...

Back again to work. I have managed to get this piece of software running: http://www.ohio.edu/mechanical/stirling/me422.html And now, i could answer a question of engine geometry. In short - 3 mm gap in heater will work, but will not produce any high usable power or allow regenerator placing without...

Thanks for suggestions. I try to use materials ad technology common to me. I thought about annulus regenerator with filler, but it is way out of my experience - you must have displacer with compression ring to direct air there it mus be. Other way it will go shortest path - along displacer. So - or ...

Yes, i will post some pictures/sketches, it looks that i had finally figured type of engine and possible technologies. Sadly, vermiculite boards are not suitable for displacer, they did not survive pressure swing. For heat exchanger i will try to use corrugated foil and spot welder, i have a mould f...

Gap in displacer should be best compromise - on one side you want big heat transfer so small gap would be best but on the other hand if you have too small gap you have big pressure drop and therefore you loose power. Yes, it is correct from logic side. But - are there any figures of at least maximu...

Flexure at the top of displacer ?

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staska, although my first engines had horizontal displacers, but now I prefer the displacer vertical, in most cases with the hot end at the top, and a ring shaped burner for LPG. if the hot end is at the bottom, an ordinary camp stove burner is ideal, or it can be used with a spirit burner. With th...

It would depend on how you are going to heat your motor as to whether the rubber diaphragm would stand the temperature. I'v looked up silicone rubber. Low strength properties limit silicone to static seal applications, typically not good for dynamic(moving)seals due to friction properties and poor ...

The ALPHA does not have a displacer, but a piston on the hot side, you might have problems with a rubber diaphragm at any temperature above about 80*C for extended hours of running, maybe you could design a metal one, but that may have fatigue problems, a piston with a Heylandt Crown attached is a ...

The diaphragm is ok instead of a piston, but it would need to be properly designed, so you would need to make a mould/die to make it with concentric corrigations, you then have to get the right type of rubber, and the cooking time for vulcanizing it, its a wee bit more than a bit of rubber balloon ...

Building a 6" bore power piston/cylinder as smooth as glass is where I freak out. Please read a document called NAS - 2. Japanese fixed this problem by using rubber diaphragm as power piston. Same could be used for displacer, if made from silicone rubber. But i would try to make it from turned...

Hi everybody. I had build some simple stirling engines, fluidynes, in the past, they worked, but they was not power producing. Just a toy. Now i do try to design and build power producing engine in 100-300 watt range. Atmospheric. With rubber power piston as in japan NAS 1 / NAS 2 engines. The point...