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Thought i would post a video of what I have so far. It's a short vid because I could not find my memory card to the camera. I think maybe the stroke is to long. Think I will try a shorter stroke with the same compression ratio. The piston is 3.36 in. and the stroke is 3 in. I also think it has some...

Yes, I agree with you. some cooling is taking place in the piston cylinder. When the gasses expand they are cooled, no doubt about that. I am just saying that if you look at this engine from an enertia point of view that the cooled gas does not contribute much to pulling the piston back in. Enertia...

Tom, I think you are very close. You are explaining a pulse jet without knowing it. When the gas returns to the heat chamber the piston assists in this return. cooling in the piston cylinder is not what causes the piston to be pulled back in... In regard to the Lamina Flow Stirling. (I still haven'...

same here, I agree with some of Tom's conclusions. Pyrex is the last thing you would want to use for a cooling cylinder... My point or idea as far as using Pyrex or possibly ceramic or something non heat conducting is that I think that this type of engine, (Lamina Flow) works on a different princip...

In fact, I think I would try this: http://calypso53.com/stirling/material_2.jpg The reason I think that the engine with a heat conducting power piston cylinder wont run until it gets hot is that once hot the heat in the gas cannot be dissipated. In effect, the heat, once the cylinder gets hot acts a...

...One thing I have noticed is that with all of my attempts the engines did show signs of running but only after the entire engine got extremely hot (piston cylinder too). I have been using all steel construction making sure to use very thin steel for the heat chamber. I now realize that material s...

In other words, it might act not only as a heat regenerator but a "pressure regenerator" at the same time. When you want the heat gone, it would convert the heat into pressure storing it in the "air spring" at the same time expanding the volume of the displacer chamber to lower p...

Tom There is always room for improvement, but as the current regenerators are reported as 95% efficient in terms of heat recovery, there's not much room, so I wish you well with your endeavours. GeoffV Thanks! Well, hmmm... Theoretically mind you, I'm thinking that this regenerator would still not ...

Vamoose, what are you going to use the power from the piezoelectric unit for, and how are you going to utilize it. Its good for making sparks, but as useful as static electricity, or lightning. Ian S C Hmmm... Maybe run it through a transformer, rectifier circuit to step it up to very high voltage ...

Hi Tom, Could one consider 'Piezoelectricity' to utilise the stress/pressure resulting from expansion and contraction of the regenerator? http://en.wikipedia.org/wiki/Piezoelectricity If you were to use a bi-metal regenerator with a piezoelectric polymer (or nanostructures) between the different ma...

OK, thanks. The intent though here is to increase the efficiency of the regenerator. not take it out or reduce the "dead air space". I think that an "elastic" regenerator would absorb and release heat more efficiently, especially if it were composed of that "super-elastic&qu...

Hi Tom, I like it, I wounder what would happen if the nut in the piston was replaced by a magnet, and a coil wound around the cylinder. You would need to make sure that the metal work was non magnetic. Ian S C Look at his other videos. He's gone through several more incarnations of this engine. The...

... I have found that the choke size is very important to achieve the proper lag/delay in pressure change between the two chambers. I am thinking about placing a large diameter valve (light weight) where the choke would be. This got me thinking about something you said earlier The heat tube volume ...

OK, I think the problem or misunderstanding is due to the fact that when I think of a Stirling engine I'm picturing something I can build out of old 16 ounce camp stove propane canisters. (I've got dozens of those laying around). So when you talk about heat exchangers, I'm just scratching my head, &...

Well, I do very much appreciate your input. It's a pleasure. The purpose of a heat engine is to convert heat into work. The more effectively it can do that, the less waste heat there is left over to cause the engine to overheat. Is That a fact. I was thinking of asking you to publish some pictures ...