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<t>I think the first problem here is how much an engine like that can cost and how much power can it produce compared to an Steam engine , places like Brazil and the whole South America are very rich in water suply, rivers, I've seen in distant locations watermills generating power to a refrigerator...

<t>I think the first problem here is how much an engine like that can cost and how much power can it produce compared to an Steam engine , places like Brazil and the whole South America are very rich in water suply, rivers, I've seen in distant locations watermills generating power to a refrigerator...

<r>Hi Christopher.<br/> <br/> I think for your eight years old boy , is easier to start from the beginning , showing the principles of pressure and expansion of gases.<br/> I'm not making propaganda of any store but I think the simplest motor is one made with a glass tube and smalls balls inside, yo...

<t>Yes , It is perfectly possible to make a two piston or "alfa type" engine with diaphragms instead of the pistons,but you may find some problems using diaphragms, like erosion of the material of your diaphragm and the loss caused by the expansion of this material not pulling or pushing the power r...

<t>Hi Robert.<br/> <br/> We are working on it in Brazil and we can help you , but would be great if you read a book " making Stirling engines " by Andy Ross. Actually I'm trying to contact him to translate his book to Portuguese and publish it, but I've got no answer yet. If you need any assistance ...