I came across this a few weeks ago
It's looks amazing, so simple, and they have videos of many different models running.
One problem, they don't offer the engine for sale, only the plans, and some hard to find parts. The Youtube page hasn't been visited by the owner in 3 months, so I'm worried that I wouldn't actually get anything at all if I tried to buy the plans.
They are air powered, the air just has steam in it. One of the videos shows steam escaping from vents, but the author says normally you would collect and recycle the steam (makes sense).
I get the feeling that you need to have some tight tolerances with these, particularly with the pistons, but watching the videos I fully understand the principle behind it's operation, and I firmly believe that it is sound and true, not faked.
I don't think any of his demo's were air powered, at least he claims that they are steam operated. The steam can't be seen because it's being recondensed and fed back to the boiler. If he is using an air compressor, it would be a fraud!
Chloe Taylor wrote:
Thanks a lot for describing as to how an actual steam engine should go on and preform its work....