It's not an "internal" combustion engine -- it's an "external" combustion engine. The article is vague or misleading on that point.

The video would have been much better if we could have seen the engine work. I think many people who read PopSci are also interested in the details. How is the 'cyclone' generated in the combustion chamber? How is the steam pumped? What does it sound like? What are the 'green' implications? (It runs on 'any' fuel -- does that just mean gasoline and ethanol, or does it include diesel and wood?) He said there's no oil. Don't the pistons still need to be lubricated in some way, or is the steam a kind of lubricant?

I know answers to all these questions would require a longer article, but a few of them could have been answered without much extra text or video.

It's a great item however and Popsci.com is free, so I'm not really complaining. Just suggestions.

How about giving us a better idea of the power output--the 20 lb. propane canister size unit apparently develops enough horsepower for a lawnmower--oh, wait, it doesn't really say that.

But, the question is, how big a unit (approximately) would be needed for a car (and what kind of car?)?

Randy Kramer

You really had to pay attention due to the poor quality video.

The deionized water acts as a lubricant.
The unit they were looking at was a 300HP truck engine. It looked like it was a bit bigger then the average big block. Or maybe the size of a eighteen wheeler engine but I don't think so.

But in any case, Popsci should think about sending the camera guy back to high school. That video was terrible.

Those are great questions. If you have the time to log in, read and post these questions, then maybe you could go to http://www.cyclonepower.com. The site answers all the questions you have in-depth. I have been following this company and its tech. for some time now. It is very interesting.

It is more than difficult to beleive that the US Navy does not know steam engines. It is even more difficult to beleive the heating of water to the temperature stated. It is possible, but with an enormous penalty is fuel. The heating of 1 pound of water is the equivelent to 1BTU. A bearing material and no friction, and water as a lubicant just seem to be a lot of perfect.
We are sure of one thing, a laborotory is a lab. A lot of experimental starts have been attempted. With the appropriate results.

Harry is on to something here, we've know for years the power of steam and even superheated stream that is used industrialy. In the last decade we have seen leaps and bounds in engine technology, metal technology, and metallurgist, have made great strides in new materials. I think Harry's engine is a display of the technology.

Yes the video was poor and yes Harry was vague in his discription of the engine. However, if you invented this seemingly new hi-tech steam engine, and in explaining it, trying not to give away patented ideas of it's running condition, and explaining it's running theory to people that only know and are exposed to old principles and theory
then you to would limit the information given about your product as well.

A steam engine is an absolutely legitimate power plant, and much more efficient than an ICE. If one were to pay attention to the video, one would learn that this engine runs at a much LOWER temperature than an ICE. Remember, water boils at only 212 degrees F. Modern bearing materials make it possible for the superheated water to act as the lubricant. And because superheated steam generates nearly 100% torque, the engine does not have to rely on high speed rotation, the cause of much of the heat in an ICE. Because of the lower running temperature this motor is able to do without oil lubrication, radiator and coolant, and really much of exhaust system, not to mention, because of the tremendous torque steam generates, it needs no transmission.

Really this motor is just an update of Doble's steam engine from the 20s, see: http://www.jaylenosgarage.com/video/video_player.shtml?vid=213453

I had the great honor of getting to meet Harry a couple years ago at his shop down in Fla. At the time he was building the prototype you see in the video. As he said in the video, it is able to run on anything that can burn. At the time he was using citrus oil pressed straight out of orange peel. It will burn any other type of sustainable oil as well, soy, corn, flax, potato, and yes, hemp, not to mention gasoline, kerosene, diesel, and even hydrogen.

it would be a great replacement for todays ICE. It uses far fewer resources than the current transportation standard, and is infinitely more flexible than an ICE no matter what GM tells you. I'm glad to see Harry is finally getting the recognition he deserves out of this project. Spread the word.

I wonder how much water it leaks. Sealing is always an issue with this type of engines. Also, didn't he say it uses deionized water. Deionized water dissolves a lot of things, including engine parts.

Ron S.
Why would a car be too small to contain a steam engine big enough to move it when a gigantic heavy train, plus cars, is capable of plenty speed (in steam trains of yesteryear)