Cyclone Power Technologies, Inc. (fka CYPW)

[dotell]

talk to Cyclone- they have test results. As far as pistons vs turbine, I think you're missing the point about a heat regenerative engine. There are many, many reasons the Cyclone would match favorably in a comparison. Especially in versatility and a way less expensive engine to manufacture. A turbine would work better perhaps but only in a narrow set of operating constraints. Don't forget a Cyclone can operate effectively without a transmission, starter motor, petroleum lubrication, complicated ignition and fuel delivery system. All of this is just my opinion.