This miniature Stirling Cycle Engine measures 7" x 4-1/4" and comes complete with built-in alcohol burner. Red flywheels and chassis mounted on a green base, these all metal beauties silently running at speeds in excess of 1,000 RPM attract attention and create awe wherever displayed. This model comes completely assembled and ready to run. Included is our - Stirling Cycle Engines book by Andy Ross. This publication, the first of its kind, takes the reader on a 160-year tour through the world of Stirling Cycle Engines. The hot air principles of operation are explained in this easily read, lavishly illustrated, 128-page book.Click on picture for large view.