Roger Butzen, of Texas, built this custom 2-stroke vapor engine in the late 1990s. The engine is on loan to the Miniature Engineering Craftsmanship Museum courtesy of the Engine Collection of Paul and Paula Knapp. Mr. Butzen’s custom 2-stroke engine is 9”-long, 6”-wide, 8”-high, and weighs 10 lbs.
Custom 2-Stroke Vapor Engine
