This is a video of the flame gulper engine pictured on the “Models” page of my Engineman website. The fuel is alcohol. It was made from plans in the February 1950 issue of Popular Science. Modifications were made to replace the castings originally specified, as I doubt they were available forty-odd years later. My model has run a lot – whenever visitors drop by and at a few exhibitions.
The EXPAND R5090 receptacle is a towed machine that has a