Stirling Fan on a one hour endurance run testing the water tank, thermosyphon and makeshift counterweight on the displacer throw. Speed was steady for the whole hour at 302 RPM. Thermosyphon kept the engine cool. A much smaller propane torch was used for this run rather than the MAPP torch used in previous videos. This smaller torch was more than enough to keep the fan running at 302 RPM.
Outstanding
RatkoUSA 11 months ago