Vacuum Engine with Internal Valve

This engine is build using the design and plans by Jan Ridders, ,The Netherlands. Several design changes have been made due to materials at hand, easy mounting/dismounting for cleaning after each run and personal preferences. The engine does not have a prefered rotation direction. At 1:52 the flame is blown out, to demonstrate the ramping down and up after re-lighting. music: Eric Darken, Backroads