Model Engine Giveaway, Vacuum or Flame Licker, not Hit and Miss

Please go to https://myfordboy.blogspot.com/p/entr... for entry details. Perhaps a little known and novel form of engine. An interesting action. https://en.wikipedia.org/wiki/Vacuum_... Banggood are supplying 2 of these engines for my July giveaway. Entry is free. Full details myfordboy.blogspot.com Link to the engine for purchase option: https://www.banggood.com/custlink/GD3...