Stirling engines are powered by the expansion of a gas when heated, followed by the compression of the gas when cooled.
Power this engine with a cup of steaming hot coffee or set it on a plate of ice chips (or a bowl of ice cream) to see it run in the opposite direction. This Engine has been used for educational demos from middle school science classes to United States Naval Academy classes and is a favorite of engineers all over the world! The engine arrives ready to run and spins about 250 rpm on hot coffee or 100 rpm running on ice.
Replacement Diaphragm available below.