This is a example of a piston engine. Piston engines use pistons and valves to rotate a shaft. They work by opening a valve to pull a piston upward using the low pressure form the vacuum cleaner. These engines are more complicated than turbine engines because of timing and moving components. to get a piston engine to work you must time the valve to open when you piston is in the furthest down position allowing it to be pulled up then close the valve to let the piston move back down.

Turbine engines are the simpler of the two. A turbine engine only needs a intake a outtake and a turbine. Putting the vacuum up to the out take causes a fan of the turbine to be pull toward it, this repeats over and over very fast causing rotation. Turbine engines often have higher RPMs (rotations per minute) than piston engines because of the lack of moving parts and there for friction.