Fake F ing news they are not ENGINES they are MOTORS Idiots
Bingo MOTORS are for fans.
An engine or motor is a machine designed to convert one form of energy into mechanical energy.[1][2] Heat engines burn a fuel to create heat, which is then used to create a force. Electric motors convert electrical energy into mechanical motion; pneumatic motors use compressed air and clockwork motors in wind-up toys use elastic energy. In biological systems, molecular motors, like myosins in muscles, use chemical energy to create forces and eventually motion. But what do I know, being an ENGINEER for 35 years. Drafter for fifty years. HEH HEH I love being SMART.