RPM limiter for ROTAX 914

Hi Kevin,

The propeller pitch and governors (constant speed) essentially function as a rev limiter. When set up and adjusted correctly, they will ensure you don't exceed the maximum 5800 RPM limit.

Both FAA and EASA regulations mandate redundant safety systems to ensure continuous operation in the event of a failure. As a result, engine overspeed protection must be reliable and avoid introducing unnecessary risks. This is why aircraft engines rely on governors rather than traditional rev limiters. Rev limiters, which cut off fuel or ignition, could introduce risks in aviation, especially during critical phases like takeoff or climb, where sudden power loss could compromise safety. Instead, aircraft engines use gradual, controlled systems to manage RPM.