How does the centrifugal advance work?

Centrifugal advance is a mechanism used in ignition systems, particularly in older internal combustion engines, to automatically adjust the ignition timing based on engine speed. As the engine RPM increases, weights attached to a spring-loaded mechanism are thrown outward due to centrifugal force, causing the ignition timing to advance. This adjustment helps optimize engine performance and efficiency, ensuring that the spark plug fires at the right moment for effective combustion. It allows for smoother acceleration and better power delivery across a range of operating conditions.