What is synchro balancing of an engine accomplished by?

Synchro balancing of an engine is primarily achieved through the use of counterweights that rotate opposite to the crankshaft. This method helps to counteract the forces generated by the reciprocating motion of the pistons within the engine. When counterweights rotate in the opposite direction, they effectively balance out the forces and vibrations produced by the pistons, leading to smoother operation and reduced wear on the engine components.

The design and placement of these counterweights are critical in achieving the desired balance, allowing the engine to run more efficiently and prolonging its lifespan. By ensuring that the interactive forces are countered appropriately, synchro balancing contributes significantly to engine performance and stability.