szabadonfutó

A szabadonfutó, often translated as freewheel or clutch, is a mechanical device that allows rotation in one direction while preventing rotation in the other. It functions by engaging a mechanism when force is applied in the forward direction and disengaging it when force is applied in the reverse direction. This engagement and disengagement is typically achieved through a system of pawls, ratchets, or cams.

The most common application of a szabadonfutó is in bicycle drivetrains. It is integrated into the rear hub of a bicycle and allows the rider to stop pedaling without the rear wheel continuing to spin. This is essential for braking, coasting, and maneuvering. Without a freewheel, a bicycle would move forward whenever the pedals were turned, even if the rider did not intend to propel it.

Beyond bicycles, szabadonfutók are used in various other mechanical systems. They can be found in roller skates, skateboards, and certain types of industrial machinery. In some instances, they are employed to prevent back-driving forces, such as in winches or hoists where a load should not be able to unwind the mechanism. The specific design and complexity of a szabadonfutó can vary significantly depending on its intended use and the forces it is designed to manage.