What is the primary function of the split-ring installed on the axle shaft?

The primary function of the split-ring installed on the axle shaft is to eliminate axle "wind up." When a vehicle accelerates or decelerates, the axle can experience a twisting force due to the torque being applied. This is especially true in vehicles with independent rear suspension where the axle shaft has to accommodate various angles and loads.

The split-ring helps to manage the torsional forces acting on the axle shaft. By allowing a degree of flexibility, the split-ring permits some lateral movement, which alleviates the stress that could otherwise lead to damage or malfunction. This design is crucial for ensuring smoother operation and maintaining the integrity of the drivetrain during changes in speed and load conditions.

The option regarding keeping axle speed constant does not directly relate to the function of the split-ring. While maintaining speed is important for overall vehicle operation, the split-ring specifically focuses on managing torque and preventing excessive wind up.