What Causes the Abnormal Noise in a Motorcycle's Small Sprocket?

[McSebastian]

Due to the small sprocket and the rear large sprocket not being aligned on the same parallel line, the small sprocket and the chain generate abnormal noise during rotation. Here are specific details about the motorcycle's small sprocket: 1. Location: The small sprocket on a motorcycle refers to the chain sprocket on the engine, which is mostly installed on the left side of the engine, i.e., the front small wheel in the drive sprocket assembly, while the one on the rear wheel is called the large sprocket. 2. Function: The small sprocket on a motorcycle helps reduce energy consumption. When the throttle is closed, the rear wheel continues to move forward using the motorcycle's inertia, automatically disengaging from the sprocket on the energy-saving flywheel and the transmission system, thereby effectively reducing resistance.