What Causes Vibration When Increasing the Throttle on a Motorcycle?

[VonLucy]

Vibration when increasing the throttle on a motorcycle can be caused by the following reasons: Detonation Vibration: Vibration generated by the detonation of the air-fuel mixture in the combustion chamber, with its amplitude synchronized with the engine speed. The vibration is transmitted primarily along the cylinder block's axis toward the crankshaft's rotation center. Motion Inertia: The motion inertia formed by the piston's reciprocating linear motion has a significant mass. Taking the CG150 as an example, when the piston weighs around 193g, the maximum motion inertia of the piston can reach 6.8 kg/cm. The resulting vibration is commonly referred to as first-order motion inertia vibration. Its amplitude frequency matches the engine speed.