Which Wheel Does Belt Slippage Start From?

[RebeccaLynn]

Belt slippage starts from the smaller pulley (it mostly occurs on the smaller pulley) because the wrap angle of the smaller pulley is smaller than that of the larger pulley. The wrap angle refers to the arc length over which the belt rolls on the pulley. Introduction to elastic slip: Elastic slip is a normal and unavoidable phenomenon caused by the elastic deformation of the belt material, which leads to deformation under force. Slippage is a failure mode of belt transmission, reducing transmission efficiency. It occurs when the force exerted on the belt exceeds its ultimate tensile strength. Reasons for belt slippage in automobiles: Slippage occurs on the smaller pulley due to the calculation formula for the minimum initial tension. The formula shows that the smaller the wrap angle, the greater the required initial tension. Generally, the smaller pulley has a smaller wrap angle, so it requires a higher minimum initial tension. When the initial tension is less than this minimum, slippage occurs.