CVT chains have become widely used in vehicles because the slip between parts is very small. which enables efficient power transmission. However. the motion caused by the pins of the CVT chain entering and leaving the pulleys one after another during the power transmission process results in periodic motion of the whole chain. https://www.spidertattooz.com/Simply-Delightful-Layer-Cake-by-Sherri-Chelsi-Moda-Precuts/