| dc.description.abstract | CVT (Continuosly Variable Transmission) is an automatic transmission that uses a belt and pulley to obtain varying gear ratios. One of the advantages of a CVT transmission is that it is more practical than a manual transmission. However, CVT has poor acceleration and torque compared to manual transmission. Apart from that, the speed produced by motorbikes with CVT transmissions is not as high as those with manual transmissions. The research aims to analyze the effect of variations in the shape of the roller and secondary pulley spring on the performance of the Vario 125 motorbike, and the effect of variations in the shape of the roller and secondary pulley spring on the performance of the CVT. The limitations of the problem in the research are that it focuses on discussing variations in the shape of rollers and secondary pulley springs, the rollers used in this test are round rollers and sliding rollers, the secondary pulley springs used in this test are 900 rpm and 1200 rpm springs, using a Vario automatic motorbike 125 cc, and uses a Chassis Dynamometer tool. The sliding roller variation with a 1200 RPM spring produces the highest maximum torque and power with values of 9.68 Nm and 9.39 Hp, however this variation produces the lowest peak acceleration point with value of 16.13 kph/s. The round roller variation with a 900 RPM spring produces the lowest maximum torque and power with values of 9.15 Nm and 8.45 Hp, this variation produces peak acceleration with a value of 16.16 kph/s. The round roller variation with a 1200 RPM spring produces maximum torque and power with values of 9.26 Nm and 8.91 Hp, this variation also produces the greatest peak acceleration with a value of 18.56 kph/s. The Sliding roller variation with a 900 RPM spring produces maximum torque and power with value of 9,18 Nm and 8,64 Hp, this variation also produces peak acceleration with value of 17,00 kph/s | en_US |
