@thesis{thesis, author={Firdaus Firdaus}, title ={Analisa Dampak Kerenggangan Celah Elektroda Busi Terhadap Performa Motor Bakar 4 Langkah Pada Sepeda Motor 125 CC}, year={2017}, url={http://eprints.polbeng.ac.id/8683/}, abstract={This research aims to determine the influence of spark plug electrode gap on the performance of motor gasoline rotary engine with different speeds (rpm). In experiment used Engine Test Bed, where the machine is placed on a pad that is connected to the engine output shaft with a shaft daynotes. Parameters that measured in this study are the power, Torque and BMEP. The spark plug used in this research was CAMPION type RG4HC. From the result of this research can be seen that the maximum torque at the spark plug electrode gap 1.0 mm occurs the average 3.000 rpm to 9000 rpm rotation. Maximum power also occurs at the spark plug electrode gap 1,0 mm.} }