Nowadays lots of methods are using in textile industry to produce high quality yarns. Most of these methods focus on reducing of yarn breaking and yarn qualities such as tensile, hairiness, twist per meter and its homogeneity. One of these methods that refer to compact spinning systems, is a mechanical method by reshaping on front draft rollers in ring spinning machine and operated for the first time in Textile engineering department of Isfahan University of technology. Effects of applying this method were increasing in yarn quality factors such as higher tensile force, higher breaking strain, having cylindrical twist form and so on. These facts could be because of changes in geometry of spinning triangle and also, decreasing size of the triangle and size of yarn balloon that causes lower yarn tension. In this study due to the effect of variation of spinning triangle on spinning stability and quality of produced yarn, the idea for reshaping on front draft rollers was adopted on a modern machine than the other one that had been used before. Also an electrical method that called signal processing technology and had been operated before in normal yarn producing system of mentioned machine by using of strain gouge, applied to examine yarn balloon tensions on balloon ring. In the continuation of the study results of signal measurements in improved system were compared with results of normal system's measurements, in three fields that they are the effect of pigtails weight, yarn balloon height and displacement of pigtail of yarn balloon tensions. And also it was shown that the yarn balloon tensions in improved spinning system, decreased in comparing with normal system. At the last part a mathematical and mechanical expression for the yarn balloon are suggested. It was shown how the spinning triangle geometry can influence the yarn balloon size and yarn tensions during the spinning process in improved systems.