Abstract
In this laboratory, to raise the performance characteristic of double, acting type (DA type) six cylinder Stirling engine, it researches. Towards practical application of the Stirling engine, must be to improve the current situation better output than the problem. Include mechanical loss as a problem, we measured the mechanical loss output shaft, yoke, connecting rod, piston and piston ring. We show improvements towards the improvement of the output report data to measure the mechanical loss of the Stirling engine time, was obtained. We will explore how you can easily create a large number of improvements as much as possible also.