2-cycle to 4-cycle

The physical property of model 4-cycle motors have long been preventing me from proceed to the field, because I was advocating in a lighter and powerful 2-cycle motor with Tuned Pipe. But, some thing happened at Yao airport, I was standing just under the landing phase, I head some impressive sound of Cessna motor at very near position. It was so good not as to be compared and the situation was similar with that of the my first experience that I hard the Whistle of SL at very near distance in Kyoto Umenokouji over 10 years ago. The affair had enough capability to change my mind thoroughly from 2-cycle motor and 4-cycle one. The motor sound while operation is one of an indispensable element to enjoy model airplane flight, so I realize. Now, I have several 4-cycle model motors at hand, sum are from my friend and others are from YaHoo auctions. The works to change motors would be continued for the time being.
The saddle of my bicycle was torn and destroyed it's performance by a mischievous crow before long. I shall punish it!