F3F 20140514 practice in 鐵鉆山

The F3F season of south wind in Taiwan has begin. It's a sunny day with 12 ~ 15 m/s wind.
I just replace all servos of my three years old Stinger by MKS HV system. The control of the model is more accurate than before. So, the major task is to setup and test the Stinger. The CG is about 96mm and load with about 1 Kg ballast. It's running stable with speed, once the thermal comes, it goes crazy...