I crashed a trainer this past weekend due to a bad battery pack. Anyway the Aerostar did two 360 degree 30 degree nose down turns as my son and I watched helplessly before it crashed into a dirt, recently plowed open fileld at about 1/3 throttle. The damage was not that bad. Everything forward of the wing was destroyed but the engine looked okay except for the broken carb spray bar. I later discoved the crank was bent as I was cleaning the engine back at home. The engine was a Webra silverline 40 with an 2 1/4 inch True Turn aluminum spinner with an APC 10/6 prop. Even the prop driver hub was smashed behind the spinner back plate. True turn spinners have a pretty strong and thick backplate. I like the True Turn spinners and have used them in my pattern birds for the last two decades, even crashed a few but never had a bent crank before this. I plan to use plastic in the smaller engines that are evently more prone to bend cranks in a crash.

Bob