I have two Spad Debonairs each powered by a TT Pro.46 with an 11x6 MAS prop and they fly great. These planes are surprisingly resilient and can take a real beating. One of my Deb's crashed due to signal loss while flying at about 60' and as it began its descent I said to a friend who was standing next to me, "Well, that plane is history." Surprisingly though, it only suffered a broken prop and engine mount.