Hmmmm thats interesting i figured they would all go crazy with no body on them. I dont doubt you though because it seems like every heli is its own beast. My CX2 goes crazy if i try to fly it with the body off. It jerks from side to side exactly like stiracer describes. My heli is sitting at work right now but if I have a few minutes I will go grab it and make a movie of it going crazy. If some do it and some dont could it be the gain setting on the gyro causing it to happen ? I always thought it would fly fine with no body until one day a friend ask me if it could fly with no body. The heli was tuned almost perfect. I took the body off and tried to fly it and it went out of control and wasnt flyable at all.