Guru-Z tail blade grip secretThe default angle of the tail rotor is 6 degree when the tail pitch slider is in center position. It gives an offset to the tail rotor to cancel the reaction torque generated by the main rotor within limited moving range. For example, traditional design of tail rotor have a range of angle from -8 degree to +8 degree. Now our design has a range from -2 degree to +14 degree that can maximize the range. The tail rotor does not require so much negative angle due to the existing reaction torque.