How to adjust the PHA-01 when upgraded the geared tail rotor to a direct drive?
Because of this changing from a geared tail rotor to a direct drive, the thrust ratio of the main blades and tail rotors will be changed as well, so you need to adjust the Mixer Gain first then the Gyro Gain. Please check below steps: 1. Hold the helicopter from the bottom with your hand. Add some throttle. Don’t let it fly away, and adjust the Gyro Gain to its minimum point. 2. Still holding the helicopter. Slowly add up the throttle, and adjust the Mixer Gain slowly to the point when the tail rotor is balanced. 3. Put down the helicopter and do the flying test with adding up the speed and slowing down the speed. While flying test, adjust the Gyro Gain if the helicopter shakes a lot. After adjusting the Gyro Gain, slightly trim the transmitter if you want more exquisite results.
