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How to Align a GP780 Gyro With a Trex 450

The GP780 gyro helps maintain a radio-controlled (RC) helicopter's stability, making it a significant component in a fully functional aircraft. These small devices work to keep the helicopter level, and to return it to center after banking. Learn how to align your GP780 gyro with the T-Rex 450 to ensure optimum performance.

Instructions

- 1
  Use the rudder stick (the right joystick) to set the status LED to green by moving the joystick over to change the color of the LED.
- 2
  Move the helicopter clockwise while it is powered on and stationary on the ground. Observe the rotor compensation, which is controlled by the gyro. If the rudder corrects itself and moves counterclockwise, move on to the next step; but, it it continues to move clockwise, hold the SET button for two seconds until the status LED begins flashing. Press the SET button until NOR/REV LED illuminates. Use the rudder stick on your transmitter to change from Normal to Reverse or vice versa.
- 3
  Press and hold the SET button for 2 seconds until the status LED blinks. Press the SET button until the limit LED is illuminated. Move the rudder stick left until the tail pitch slider reaches its maximum point, then move the rudder stick until the pitch slider is as far to the right as possible.
- 4
  Press and hold the SET button for 2 seconds until the status LED starts blinking. Press the SET button until delay LED illuminates. Move the rudder stick left until the status LED turns red, indicating it is set up for the T-Rex helicopter.

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