GP 900 Manual

The GP900 programming is almost identical to the 3GX except it has no DIR menu.
It is imperative that you adjust the tail rotor control rod in rate mode so the model hovers without rudder input.
If you use two Spektrum satellite receivers, you must use channel 7 to control gyro gain. Channel 5 operates the governor.
Keep your rudder travel set at 100% until after you complete the setup. Sometimes the Align units won't respond to the rudder commands unless the travel is at 100%.
After setup, use the rudder travel adjust to control the pirouette rate.

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