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• If the nose of the helicopter is drifting to the right in hover, you will want to increase the power to the left-hand
motor (spinning the lower main rotor blade) . This is accomplished by turning the “proportional” trimmer pot
counterclockwise (-) .
Note: You must always power down the 3-in-1 unit before making adjustments to the proportional
mix trimmer pot. Any changes made to the trimmer pot will not take effect until the 3-in-1 unit is re-
initialized and re-armed.
Also, you should always center the rudder trim lever on the transmitter after making adjustments to the proportional
mix trimmer pot on the 3-in-1 unit .
Note:
Be sure to use the proper size and type of screwdriver to carefully make adjustments to the trimmer pot .
Use of the improper size and type of screwdriver or too much force can damage the trimmer pot . Also be sure
to take your time when making adjustments to the proportional trimmer pot as it may only require very slight
adjustment to achieve the desired level of performance (less than 1/8 of a turn) .
As the battery output voltage decreases throughout the flight, it may be necessary to make small adjustments to
the rudder trim or rudder control input in order to keep the nose of the helicopter straight . These small adjustments
can be made using the rudder trim lever or rudder control stick and do not require additional adjustments of the
proportional trimmer pot .
Gyro Gain Trimmer Pot Description and Adjustment
The “gain” trimmer pot adjusts the gain setting value of the piezo gyro used to aid in keeping the tail of the
helicopter straight/on heading during flight .
• The gain value is set too high if the tail of the helicopter twitches/bounces quickly from side to side when in
hover . If this is case for your model, reduce the gyro gain in small increments until the tail of the helicopter no
longer twitches/bounces from side to side in hover .
Turn the gyro gain trimmer pot counterclockwise (-) to decrease gyro gain.
• The gain value is set too low when the tail of the helicopter feels “loose” during flight, requiring constant left and
right rudder inputs to maintain heading when in hover . If this is the case for your model, increase the gyro gain in
small increments until few, if any, left and right rudder inputs are required to maintain heading .
Turn the gyro gain trimmer pot clockwise (+) to increase gyro gain.
Note: When adjusting the gyro gain trimmer pot, the changes will take effect without the need to power
down and re-arm the 3-in-1 unit. Please exercise extreme caution when adjusting the gyro gain trimmer
pot with the model armed to prevent personal injury or damage to the model.
Gain Trimmer Pot
