Heli-Max HMXE04 v1.1 - Manual (Page 15)

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Carefully lift up the plastic tab on the C-12 ESC connector,
remove the red pin from the plug, and fold it back over the
wire. Wrap a piece of electrical tape or heat-shrink tubing
around the connector pin and wire. Plug the C-12 ESC into
the GY240 gyro.
Remove the orange wire from the receiver and plug the
GY240 into the same position. Verify the black wire (-) on the
connector is towards the outside edge of the receiver. Now
plug the orange connector into the next available position on
the receiver (channel 5), and align it with the column of
white wires on the other connectors.
Use two tie straps to attach the gyro wires to the frame. Bundle
the wires and ESC together at the front of the helicopter.
On the gyro, set the “AVCS” switch to “ON” and set the “DIR”
switch to “REV”. Set the gain to 60% using the adjustment
dial on the gyro. If necessary, adjust the gain to match your
flying style or desired setup. The typical range of gain is 50%
to 75%.
Review your work and verify that none of the wires can get
caught in the main rotor gear or the swashplate. The
helicopter is now ready for the test flight.
Flight Initialization
If this is your first time flying a heading hold gyro, be sure to
take your time and become accustomed to the new gyro
before jumping into your normal flying routine.
Turn on the transmitter, center the tail rotor trim tab, extend
the antenna, and verify the idle up switch is “OFF” (toward
the back of the transmitter). Connect the flight battery and
allow the gyro 10 seconds to initialize. The helicopter and
tail rotor stick must remain still during this process.
Arming the Tail ESC
The tail motor ESC must be armed before each flight. The
best time to do this is after you place the helicopter on the
ground before taking off.
You will hear three beeps from the tail ESC once the gyro
has initiated. Carefully apply full right tail rotor and you will
hear 4 beeps. Apply full left tail rotor and you will hear
another set of beeps. The tail ESC and motor are now
armed and you are ready to fly. If you need to pick up the
helicopter, firmly hold onto the main frame since the tail
motor could operate at any time. You can hold full left tail
rotor on the transmitter to prevent this from occurring.
Flying
If the tail wants to drift slowly due to wind gusts, your gain
may be set too low. Increase the gain a small amount and
see if performance improves.
If the tail has a tendency to oscillate from left to right, your
gain may be set too high. Reduce the gain and see if
performance improves.
GOOD LUCK AND GREAT FLYING!
Make a copy of this identification tag and put it on or
inside your model.