Servo Adjustment - Horizon Hobby Blade AH-64 Apache Instruction Manual

The current gain value for the selected parameter is
indicated on the Flight Log screen and by the angle of the
swashplate (forward or backward) as shown in the table
at the right.
Move the cyclic stick forward or backward to adjust the
gain value. Moving the stick forward will increase the gain
value. Moving the stick backward will decrease the gain
value.
It is always best to adjust one gain at a time. Make small
adjustments (5% or less) and test fl y the model to evaluate
the adjustments that were made.
If you would like to reset the current gain value to the
default value of 100%, move and hold the rudder stick full
right for 1 second. The swash will level on the pitch axis,
indicating a 100% gain setting.

Servo Adjustment

Your helicopter was setup at the factory and test fl own.
The servo adjustment steps are usually only necessary in
special circumstances, such as after a crash or if a servo
or linkage is replaced.
Entering Servo Adjustment Mode
1. Lower the throttle stick to the lowest position.
2. Power ON the transmitter.
3. Install the fl ight battery on the helicopter frame, secur-
ing it with the hook and loop strap.
4. Connect the battery connector to the ESC.
5. Place the helicopter on a fl at surface and leave it still
until the orange receiver LED glows solid, indicating
initialization is complete.
Adjusting the Servo Neutral Position
With the model in Servo Adjustment Mode, the control stick
and gyro inputs are disabled and the servos are held in the
neutral position. Check the position of the servo arms to
see if they are perpendicular to the servos.
• If the arms are perpendicular to the servos, no adjust-
ment is necessary.
Exit Servo Adjustment Mode.
• If one or more servo arm is not perpendicular to the
servos, continue the servo adjustment process.
While watching the swashplate servos, apply right cyclic
and release. One of the servos will jump, indicating which
servo is selected. Press right cyclic and release until the
servo that needs to be adjusted is selected.
Saving the Servo Adjustments
Before saving your adjustments and exiting servo adjust-
ment mode, verify the swashplate is level and both main
rotor blades are at 0 degrees. If they are not, make linkage
adjustments as necessary.
1. Lower the throttle stick to the lowest position and
release the sticks.
EN
Swash Position
Full backward
50% backward
Level forward and backward
50% forward
Full forward
Saving the Gain Adjustments
1. Lower the throttle stick to the lowest position and
release the sticks.
2. Press and hold switch I until the swash servos move.
3. Release switch I to save the gain adjustments.
4. Reconnect the main drive motor to the ESC. Your model
is now ready for fl ight.
WARNING: To ensure your safety, always discon-
nect the motor wires from the ESC before perform-
ing the following steps. After you have completed the
adjustments, reconnect the motor wires to the ESC before
attempting to fl y the model.
6. Hold the left stick
to the bottom
left corner and
the right stick to
the bottom right
corner as shown.
7. Hold the bind/panic switch until the swash servos
move.
8. Release the sticks and the bind/panic switch. The
model is now in Servo Adjustment Mode.
9. Proceed to Adjusting the Servo Neutral Position to
make any desired changes.
Once the servo you wish to adjust is selected, move the
cyclic stick forward or backward to adjust the servo neutral
position in the desired direction.
If you would like to reset the current servo to the default
neutral position, hold the rudder stick full right for 1
second.
The range of adjustment is limited. If you are unable to
adjust the servo arm to be perpendicular to the servo, you
must reset the servo to the default neutral position, remove
the servo arm and place it back onto the servo as close to
perpendicular as possible. You may then adjust the servo
neutral position using the forward/backward cyclic stick.
2. Press and hold switch I until the swash servos move.
3. Release switch I to save the servo adjustments.
4. Reconnect the main drive motor to the ESC. Your model
is now ready for fl ight.
All of the settings are stored internally, so your adjustments
will be maintained each time you initialize the model.
14
Gain Value
0%
50%
100%
150%
200%