VIII) After the flight there are two possible methods of disabling the assigned gain adjusters:
1) Access the GYRO SETTINGS menu, briefly select the two menu points GAIN NORMAL and
GAIN HEADING using the SET button, then release the button again. If you have two separa-
te aileron channels, repeat this procedure for AILERON-A and AILERON-B.
2) Access the INPUT MAPPING menu, and set the assignment for NORMAL GAIN and HEA-
DING GAIN to 0 using the SensorSwitch.
To set up the iGyro for the elevator function, simply repeat the procedure described above for
the ailerons. As a reminder, here is a brief summary of the procedure:
- Assign one or two adjusters for gyro gain.
- Check the adjuster assignment in the GYRO SETTINGS menu for both elevators - if present
on your model.
- Set the Heading gain to 100% and check the direction of gyro effect: when you raise the mo-
del’s tail, both elevators must deflect up. If the elevators respond by deflecting down, set the
direction of effect to REVERSE in the DIRECTION menu point.
- Set both gain adjusters to 0% and move the flight mode switch to 1.
- Check the GPS status.
- Fly the model parallel to the runway at around quarter-throttle, slowly advance the gain ad-
juster for Normal mode until the model just starts to oscillate, then back off the adjuster
slightly until the oscillation ceases again.
- Carry out a pass at maximum speed, and observe whether the model oscillates. If oscillation
occurs, land the model and increase the value for AIRSPEED FACTOR.
- If the model remains stable at top speed, carry out a further pass in order to adjust the gain
value for Heading mode: fly the model straight and level at quarter-throttle, and leave the
elevator stick untouched. Turn up the Heading gain adjuster until the model starts to oscillate,
then back it off again slightly.
- A further pass at top speed will show whether the AIRSPEED FACTOR is adequate.
- Briefly move the flight mode switch to 3 in order to adopt the settings in FM:3 as well as 2.
- The model can now be landed with the iGyro active.
- Disable the assignment of the gain adjusters.
The model is now gyro-stabilised in flight modes 2 and 3 on the aileron and elevator axes.
The rudder requires special treatment: if Heading mode is active on the rudder, the gyro tries
to maintain the former direction of flight when flown through a turn, causing the model to yaw,
and “hang its tail”. For this reason it makes obvious sense to set the Heading gain for rudder to
0% in flight mode 2, and only to activate it in flight mode 3.
The method for setting gyro gain for the rudder is almost the same as for the other primary
control axes: proceed as far as the point entitled “Setting gain for Heading mode” in exactly the
same manner as for the other two axes.
The procedure differs from aileron and elevator in this respect: once Heading gain has been
set, disable the iGyro by switching to flight mode 1, then land the model with the gyro switched
off. However, leave the rotary knob or slider at the new setting.
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