Assigning The Gyro Axes - GRAUPNER GR-18 Notice D'utilisation

Assigning the gyro axes

GYRO ASSIGNMENT
>AILERON SERVOS:
DO SETUP:
AILERON:
ELEVATOR:
RUDDER:
Aileron servos: you should enter the value 2 in this line if your model has two aileron servos; in this case the gyro for
channel (servo) 2 also acts on servo 5. If the ailerons are also used as flaperons or speedbrakes, gyro suppression is
based on the sum of both channels.
CAUTION: the servo reverse setting must be the same for both aileron servos, i.e. either both 'normal' or
both 'reverse'. If this is not possible, on no account should you reverse one servo in the transmitter menu.
The only option is to re-install it in the model by turning it round physically.
However, if your model is fitted with programmable servos (e.g. Graupner DES, HVS or HBS types - see
the instructions for the update program 'Firmware_Upgrade_grStudio - then it is possible to reverse the direction of
rotation at the servo itself.
Please read the installation notes on page 22-23 of these instructions. The first step is to define the three gyro axes
and the orientation of the receiver. This is accomplished by switching on the transmitter and model, and selecting 'New
setting: yes' in the receiver's 'Gyro settings' menu.
• Now move the stick for any control surface to full travel in one direction; in the following example we use the aileron
channel.
• The detected axis (aileron) is highlighted (black background). (In the receiver's default state the value for all axes
is shown as '+0'; the axes can also be set manually to '+0'. 0 = inaktiv)
• Now turn the model through at least 45° in the direction corresponding to the stick movement. For example, if you
moved the aileron stick to the left, you must simulate a left turn with the model  move the left wing down through
at least 45°.
• This process defines the one axis and direction; now you must repeat the procedure for the other two axes.
• The gyro axis 1, 2 or 3 is now displayed in the 'Aileron / Elevator / Rudder' display; a negative prefix will appear if
servo reverse is activated.
Once all three axes are defined, the display automatically reverts to 'New setting: no'.
WARNING: once you have completed this procedure, it is absolutely essential to check that all the gyros are
working in the correct direction. This is accomplished by moving the model around all three axes in turn, and
checking the control surface deflections - see diagrams below. You must not fly the model before doing this:
crash hazard!
38
< GYRO ASSIGNMENT
2 >AILERON SERVOS:
DO SETUP:
YES
+2 AILERON :
>ELEVATOR:
+0
-0 >RUDDER:
Model movement Control surface response (seen from the tail)
Model movement Control surface response (seen from the tail)
<
2
NO
+2
+1
-3
ELEVATOR
RUDDER
aileron see next page