GRAUPNER MX-12 Programming Manual page 43

System Mode
V-Tail Type Selection
V-tail mixing is available as an option with your mx-12.
V-tail equipped aircraft require two servos.
Connect left servo to the Connect right servo to the
aileron port of the receiver elevator port of the receiver
Accessing and Utilizing the V-Tail Type Selection
1. While the Down and Select keys are pressed,
move the power switch to the ON position to access
the System mode.
2. Press either the Up or Down key until WING TYPE
appears on the LCD.
3. Press the Select key to select the V-Tail function.
4. Press either the (+) or (-) key to turn on the V-Tail
Wing Type function.
5. Connect the servo that controls the left tail control
surface to the elevator (#3) channel in the receiver
and the servo that controls the right control surface
to the rudder (#4) channel in the receiver.
Note: Individual functions like reversing, travel adjust,
dual rates, sub trims etc. are available for each
servo independently.
6. Check to make sure the servos move in the proper
direction. When an input is given from the elevator
stick, they should move in unison to achieve the
proper up/down elevator command. If your servos
do not move in the correct direction, use the Servo
Reversing function to reverse the travel direction.
Note: Each servo's direction is adjusted individually
through the Servo Reversing function. For more
information, refer to the Servo Reversing section
in this manual.
7. Once the servos direction has been set, adjust their
travel direction, travel adjust, dual rates, sub-trim.
Note: The applicable channel's left or right, up or
down travel adjustments can be made individu-
ally. Refer to the Travel Adjust section in this
manual for more information.
8. Relative to the note above, each servo's travel
volume is automatically reduced to 50% of the
operating range. This is to ensure that the servo
does not operate beyond its capabilities. Failure to
observe extreme caution when adjusting the value
for the elevon servos may result in damage to the
servos by over traveling.
Note: Fine adjustments of the V-Tail should be made
in the Dual-Rate function. For more information,
refer to the Dual-Rate section in this manual.
You can also adjust the neutral point of your
V-Tail servos individually using the Sub-Trim
function as described in the Sub-Trim section of
this manual.
9. Press the Down key to access the SWITCH SEL
function.
10. Press the Up key to access the MODEL SEL func
tion.
11. To exit the WING TYPE function, press the Down
and Select keys simultaneously.
System Mode 41