78
XP652 MANUAL Helicopter
CHAPTER 7
:
FUNCTIONS
•
Helicopter (Function Mode)
continued
The revolution mixing function combines tail rotor
input with the throttle/collective function to
counteract the torque created by the main rotor
blades. When properly adjusted, the helicopter will
climb and descend without a tendency to yaw in either
direction.
Since the torque created by the main rotor blades
varies with different throttle/pitch settings, it is
necessary for the tail rotor blades to change pitch at
the same time. The “U” or up mixing adjusts the tail
rotor compensation from the mid to high throttle stick
setting. The “D” or down mixing adjusts the tail rotor
compensation from the mid to the low throttle stick
setting.
Thus, if you were to move the throttle from the low to
high positions, the tail rotor servo will move from the
“D” to the “U” settings.
Revolution Mixing Set-up Procedure
First, set up the helicopter so that it will maintain a
stable hover with the tail rotor trim in the center
position. Next, bring the helicopter into a steady
vertical climb. The body of the helicopter will move in
the opposite direction to the main rotor rotation.
Increase the “U” or up mixing until the helicopter
climbs without the tendency to rotate. At a safe
altitude, reduce the throttle. The helicopter will
descend, and the body will turn in the same direction
as the main rotor blades. Increase the “D” or down
mixing until the helicopter descends without the
tendency to rotate.
1. Turn on the transmitter.
2. Press the MODE and CHANNEL buttons
simultaneously to enter the function mode.
3. Press the MODE button until RVU appears on the
screen.
4. Press the CHANNEL button to select the up or
down mixing function.
5. Press the INCREASE or DECREASE button to
adjust the mixing value of the applicable function.
Press the INCREASE and DECREASE buttons
simultaneously to reset the mixing value to 0%. To
change the mixing direction, press the INCREASE
and DECREASE buttons simultaneously again.
6. Press the MODE button to access the RUDDER
OFFSET function.
7. To exit, press the MODE and CHANNEL buttons
simultaneously.
Accessing the Revolution Mixing Function
–
+
MODE
ENTER
CHANNEL
INCREASE
CLEAR
DECREASE
Press the INCREASE or DECREASE
button to adjust the revolution mixing value.
Press the INCREASE and
DECREASE buttons simultaneously to
change the mixing direction.
Press the MODE
button until RVU
appears on the
screen.
Press the
CHANNEL button
to select the up or
down mixing
function.
REVOLUTION MIXING VALUE (0-125%)
MIX
R V U
– 0
%
MIXING FUNCTION
U = UP
Flashing when throttle/pitch
stick is in the up position.
D = DOWN Flashing when throttle/pitch
stick is in the down position.
INDICATES THE
REVOLUTION MIXING FUNCTION
MIXING DIRECTION
– = RIGHT MIXING
+ = LEFT MIXING
REVOLUTION MIXING
•
Function Mode
7.9
V
