JR Direct Radio XP662 User Manual download pdf (Page 75)

XP662 MANUAL Helicopter

CHAPTER 7: FUNCTIONS (FUNCTION MODE)

•

Helicopter

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. Revolution mixing is for use with

non heading lock gyros only.

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 SCROLL and INCREASE buttons

simultaneously to enter the Function mode.

3. Press the SCROLL 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 CHANNEL and INCREASE buttons

simultaneously to reset the mixing value to 0%. To

change the mixing direction, press the CHANNEL

and INCREASE buttons simultaneously again.

6. Press the SCROLL button to access the

Programmable Mix A function.

7. To exit, press the SCROLL and INCREASE

buttons simultaneously.

Accessing the Revolution Mixing Function

Press the INCREASE and

DECREASE buttons simultaneously to

change the mixing direction.

REVOLUTION MIXING VALUE (0-125%)

MIX

RVU

– 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 (Non-Heading Lock Gyros Only)7.9

Press the SCROLL button

until “RVU” appears on

the screen.

Press the CHANNEL button

to select the up or down

mixing function.

Press the INCREASE or

DECREASE button to adjust

the revolution mixing value.

CHANNEL

SCROLL

INCREASE

DECREASE

ENTER

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JR Direct Radio XP662 User Manual Page 75

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