En control centering, Settings for control horns, First flight preparation – ParkZone PKZU1380 User Manual

Page 7: Adjusting center of gravity (cg), 38mm

Control Centering

Before fi rst fl ights, or in the event of an accident, make
sure the fl ight control surfaces are centered. Adjust linkages
mechanically if control surfaces are not centered. Use of the
transmitter trims may not correctly center the aircraft control
surfaces due to the mechanical limits of linear servos.

1. Make sure control surfaces are neutral when the transmitter controls and trims are centered.
Where possible, transmitter sub-trim must be set to 0.

2. When needed, use a pair of pliers to carefully bend the metal of the linkage (see illustration).

3. Make the U-shape narrower to make the linkage shorter. Make the U-shape wider to make
the linkage longer.

Note: Do not use Sub-Trim to adjust the center position of the servo, and never set Travel Adjust
values above 100%. Ultra Micro servos reach maximum travel at 100%. Increasing the value
above 100% will NOT result in more travel, but can cause the servo to lock and will result in poor
fl ight characteristics or a crash.

Note: Linkages for ailerons are inside nacelles. Aileron linkages are smaller and may never
need adjustment.

Settings for Control Horns

The picture here shows factory settings for linkages on control
horns. After fl ying, if you want more or less control throw,
carefully adjust linkage positions for desired control response.
(Picture not to scale.)

1. Remove and inspect box contents.
2. Read this instruction manual thoroughly.
3. Install the fl ight battery in the airplane

(once it has been fully charged).

4. Bind aircraft to your transmitter.
5. Make sure carbon fi ber control rods

move

freely.

6. Make sure fl ight control surfaces

are

centered.

7. Perform the Control Direction Test with

the

transmitter.

8. Adjust

fl ight controls and transmitter.

9. Adjust battery position for Center of

Gravity

(CG).

10. Perform a radio system Range Check.
11. Find a safe and open area.

First Flight Preparation

Elevator Rudder

Adjusting Center of Gravity (CG)

Install the fl ight battery and do a
check for CG 38mm rearwards from
the leading edge of the wing at the
fuselage.

Adjust CG by moving fl ight battery.

38mm