GREAT PLANES YAK-55M Yakovlev, Instruction Manual

14

Apply the Decals

The box photographs show the location of the decals on 
the airplane. Refer to the box for the exact placement of the 
decals. The following tips may be useful for applying them. 

❏ 

1. Remove the decals from the decal sheet. 

❏ 

2. Be certain the model is clean and free from oily 

fingerprints and dust. Prepare a dishpan or small bucket with 
a mixture of liquid dish soap and warm water—about one 
teaspoon of soap per gallon of water. Submerse the decal 
in the soap and water and peel off the paper backing. 

Note: 

Even though the decals have a “sticky-back” and are not the 
water transfer type, submersing them in soap & water allows 
accurate positioning and reduces air bubbles underneath. 

❏ 

3. Position decals on the model. Holding the decals down, 

use a paper towel to wipe most of the water away.

❏ 

4. Use a piece of soft balsa or something similar to 

squeegee remaining water from under the decal. Apply the 
rest of the decals the same way

GET THE MODEL READY TO FLY

Check the Control Directions

❏ 

1. Turn on the transmitter and receiver and center the 

trims. If necessary, remove the servo arms from the servos 
and reposition them so they are centered. Reinstall the 
screws that hold on the servo arms.

❏ 

2. With the transmitter and receiver still on, check all the 

control surfaces to see if they are centered. If necessary, adjust 
the clevises on the pushrods to center the control surfaces.

FULL

THROTTLE

RUDDER

MOVES

RIGHT

ELEVATOR

MOVES DOWN

RIGHT AILERON

MOVES UP

LEFT AILERON

MOVES DOWN

4-CHANNEL RADIO SET UP

(STANDARD MODE 2)

❏ 

3. Make certain that the control surfaces and the throttle 

respond in the correct direction as shown in the diagram. 
If any of the controls respond in the wrong direction, use 
the servo reversing in the transmitter to reverse the servos 
connected to those controls. Be certain the control surfaces 
have remained centered. Adjust if necessary.

Set the Control Throws

To ensure a successful first flight, set up your Yak-55M EP 
according to the control throws specified in the manual. 
The throws have been determined through actual flight 
testing and accurate record keeping, allowing the model 
to perform in the manner in which it was intended. If, after 
you have become accustomed to the way the Yak-55M 
flies, you would like to change the throws to suit your flying 
style, that is fine. However, too much control throw could 
make the model too responsive and difficult to control, so 
remember, “more is not always better.”

❏ 

1. Use a box or something similar to prop up the bottom of 

the fuselage so the horizontal stabilizer and wing will set level.

❏ 

2. Measure the 3D elevator throw first. Hold a ruler 

vertically on your workbench against the widest part 
(front to back) of the trailing edge of the elevator. Note the 
measurement on the ruler. 

These are the recommended control surface throws:

ELEVATOR

LOW RATE

RUDDER

AILERONS

5/16"

[8mm]

5°

Up

5/16"

[8mm]

5°

Down

1-3/4"

[44mm]

20°

Right

1-3/4"

[44mm]

20°

Left

1/2"

[13mm]

8°

Up

1/2"

[13mm]

8°

Down

3D RATE

1-7/8"

[48mm]

34°

Up

1-7/8"

[48mm]

34°

Down

2-1/2"

[64mm]

29°

Right

2-1/2"

[64mm]

29°

Left

1-3/4"

[44mm]

28°

Up

1-3/4"

[44mm]

28°

Down

HIGH RATE

5/8"

[16mm]

11°

Up

5/8"

[16mm]

11°

Down

2-1/8"

[54mm]

25°

Right

2-1/8"

[54mm]

25°

Left

3/4"

[19mm]

12°

Up

3/4"

[19mm]

12°

Down