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INSTALLING THE MAIN LANDING GEAR

1.   Nuts have been installed at the factory.

2.  Install main landing gear into the fuselage using 

(4)  4mm  x  20mm  socket  head  screws  and  flat 
washers provided in the kit.

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Screw

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150mm

22mm

22mm

I/C FLIGHT GUIDELINES

Made in Vietnam

When  ready  to  fly,  first  extend  the 

transmitter aerial.

Operate  the  control  sticks  on  the 

transmitter  and  check  that  the  control 

surfaces  move  freely  and  in  the 

CORRECT directions.

ALWAYS  land  the  model  INTO  the 

wind, this ensures that the model lands 

at the slowest possible speed.

Switch on the transmitter.

Switch off the transmitter.

Check that the transmitter batteries 

have adequate power.

Switch off the receiver.

Switch on the receiver.

ALWAYS take off into the wind.

Check  that  the  wings  are  correctly 

fitted to the fuselage.

If the model does not respond correctly 

to  the  controls,  land  it  as  soon  as 

possible and correct the fault.

Empty the fuel tank after flying, fuel left 

in  the  tank  can  cause  corrosion  and 

lead to engine problems.

I/C FLIGHT WARNINGS

Always  operate  in  open  areas,  away 

from  factories,  hospitals,  schools, 

buildings and houses etc. NEVER fly 

your aircraft close to people or built 

up areas.

THE PROPELLER IS DANGEROUS 

Keep  fingers,  clothing  (ties,  shirt 

sleeves,  scarves)  or  any  other  loose 

objects that could be caught or drawn 

in, away from the propeller. Take care 

at ALL times.

Keep  all  onlookers  (especially  small 

children and animals) well back from 

the area of operation. This is a flying 

aircraft,  which  will  cause  serious 

injury in case of impact with a person 

or animal.

NEVER fly near power lines, aerials 

or  other  dangerous  areas  including 

airports, motorways etc.

NEVER  use  damaged  or  deformed 

propellers or spinners.

DO  NOT  dispose  of  empty  fuel 

containers on a fire, this can lead to 

an explosion.

NEVER  fly  in  wet  conditions  or  on 

windy or stormy days.

ALWAYS  adjust  the  engine  from 

behind the propeller, and do not allow 

any  part  of  your  body  to  be  in  line 

with the propeller.

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1.    Find  the  hole  on  the  top  of  the  wing  by  taking 

measurements as picture below.

2.  Drill through the mark you make with a 2.5mm 

drill bit (Note: just through the wing joiner).

3.  Secure  the  wing  joiner  using  a  4mm  x  35mm 

wood screw.

Switch

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120mm

BALANCING

1.  It  is  critical  that  your  airplane  be  balanced 

correctly.  Improper  balance  will  cause  your 
plane to lose control and crash.

    THE  CENTER  OF  GRAVITY  IS  LOCATED 

120mm  BACK  FROM  THE  LEADING  EDGE 
OF  THE  WING,  AT  THE  FUSELAGE.  This 
location  is  recommended  for  initial  test  flying 
and trimming. There is a 5mm margin forward 
and  aft.  BALANCE A  PLANE  UPSIDE  DOWN 
WITH THE FUEL TANK EMPTY.

2.  Mount the wing to the fuselage. Using a couple 

of  pieces  of  masking  tape,  place  them  on  the 
top  side  of  the  wing  120mm  back  from  the 
leading edge, at the fuselage sides.

3.  Turn  the  airplane  upside  down.  Place  your 

fingers  on  the  masking  tape  and  carefully  lift 
the plane.

4.  If  the nose of the plane falls, the plane is nose 

heavy.  To  correct  this  first  move  the  battery 
pack further back in the fuselage. If this is not 
possible  or  does  not  correct  it,  stick  small 
amounts of lead weight on the fuselage under 
the  horizontal  stabilizer.  If  the  tail  of  the  plane 
falls,  the  plane  is  tail  heavy.  To  correct  this, 
move the battery and receiver forward or if this 
is  not  possible,  stick  weight  into  the  firewall. 
When  balanced  correctly,  the  airplane  should 
sit  level  or  slightly  nose  down  when  you  lift  it 
up with your fingers. 

LATERAL BALANCE

       After  you  have  balanced  a  plane  on  the  C.G. 

You  should  laterally  balance  it.  Doing  this  will 
help the airplane track straighter.

5. Turn the airplane upside down. Attach one loop 

of  heavy  string  to  the  engine  crankshaft  and 
one to the tail wheel wire. With the wings level, 
carefully lift the airplane by the string. This may 
require two people to make it easier.

6.  If  one  side  of  the  wing  fall,  that  side  is  heavier 

than  the  opposite. Add  small  amounts  of  lead 
weight  to  the  bottom  side  of  the  lighter  wing 
half's  wing  tip.  Follow  this  procedure  until  the 
wing stays level when you lift the airplane.

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Battery

Zip tie

Receiver

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INSTALLING and secure the wing

open and close the canopy

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3d sERVOS

   The large control throws require servos with 

great centering. The digital servos are second to 
none in this department. Digital servos such as 
the Futaba BLS 351 should be used on all 
control surfaces of this airplane for optimum 
performance.  

Aileron Control

15mm 

15mm 

Rudder Control

20mm 

20mm 

Elevator Control

15mm 

15mm 

CONTROL THROWS

1.    We  highly  recommend  setting  up  a  plane  using 

the control throws listed.

2.  The  control  throws  should  be  measured  at  the 

widest point of each control surface.

3.  Check to be sure the control surfaces move in the 

correct directions.

3-D PERFORMANCE SETTINGS

      The  YAK  54  ARF  will  perform  3-D  aerobatics 

easily  if  you  use  the  largest  engines 
recommended within the engine range. If you 
setup your airplane to do 3D maneuvers, you 
will  need  to  be  throttle  conscious;  that  is, 
never  apply  full  throttle  on  straight  and  level 
flying or in dives to prevent flutter.

 Ailerons : 45mm up      45mm down

 Elevator : 35mm up      35mm down

 Rudder  : 45mm right   45mm left    

HIGH RATE (FOR 3D)

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INSTALLING THE WHEEL PANTS

INSTALLING THE RUDDER

    Repeat step 1 - step 2 from the installing aileron 

for the installing rudder.

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6.  Temporarily  position  the  aileron  servo  into  the 

servo  bay.  Drill  a  1.6mm  hole  through  the  four 
mounting  holes  of  the  servo,  drilling  through 
the plywood mounting plate in the wing. Install 
and remove a servo mounting screw into each 
of  the  four  holes.  Insert  a  drop  of  thin  CA  into 
the  holes  to  harden  the  wood.  After  the  glue 
has  cured,  install  the  servo  into  the  servo  bay 
using the hardware that came with your servo. 
Center  the  servo  and  install  a  servo  arm  as 
shown.

7.  Repeat  step  #  1  -  #  6  to  install  the  second 

aileron servo in the opposite wing half. 

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TOOLS AND SUPPLIES NEEDED

• Medium C/A glue
• 30 minute epoxy
• 6 minute epoxy
• Hand or electric drill
• Assorted drill bits
• Modeling knife
• Straight edge ruler

SUGGESTION 

To avoid scratching your new airplane, do not unwrap 
the pieces until they are needed for assembly. Cover 
your  workbench  with  an  old  towel  or  brown  paper, 
both  to  protect  the  aircraft  and  to  protect  the  table. 
Keep  a  couple  of  jars  or  bowls  handy  to  hold  the 
small parts after you open the bag.

NOTE:

1.    Please  trial  fit  all  the  parts.  Make  sure  you  have 

the correct parts and that they fit and are aligned 
properly  before  gluing!  This  will  assure  proper 
assembly.  The  YAK  54 ARF  is  hand  made  from 
natural  materials,  every  plane  is  unique  and 
minor  adjustments  may  have  to  be  made. 
However,  you  should  find  the  fit  superior  and 
assembly simple.

2.  The painted and plastic parts used in this kit are 

fuel proof. However, they are not tolerant of many 
harsh  chemicals  including  the  following:  paint 
thinner, C/A glue accelerator, C/A glue debonder 
and acetone. Do not let these chemicals come in 
contact  with  the  colors  on  the  covering  and  the 
plastic parts.

3.    The  YAK  54 ARF  will  perform  3-D  aerobatics 

easily  if  you  use  the  largest  engines 
recommended within the engine range. If you 
setup your airplane to do 3D maneuvers, you 
will  need  to  be  throttle  conscious;  that  is, 
never  apply  full  throttle  on  straight  and  level 
flying or in dives to prevent flutter.

SAFETY PRECAUTION:

•  This is not a toy.
•  Be sure that no other flyers are using your radio 

frequency.

•  Do not smoke near fuel.
•  Store  fuel  in  a  cool,  dry  place,  away  from 

children and pets.

•  Wear safety glasses.
• The  glow  plug  clip  must  be  securely  attached  to 

the glow plug.

•  Do not flip the propeller with your fingers.
•  Keep loose clothing and wires away from the propeller.

PREPARATIONS

Remove  the  tape  and  separate  the  ailerons 
from  the  wing  and  the  elevators  from  the  stab. 
Use  a  covering  iron  with  a  covering  sock  on 
high  heat  to  tighten  the  covering  if  necessary. 
Apply  pressure  over  sheeted  areas  to 
thoroughly bond the covering to the wood.

•  Do not start the engine if people are near. Do not 

stand in line with the side of the propeller.

•  Make engine adjustments from behind the propeller 

only. Do not reach around the spinning propeller.

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5.  Tie the string from inside the wing to the end of 

the  servo  wire.  Pull  the  servo  wire  through  the 
wing with the string. Tape the servo wire to the 
wing to prevent it from falling back into the wing.

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.  Repeat  these  step  as  installing  the  aileron 

linkage

s (Page 4 and page 5).

.  Repeat  these  step  as  installing  the  aileron 

linkage

s (Page 4 and page 5).

INSTALLING THE THROTTLE SERVO

1.  Install  the  rubber  grommets  and  brass  collets 

into  the  elevator,  rudder  and  throttle  servos. 
Test  fit  the  servos  into  the  servo  tray. Trim  the 
tray if necessary to fit your servos

2.  Mount the servos to the tray using the mounting 

screws provided with your radio system.

INSTALLING THE ELEVATOR SERVO

1.  Remove  the  covering  from  both  size  of  the 

fuselage.

2.  Install two servo to the fuselage as shown.

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Engine side

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5.  Test  fit  the  stopper  assembly  into  the  tank.  It 

may  be  necessary  to  remove  some  of  the 
flashing  around  the  tank  opening  using  a 
modeling knife. If flashing is present, make sure 
none of it falls into the tank.

6.  When satisfied with the alignment of the stopper 

assembly  tighten  the  3mm  x  20mm  machine 
screw  until  the  rubber  stopper  expands  and 
seals the tank opening. Do not over tighten the 
assembly as this could cause the tank to split.

7.  Using a modeling knife, cut 3 lengths of fuel line 

150mm long. Connect 2 lines to the 2 vent tubes 
and 1 line to the fuel pickup tube in the stopper.

8.  Feed  three  lines  through  the  fuel  tank 

compartment and through the pre-drilled hole in 
the  firewall.  Pull  the  lines  out  from  behind  the 
engine,  while  guiding  the  fuel  tank  into  place. 
Push  the  fuel  tank  as  far  forward  as  possible, 
the front of the tank should just about touch the 
back  of  the  firewall.  Blow  through  one  of  the 
lines  to  ensure  the  fuel  lines  have  not  become 
kinked  inside  the  fuel  tank  compartment.  Air 
should flow through easily.

        Do  not  secure  the  tank  into  place  permanently 

until after balancing the airplane. You may need 
to  remove  the  tank  to  mount  the  battery  in  the 
fuel tank compartment.

9.  To secure the fuel tank in place, apply a bead of 

silicon  sealer  to  the  forward  area  of  the  tank, 
where  it  exits  the  fuselage  behind  the  engine 
mounting box and to the rear of the tank at the 
forward bulkhead.

10.  Use  6mm  x  8mm  hardwood  to  secure  the  fuel 

tank in place by CA glue.

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Remove the 
covering

3

INSTALLING THE ELEVATOR LINKAGES

The elevator linkages are assembled as shown below

Collar

4

Masking tape

6

CA glue

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To vent tube

To carburator

To muffler

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CA glue

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Carburator

Engine head

Muffler

FINAL ASSEMBLY

INSTALLING THE SPINNER

.    Install  the  spinner  back-plate,  propeller  and 

spinner cone. The spinner cone is held in place 
using two 3mm x 20mm wood screws.

.      The  propeller  should  not  touch  any  part  of  the 

spinner  cone.  If  it  dose,  use  a  sharp  modeling 
knife  and  carefully  trim  away  the  spinner  cone 
where the propeller comes in contact with it.

INSTALLING THE SWITCH

1.  The switch should be mounted on the fuselage 

side,  opposite  the  muffler,  close  enough  to  the 
receiver  so  the  lead  will  reach.  Use  the  face 
plate  of  the  switch  cut  out  and  locate  the 
mounting holes.

2.  Cut out the switch hole using a modeling knife. 

Use  a  2mm  drill  bit  and  drill  out  the  two 
mounting holes through the fuselage side.

3.  Secure  the  switch  in  place  using  the  two 

machine  screws  provided  with  the  radio 
system.

INSTALLING THE RECEIVER AND BATTERY

1.    Plug  the  servo  leads  and  the  switch  lead  into 

the  receiver.  You  may  want  to  plug  an  aileron 
extension into the receiver to make plugging in 
the  aileron  servo  lead  easier  when  you  are 
installing  the  wing.  Plug  the  battery  pack  lead 
into the switch.

2.  Wrap  the  receiver  and  battery  pack  in  the 

protective  foam  to  protect  them  from  vibration. 
Use a rubber band or masking tape to hold the 
foam in place.

3.  Position  the battery pack  and  receiver  in place 

and using the two zip ties for mounting them as 
the picture below.

4.    Using  a  2mm  drill  bit,  drill  a  hole  through  the 

side  of  the  fuselage,  near  the  receiver,  for  the 
antenna to exit.

Secure
the cowl

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75mm

22mm

22mm

• 2 bender plier
• Wire cutters
• Masking tape
• Thread lock
• Paper towels
• Rubbing alcohol

The elevator linkages are assembled as shown below

.  Repeat these step for the second servo elevator.

MOUNTING THE COWL

1.  Remove the muffler and needle valve assembly 

from the engine. Slide the fiberglass cowl over 
the engine.

2.    Measure  and  mark  the  locations  to  be  cut  out 

for  engine  head  clearance,  needle  valve, 
muffler.  Remove  the  cowl  and  make  these  cut 
outs using a rotary tool with a cutting disc and a 
rotary sanding drum attachment.

3.  Slide the cowl back into place. Align the front of 

the cowl with the crankshaft of the engine. The 
front  of  the  cowl  should  be  positioned  so  the 
crankshaft  is  in  the  middle  of  the  precut 
opening.  Hold  the  cowl  firmly  in  place  using 
several pieces of masking tape.

4.    While  holding  the  cowl  firmly  in  position,  drill 

four  1,6mm  pilot  holes  through  both  the  cowl 
and the side edges of the firewall.

5. 

 Using a 3mm drill bit, enlarge the four holes in 

the cowling.

     Enlarging the holes through the cowl will prevent 

the fiberglass from splitting when the mounting 
screws are installed.

6.  Slide the cowl back over the engine and secure 

it in place using four 3mm x 12mm wood screws.

7.  Install  the  muffler.  Connect  the  fuel  and 

pressure  lines  to  the  carburator,  muffler  and 
fuel filler valve. Tighten the screws completely.

INSTALLING THE THROTTLE

1.  Install one adjustable metal connector through the 

third  hole  out  from  the  center  of  one  servo  arm, 
enlarge the hole in the servo arm using a 2mm drill 
bit to accommodate the servo connector. Remove 
the excess material from the arm.

        After  installing  the  adjustable  metal  connector 

apply a small drop of thin C/A to the bottom nut. 
This  will  prevent  the  connector  from  loosening 
during flight.

2.  Plug the throttle servo into the receiver and turn 

on  the  radio  system.  Check  to  ensure  that  the 
throttle  servo  output  shaft  is  moving  in  the 
correct  direction.  When  the  throttle  stick  is 
moved  forward  from  idle  to  full  throttle,  the 
throttle barrel should also open and close using 
this  motion.  If  not,  reverse  the  direction  of  the 
servo, using the transmitter.

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3.  Slide the adjustable metal connector/ servo arm 

assembly  over  the  plain  end  of  the  pushrod 
wire.  Position  the  throttle  stick  and  the  throttle 
trim at their lowest positions. 

4.  Manually push the carburator barrel fully closed. 

Angle  the  arm  back  about  45  degree  from 
center and attach the servo arm onto the servo. 
With  the  carburator  barrel  fully  closed,  tighten 
the set screw in the adjustable metal connector.

5.  Remove the excess throttle pushrod wire using 

wire  cutters  and  install  the  servo  arm  retaining 
screw.

INSTALL THE AILERONS SERVOS & PUSHRODS

1.    Install  the  servo  in  the  wing  require  the  use  of 

one  305mm  servo  extension  for  each  aileron 
servo.  One  Y-harness  connector  is  required 
and  is  used  to  allow  the  aileron  servo  to  plug 
into  one  slot  in  your  receiver. You  may  have  a 
computer  radio  that  allows  you  to  plug  the 
servos  into  separate  slots  and  then  mix  them 
together  through  the  radio  transmitter.  If  you 
choose  to  mix  them  with  the  radio  rather  than 
the  Y-harness,  refer  to  the  instructions  with 
your particular brand of radio.

2.  Attach the servo extension to the aileron servo. 

Secure  the  connectors  together  using  a  large 
piece  of  heat  shrink  tubing,  tape  or  other 
method for securing the connectors together.

3.  Turn  the  wing  panel  right  side  up.  Using  a 

modeling knife, remove the covering from over 
the precut servo box. 

4.  Using the string as a guide and pass the string from 

the servo opening to the hole in the root of the wing.

    

Note:

 

A weigh tied to a string can be used first, 

then tied to the servo lead to pull it through.

16 mm flat washer

31

INSTALLING THE THROTTLE PUSHROD HOUSING

1.  Place  the  engine  into  the  engine  mount  and 

align  it  properly  with  the  front  of  the  cowling. 
The distance from the firewall to the front of the  
engine thrust washer should  [120mm]

     If your engine is equipped with a remote needle 

valve, we suggest installing it into the engine at   
this time.

2.  When satisfied with the alignment of the engine, 

use  a  pencil  and  mark  the  mounting  hole 
location  onto  the  firewall,  where  the  throttle 
pushrod will exit.

3.  Now, remove the engine. Using a 5mm drill bit, 

drill  holes  through  the  firewall  and  the  forward 
bulkhead at the marks made.

4.    Slide  the  pushrod  housing  through  the  hole  in 

the  firewall,  through  the  hole  in  the  forward 
bulkhead, and into the servo compartment.

5.  Apply a couple of drops of thin C/A to the pushrod 

housing  where  it  exits  the  firewall  and  where  it 
passes  through  the  forward  bulkhead. This  will 
secure the housing in place.

6.    Using  a  modeling  knife,  cut  off  the  nylon 

pushrod housing in front of the servo tray.

!

        After  installing  the  wheel  pant,  apply  a  small 

drop of thin C/A to the bottom nut.

 

!

214mm

1

5

0

m

m

60

INSTALLING THE AILERONS

1.  Test fit the ailerons to the wing with the hinges. 

If  the  hinges  don’t  remain  centered,  stick  a  pin 
through  the  middle  of  the  hinge  to  hold  it  in 
position.

TEMPORARY PIN

TO KEEP HINGE

CENTERED

CA glue

2

2.  Apply six drops of thin CA to the top and bottom 

of each hinge. Do not use CA accelerator. After 
the  CA  has  fully  hardened,  test  the  hinges  by 
pulling on the aileron.

INSTALLING THE HORIZONTAL STABILIZER

1.    Using  a  modeling  knife,  cut  away  the  covering 

from the fuselage for the stabilizer and remove it.

14

2.  Remove the covering from the stabilizer.

When cutting through the covering to remove it, 
cut  with  only  enough  pressure  to  only  cut 
through  the  covering  it's  self.  Cutting  into  the 
balsa structure may weaken it. This could lead 
to possible failure during flight.

15

16

Plastic screw

3.   Attach the wing to the fuselage as picture.

4.   Test the position of the elevator and adjust it as 

shown.

6.  After  the  epoxy  has  fully  cured,  remove  the 

masking  tape  or  T-pins  used  to  hold  the 
stabilizer in place and carefully inspect the glue 
joints.  Use  more  epoxy  to  fill  in  any  gaps  that 
were  not  filled  previously  and  clean  up  the 
excess using a paper towel and rubbing alcohol.

7. Repeat step 1 - step 2 from the installing aileron 

for the installing elevator.

19

5.    When  you  are  sure  that  everything  is  aligned 

correctly,  mix  up  a  generous  amount  of  30 
minute epoxy. Apply a thin layer to the  bottom 
and  to  the  top  of  the  stabilizer  mounting  area 
and to the stabilizer mounting platform sides in 
the  fuselage.  Insert  the  stabilizer  in  place  and 
re-align. 

Double 

check 

all 

of 

your 

measurements one more time before the epoxy 
cures.  Remove  any  excess  epoxy  using  a 
paper  towel  and  rubbing  alcohol  and  hold  the 
stabilizer in place with T-pins or masking tape.

17

18

!

7

9

5.    Repeat  step  1  -  step  4  for  the  second  aileron 

linkage.

2.  Make the same way for the plastic linkball to the 

other side of the pushrod wire.

3.  Plug  the  aileron  servo  into  the  receiver  and 

center the servo. Install the servo arm onto the 
servo. The  servo  arm  should  be  perpendicular 
to the servo and point toward the middle of the 
wing.

4.    Center  the  aileron  and  hold  it  in  place  using  a 

couple  of  pieces  of  masking  tape.  Adjust  the 
linkage until the aileron and the servo arm are 
both centered and then tighten the nut against 
the clevis. Install the plastic linkball to the servo 
arm. Remember use thread locking compound 
to secure.

13

1.    Locate  the  pushrod  wire.  Slide  a  silicon  clevis 

retainer  onto  a  clevis.  Screw  a  M3  nut  and  a 
threaded metal clevis onto the threaded end of 
the wire. Tighten the nut against the clevis and 
then  install  the  clevis  on  the  aileron  control 
horn. 

2.  Secure the control horn into the aileron.

3.  Repeat step # 1 - # 2 to install the control horn 

on the second aileron.

INSTALLING THE AILERON LINKAGES

        The  aileron  linkages  are  assembled  as  shown 

below.

INSTALLING THE CONTROL HORNS

1.    The aileron has a block wood plate for mounting 

the  control  horn.  One  aileron  control  horn  in 
positioned on each aileron. 

M3 nut

Plastic link ball

10

Adjust
the linkages

11

Link ball

M3 nut

12

95mm

22mm

22mm

Remove the covering

8

Plastic washer

Plastic control

3mm Screw

Screw

Flat washer

Flat washer

M3 nut

Aluminum link ball

Servo arm

Plastic link ball

51

6.  Center  the  rudder  servo  using  the  radio  and 

install the servo arm. Attach the metal clevis to 
the rudder servo arm. 

7.  Slide a crimp onto the cable, then pass the cable 

through the threaded cable end. Pass the cable 
back  into  the  crimp  and  use  crimping  pliers  to 
secure the crimp to the cable.

8.  Thread the metal connector to the metal clevis.

9.    Attach  the  clevis  to  the  rudder  servo.  There 

should  be  light  tension  on  each  of  the  wires 
when installed properly.

    

Note:

 

Remember use thread locking compound 

to secure.

52

48

Control horn

Control horn

50

4.  Slide  a  crimp  onto  the  cable,  then  pass  the 

cable  through  the  threaded  cable  end.  Pass 
the cable back into the crimp and use crimping 
pliers  to  secure  the  crimp  to  the  cable.  Guide 
the  cable  into  the  fuselage  to  the  position  for 
the rudder servo. 

2.    The  rudder  has  a  block  wood  plate  for  mounting 

the control horn. Two control horn in positioned 
on both side rudder (left and right).

3.  Install the control horn to the rudder.

5.  Thread the metal connector to the link ball.

47

Control horn

Screw

Control horn

46

Remove the covering

Cable end

Crimp

Aluminum ball

Cable

Metal connector

Plastic ball link

49

45

INSTALLING THE RUDDER SERVO

Install the rudder servo to the fuselage as shown.

INSTALLING THE RUDDER LINKAGES

      The  rudder  is  controlled  by  two  metal  cables. 

Install the rudder linkages and cables as below.

1.  Use a hobby knife to remove the covering from 

the openings for the rudder control cables. 

INSTALLING THE STOPPER ASSEMBLY

1. The stopper has been pre-assembled at the factory.

2.  Using a modeling knife, cut one length of silicon 

fuel  line  (the  length  of  silicon  fuel  line  is 
calculated  by  how  the  weighted  clunk  should 
rest  about  8mm  away  from  the  rear  of  the  tank 
and  move  freely  inside  the  tank).  Connect  one 
end  of  the  line  to  the  weighted  clunk  and  the 
other  end  to  the  nylon  pick  up  tube  in  the 
stopper.

3.    Carefully  bend  the  second  nylon  tube  up  at  a 

45 degree angle (using a cigarette lighter). This 
tube will be the vent tube to the muffler.

4.    Carefully  bend  the  third  nylon  tube  down  at  a 

45 degree angle (using a cigarette lighter). This  
tube will be vent tube to the fueling valve.

       

When  the  stopper  assembly  is  installed  in  the 
tank,  the  top  of  the  vent  tube  should  rest  just 
below the top surface of the tank. It should not 
touch the top of the tank.

!

43

 Ailerons : 15mm up     15mm down

 Elevator : 15mm up     15mm down

 Rudder  : 20mm right  20mm left

LOW RATE

Collar

8mm

4mm collar

8mm screw

4mm axle

Nut

Collar

I n s t r u c t i o n   M a n u a l

Wingspan  : 

1672

mm (65.83 inches)

Length 

1620

mm (63.8 inches)

Weight 

: 4500gr - 5000gr

Engine 

: 120 two stroke

Radio        : 6 channel/ 5 high torque servo
                   and 

1

 standard servo

g

MAIN GEAR ASSEMBLY

(2)   Main gear aluminum 

(2)   75mm diameter wheel

(2)   Set of axle

(4)   4mm x 20mm machine screw

(4)   4mm flat washer

(4)   8mm flat washer

(2)   Fiberglass wheel pant

TAIL WHEEL ASSEMBLY

(1)   Tail wheel bracket w/ wire

(1)   Plate Aluminum

(2)   3mm x 12mm wood screw

(2)   3mm x 20mm machine screw

(2)   Spring

(2)   3mm flat washer

ELEVATOR CONTROL SYSTEM

(2)   Set control horn

(2)   3mm x 45mm screw

(2)   Nylon horn

(2)   M3 clevis

(2)   Nylon ball link

(2)   Aluminum ball

(2)   3mm x 12mm screw

(2)   3mm nut

(2)   3mm x 165mm metal pushrod

(2)   6mm flat washer

1

KIT CONTENTS: We have organized the parts as they come out of the box for better identification 
during assembly. We recommend that you regroup the parts in  the same manner. This will ensure you 
have all of parts required before you begin assembly.

KIT CONTENTS

THROTTLE CONTROL SYSTEM

(1)   1,3mm x 600mm wire

(1)   3,5mm x 350mm nylon 

        pushrod housing

(1)   Metal connector

(1)   4mm x 4mm machine screw

FUEL TANK

(1)   Nylon fuel Tank

(1)   Metal clunk

(1)   Pre - assembled stopper w / 3 tube

MISCELLANEOUS ITEMS

(1)   32mm x 590mm diameter

       aluminum dihedral 

(4)   6mm x 45mm nylon screw

(2)   4mm x 30mm nylon screw

(4)   2.6mm x 10mm wood screw

(1)   Wood plate

(2)   4mm x 35mm wood screw

(2)   8mm flat washer

(1)   Wood box

(4)   Triangular  wooden

(1)   Spinner

(1)   Cowling

(1)   Instruction manual

(1)   Decal

YAK 54

Instruction Manual

RUDDER CONTROL SYSTEM

(1)   Set control horn

(1)   3mm x 50mm screw

(1)   Nylon horn

(1)   M3 clevis

(1)   Nylon ball link

(1)   Aluminum ball

(1)   3mm x 12mm screw

(1)   3mm nut

(1)   3mm x 110mm metal pushrod

(1)   6mm flat washer

AILERON CONTROL SYSTEM

(2)   Set control horn

(2)   3mm x 50mm screw

(2)   Nylon horn

(2)   M3 clevis

(2)   Nylon ball link

(2)   Aluminum ball

(2)   3mm x 12mm screw

(2)   3mm nut

(2)   3mm x 70mm metal pushrod

(2)   6mm flat washer

MOTOR MOUNT ASSEMBLY

(2)   Engine mount

(4)   4mm x 30mm screw

(8)   4mm flat washer

(4)   8mm flat washer

(4)   4mm x 30mm screw

(8)   4mm nut

28

5. Connect the spring.

INSTALLING THE TAIL WHEEL

1.  The tail wheel set.

24

26

27

25

2. Remove the covering.

3. Secure the plate to the rudder.

4. Secure the tail brace to the fuselage.

36

120mm

34

35

Glue with epoxy

Install with OS 120 two stroke

Installing the engine

32

33

150mm

Install with OS 22cc Engine

Содержание YAK54 YAKOVLEV

Страница 1: ...I n s t r u c t i o n M a n u a l Wingspan 1672mm 65 83 inches Length 1620mm 63 8 inches Weight 4500gr 5000gr Engine 120 two stroke Radio 6 channel 5 high torque servo and 1 standard servo g ...

Страница 2: ......

Страница 3: ... 1 1 3mm x 600mm wire 1 3 5mm x 350mm nylon pushrod housing 1 Metal connector 1 4mm x 4mm machine screw FUEL TANK 1 Nylon fuel Tank 1 Metal clunk 1 Pre assembled stopper w 3 tube MISCELLANEOUS ITEMS 1 32mm x 590mm diameter aluminum dihedral 4 6mm x 45mm nylon screw 2 4mm x 30mm nylon screw 4 2 6mm x 10mm wood screw 1 Wood plate 2 4mm x 35mm wood screw 2 8mm flat washer 1 Wood box 4 Triangular wood...

Страница 4: ...ers you will need to be throttle conscious that is never apply full throttle on straight and level flying or in dives to prevent flutter SAFETY PRECAUTION This is not a toy Be sure that no other flyers are using your radio frequency Do not smoke near fuel Store fuel in a cool dry place away from children and pets Wear safety glasses The glow plug clip must be securely attached to the glow plug Do ...

Страница 5: ...uire the use of one 305mm servo extension for each aileron servo One Y harness connector is required and is used to allow the aileron servo to plug into one slot in your receiver You may have a computer radio that allows you to plug the servos into separate slots and then mix them together through the radio transmitter If you choose to mix them with the radio rather than the Y harness refer to the...

Страница 6: ...ainst the clevis Install the plastic linkball to the servo arm Remember use thread locking compound to secure 1 Locate the pushrod wire Slide a silicon clevis retainer onto a clevis Screw a M3 nut and a threaded metal clevis onto the threaded end of the wire Tighten the nut against the clevis and then install the clevis on the aileron control horn 2 Secure the control horn into the aileron 3 Repea...

Страница 7: ... remove it cut with only enough pressure to only cut through the covering it s self Cutting into the balsa structure may weaken it This could lead to possible failure during flight 15 16 Plastic screw 3 Attach the wing to the fuselage as picture 4 Test the position of the elevator and adjust it as shown 5 Repeat step 1 step 4 for the second aileron linkage 13 Screw Flat washer Flat washer M3 nut A...

Страница 8: ...nd rubbing alcohol 7 Repeat step 1 step 2 from the installing aileron for the installing elevator 19 5 When you are sure that everything is aligned correctly mix up a generous amount of 30 minute epoxy Apply a thin layer to the bottom and to the top of the stabilizer mounting area and to the stabilizer mounting platform sides in the fuselage Insert the stabilizer in place and re align Double check...

Страница 9: ...4 4mm x 20mm socket head screws and flat washers provided in the kit 7 YAK 54 Instruction Manual INSTALLING THE WHEEL PANTS 29 30 16 mm flat washer 31 28 5 Connect the spring INSTALLING THE TAIL WHEEL 1 The tail wheel set 24 26 27 25 2 Remove the covering 3 Secure the plate to the rudder 4 Secure the tail brace to the fuselage ...

Страница 10: ...ng a 5mm drill bit drill holes through the firewall and the forward bulkhead at the marks made 4 Slide the pushrod housing through the hole in the firewall through the hole in the forward bulkhead and into the servo compartment 5 Apply a couple of drops of thin C A to the pushrod housing where it exits the firewall and where it passes through the forward bulkhead This will secure the housing in pl...

Страница 11: ...il after balancing the airplane You may need to remove the tank to mount the battery in the fuel tank compartment 9 To secure the fuel tank in place apply a bead of silicon sealer to the forward area of the tank where it exits the fuselage behind the engine mounting box and to the rear of the tank at the forward bulkhead 10 Use 6mm x 8mm hardwood to secure the fuel tank in place by CA glue CA glue...

Страница 12: ...nd throttle servos Test fit the servos into the servo tray Trim the tray if necessary to fit your servos 2 Mount the servos to the tray using the mounting screws provided with your radio system INSTALLING THE ELEVATOR SERVO 1 Remove the covering from both size of the fuselage 2 Install two servo to the fuselage as shown 40 41 Engine side 39 INSTALLING THE ELEVATOR LINKAGES The elevator linkages ar...

Страница 13: ...nting the control horn Two control horn in positioned on both side rudder left and right 3 Install the control horn to the rudder 5 Thread the metal connector to the link ball 47 Control horn Screw Control horn 46 Remove the covering Cable end Crimp Aluminum ball Cable Metal connector Plastic ball link 49 45 INSTALLING THE RUDDER SERVO Install the rudder servo to the fuselage as shown INSTALLING T...

Страница 14: ...r Remove the excess material from the arm After installing the adjustable metal connector apply a small drop of thin C A to the bottom nut This will prevent the connector from loosening during flight 2 Plug the throttle servo into the receiver and turn on the radio system Check to ensure that the throttle servo output shaft is moving in the correct direction When the throttle stick is moved forwar...

Страница 15: ...he switch hole using a modeling knife Use a 2mm drill bit and drill out the two mounting holes through the fuselage side 3 Secure the switch in place using the two machine screws provided with the radio system INSTALLING THE RECEIVER AND BATTERY 1 Plug the servo leads and the switch lead into the receiver You may want to plug an aileron extension into the receiver to make plugging in the aileron s...

Страница 16: ...ing to the fuselage Using a couple of pieces of masking tape place them on the top side of the wing 120mm back from the leading edge at the fuselage sides 3 Turn the airplane upside down Place your fingers on the masking tape and carefully lift the plane 4 If the nose of the plane falls the plane is nose heavy To correct this first move the battery pack further back in the fuselage If this is not ...

Страница 17: ...ment Digital servos such as the Futaba BLS 351 should be used on all control surfaces of this airplane for optimum performance Aileron Control 15mm 15mm Rudder Control 20mm 20mm Elevator Control 15mm 15mm CONTROL THROWS 1 We highly recommend setting up a plane using the control throws listed 2 The control throws should be measured at the widest point of each control surface 3 Check to be sure the ...

Страница 18: ...cially small children and animals well back from the area of operation This is a flying aircraft which will cause serious injury in case of impact with a person or animal NEVER fly near power lines aerials or other dangerous areas including airports motorways etc NEVER use damaged or deformed propellers or spinners DO NOT dispose of empty fuel containers on a fire this can lead to an explosion NEV...

Страница 19: ...s at the slowest possible speed Switch on the transmitter Switch off the transmitter Check that the transmitter batteries have adequate power Switch off the receiver Switch on the receiver ALWAYS take off into the wind Check that the wings are correctly fitted to the fuselage If the model does not respond correctly to the controls land it as soon as possible and correct the fault Empty the fuel ta...

Страница 20: ......

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