Radio control model VQA054 User manual

SPECIFICATIONS
Wingspan 59.8 in.
Length 48.7 in.
Electric Motor BOOST 50
Glow Engine .46 2-T / .70 4-T
Radio 5 Channel / 5 Servos
TECHNISCHE DATEN
Spannweiter 1520mm
Lange 1237mm
Elektroantrieb BOOST 50
Verbrennerantrieb 7.5cc 2-T / 11cc 4-T
Fernsteuerung 5 Kanal / 5 Servos
WARNING! This radio controlled model is NOT a toy. If modified or flown carelessly it could go out of controll and
cause serious human injury or property damage. Before flying your airplane, ensure the air field is spacious enough.
Always fly it outdoors in safe areas and seek professional advice if you are unexperienced.
ACHTUNG! Dieses ferngesteuerte Modell ist KEIN Spielzeug! Es ist für fortgeschrittene Modellflugpiloten bestimmt,
die ausreichende Erfahrung im Umgang mit derartigen Modellen besitzen Bei unsachgemäßer Verwendung kann
hoher Personen- und/oder Sachschaden entstehen. Fragen Sie in einem Modellbauverein in Ihrer Nähe um
professionelle Unterstützung, wenn Sie Hilfe im Bau und Betrieb benötigen. Der Zusammenbau dieses Modells ist
durch die vielen Abbildungen selbsterklärend und ist für fortgeschrittene, erfahrene Modellbauer bestimmt.
45 Class
70 Class
2-cycle engine
4-cycle engine
All balsa, plywood construction and almost ready to fly
Or Electric equivalent YAK
C
P
C
C
VQA054 - VQA055
INSTRUCTION MANUAL / Montageanleitung

1.5mm
AB
!
CA
L/R
Assemble left and right
sides the same way.
X
Drill holes using the stated
size of drill
(in this case 1.5 mm Ø)
Use epoxy glue
Take particular care here Hatched-in areas:
remove covering
film carefully
Not included.
These parts must be
purchased separately
Check during assembly that these
parts move freely, without binding
Apply cyano glue
Low setting
SILICON
EPOXY A
EPOXY B
CA
GLUE
Epoxy Glue ( 5 minute type)
Silicon sealer Cyanoacrylate Glue
Minimum 5 channel radio
for airplane with 5 servos
.60 ~.70 - 4 cycle
Silicone tube
Extension for aileron
servo, retract servo.
.46 ~ .50 - 2 cycle
Linkage Stopper x2
(for retract servo)
Epoxy Glue (30 minute type)
TOLLS REQUIRED
Hobby knife
Needle nose Pliers
Phillip screw driver
Awl
Scissors
Wire Cutters
(Purchase separately) Hex Wrench
.........................................................
.........................................................
.........................................................
.........................................................
.........................................................
.........................................................
.........................................................
.........................................................
.........................................................
.........................................................
.........................................................
Sander
Masking tape - Straight Edged Ruler - Pen or pencil - Rubbing alcohol - Drill and Assorted Drill Bits
Read through the manual before you begin, so you will have an overall idea of what to do.
Symbols used throughout this instruction manual, comprise:
(Purchase separately)
Retract landing
gear
Retract servo x1
.Motor control x1 .Aileron x2
.Elevator x1 .Rudder x1 Li-Po Battery, 14.8V, 4500mAH
CONVERSION TABLE
1.0mm = 3/64”
1.5mm = 1/16”
2.0mm = 5/64”
2.5mm = 3/32”
3.0mm = 1/8”
4.0mm = 5/32”
5.0mm = 13/64”
6.0mm = 15/64”
10mm = 13/32”
12mm = 15/32”
15mm = 19/32”
20mm = 51/64”
25mm = 1”
30mm = 1-3/16”
45mm = 1-51/64”
If exposed to direct sunlight and/or heat, wrinkels can appear. Storing the
model in a cool place will let the wrinkles disappear. Otherwise, remove
wrinkles in covering film with a hair dryer, starting with
low temperature. You can fix the corners by using a hot iron.
Bei Sonneneinstrahlung und/oder Wärme kann die Folie erschlaffen bzw. Falten
entstehen. Verwenden Sie ein Warumluftgebläse (Haartrockner) um evtl. Falten aus der Folie
zu bekommen. Die Kanten können Sie mit einem Bügeleisen behandeln. Nicht zuviel Hitze anwenden !
REQUIRED FOR OPERATION (Purchase separately)
BENOTIGTE KOMPONENTEN FUR DEN ABFLUG (Nicht enthalten)
10.5x6 for .40 - 2 cycle engine
11x6 for .46 - 2 cycle engine
12x6 for .60 - 4 cycle engine
12x7 for .70 - 4 cycle engine
12x6 - BOOST 50
BOOST 50
or equivalent.
ESC 70A

L/R
2mm
3x12mm screw
Trial fit the push rod into the wing. Join the pushrod to the retract
gear arm and trial fit the retract into the wing.
After checking that the retract works smoothly, fix the retract on the
wing with 3x12mm screws
1- Using a pencil, mark the center of the brace.
2- Trial fit the wing joiner into one of the wing panels. It should
insert smoothly up to the center line marked above.
3- Slide the other wing half onto the dihedral brace until
the wing panel meet. If the fit is over tight, it may be
necessary to lightly sand the dihedral brace.
4- Check for the correct dihedral angle.
5- Mix approximately 30 minute epoxy and apply a generous amount of epoxy into the wing joiner cavity of one wing half.
6- Coat one half of the dihedral brace with epoxy up to the center line. Install the epoxy-coated side of the dihedral brace
into the wing joiner cavity up to the center line, marking sure that the “V” of the dihedral brace is positioned correctly
7- Do the same way with the other wing half.
8- Carefully slide the wing halves together, ensuring that they are accurately aligned. Firmly press the two halves
together, allowing the excess epoxy to run out. Clear off the excess epoxy.
Center line
X
Aileron servo
X
Included with the
radio set
Plastic control horn
....................2
2x20mm screw
...............4
2mm
Aileron extension cord
X
Secure one end of the aileron
extension cord with adhesive tape
Querruder servo
Nehmen Sie Epoxykleber, um die
Tragflachen fest miteinander zu Verbinden
und streifen Sie den herausquellenden
Kleber nach dem Verbinden mit einem
fusselfreien Tuch SOFORT ab!
1- Retract landing gear / Fahwerk
2- Aileron servo / Querruder servo
3- Joining the wing / Flache
Use epoxy glue to bury the opening
Retract pushrod
3x12mm schraube
Servoverlangerungskabel
Ansicht von unten
Bottom view
Ansicht von unten
Bottom view /
3x12mm screw
................8
Steel clevis
.........2
40mm
15mm
Fahrwerkanlenkgestange
Wing joiner
Tragflachenverbinde
X
WARNING: Please do not clean off the excess epoxy on the wing with strong solvent or pure alcohol, only use
kerosene to keep the colour of your model not fade.

5- Retract servo / Einziehfahrwerk servo
CENTER
WING
SECTION
BOTTOM
Retract servo
/ Retract servo
X
Link the servo and retract gear arm with push rod. Be sure to adjust the stroke so
that the landing gear locks in both up and down position.
2” (~50mm)
1”(25mm)
19/64”
(7.5mm)
8-5/16”(~210mm)
RETRACT PUSHROD (SIDE VIEW)
With the retract and retract servo in the retracted position, mark the position where
each of the pushrod will attach to the servo arm, a small piece of masking tape
works well for this. Cut off the excess length each rod.
(TOP VIEW)
Cut away only
the covering
4- Servo mount / Servohalterung
A
FWU2
FWU1
A
CENTER
WING
SECTION
CA
CA
CA
CA
BOTTOM
Retract servo mount (plywood A,B,C)
Install the retract servo onto the retract
servo mount and secure it in place with
four screw (included with radio set).
Einbau des Servos fur
das Einziehfahrwerk
Instruction how to build in the retracting landing gear
(This Gearis OPTIONAL )
Einbauhilfe bei Anbringen eines
Einziehfahrwerks (Optional
bestellbar; nicht im Baukasten
enthalten!)
Einbau des Servos fur
das Einziehfahrwerk
6- Linkages / Ruderanlenkung
Fahrwerkanlenkgestänge
EINGEFAHREN AUSGEFAHREN
Einziehfahrwerk servohalterung
Schneiden Sie etwas
Folie weg
FWU2 FWU1

3x10mm
screw
ABS gear cover
1.5mm
ABS gear cover
2x6mm
screw
Gear mount
(hard wood)
CA
ABS gear strap
ABS wheel well cover
CA
8- Fixed gear / Landegestange
Ansicht von unten
Bottom view /
..........4
..........8
3x10mm schraube/screw
2x6mm schraube/screw
4mm stellring/collar
..........2
4mm stellring/collar
2mm
Bottom view /Ansicht von unten
ELECTRIC RETRACT
LANDING GEAR
9- Electric retract landing gear / Einziehfahrwerk
RECEIVER
ON
OFF
GEAR
ELECTRIC RETRACT
LANDING GEAR
EXTENDED POSITION
RETRACTED
POSITION
Ply gear mount
plate x 2
Gear mount x 2
2mm
2mm
Main landing gear
Gear mount
1
3x20mm
Nylon gear
strap
2mm
2
3x20mm
Ply gear
mount flat
Square
plastic
2mm
3
3x20mm screw
..........8
3x12mm screw
......16
Nylon gear strap
.......4
3x20mm screw
Wing - bottom view
7- Fixed gear / Starres Fahrwerk
4
Square plastic x 2
3x20mm screw

6x40mm nylon bolt
.........2
6.5mm
Cut away the covering inside
before install the air scoop*
ABS air scoop (part B)
CA
1/4
Using the ABS air scoop (part B) as a template, trace around the outside edge of the ABS air-scoop and then remove it.
Using a sharp hobby knife, cut away the covering inside the lines. Not to cut into the wood.
Apply the ABS air scoop (part B) in place and secure with CA glue.
10- Air scoop / Olkuhlerattrappe
Bottom view /Ansicht von unten
Installing the wing to the fuselage and secure it in place using two 6x45mm nylon bolt.
* WARNING: When removing any covering from the airframe,
please ensure that you secure the cut edge with
CA or similar cement. This will ensure the covering
remain tight.
Wing bolt block
Plastic air scoop
6x40 nylon bolt
(Ply wood)
Plastic mount nut
WING
Cut away the covering inside
before install the air scoop*
ABS air scoop
(part A)
6.5mm
1/4
Using the ABS air scoop (part A) as a template, trace
around the outside edge of the ABS air-scoop and then
remove it.
Using a sharp hobby knife, cut away the covering
inside the lines. Not to cut into the wood.
Apply the ABS air scoop (part A) in place and
secure with CA glue.
11- Air scoop / Olkuhlerattrappe Bottom view /Ansicht von unten
CA
12- Air scoop / Olkuhlerattrappe
* WARNING: When removing any covering from the airframe, please ensure that you secure the cut edge with CA
or similar cement. This will ensure the covering remain tight.

Cut away only
the covering
both side*
B = B’
C = C’
BB’
C C’
ABApply the epoxy
both side
1-Trial fit the vertical stabilizer in place . Check the alignment of
the vertical stabilizer. When you are satisfied with the alignment,
use a pencil to trace around the right and left of the stabilizer
where it meets the fuselage.
2-Remove the vertical stabilizer from the fuselage. Using the
sharp hobby knife, carefully cut away the covering inside the
lines which were marked above.
3-Spread epoxy (30 minute) onto the right and left and bottom
of the vertical stabilizer along the area where the covering was
removed and to the fuselage where the vertical stabilizer
mounts.
4-Install the vertical stabilizer into the fuselage and adust the
alignment as described in steep 1.
Control horn
................1
2x12mm screw
..........2
2.mm
5/64”
14- Vertical stabilizer / Hohenleitwer
3/8” (10mm)
Elev.
Stab.
* WARNING: When removing any covering from the airframe, please ensure that you secure the
cut edge with CA or similar cement. This will ensure the covering remain tight.
Securely glue together. If coming off during flight,
you lose control of your air plane!
13- Horizontal stabilizer / Hohenruder
Cut away only the
covering both side
AB
AA’
90O90O
Cut away only
the covering
both side *
Apply the epoxy
both side
1-Trial fit the horizontal stabilizer in place . Check the alignment
of the horizontal stabilizer. When you are satisfied with the
alignment, use a pencil to trace around the top and bottom
of the stabilizer where it meets the fuselage.
2-Remove the horizontal stabilizer from the fuselage. Using the
sharp hobby knife, carefully cut away the covering inside the
lines which were marked above.
3-Spread epoxy (30 minute) onto the top and
bottom of the horizontal stabilizer along the
area where the covering was removed and
to the fuselage where the horizontal stabilizer
mounts.
4-Install the horizontal stabilizer into the fuselage
and adust the alignment as described in steep 1
5-Wipe off any excess epoxy using a paper towel
and kerosene, do not use strong solvent or pure
alcohol to keep the colour of your model not fade.
Allow the epoxy to cure before proceeding to next
step.
Securely glue together. If coming off during
flight, you lose control of your air plane!
BB’
A = A’
B = B’
Vergewissern Sie sich, sauber geklebt
zu haben. Andernfalls konnen Probleme
mit der Flugeigenschaft auftreten!
* WARNING: When removing any covering from the airframe, please ensure that you secure the cut edge with CA
or similar cement. This will ensure the covering remain tight.

15- Elevator / Hohenruder
AB
Apply the epoxy both side
Apply a thin layer of machine oil or petroleum jelly to only the
pivot point of the hinges on the elevator, then push the
elevator and its hinges into the hinge slots in the trailing edge
of the horizontal stabilizer.
When satisfied with the and alignment, hinge the elevator
to the horizontal stabilizer using 5 minute epoxy. Make sure
to apply a thin layer of epoxy to the top and bottom of both
hinges and to inside the hinge slots. Repeat the previous
procedures to hinge the second elevator to the other side of
the horizontal stabilizer.
Hinge
Petroleum jelly
Control horn
................2
2x12mm screw
..........4
2.mm
5/64”
STABILIZER
3/8” (10mm)
Elev.
Stab.
1- Insert the tail wheel pushrod into the hole on the tail gear control
horn (as show).
2- Install the tail wheel control horn in place.
4- Secure the tail wheel control horn in place using a 5/64”(2mm) screw set,
Ensure smooth non-binding movement.
5- Installing the tail wheel hatch (H) in place using a four 5/64x25/64”(2x10mm) self tapping screws.
16- Tail gear / Heckspornrad
1
3
4
5
2
5/64 in.(2mm) I.D collar 2x10mm
screw
...............1
Tail landing gear
..........1
............1
2x3mm screw
............4
2x10mm screw
.................1
Tail wheel control-
horn
2mm I.D collar
3- Instal the tail wheel gear in place.
H
Bottom view /Ansicht von unten
Vergewissern Sie sich, sauber geklebt zu haben. Andernfalls
konnen Probleme mit der Flugeigenschaft auftreten!

17- Electric Motor / Elektromotor
FRONT-VIEW
- Using a plywood motor mounting plate as a template, mark the fire wall where the four holes are to be drilled (1).
5mm
13/64”
! Align the mark on the plywood motor
mount with the mark on the fuselage.
! Align the mark on the plywood motor mount
with the center lines on aluminum motor mount.
- Remove the plywood motor mounting plate and drill a 13/64”(5mm) hole through the fire-wall at each of the four marks
marked (2).
- Using a aluminum motor mounting plate as a template, mark the plywood motor mounting plate where the four holes are
to be drilled (3).
- Remove the aluminum motor mounting plate and drill a 1/8”(3mm) hole through the plywood at each of the four marks
marked (4).
3mm
1/8”
1234
Plywood motor
mounting plate (2pcs)
Aluminum motor
mounting plate
Firewall 127mm
(4-3/4”)
B’
B
B=B’
A
A=A’
A’
TOP-VIEW
SIDE-VIEW
! Engine thrust on balk head
is already adjust at factory
-Attach the aluminum motor mounting plate on to the motor and
secure it in place with four screws ( included with motor set) (7).
-Push the four 5x70mm bolts through the fire-wall as shown (5).
- Reposition the plywood motor mounting plate (2pcs) and secure it
in place with eight 5mm nuts and washers (6).
Note: B=B’(Side-view) and A=A’(Top-view)
-Attach the motor on to the plywood motor mounting plate and
secure it in place with four 3x15mm (1/8x19/32”)
screws(8).
5x70mm.......4
5mm nut.......12
5mm washer...16
3mm screw/nut...4
5
6
7 - 8

AB
A
3.mm
! Engine thrust on balk head
is already adjust at factory
......4 ............4
4x25mm screw Blind-nut 4mm washer
.................4
!
! Engine thrust on balk head
is already adjust at factory
! Align the mark on both mounts
with the center mark on the fire wall
! Align the engine
center with fire wall
marked line
!
5mm
13/64”
20- Engine (four stroke) / 4T Motor
1/8
3mm
1/8
A
A
Determine the angle for
the engine mounts so the
muffler will not contact the
fuselage
19- Engine (two stroke) / 2T Motor
6.5
With hang silencer
With side silencer
(127~128mm)
5” ~ 5-1/32”
B=B’
A
FRONT-VIEW
B
B’
A
B
B’
3x25mm screw
Nut
.............4
...4
A
18- Engine mount / Motortrager
5” ~ 5-1/32”
(127~128mm)
5” ~ 5-1/32”
(127~128mm)

2.5x10mm.....4
1~2mm
Attach the board or transparent plastic on the side of
the fuselage with the adhesive tape as show.
Using a pencil or felt tipped pen trace around the engine
head where it meet the cowl. Cut the opening the board
or transparent plastic for the engine head as marked
above.
Remove the engine and insert the cowl on to the fuselage
so the distance from the fire wall to the front of the cowl is
5” (126 to 127mm) .
Remove the cowl from the fuselage and carefully cut the
opening for the engine head as marked above. Do the
same way with the hole for needle-valve.
Again. Insert the cowl on to the fuselage and secure it in
place with five 2x5mm screws.
127mm
Ruler
Board
Adhesive
tape
1.5mm
1/16”
1.5mm
1/16”
22- Cowling installation
Motorhaube
Battery hatch
Akkuklappe
Magnetic piece
Magnet
X
To muffler
Filler tube
To engine
3x35mm screw
Rubber stopper
21- Fuel tank / Treibstofftank
TOP VIEW Draufsicht

Elevator pushrod
Elevator pushrod
Rudder pushrod
Rudder servo
Elevator servo
Throttle servo
24- Linkages / Ruderanlenkung
NOTE: Place of the servos may be
change depend of engine
(Four-stoke or two-stroke engine)
23- Servo installation
Receiver area
Bottom view /Ansicht von unten
Connector
Connector
............1
............3
Gestangeanschluss
Gestangeanschluss
Rudergestange
Rudergestange
Drosselservo
Seitenruderservo
Hohenruderservo
X
3mm set Screw
2 mm
Elevator pushrod
Rudergestange
Tail wheel pushrod
Battery stand
(3mm plywood)
25- Lipo Battery installation / LiPo Akku
Battery hatch
Akkuklappe
Magnetic piece
Magnet
TOP VIEW
LiPo Battery
Battery stand
Battery hatch
Bottom view /Ansicht von unten
Draufsicht
Bottom view /Ansicht von unten
SIDE-VIEW / Seitenansicht

CA
2mm Screw
26- Canopy / Kabinenhaube
2 mm
5/64
2.x8mm.....4
4-1/4”(107 mm)
Wing center section
DO NOT try to fly an out-of-balance model !
27- Balance / Schwerpunkt
Note: Adjust the location of the
battery pack to achieve this C.G
location.
(A + or - 5mm is fine)
1-3/16”(30) mm
1/4” (6mm)
25/64”(10mm)
1/4” (6mm)
25/64”(10mm)
1-3/16”(30) mm
C
P
C
C
29- Decor / Aufkleber
Note: Cut out the stickers and apply them in the proper area. Do not peel the backing paper off all at once. Peel off one corner of the
backing and cut off with scissors. Arrange sticker on model and when satisfied adhere the corner without backing.
Carefully peel back the rest of the backing while at the same time adhering the rest of the sticker.
Try not to make air bubbles, if there are some, carefully puncture sticker (center of bubble) but not model surface with the tip of the
knife or sharp pin and squeeze out the air. At curves stretch sticker and apply a little heat so that no ceases occur. Cut off the excess
that is produced.
IMPORTANT: Flying your model at these throws will provide you with the greatest chance for successful first flights. If, after you have
become accustomed to the way the Yak flies, you would like to change the throws to suit your taste that is fine. However, too much
control throw could make the model difficult to control, so remember, “more is not always better”.
28- Control surface / Ruderausschlage
AILERON / QUERRUDER
ELEVATOR / HOHENRUDER
RUDDER / SEITENRUDER
All details are subject to change without notice ! Technische Anderungen und Irrtumer vorbehalten !
WARNING: Please do not clean your model with pure alcohol or strong solvent, only use liquid soap with water or use glass cleaner
to clean on surface of your model to keep the colour not fade.
C
P
C
C
VQA055 - Navy blue
VQA054 - Olive