Nexa P-39 Q/N AIRACOBRA Instruction Manual

Semi scale model
40 Class
52 Class
2-cycle engine
4-cycle engine
RADIO CONTROLED ALMOST READY-TO-FLY ENGINE POWERED ALL BALSA PLANE
Or Electric equivalent
BUILDING INSTRUCTIONS / MONTAGEANLEITUNG
SPECIFICATIONS
Wingspan
Length
Flying weight
Electric Motor
Glow Engine
Radio
Technische Daten
Spannweite
Länge
Fluggewicht
Elektroantrieb
Verbrennerantrieb
Fernsteuerung
1580mm
1160mm
2500g
650 Watt
6,5cc 2T / 8,5cc 4-T
7 Channel / 7 Servos
1580mm
1160mm
2500g
650 Watt
6,5cc 2T / 8,5cc 4T
7 Kanal / 7 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.

CA Thin CA
The rectangular hole on the bottom
of the flap is pre-cut at factory
1-Depending on the position of the linkage, determine the location of aileron control horn.
The horn holes must be perfectly aligned with the axis of articulation.
2-Mark the position of the “foot” of the horn on the aileron. Then, with the drill, make the 2
holes.
3-Install the aileron control horn as shown.
Control horn Alignment
Do the same way with second
wing half.
WING - BOTTOM VIEW
3-Install the aileron and flap servo on the servo mount.
Adhesive
tape
Do the same way with second wing half
WING - BOTTOM VIEW
2- Servo
..........2
2x30mm....4
..........4
....................2
X
P-39 AIRACOBRA
WING - BOTTOM VIEW
X
X
Thread the flap and aileron extension cords into the wing with the existing thread.
1- Servo extension cord
P-39 AIRACOBRA
-Switch on the radio (trims centered)
then mount the ailerons servo horn
in neutral position.
-The servo horn should be
perpendicular to the servo
YES NO
2- Connect the aileron and flap servo cord to the
aileron and flap extension cord.
3- Control horn
P-39 AIRACOBRA
Do the same way with second
wing half.
SILICON
Threadlocker
4- Flap & Aileron linkages
P-39 AIRACOBRA
5A
Slide the landing gear onto the
plywood gear mount and push
the landing gear as shown.
5B
Using the nylon gear strap
as a template, mark the
plywood gear mount where
the four holes to be drill.
Remove the nylon gear
strap and drill a 2mm hole
at each of the four marks
marked.
5C 5D
5E
Attach the ply gear mount
plate to the plywood gear
mount.
5F 5G
Drill a 2mm holes through the
square plastic and ply gear
mount plate.
Secure the ply gear mount
using four 3x20mm screws.
Reposition the nylon gear
strap and secure them in
place using four 3x20mm
screws.
5H
2mm
5- Fixed gear assembling
P-39 AIRACOBRA
TOP VIEW
BOTTOM VIEW
WARNING: Do not put in a large-than recommended engine. A bigger engine does not necessarily mean better performance.
Read through the manual before you begin, so you will have an overall idea of what to do.
This model is highly pre-fabricated and can be built in a very short time. However, the work which you
have to carry out is important and must be done carefully.
The model will only be strong and fly well if you complete your tasks competently - so please work
slowly, accurately and check every joints, maybe apply more glue to be safe.
SAFETY NOTES BEFORE ASSEMBLING
IMPORTANT: Please do not clean your model with pure alcohol or strong solvents, only use liquid soap with water or use glass
cleaner to clean on surface of your model to keep the colour not fade.
2x6mm screw
..........4
....2
...2
4mm collar
2mm
CA
6- Fixed gear installation
P-39 AIRACOBRA
2x6
50mm
7- Fixed gear installation
P-39 AIRACOBRA
CA
Thin CA
Perpendicular
Center line
Using a pencil, mark the center of the brace.
Trial fit the wing joiner into one of the wing panels.
It should insert smoothly up to the center line marked
above.
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.
AB
Coat one half of the dihedral brace with 30 minute epoxy up to
the center line. Install the epoxy-coated side of the dihedral brace.
Apply a generous amount of epoxy into the wing joiner cavity of
one wing half.
Smear epoxy on the wing root as show.
AB
6x20mm
dowel
8- Joining the wing halves
P-39 AIRACOBRA
Step 8A
Step 8B
Step 8C
Step 8D
Step 8E
Step 8F
A
- Position the top and bottom engine mounts to the fire-wall,
using a pencil or felt tipped pen, mark the fire-wall where
the four holes are to be drilled.
A
B
B’
FRONT-VIEW
! Engine thrust on balk head
is already adjust at factory
! Align the mark on both mounts
with the mark on the fuselage
Binder clip
Nylon wing bolt
Rubber band
(both the top
and bottom)
IMPORTANT: 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.
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. Clean off the excess epoxy with paper towel and kerosene.
9- Joining the wing halves
P-39 AIRACOBRA
10- Engine mount
P-39 AIRACOBRA
- Remove the engine mounts and drill a 13/64”(5mm) hole
through the fire-wall at each of the four marks marked.
- Attach the four blind-nut to the fire-wall as show
- Reposition the engine mounts on to the fire-wall
and secure them with four 4x25mm screw
- Position the engine on to the engine mounts so the distance
from the prop hub to the fire wall is 118mm.
- Mark the engine mounting plate where the four holes are to be drilled.
- Reposition the engine on the engine mount beams, aligning it
with the holes. Secure the engine to the engine mount using four
3x25mm screws.
5mm
13/64”
-Remove the engine and drill a 1/8” (3mm) holes through
the beam at each of the four marks make before.
1/8”
3mm
...4
.................4
4x25mm screw
Blind-nut
3x20mm screw
1/8”(3mm) nut
.................4
...4
1/8x5-1/64”
5/32x1”
Firewall
118mm
B’
B
B=B’
-Using a aluminum motor mounting plate as a template,
mark the plywood motor mounting plate where the four
holes are to be drilled.
-Remove the aluminum motor mounting plate and drill a
1/8”(3mm) hole through the plywood at each of the four
marks marked .
3mm
Note: The aluminum motor mounting included with electric
motor set.
5x80mm.......4
5mm nut....................12
5mm washer...............16
3mm screw/nut...4
SIDE-VIEW
11- Engine mount
P-39 AIRACOBRA
12- Electric motor mount
P-39 AIRACOBRA
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
.52-.60 - 4 cycle
10.5x6 for .40 - 2 cycle engine
11x6 for .46 - 2 cycle engine
11X7 for .52 - 4 cycle engine
13X8 for Electric motor.
Silicone tube
Extension for ailerons, flaps,
elevators, rudder servo.
.40-.45 - 2 cycle
OPTIONAL ACCESSORIES
Epoxy Glue (30 minute type)
TOLLS REQUIRED
Hobby knife
Needle nose Pliers
Phillip screw driver
Awl
Scissors Wire Cutters
(Purchase separately)
Hex Wrench
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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.
(Purchase separately)
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 !
Klebstoff
Epoxy-Klebstoff (30min-Typ)
Epoxy-Klebstoff (5min-Typ)
Minimum 7 channel radio
for airplane with 7 mini servos
.Motor control x1 (glow engine)
.Aileron x 2
.Flap x 2
.Elevator x 2
.Rudder x1
G-46 HP Motor
5 cell 4500mAh.
or equivalent.
x7

CA Thin CA
The rectangular hole on the bottom
of the flap is pre-cut at factory
1-Depending on the position of the linkage, determine the location of aileron control horn.
The horn holes must be perfectly aligned with the axis of articulation.
2-Mark the position of the “foot” of the horn on the aileron. Then, with the drill, make the 2
holes.
3-Install the aileron control horn as shown.
Control horn Alignment
Do the same way with second
wing half.
WING - BOTTOM VIEW
3-Install the aileron and flap servo on the servo mount.
Adhesive
tape
Do the same way with second wing half
WING - BOTTOM VIEW
2- Servo
..........2
2x30mm....4
..........4
....................2
X
P-39 AIRACOBRA
WING - BOTTOM VIEW
X
X
Thread the flap and aileron extension cords into the wing with the existing thread.
1- Servo extension cord
P-39 AIRACOBRA
-Switch on the radio (trims centered)
then mount the ailerons servo horn
in neutral position.
-The servo horn should be
perpendicular to the servo
YES NO
2- Connect the aileron and flap servo cord to the
aileron and flap extension cord.
3- Control horn
P-39 AIRACOBRA
Do the same way with second
wing half.
SILICON
Threadlocker
4- Flap & Aileron linkages
P-39 AIRACOBRA
5A
Slide the landing gear onto the
plywood gear mount and push
the landing gear as shown.
5B
Using the nylon gear strap
as a template, mark the
plywood gear mount where
the four holes to be drill.
Remove the nylon gear
strap and drill a 2mm hole
at each of the four marks
marked.
5C 5D
5E
Attach the ply gear mount
plate to the plywood gear
mount.
5F 5G
Drill a 2mm holes through the
square plastic and ply gear
mount plate.
Secure the ply gear mount
using four 3x20mm screws.
Reposition the nylon gear
strap and secure them in
place using four 3x20mm
screws.
5H
2mm
5- Fixed gear assembling
P-39 AIRACOBRA
TOP VIEW
BOTTOM VIEW
WARNING: Do not put in a large-than recommended engine. A bigger engine does not necessarily mean better performance.
Read through the manual before you begin, so you will have an overall idea of what to do.
This model is highly pre-fabricated and can be built in a very short time. However, the work which you
have to carry out is important and must be done carefully.
The model will only be strong and fly well if you complete your tasks competently - so please work
slowly, accurately and check every joints, maybe apply more glue to be safe.
SAFETY NOTES BEFORE ASSEMBLING
IMPORTANT: Please do not clean your model with pure alcohol or strong solvents, only use liquid soap with water or use glass
cleaner to clean on surface of your model to keep the colour not fade.
2x6mm screw
..........4
....2
...2
4mm collar
2mm
CA
6- Fixed gear installation
P-39 AIRACOBRA
2x6
50mm
7- Fixed gear installation
P-39 AIRACOBRA
CA
Thin CA
Perpendicular
Center line
Using a pencil, mark the center of the brace.
Trial fit the wing joiner into one of the wing panels.
It should insert smoothly up to the center line marked
above.
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.
AB
Coat one half of the dihedral brace with 30 minute epoxy up to
the center line. Install the epoxy-coated side of the dihedral brace.
Apply a generous amount of epoxy into the wing joiner cavity of
one wing half.
Smear epoxy on the wing root as show.
AB
6x20mm
dowel
8- Joining the wing halves
P-39 AIRACOBRA
Step 8A
Step 8B
Step 8C
Step 8D
Step 8E
Step 8F
A
- Position the top and bottom engine mounts to the fire-wall,
using a pencil or felt tipped pen, mark the fire-wall where
the four holes are to be drilled.
A
B
B’
FRONT-VIEW
! Engine thrust on balk head
is already adjust at factory
! Align the mark on both mounts
with the mark on the fuselage
Binder clip
Nylon wing bolt
Rubber band
(both the top
and bottom)
IMPORTANT: 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.
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. Clean off the excess epoxy with paper towel and kerosene.
9- Joining the wing halves
P-39 AIRACOBRA
10- Engine mount
P-39 AIRACOBRA
- Remove the engine mounts and drill a 13/64”(5mm) hole
through the fire-wall at each of the four marks marked.
- Attach the four blind-nut to the fire-wall as show
- Reposition the engine mounts on to the fire-wall
and secure them with four 4x25mm screw
- Position the engine on to the engine mounts so the distance
from the prop hub to the fire wall is 118mm.
- Mark the engine mounting plate where the four holes are to be drilled.
- Reposition the engine on the engine mount beams, aligning it
with the holes. Secure the engine to the engine mount using four
3x25mm screws.
5mm
13/64”
-Remove the engine and drill a 1/8” (3mm) holes through
the beam at each of the four marks make before.
1/8”
3mm
...4
.................4
4x25mm screw
Blind-nut
3x20mm screw
1/8”(3mm) nut
.................4
...4
1/8x5-1/64”
5/32x1”
Firewall
118mm
B’
B
B=B’
-Using a aluminum motor mounting plate as a template,
mark the plywood motor mounting plate where the four
holes are to be drilled.
-Remove the aluminum motor mounting plate and drill a
1/8”(3mm) hole through the plywood at each of the four
marks marked .
3mm
Note: The aluminum motor mounting included with electric
motor set.
5x80mm.......4
5mm nut....................12
5mm washer...............16
3mm screw/nut...4
SIDE-VIEW
11- Engine mount
P-39 AIRACOBRA
12- Electric motor mount
P-39 AIRACOBRA

CA Thin CA
The rectangular hole on the bottom
of the flap is pre-cut at factory
1-Depending on the position of the linkage, determine the location of aileron control horn.
The horn holes must be perfectly aligned with the axis of articulation.
2-Mark the position of the “foot” of the horn on the aileron. Then, with the drill, make the 2
holes.
3-Install the aileron control horn as shown.
Control horn Alignment
Do the same way with second
wing half.
WING - BOTTOM VIEW
3-Install the aileron and flap servo on the servo mount.
Adhesive
tape
Do the same way with second wing half
WING - BOTTOM VIEW
2- Servo
..........2
2x30mm....4
..........4
....................2
X
P-39 AIRACOBRA
WING - BOTTOM VIEW
X
X
Thread the flap and aileron extension cords into the wing with the existing thread.
1- Servo extension cord
P-39 AIRACOBRA
-Switch on the radio (trims centered)
then mount the ailerons servo horn
in neutral position.
-The servo horn should be
perpendicular to the servo
YES NO
2- Connect the aileron and flap servo cord to the
aileron and flap extension cord.
3- Control horn
P-39 AIRACOBRA
Do the same way with second
wing half.
SILICON
Threadlocker
4- Flap & Aileron linkages
P-39 AIRACOBRA
5A
Slide the landing gear onto the
plywood gear mount and push
the landing gear as shown.
5B
Using the nylon gear strap
as a template, mark the
plywood gear mount where
the four holes to be drill.
Remove the nylon gear
strap and drill a 2mm hole
at each of the four marks
marked.
5C 5D
5E
Attach the ply gear mount
plate to the plywood gear
mount.
5F 5G
Drill a 2mm holes through the
square plastic and ply gear
mount plate.
Secure the ply gear mount
using four 3x20mm screws.
Reposition the nylon gear
strap and secure them in
place using four 3x20mm
screws.
5H
2mm
5- Fixed gear assembling
P-39 AIRACOBRA
TOP VIEW
BOTTOM VIEW
2x6mm screw
..........4
....2
...2
4mm collar
2mm
CA
6- Fixed gear installation
P-39 AIRACOBRA
2x6
50mm
7- Fixed gear installation
P-39 AIRACOBRA
CA
Thin CA
Perpendicular
Center line
Using a pencil, mark the center of the brace.
Trial fit the wing joiner into one of the wing panels.
It should insert smoothly up to the center line marked
above.
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.
AB
Coat one half of the dihedral brace with 30 minute epoxy up to
the center line. Install the epoxy-coated side of the dihedral brace.
Apply a generous amount of epoxy into the wing joiner cavity of
one wing half.
Smear epoxy on the wing root as show.
AB
6x20mm
dowel
8- Joining the wing halves
P-39 AIRACOBRA
Step 8A
Step 8B
Step 8C
Step 8D
Step 8E
Step 8F
A
- Position the top and bottom engine mounts to the fire-wall,
using a pencil or felt tipped pen, mark the fire-wall where
the four holes are to be drilled.
A
B
B’
FRONT-VIEW
! Engine thrust on balk head
is already adjust at factory
! Align the mark on both mounts
with the mark on the fuselage
Binder clip
Nylon wing bolt
Rubber band
(both the top
and bottom)
IMPORTANT: 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.
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. Clean off the excess epoxy with paper towel and kerosene.
9- Joining the wing halves
P-39 AIRACOBRA
10- Engine mount
P-39 AIRACOBRA
- Remove the engine mounts and drill a 13/64”(5mm) hole
through the fire-wall at each of the four marks marked.
- Attach the four blind-nut to the fire-wall as show
- Reposition the engine mounts on to the fire-wall
and secure them with four 4x25mm screw
- Position the engine on to the engine mounts so the distance
from the prop hub to the fire wall is 118mm.
- Mark the engine mounting plate where the four holes are to be drilled.
- Reposition the engine on the engine mount beams, aligning it
with the holes. Secure the engine to the engine mount using four
3x25mm screws.
5mm
13/64”
-Remove the engine and drill a 1/8” (3mm) holes through
the beam at each of the four marks make before.
1/8”
3mm
...4
.................4
4x25mm screw
Blind-nut
3x20mm screw
1/8”(3mm) nut
.................4
...4
1/8x5-1/64”
5/32x1”
Firewall
118mm
B’
B
B=B’
-Using a aluminum motor mounting plate as a template,
mark the plywood motor mounting plate where the four
holes are to be drilled.
-Remove the aluminum motor mounting plate and drill a
1/8”(3mm) hole through the plywood at each of the four
marks marked .
3mm
Note: The aluminum motor mounting included with electric
motor set.
5x80mm.......4
5mm nut....................12
5mm washer...............16
3mm screw/nut...4
SIDE-VIEW
11- Engine mount
P-39 AIRACOBRA
12- Electric motor mount
P-39 AIRACOBRA

Do the same way with second
wing half.
SILICON
Threadlocker
4- Flap & Aileron linkages
P-39 AIRACOBRA
5A
Slide the landing gear onto the
plywood gear mount and push
the landing gear as shown.
5B
Using the nylon gear strap
as a template, mark the
plywood gear mount where
the four holes to be drill.
Remove the nylon gear
strap and drill a 2mm hole
at each of the four marks
marked.
5C 5D
5E
Attach the ply gear mount
plate to the plywood gear
mount.
5F 5G
Drill a 2mm holes through the
square plastic and ply gear
mount plate.
Secure the ply gear mount
using four 3x20mm screws.
Reposition the nylon gear
strap and secure them in
place using four 3x20mm
screws.
5H
2mm
5- Fixed gear assembling
P-39 AIRACOBRA
TOP VIEW
BOTTOM VIEW
2x6mm screw
..........4
....2
...2
4mm collar
2mm
CA
6- Fixed gear installation
P-39 AIRACOBRA
2x6
50mm
7- Fixed gear installation
P-39 AIRACOBRA
CA
Thin CA
Perpendicular
Center line
Using a pencil, mark the center of the brace.
Trial fit the wing joiner into one of the wing panels.
It should insert smoothly up to the center line marked
above.
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.
AB
Coat one half of the dihedral brace with 30 minute epoxy up to
the center line. Install the epoxy-coated side of the dihedral brace.
Apply a generous amount of epoxy into the wing joiner cavity of
one wing half.
Smear epoxy on the wing root as show.
AB
6x20mm
dowel
8- Joining the wing halves
P-39 AIRACOBRA
Step 8A
Step 8B
Step 8C
Step 8D
Step 8E
Step 8F
A
- Position the top and bottom engine mounts to the fire-wall,
using a pencil or felt tipped pen, mark the fire-wall where
the four holes are to be drilled.
A
B
B’
FRONT-VIEW
! Engine thrust on balk head
is already adjust at factory
! Align the mark on both mounts
with the mark on the fuselage
Binder clip
Nylon wing bolt
Rubber band
(both the top
and bottom)
IMPORTANT: 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.
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. Clean off the excess epoxy with paper towel and kerosene.
9- Joining the wing halves
P-39 AIRACOBRA
10- Engine mount
P-39 AIRACOBRA
- Remove the engine mounts and drill a 13/64”(5mm) hole
through the fire-wall at each of the four marks marked.
- Attach the four blind-nut to the fire-wall as show
- Reposition the engine mounts on to the fire-wall
and secure them with four 4x25mm screw
- Position the engine on to the engine mounts so the distance
from the prop hub to the fire wall is 118mm.
- Mark the engine mounting plate where the four holes are to be drilled.
- Reposition the engine on the engine mount beams, aligning it
with the holes. Secure the engine to the engine mount using four
3x25mm screws.
5mm
13/64”
-Remove the engine and drill a 1/8” (3mm) holes through
the beam at each of the four marks make before.
1/8”
3mm
...4
.................4
4x25mm screw
Blind-nut
3x20mm screw
1/8”(3mm) nut
.................4
...4
1/8x5-1/64”
5/32x1”
Firewall
118mm
B’
B
B=B’
-Using a aluminum motor mounting plate as a template,
mark the plywood motor mounting plate where the four
holes are to be drilled.
-Remove the aluminum motor mounting plate and drill a
1/8”(3mm) hole through the plywood at each of the four
marks marked .
3mm
Note: The aluminum motor mounting included with electric
motor set.
5x80mm.......4
5mm nut....................12
5mm washer...............16
3mm screw/nut...4
SIDE-VIEW
11- Engine mount
P-39 AIRACOBRA
12- Electric motor mount
P-39 AIRACOBRA

2x6mm screw
..........4
....2
...2
4mm collar
2mm
CA
6- Fixed gear installation
P-39 AIRACOBRA
2x6
50mm
7- Fixed gear installation
P-39 AIRACOBRA
CA
Thin CA
Perpendicular
Center line
Using a pencil, mark the center of the brace.
Trial fit the wing joiner into one of the wing panels.
It should insert smoothly up to the center line marked
above.
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.
AB
Coat one half of the dihedral brace with 30 minute epoxy up to
the center line. Install the epoxy-coated side of the dihedral brace.
Apply a generous amount of epoxy into the wing joiner cavity of
one wing half.
Smear epoxy on the wing root as show.
AB
6x20mm
dowel
8- Joining the wing halves
P-39 AIRACOBRA
Step 8A
Step 8B
Step 8C
Step 8D
Step 8E
Step 8F
A
- Position the top and bottom engine mounts to the fire-wall,
using a pencil or felt tipped pen, mark the fire-wall where
the four holes are to be drilled.
A
B
B’
FRONT-VIEW
! Engine thrust on balk head
is already adjust at factory
! Align the mark on both mounts
with the mark on the fuselage
Binder clip
Nylon wing bolt
Rubber band
(both the top
and bottom)
IMPORTANT: 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.
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. Clean off the excess epoxy with paper towel and kerosene.
9- Joining the wing halves
P-39 AIRACOBRA
10- Engine mount
P-39 AIRACOBRA
- Remove the engine mounts and drill a 13/64”(5mm) hole
through the fire-wall at each of the four marks marked.
- Attach the four blind-nut to the fire-wall as show
- Reposition the engine mounts on to the fire-wall
and secure them with four 4x25mm screw
- Position the engine on to the engine mounts so the distance
from the prop hub to the fire wall is 118mm.
- Mark the engine mounting plate where the four holes are to be drilled.
- Reposition the engine on the engine mount beams, aligning it
with the holes. Secure the engine to the engine mount using four
3x25mm screws.
5mm
13/64”
-Remove the engine and drill a 1/8” (3mm) holes through
the beam at each of the four marks make before.
1/8”
3mm
...4
.................4
4x25mm screw
Blind-nut
3x20mm screw
1/8”(3mm) nut
.................4
...4
1/8x5-1/64”
5/32x1”
Firewall
118mm
B’
B
B=B’
-Using a aluminum motor mounting plate as a template,
mark the plywood motor mounting plate where the four
holes are to be drilled.
-Remove the aluminum motor mounting plate and drill a
1/8”(3mm) hole through the plywood at each of the four
marks marked .
3mm
Note: The aluminum motor mounting included with electric
motor set.
5x80mm.......4
5mm nut....................12
5mm washer...............16
3mm screw/nut...4
SIDE-VIEW
11- Engine mount
P-39 AIRACOBRA
12- Electric motor mount
P-39 AIRACOBRA

2x6
50mm
7- Fixed gear installation
P-39 AIRACOBRA
CA
Thin CA
Perpendicular
Center line
Using a pencil, mark the center of the brace.
Trial fit the wing joiner into one of the wing panels.
It should insert smoothly up to the center line marked
above.
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.
AB
Coat one half of the dihedral brace with 30 minute epoxy up to
the center line. Install the epoxy-coated side of the dihedral brace.
Apply a generous amount of epoxy into the wing joiner cavity of
one wing half.
Smear epoxy on the wing root as show.
AB
6x20mm
dowel
8- Joining the wing halves
P-39 AIRACOBRA
Step 8A
Step 8B
Step 8C
Step 8D
Step 8E
Step 8F
A
- Position the top and bottom engine mounts to the fire-wall,
using a pencil or felt tipped pen, mark the fire-wall where
the four holes are to be drilled.
A
B
B’
FRONT-VIEW
! Engine thrust on balk head
is already adjust at factory
! Align the mark on both mounts
with the mark on the fuselage
Binder clip
Nylon wing bolt
Rubber band
(both the top
and bottom)
IMPORTANT: 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.
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. Clean off the excess epoxy with paper towel and kerosene.
9- Joining the wing halves
P-39 AIRACOBRA
10- Engine mount
P-39 AIRACOBRA
- Remove the engine mounts and drill a 13/64”(5mm) hole
through the fire-wall at each of the four marks marked.
- Attach the four blind-nut to the fire-wall as show
- Reposition the engine mounts on to the fire-wall
and secure them with four 4x25mm screw
- Position the engine on to the engine mounts so the distance
from the prop hub to the fire wall is 118mm.
- Mark the engine mounting plate where the four holes are to be drilled.
- Reposition the engine on the engine mount beams, aligning it
with the holes. Secure the engine to the engine mount using four
3x25mm screws.
5mm
13/64”
-Remove the engine and drill a 1/8” (3mm) holes through
the beam at each of the four marks make before.
1/8”
3mm
...4
.................4
4x25mm screw
Blind-nut
3x20mm screw
1/8”(3mm) nut
.................4
...4
1/8x5-1/64”
5/32x1”
Firewall
118mm
B’
B
B=B’
-Using a aluminum motor mounting plate as a template,
mark the plywood motor mounting plate where the four
holes are to be drilled.
-Remove the aluminum motor mounting plate and drill a
1/8”(3mm) hole through the plywood at each of the four
marks marked .
3mm
Note: The aluminum motor mounting included with electric
motor set.
5x80mm.......4
5mm nut....................12
5mm washer...............16
3mm screw/nut...4
SIDE-VIEW
11- Engine mount
P-39 AIRACOBRA
12- Electric motor mount
P-39 AIRACOBRA

CA
Thin CA
Perpendicular
Center line
Using a pencil, mark the center of the brace.
Trial fit the wing joiner into one of the wing panels.
It should insert smoothly up to the center line marked
above.
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.
AB
Coat one half of the dihedral brace with 30 minute epoxy up to
the center line. Install the epoxy-coated side of the dihedral brace.
Apply a generous amount of epoxy into the wing joiner cavity of
one wing half.
Smear epoxy on the wing root as show.
AB
6x20mm
dowel
8- Joining the wing halves
P-39 AIRACOBRA
Step 8A
Step 8B
Step 8C
Step 8D
Step 8E
Step 8F
A
- Position the top and bottom engine mounts to the fire-wall,
using a pencil or felt tipped pen, mark the fire-wall where
the four holes are to be drilled.
A
B
B’
FRONT-VIEW
! Engine thrust on balk head
is already adjust at factory
! Align the mark on both mounts
with the mark on the fuselage
Binder clip
Nylon wing bolt
Rubber band
(both the top
and bottom)
IMPORTANT: 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.
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. Clean off the excess epoxy with paper towel and kerosene.
9- Joining the wing halves
P-39 AIRACOBRA
10- Engine mount
P-39 AIRACOBRA
- Remove the engine mounts and drill a 13/64”(5mm) hole
through the fire-wall at each of the four marks marked.
- Attach the four blind-nut to the fire-wall as show
- Reposition the engine mounts on to the fire-wall
and secure them with four 4x25mm screw
- Position the engine on to the engine mounts so the distance
from the prop hub to the fire wall is 118mm.
- Mark the engine mounting plate where the four holes are to be drilled.
- Reposition the engine on the engine mount beams, aligning it
with the holes. Secure the engine to the engine mount using four
3x25mm screws.
5mm
13/64”
-Remove the engine and drill a 1/8” (3mm) holes through
the beam at each of the four marks make before.
1/8”
3mm
...4
.................4
4x25mm screw
Blind-nut
3x20mm screw
1/8”(3mm) nut
.................4
...4
1/8x5-1/64”
5/32x1”
Firewall
118mm
B’
B
B=B’
-Using a aluminum motor mounting plate as a template,
mark the plywood motor mounting plate where the four
holes are to be drilled.
-Remove the aluminum motor mounting plate and drill a
1/8”(3mm) hole through the plywood at each of the four
marks marked .
3mm
Note: The aluminum motor mounting included with electric
motor set.
5x80mm.......4
5mm nut....................12
5mm washer...............16
3mm screw/nut...4
SIDE-VIEW
11- Engine mount
P-39 AIRACOBRA
12- Electric motor mount
P-39 AIRACOBRA

A
- Position the top and bottom engine mounts to the fire-wall,
using a pencil or felt tipped pen, mark the fire-wall where
the four holes are to be drilled.
A
B
B’
FRONT-VIEW
! Engine thrust on balk head
is already adjust at factory
! Align the mark on both mounts
with the mark on the fuselage
Binder clip
Nylon wing bolt
Rubber band
(both the top
and bottom)
IMPORTANT: 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.
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. Clean off the excess epoxy with paper towel and kerosene.
9- Joining the wing halves
P-39 AIRACOBRA
10- Engine mount
P-39 AIRACOBRA
- Remove the engine mounts and drill a 13/64”(5mm) hole
through the fire-wall at each of the four marks marked.
- Attach the four blind-nut to the fire-wall as show
- Reposition the engine mounts on to the fire-wall
and secure them with four 4x25mm screw
- Position the engine on to the engine mounts so the distance
from the prop hub to the fire wall is 118mm.
- Mark the engine mounting plate where the four holes are to be drilled.
- Reposition the engine on the engine mount beams, aligning it
with the holes. Secure the engine to the engine mount using four
3x25mm screws.
5mm
13/64”
-Remove the engine and drill a 1/8” (3mm) holes through
the beam at each of the four marks make before.
1/8”
3mm
...4
.................4
4x25mm screw
Blind-nut
3x20mm screw
1/8”(3mm) nut
.................4
...4
1/8x5-1/64”
5/32x1”
Firewall
118mm
B’
B
B=B’
-Using a aluminum motor mounting plate as a template,
mark the plywood motor mounting plate where the four
holes are to be drilled.
-Remove the aluminum motor mounting plate and drill a
1/8”(3mm) hole through the plywood at each of the four
marks marked .
3mm
Note: The aluminum motor mounting included with electric
motor set.
5x80mm.......4
5mm nut....................12
5mm washer...............16
3mm screw/nut...4
SIDE-VIEW
11- Engine mount
P-39 AIRACOBRA
12- Electric motor mount
P-39 AIRACOBRA

- Remove the engine mounts and drill a 13/64”(5mm) hole
through the fire-wall at each of the four marks marked.
- Attach the four blind-nut to the fire-wall as show
- Reposition the engine mounts on to the fire-wall
and secure them with four 4x25mm screw
- Position the engine on to the engine mounts so the distance
from the prop hub to the fire wall is 118mm.
- Mark the engine mounting plate where the four holes are to be drilled.
- Reposition the engine on the engine mount beams, aligning it
with the holes. Secure the engine to the engine mount using four
3x25mm screws.
5mm
13/64”
-Remove the engine and drill a 1/8” (3mm) holes through
the beam at each of the four marks make before.
1/8”
3mm
...4
.................4
4x25mm screw
Blind-nut
3x20mm screw
1/8”(3mm) nut
.................4
...4
1/8x5-1/64”
5/32x1”
Firewall
118mm
B’
B
B=B’
-Using a aluminum motor mounting plate as a template,
mark the plywood motor mounting plate where the four
holes are to be drilled.
-Remove the aluminum motor mounting plate and drill a
1/8”(3mm) hole through the plywood at each of the four
marks marked .
3mm
Note: The aluminum motor mounting included with electric
motor set.
5x80mm.......4
5mm nut....................12
5mm washer...............16
3mm screw/nut...4
SIDE-VIEW
11- Engine mount
P-39 AIRACOBRA
12- Electric motor mount
P-39 AIRACOBRA

Attach the plastic nose gear mount
to the plywood nose gear plate using
four 3x20mm screws and blind nuts.
CA
CA
Secure the plywood nose gear plate
in place using CA glue.
Plywood nose gear plate
Plastic nose gear
mount
Insert the nose gear pushrod into the
fuselage with the “Z” bend in front.
Insert the “Z” bend into the hole on the
nose gear control horn.
Struts (purchase separately)
Electric retract (purchase separately)
13- Nose gear
P-39 AIRACOBRA
14- Struts
P-39 AIRACOBRA (Not include)
A = A’
B = B’
C = C’
BB’
Cut away
only the
covering
both sides
Reposition the stabilizers into the fuselage, ensuring that they are
accurately aligned.
Secure the horizontal stabilizer in place using thin CA glue.
CA
CA
Glue inside the slot, where
the horizontal stabilizer
meet the fuselage.
Glue the top and bottom of
the horizontal stabilizer,
where it meets the fuselage
Note: use the thin CA glue only
15- Horizontal stabilizer
P-39 AIRACOBRA
AA’
CC’
Securely glue together. If coming off during
fly, you lose control of your air plane.
!
Insert the horizontal stabilizer
into the slot on the fuselage,
if necessary, use sander to widen
the slot to make this easier.
Remove the horizontal stabilizer from the fuselage.
Using the sharp hobby knife, carefully cut away the
covering inside the lines which were marked above.
Be cautious not to cut into the wood, this will
weaken the structure.
Check the alignment of the horizontal stabilizer
by measuring from the fixed point along the center line
of the fuselage to the trailing edge of the horizontal stabilizer
The distance must be equal on both sides.
Using a sharp hobby knife, carefully cut away the covering
around of all slots for the horizontal stabilizer and vertical
fin installation.
Cut away only
the covering
When you are satisfied with the alignment, use a pencil to carefully
trace around the top and bottom of the horizontal stabilizer where it
meets the fuselage.
CA
Glue the left and right of the
vertical stabilizer, where it
meets the fuselage
CA
Glue the bottom of the vertical
stabilizer, where it sit on the fuselage.
Reposition the stabilizers onto the fuselage, ensuring that they are accurately aligned.
Secure the horizontal stabilizer in place using thin CA glue.
Note: use the thin CA glue only
Insert the Vertical stabilizer into
the slot of the fuselage as shown.
B=B’ BB’
16- Vertical stabilizer
P-39 AIRACOBRA
Step 17A
Step 17D
Securely glue together. If coming off during
fly, you lose control of your air plane.
!
When you are satisfied with the alignment, use a pencil to
carefully trace around the left and right of the Vertical stabilizer
where it meets the fuselage.
Remove the vertical stabilizer from the fuselage.
Cut away the covering inside the lines.
Not to cut into the wood.
Step 17B
Step 17C
Step 17D
Step 17E
Right elevator servo (mini servo)
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 CA glue.
Do the same way with the rudder.
Hinge
STABILIZER
Thin CA glue
Thin CA glue
Securely glue together. If coming off during
fly, you lose control of your air plane.
!
Left elevator servo
Rudder servo (mini servo)
YES NO
- Switch on the radio (trims centered),
then mount the elevators and rudder
servo arms in neutral position.
- The servo arm should be
perpendicular to the servo.
17- Elevator and rudder
P-39 AIRACOBRA
SILICON
Threadlocker
175mm push-rod with clevis one end
.............3
2mm dia. connector
..............................3
Plastic control horn
...................3
2x12mm screw
...............6
1-Depending on the position of the linkage, determine the location of elevator and rudder control horn.
2-Mark the position of the “foot” of the horn on the elevator and rudder. Then, with the drill, make the 2
holes.
3-Attach the elevator and rudder control horn as shown.
2mm
2mm
SILICON
Threadlocker
18- Control horn
P-39 AIRACOBRA
19- Elevator & Rudder linkages
P-39 AIRACOBRA
Relieve the cowl to
clear the engine head
2.5x10mm.....4
2mm
1.5mm
FUEL TANK OR LI-PO BATTERY AREA
Throttle servo hole
Throttle servo hole
FUSELAGE - TOP VIEW
30x4mm nylon bolt
............2
Cut away only
the covering
20- Cowling
P-39 AIRACOBRA
Nose gear servo hole
21- Battery & Fuel tank area
P-39 AIRACOBRA
22- Canopy hatch
P-39 AIRACOBRA
Aerogun Aerogun
CA
CA
4mm
Wing section
Aerogun
Wing section
Aerogun
RIGHT
WRONG
X
BOTTOM VIEW
10mm
35 mm
RUDDER
6mm
AILERON
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 P-39 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”.
ELEVATOR
Take off 10mm
Landing 22mm
FLAP
35 mm
10mm
6mm
23- Aero gun
P-39 AIRACOBRA
24- Control surface
P-39 AIRACOBRA
IMPORTANT: Please do not clean your model with pure alcohol, only use liquid soap with water or use glass cleaner
to clean on surface of your model to keep the colour not fade.
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.
219995
Betty
Lou
“3rd”
FRESNO
CALIF
Snoohs
2
ND
VQA091
VQA09
VQ MODELS. P-39 Q/N .46 SIZE
VQ MODEL / P-39Q/N VERSION 1
VQA09 DECAL SHEET
VQA091 DECAL SHEET
VQA091
DECAL SHEET
25- Decal
P-39 AIRACOBRA
WARNING ! Securely install the receiver and power pack, ensuring they will not come loose or rattle during flight.
In order to obtain the CG specified, reposition the receiver and power pack
1- Mount the wing to the fuselage. Using a couple of pieces of masking tape, place them on the top side of the wing (126mm) back
from the leading edge, at the fuselage sides.
2- Lift the airplane. Place your fingers on the masking tape and carefully lift the plane.
3- If the nose of the plane falls, the plane is heavy nose. To correct this, move the battery pack further back in the fuselage. If the
tail of plane falls, the plane is tail heavy. To correct this, move the battery forward or if this is not possible, stick weight onto the
firewall.
When balanced correctly, the airplane should level or slightly nose down when you lift it up with your fingers.
DO NOT try to fly an out-of-balance model !
LATERAL BALANCE:
After you have balanced a plane on the CG, you should laterally balance it. Doing this will help the airplane track straighter.
1- Turn the airplane upside down. Attach one loop of heavy string to the engine crankshaft and one to the tail wheel wire.
With the wing level, carefully lift the airplane by the string. This may require two people to make easier.
2- 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.
THE CENTER OF GRAVITY IS LOCATED 82mm BACK FROM THE
LEADING EDGE OF THE WING, AT THE FUSELAGE. BALANCE A PLANE
UPSIDE DOWN WITH THE FUEL TANK EMPTY.
82mm
26- Decal
P-39 AIRACOBRA

A = A’
B = B’
C = C’
BB’
Cut away
only the
covering
both sides
Reposition the stabilizers into the fuselage, ensuring that they are
accurately aligned.
Secure the horizontal stabilizer in place using thin CA glue.
CA
CA
Glue inside the slot, where
the horizontal stabilizer
meet the fuselage.
Glue the top and bottom of
the horizontal stabilizer,
where it meets the fuselage
Note: use the thin CA glue only
15- Horizontal stabilizer
P-39 AIRACOBRA
AA’
CC’
Securely glue together. If coming off during
fly, you lose control of your air plane.
!
Insert the horizontal stabilizer
into the slot on the fuselage,
if necessary, use sander to widen
the slot to make this easier.
Remove the horizontal stabilizer from the fuselage.
Using the sharp hobby knife, carefully cut away the
covering inside the lines which were marked above.
Be cautious not to cut into the wood, this will
weaken the structure.
Check the alignment of the horizontal stabilizer
by measuring from the fixed point along the center line
of the fuselage to the trailing edge of the horizontal stabilizer
The distance must be equal on both sides.
Using a sharp hobby knife, carefully cut away the covering
around of all slots for the horizontal stabilizer and vertical
fin installation.
Cut away only
the covering
When you are satisfied with the alignment, use a pencil to carefully
trace around the top and bottom of the horizontal stabilizer where it
meets the fuselage.
CA
Glue the left and right of the
vertical stabilizer, where it
meets the fuselage
CA
Glue the bottom of the vertical
stabilizer, where it sit on the fuselage.
Reposition the stabilizers onto the fuselage, ensuring that they are accurately aligned.
Secure the horizontal stabilizer in place using thin CA glue.
Note: use the thin CA glue only
Insert the Vertical stabilizer into
the slot of the fuselage as shown.
B=B’ BB’
16- Vertical stabilizer
P-39 AIRACOBRA
Step 17A
Step 17D
Securely glue together. If coming off during
fly, you lose control of your air plane.
!
When you are satisfied with the alignment, use a pencil to
carefully trace around the left and right of the Vertical stabilizer
where it meets the fuselage.
Remove the vertical stabilizer from the fuselage.
Cut away the covering inside the lines.
Not to cut into the wood.
Step 17B
Step 17C
Step 17D
Step 17E
Right elevator servo (mini servo)
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 CA glue.
Do the same way with the rudder.
Hinge
STABILIZER
Thin CA glue
Thin CA glue
Securely glue together. If coming off during
fly, you lose control of your air plane.
!
Left elevator servo
Rudder servo (mini servo)
YES NO
- Switch on the radio (trims centered),
then mount the elevators and rudder
servo arms in neutral position.
- The servo arm should be
perpendicular to the servo.
17- Elevator and rudder
P-39 AIRACOBRA
SILICON
Threadlocker
175mm push-rod with clevis one end
.............3
2mm dia. connector
..............................3
Plastic control horn
...................3
2x12mm screw
...............6
1-Depending on the position of the linkage, determine the location of elevator and rudder control horn.
2-Mark the position of the “foot” of the horn on the elevator and rudder. Then, with the drill, make the 2
holes.
3-Attach the elevator and rudder control horn as shown.
2mm
2mm
SILICON
Threadlocker
18- Control horn
P-39 AIRACOBRA
19- Elevator & Rudder linkages
P-39 AIRACOBRA
Relieve the cowl to
clear the engine head
2.5x10mm.....4
2mm
1.5mm
FUEL TANK OR LI-PO BATTERY AREA
Throttle servo hole
Throttle servo hole
FUSELAGE - TOP VIEW
30x4mm nylon bolt
............2
Cut away only
the covering
20- Cowling
P-39 AIRACOBRA
Nose gear servo hole
21- Battery & Fuel tank area
P-39 AIRACOBRA
22- Canopy hatch
P-39 AIRACOBRA
Aerogun Aerogun
CA
CA
4mm
Wing section
Aerogun
Wing section
Aerogun
RIGHT
WRONG
X
BOTTOM VIEW
10mm
35 mm
RUDDER
6mm
AILERON
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 P-39 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”.
ELEVATOR
Take off 10mm
Landing 22mm
FLAP
35 mm
10mm
6mm
23- Aero gun
P-39 AIRACOBRA
24- Control surface
P-39 AIRACOBRA
IMPORTANT: Please do not clean your model with pure alcohol, only use liquid soap with water or use glass cleaner
to clean on surface of your model to keep the colour not fade.
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.
219995
Betty
Lou
“3rd”
FRESNO
CALIF
Snoohs
2
ND
VQA091
VQA09
VQ MODELS. P-39 Q/N .46 SIZE
VQ MODEL / P-39Q/N VERSION 1
VQA09 DECAL SHEET
VQA091 DECAL SHEET
VQA091
DECAL SHEET
25- Decal
P-39 AIRACOBRA
WARNING ! Securely install the receiver and power pack, ensuring they will not come loose or rattle during flight.
In order to obtain the CG specified, reposition the receiver and power pack
1- Mount the wing to the fuselage. Using a couple of pieces of masking tape, place them on the top side of the wing (126mm) back
from the leading edge, at the fuselage sides.
2- Lift the airplane. Place your fingers on the masking tape and carefully lift the plane.
3- If the nose of the plane falls, the plane is heavy nose. To correct this, move the battery pack further back in the fuselage. If the
tail of plane falls, the plane is tail heavy. To correct this, move the battery forward or if this is not possible, stick weight onto the
firewall.
When balanced correctly, the airplane should level or slightly nose down when you lift it up with your fingers.
DO NOT try to fly an out-of-balance model !
LATERAL BALANCE:
After you have balanced a plane on the CG, you should laterally balance it. Doing this will help the airplane track straighter.
1- Turn the airplane upside down. Attach one loop of heavy string to the engine crankshaft and one to the tail wheel wire.
With the wing level, carefully lift the airplane by the string. This may require two people to make easier.
2- 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.
THE CENTER OF GRAVITY IS LOCATED 82mm BACK FROM THE
LEADING EDGE OF THE WING, AT THE FUSELAGE. BALANCE A PLANE
UPSIDE DOWN WITH THE FUEL TANK EMPTY.
82mm
26- Decal
P-39 AIRACOBRA

CA
Glue the left and right of the
vertical stabilizer, where it
meets the fuselage
CA
Glue the bottom of the vertical
stabilizer, where it sit on the fuselage.
Reposition the stabilizers onto the fuselage, ensuring that they are accurately aligned.
Secure the horizontal stabilizer in place using thin CA glue.
Note: use the thin CA glue only
Insert the Vertical stabilizer into
the slot of the fuselage as shown.
B=B’ BB’
16- Vertical stabilizer
P-39 AIRACOBRA
Step 17A
Step 17D
Securely glue together. If coming off during
fly, you lose control of your air plane.
!
When you are satisfied with the alignment, use a pencil to
carefully trace around the left and right of the Vertical stabilizer
where it meets the fuselage.
Remove the vertical stabilizer from the fuselage.
Cut away the covering inside the lines.
Not to cut into the wood.
Step 17B
Step 17C
Step 17D
Step 17E
Right elevator servo (mini servo)
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 CA glue.
Do the same way with the rudder.
Hinge
STABILIZER
Thin CA glue
Thin CA glue
Securely glue together. If coming off during
fly, you lose control of your air plane.
!
Left elevator servo
Rudder servo (mini servo)
YES NO
- Switch on the radio (trims centered),
then mount the elevators and rudder
servo arms in neutral position.
- The servo arm should be
perpendicular to the servo.
17- Elevator and rudder
P-39 AIRACOBRA
SILICON
Threadlocker
175mm push-rod with clevis one end
.............3
2mm dia. connector
..............................3
Plastic control horn
...................3
2x12mm screw
...............6
1-Depending on the position of the linkage, determine the location of elevator and rudder control horn.
2-Mark the position of the “foot” of the horn on the elevator and rudder. Then, with the drill, make the 2
holes.
3-Attach the elevator and rudder control horn as shown.
2mm
2mm
SILICON
Threadlocker
18- Control horn
P-39 AIRACOBRA
19- Elevator & Rudder linkages
P-39 AIRACOBRA
Relieve the cowl to
clear the engine head
2.5x10mm.....4
2mm
1.5mm
FUEL TANK OR LI-PO BATTERY AREA
Throttle servo hole
Throttle servo hole
FUSELAGE - TOP VIEW
30x4mm nylon bolt
............2
Cut away only
the covering
20- Cowling
P-39 AIRACOBRA
Nose gear servo hole
21- Battery & Fuel tank area
P-39 AIRACOBRA
22- Canopy hatch
P-39 AIRACOBRA
Aerogun Aerogun
CA
CA
4mm
Wing section
Aerogun
Wing section
Aerogun
RIGHT
WRONG
X
BOTTOM VIEW
10mm
35 mm
RUDDER
6mm
AILERON
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 P-39 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”.
ELEVATOR
Take off 10mm
Landing 22mm
FLAP
35 mm
10mm
6mm
23- Aero gun
P-39 AIRACOBRA
24- Control surface
P-39 AIRACOBRA
IMPORTANT: Please do not clean your model with pure alcohol, only use liquid soap with water or use glass cleaner
to clean on surface of your model to keep the colour not fade.
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.
219995
Betty
Lou
“3rd”
FRESNO
CALIF
Snoohs
2
ND
VQA091
VQA09
VQ MODELS. P-39 Q/N .46 SIZE
VQ MODEL / P-39Q/N VERSION 1
VQA09 DECAL SHEET
VQA091 DECAL SHEET
VQA091
DECAL SHEET
25- Decal
P-39 AIRACOBRA
WARNING ! Securely install the receiver and power pack, ensuring they will not come loose or rattle during flight.
In order to obtain the CG specified, reposition the receiver and power pack
1- Mount the wing to the fuselage. Using a couple of pieces of masking tape, place them on the top side of the wing (126mm) back
from the leading edge, at the fuselage sides.
2- Lift the airplane. Place your fingers on the masking tape and carefully lift the plane.
3- If the nose of the plane falls, the plane is heavy nose. To correct this, move the battery pack further back in the fuselage. If the
tail of plane falls, the plane is tail heavy. To correct this, move the battery forward or if this is not possible, stick weight onto the
firewall.
When balanced correctly, the airplane should level or slightly nose down when you lift it up with your fingers.
DO NOT try to fly an out-of-balance model !
LATERAL BALANCE:
After you have balanced a plane on the CG, you should laterally balance it. Doing this will help the airplane track straighter.
1- Turn the airplane upside down. Attach one loop of heavy string to the engine crankshaft and one to the tail wheel wire.
With the wing level, carefully lift the airplane by the string. This may require two people to make easier.
2- 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.
THE CENTER OF GRAVITY IS LOCATED 82mm BACK FROM THE
LEADING EDGE OF THE WING, AT THE FUSELAGE. BALANCE A PLANE
UPSIDE DOWN WITH THE FUEL TANK EMPTY.
82mm
26- Decal
P-39 AIRACOBRA

Right elevator servo (mini servo)
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 CA glue.
Do the same way with the rudder.
Hinge
STABILIZER
Thin CA glue
Thin CA glue
Securely glue together. If coming off during
fly, you lose control of your air plane.
!
Left elevator servo
Rudder servo (mini servo)
YES NO
- Switch on the radio (trims centered),
then mount the elevators and rudder
servo arms in neutral position.
- The servo arm should be
perpendicular to the servo.
17- Elevator and rudder
P-39 AIRACOBRA
SILICON
Threadlocker
175mm push-rod with clevis one end
.............3
2mm dia. connector
..............................3
Plastic control horn
...................3
2x12mm screw
...............6
1-Depending on the position of the linkage, determine the location of elevator and rudder control horn.
2-Mark the position of the “foot” of the horn on the elevator and rudder. Then, with the drill, make the 2
holes.
3-Attach the elevator and rudder control horn as shown.
2mm
2mm
SILICON
Threadlocker
18- Control horn
P-39 AIRACOBRA
19- Elevator & Rudder linkages
P-39 AIRACOBRA
Relieve the cowl to
clear the engine head
2.5x10mm.....4
2mm
1.5mm
FUEL TANK OR LI-PO BATTERY AREA
Throttle servo hole
Throttle servo hole
FUSELAGE - TOP VIEW
30x4mm nylon bolt
............2
Cut away only
the covering
20- Cowling
P-39 AIRACOBRA
Nose gear servo hole
21- Battery & Fuel tank area
P-39 AIRACOBRA
22- Canopy hatch
P-39 AIRACOBRA
Aerogun Aerogun
CA
CA
4mm
Wing section
Aerogun
Wing section
Aerogun
RIGHT
WRONG
X
BOTTOM VIEW
10mm
35 mm
RUDDER
6mm
AILERON
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 P-39 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”.
ELEVATOR
Take off 10mm
Landing 22mm
FLAP
35 mm
10mm
6mm
23- Aero gun
P-39 AIRACOBRA
24- Control surface
P-39 AIRACOBRA
IMPORTANT: Please do not clean your model with pure alcohol, only use liquid soap with water or use glass cleaner
to clean on surface of your model to keep the colour not fade.
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.
219995
Betty
Lou
“3rd”
FRESNO
CALIF
Snoohs
2
ND
VQA091
VQA09
VQ MODELS. P-39 Q/N .46 SIZE
VQ MODEL / P-39Q/N VERSION 1
VQA09 DECAL SHEET
VQA091 DECAL SHEET
VQA091
DECAL SHEET
25- Decal
P-39 AIRACOBRA
WARNING ! Securely install the receiver and power pack, ensuring they will not come loose or rattle during flight.
In order to obtain the CG specified, reposition the receiver and power pack
1- Mount the wing to the fuselage. Using a couple of pieces of masking tape, place them on the top side of the wing (126mm) back
from the leading edge, at the fuselage sides.
2- Lift the airplane. Place your fingers on the masking tape and carefully lift the plane.
3- If the nose of the plane falls, the plane is heavy nose. To correct this, move the battery pack further back in the fuselage. If the
tail of plane falls, the plane is tail heavy. To correct this, move the battery forward or if this is not possible, stick weight onto the
firewall.
When balanced correctly, the airplane should level or slightly nose down when you lift it up with your fingers.
DO NOT try to fly an out-of-balance model !
LATERAL BALANCE:
After you have balanced a plane on the CG, you should laterally balance it. Doing this will help the airplane track straighter.
1- Turn the airplane upside down. Attach one loop of heavy string to the engine crankshaft and one to the tail wheel wire.
With the wing level, carefully lift the airplane by the string. This may require two people to make easier.
2- 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.
THE CENTER OF GRAVITY IS LOCATED 82mm BACK FROM THE
LEADING EDGE OF THE WING, AT THE FUSELAGE. BALANCE A PLANE
UPSIDE DOWN WITH THE FUEL TANK EMPTY.
82mm
26- Decal
P-39 AIRACOBRA

Plastic control horn
...................3
2x12mm screw
...............6
1-Depending on the position of the linkage, determine the location of elevator and rudder control horn.
2-Mark the position of the “foot” of the horn on the elevator and rudder. Then, with the drill, make the 2
holes.
3-Attach the elevator and rudder control horn as shown.
2mm
2mm
SILICON
Threadlocker
18- Control horn
P-39 AIRACOBRA
19- Elevator & Rudder linkages
P-39 AIRACOBRA
Relieve the cowl to
clear the engine head
2.5x10mm.....4
2mm
1.5mm
FUEL TANK OR LI-PO BATTERY AREA
Throttle servo hole
Throttle servo hole
FUSELAGE - TOP VIEW
30x4mm nylon bolt
............2
Cut away only
the covering
20- Cowling
P-39 AIRACOBRA
Nose gear servo hole
21- Battery & Fuel tank area
P-39 AIRACOBRA
22- Canopy hatch
P-39 AIRACOBRA
Aerogun Aerogun
CA
CA
4mm
Wing section
Aerogun
Wing section
Aerogun
RIGHT
WRONG
X
BOTTOM VIEW
10mm
35 mm
RUDDER
6mm
AILERON
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 P-39 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”.
ELEVATOR
Take off 10mm
Landing 22mm
FLAP
35 mm
10mm
6mm
23- Aero gun
P-39 AIRACOBRA
24- Control surface
P-39 AIRACOBRA
IMPORTANT: Please do not clean your model with pure alcohol, only use liquid soap with water or use glass cleaner
to clean on surface of your model to keep the colour not fade.
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.
219995
Betty
Lou
“3rd”
FRESNO
CALIF
Snoohs
2
ND
VQA091
VQA09
VQ MODELS. P-39 Q/N .46 SIZE
VQ MODEL / P-39Q/N VERSION 1
VQA09 DECAL SHEET
VQA091 DECAL SHEET
VQA091
DECAL SHEET
25- Decal
P-39 AIRACOBRA
WARNING ! Securely install the receiver and power pack, ensuring they will not come loose or rattle during flight.
In order to obtain the CG specified, reposition the receiver and power pack
1- Mount the wing to the fuselage. Using a couple of pieces of masking tape, place them on the top side of the wing (126mm) back
from the leading edge, at the fuselage sides.
2- Lift the airplane. Place your fingers on the masking tape and carefully lift the plane.
3- If the nose of the plane falls, the plane is heavy nose. To correct this, move the battery pack further back in the fuselage. If the
tail of plane falls, the plane is tail heavy. To correct this, move the battery forward or if this is not possible, stick weight onto the
firewall.
When balanced correctly, the airplane should level or slightly nose down when you lift it up with your fingers.
DO NOT try to fly an out-of-balance model !
LATERAL BALANCE:
After you have balanced a plane on the CG, you should laterally balance it. Doing this will help the airplane track straighter.
1- Turn the airplane upside down. Attach one loop of heavy string to the engine crankshaft and one to the tail wheel wire.
With the wing level, carefully lift the airplane by the string. This may require two people to make easier.
2- 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.
THE CENTER OF GRAVITY IS LOCATED 82mm BACK FROM THE
LEADING EDGE OF THE WING, AT THE FUSELAGE. BALANCE A PLANE
UPSIDE DOWN WITH THE FUEL TANK EMPTY.
82mm
26- Decal
P-39 AIRACOBRA

Relieve the cowl to
clear the engine head
2.5x10mm.....4
2mm
1.5mm
FUEL TANK OR LI-PO BATTERY AREA
Throttle servo hole
Throttle servo hole
FUSELAGE - TOP VIEW
30x4mm nylon bolt
............2
Cut away only
the covering
20- Cowling
P-39 AIRACOBRA
Nose gear servo hole
21- Battery & Fuel tank area
P-39 AIRACOBRA
22- Canopy hatch
P-39 AIRACOBRA
Aerogun Aerogun
CA
CA
4mm
Wing section
Aerogun
Wing section
Aerogun
RIGHT
WRONG
X
BOTTOM VIEW
10mm
35 mm
RUDDER
6mm
AILERON
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 P-39 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”.
ELEVATOR
Take off 10mm
Landing 22mm
FLAP
35 mm
10mm
6mm
23- Aero gun
P-39 AIRACOBRA
24- Control surface
P-39 AIRACOBRA
IMPORTANT: Please do not clean your model with pure alcohol, only use liquid soap with water or use glass cleaner
to clean on surface of your model to keep the colour not fade.
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.
219995
Betty
Lou
“3rd”
FRESNO
CALIF
Snoohs
2
ND
VQA091
VQA09
VQ MODELS. P-39 Q/N .46 SIZE
VQ MODEL / P-39Q/N VERSION 1
VQA09 DECAL SHEET
VQA091 DECAL SHEET
VQA091
DECAL SHEET
25- Decal
P-39 AIRACOBRA
WARNING ! Securely install the receiver and power pack, ensuring they will not come loose or rattle during flight.
In order to obtain the CG specified, reposition the receiver and power pack
1- Mount the wing to the fuselage. Using a couple of pieces of masking tape, place them on the top side of the wing (126mm) back
from the leading edge, at the fuselage sides.
2- Lift the airplane. Place your fingers on the masking tape and carefully lift the plane.
3- If the nose of the plane falls, the plane is heavy nose. To correct this, move the battery pack further back in the fuselage. If the
tail of plane falls, the plane is tail heavy. To correct this, move the battery forward or if this is not possible, stick weight onto the
firewall.
When balanced correctly, the airplane should level or slightly nose down when you lift it up with your fingers.
DO NOT try to fly an out-of-balance model !
LATERAL BALANCE:
After you have balanced a plane on the CG, you should laterally balance it. Doing this will help the airplane track straighter.
1- Turn the airplane upside down. Attach one loop of heavy string to the engine crankshaft and one to the tail wheel wire.
With the wing level, carefully lift the airplane by the string. This may require two people to make easier.
2- 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.
THE CENTER OF GRAVITY IS LOCATED 82mm BACK FROM THE
LEADING EDGE OF THE WING, AT THE FUSELAGE. BALANCE A PLANE
UPSIDE DOWN WITH THE FUEL TANK EMPTY.
82mm
26- Decal
P-39 AIRACOBRA

Aerogun Aerogun
CA
CA
4mm
Wing section
Aerogun
Wing section
Aerogun
RIGHT
WRONG
X
BOTTOM VIEW
10mm
35 mm
RUDDER
6mm
AILERON
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 P-39 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”.
ELEVATOR
Take off 10mm
Landing 22mm
FLAP
35 mm
10mm
6mm
23- Aero gun
P-39 AIRACOBRA
24- Control surface
P-39 AIRACOBRA
IMPORTANT: Please do not clean your model with pure alcohol, only use liquid soap with water or use glass cleaner
to clean on surface of your model to keep the colour not fade.
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.
219995
Betty
Lou
“3rd”
FRESNO
CALIF
Snoohs
2
ND
VQA091
VQA09
VQ MODELS. P-39 Q/N .46 SIZE
VQ MODEL / P-39Q/N VERSION 1
VQA09 DECAL SHEET
VQA091 DECAL SHEET
VQA091
DECAL SHEET
25- Decal
P-39 AIRACOBRA
WARNING ! Securely install the receiver and power pack, ensuring they will not come loose or rattle during flight.
In order to obtain the CG specified, reposition the receiver and power pack
1- Mount the wing to the fuselage. Using a couple of pieces of masking tape, place them on the top side of the wing (126mm) back
from the leading edge, at the fuselage sides.
2- Lift the airplane. Place your fingers on the masking tape and carefully lift the plane.
3- If the nose of the plane falls, the plane is heavy nose. To correct this, move the battery pack further back in the fuselage. If the
tail of plane falls, the plane is tail heavy. To correct this, move the battery forward or if this is not possible, stick weight onto the
firewall.
When balanced correctly, the airplane should level or slightly nose down when you lift it up with your fingers.
DO NOT try to fly an out-of-balance model !
LATERAL BALANCE:
After you have balanced a plane on the CG, you should laterally balance it. Doing this will help the airplane track straighter.
1- Turn the airplane upside down. Attach one loop of heavy string to the engine crankshaft and one to the tail wheel wire.
With the wing level, carefully lift the airplane by the string. This may require two people to make easier.
2- 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.
THE CENTER OF GRAVITY IS LOCATED 82mm BACK FROM THE
LEADING EDGE OF THE WING, AT THE FUSELAGE. BALANCE A PLANE
UPSIDE DOWN WITH THE FUEL TANK EMPTY.
82mm
26- Decal
P-39 AIRACOBRA

IMPORTANT: Please do not clean your model with pure alcohol, only use liquid soap with water or use glass cleaner
to clean on surface of your model to keep the colour not fade.
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.
219995
Betty
Lou
“3rd”
FRESNO
CALIF
Snoohs
2
ND
VQA091
VQA09
VQ MODELS. P-39 Q/N .46 SIZE
VQ MODEL / P-39Q/N VERSION 1
VQA09 DECAL SHEET
VQA091 DECAL SHEET
VQA091
DECAL SHEET
25- Decal
P-39 AIRACOBRA
WARNING ! Securely install the receiver and power pack, ensuring they will not come loose or rattle during flight.
In order to obtain the CG specified, reposition the receiver and power pack
1- Mount the wing to the fuselage. Using a couple of pieces of masking tape, place them on the top side of the wing (126mm) back
from the leading edge, at the fuselage sides.
2- Lift the airplane. Place your fingers on the masking tape and carefully lift the plane.
3- If the nose of the plane falls, the plane is heavy nose. To correct this, move the battery pack further back in the fuselage. If the
tail of plane falls, the plane is tail heavy. To correct this, move the battery forward or if this is not possible, stick weight onto the
firewall.
When balanced correctly, the airplane should level or slightly nose down when you lift it up with your fingers.
DO NOT try to fly an out-of-balance model !
LATERAL BALANCE:
After you have balanced a plane on the CG, you should laterally balance it. Doing this will help the airplane track straighter.
1- Turn the airplane upside down. Attach one loop of heavy string to the engine crankshaft and one to the tail wheel wire.
With the wing level, carefully lift the airplane by the string. This may require two people to make easier.
2- 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.
THE CENTER OF GRAVITY IS LOCATED 82mm BACK FROM THE
LEADING EDGE OF THE WING, AT THE FUSELAGE. BALANCE A PLANE
UPSIDE DOWN WITH THE FUEL TANK EMPTY.
82mm
26- Decal
P-39 AIRACOBRA

WARNING ! Securely install the receiver and power pack, ensuring they will not come loose or rattle during flight.
In order to obtain the CG specified, reposition the receiver and power pack
1- Mount the wing to the fuselage. Using a couple of pieces of masking tape, place them on the top side of the wing (126mm) back
from the leading edge, at the fuselage sides.
2- Lift the airplane. Place your fingers on the masking tape and carefully lift the plane.
3- If the nose of the plane falls, the plane is heavy nose. To correct this, move the battery pack further back in the fuselage. If the
tail of plane falls, the plane is tail heavy. To correct this, move the battery forward or if this is not possible, stick weight onto the
firewall.
When balanced correctly, the airplane should level or slightly nose down when you lift it up with your fingers.
DO NOT try to fly an out-of-balance model !
LATERAL BALANCE:
After you have balanced a plane on the CG, you should laterally balance it. Doing this will help the airplane track straighter.
1- Turn the airplane upside down. Attach one loop of heavy string to the engine crankshaft and one to the tail wheel wire.
With the wing level, carefully lift the airplane by the string. This may require two people to make easier.
2- 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.
THE CENTER OF GRAVITY IS LOCATED 82mm BACK FROM THE
LEADING EDGE OF THE WING, AT THE FUSELAGE. BALANCE A PLANE
UPSIDE DOWN WITH THE FUEL TANK EMPTY.
82mm
26- Decal
P-39 AIRACOBRA