VQ Model Tomahawk PA-38 User manual

SPECIFICATIONS
Wingspan:.....................................1920mm
Length:......................................... 1320mm
Electric Motor:.............900Watt - 80A. ESC
Glow Engine:.........................91 4T / 60 2T
RTF Weight: 4.1 - 4.5Kg (Will vary with
Equipment Used).
Radio:.................................See next pager
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 Unterstätzung, 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.
Radio control model / Flugmodel
Instruction manual / Montageanleitung
All balsa and
plywood
Construction
Gas Engine: .......................................17cc
Tomahawk
PA-38

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
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
The pre-covered film on ARF kit may wrinkle due to variations
of temperature. Smooth out as explained right.
* Use an iron or heat gun. Start as low setting. Increase the
setting if necsessary. If it is too high, you may damage the
film Low setting
SILICON
EPOXY A
EPOXY B
CA
GLUE Epoxy Glue ( 5 minute type)
Silicon sealer
Cyanoacrylate
Glue
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
Symbols used throughout this instruction manual, comprise:
(Purchase separately)
Minimum 7 channel radio for airplane
with 8 servos (EP version) and
9 servos (GP version)
.90 - 4 cycle
12x6 for .60 - 4 cycle engine
13x7 for .90 - 4 cycle engine
14X8 for Electric Motor.
Silicone tube (GP version)
Servo extension cord:
.60 - 2 cycle
REQUIRED FOR OPERATION (Purchase separately)
Standard servo: Nose gear x1, Rudder X1
1000 Watt Brushless Motor
.
Mini servo: Aileron x2, Flap X2, Elevator x2
Throttle x1 (GP version) Depending on the motor used.
Aileron: 50mm x2 pcs
Flap: 30mm x2 pcs
Elevator: 40mm x4 pcs
Rudder: 20mm x1 pc
Rx battery: 20mm x1 pc

50cm Extension cord
Using the thread (pre-installed at
factory) to slide the aileron extension
cord into the wing half.
SILICON
Threadlocker
30cm Extension cord
X
X
........2
2mm connector
L/R
PA-38 Tomahawk 1- Extension cord & Servo

The rectangular holes were
cut out at the factory.
cut away
only the
covering
2x175mm flap rod with clevis
...2
2x175mm aileron rod with clevis
and EZ link
...2
Control horn
.............................2
Control horn
..................2 set
L/R
PA-38 Tomahawk 2- Control horn & Linkages
2mm

2x8mm screw
.........12
1mm
L/R
3x15mm hex bolt
...4

CA
Note: Make sure that the dowel must be perpendicular
with the wing root before glue.
CA
Thin CA
Thin CA
...2
4X40mm screw
4mm nut
............4
............6
4mm washer
75mm wheel
...2
4mm nut
4x45mm screw
Aluminum landing gear
4mm nut
L/R
PA-38 Tomahawk 4- Main wheel & Dowel

3x20mm hex bolt
...4
Throttle push-rod
push-rod guide
Nose gear control arm
2.5mm
PA-38 Tomahawk 5- Nose gear installation
1- Drill the 2.5mm hole on the firewall where the
nylon pushrod guide will go through .
2- Insert the nylon pushrod guide and nose gear push
rod through the firewall as shown.
3- Insert the “Z” bend of the nose gear push rod into
the hole of the nose gear arm as shown.
4- Insert the nose gear arm onto the nose gear mount.
5- Insert the nose gear though the nose gear mount.
1
3
4
2
5

Attach the engine mount beams onto the fire-wall so the distance
between of two engine mount beams is “A”,and B=B’ as show.
Secure the engine mount beams onto the fire-wall with litter CA glue
Carefully remove the engine mount beams
and drill a 6mm hole through the fire-wall
at each of the four marks made above.
! Align the mark on both engine mount
beams with the mark on the fuselage
Using a pencil or felt tipped pen, mark the fire wall where the four
holes are to be drilled.
6mm
PA-38 Tomahawk 6- Engine mount
A
FRONT-VIEW
B
B’
Mark on the firewall
Mark on the firewall
CA
Thin CA (use
very little)
Reposition the engine mount beams
on to the fire-wall and secure them with
four 4x25mm hex bolts.
...................4
....................4
4x25mm hex bolt - washer
Blind-nut
Insert the blind-nut onto each
of the four holes make above.
The center of the engine axis and the angle of
inclination of the firewall have been designed
correctly, should not be modified.

PA-38 Tomahawk 7- Engine
133mm
Position the engine to the engine mounts so the distance
from the prop hub to the fire-wall is 133mm (*).
Mark the engine mounting plate where the four holes are
to be drilled.
Note: This distance (*) depends on the type of engine you
use.
Remove the engine and drill a 3mm holes through the
beam at each of the four marks made above.
Marking sure that you drill the hole perpendicular to the
beam of the engine mount.
Reposition the engine on the engine mount beams,
aligning it with the holes. Secure the engine to the
engine mount using four 3x25mm hex bolts.
Note: Apply Silicon sealer to each of the
3x25mm bolt and nut.
3x25mm hex bolt
...4
...4

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 3mm hole through the
plywood at each of the four marks
marked .
3mm
5mm
PA-38 Tomahawk 8- Electric motor mount
3x15mm hex bolt
Nut .............4
...4
1 2 3
4 5
6

5x80mm bolt.....4
5mm nut..........12
5mm washer...16
Attach the four 5x80mm bolts
and nuts to the fire-wall as shown.
PA-38 Tomahawk 8- Electric motor mount
133mm
Position the motor mount to so the distance
from the prop hub to the fire-wall is 133mm .

VERTICAL STABILIZER
CA
SILICON
Threadlocker
PA-38 Tomahawk 9- Elevator servo mount
X
........2
2mm connector
1
2

When you are satisfied with the alignment, use
a pencil to trace around the right and left of
the stabilizer where it meets the vertical stabilizer.
VERTICAL STABILIZER
HORIZONTAL STABILIZER
PA-38 Tomahawk 10- Horizontal stabilizer
1
2

CA
3
4
5
PA-38 Tomahawk 11- Horizontal stabilizer continued
Cut away only
the covering
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.
! Securely glue together. If coming off
during fly, you lose control of your air plane.
Use a small glue faucet, Apply the thin CA glue on
the horizontal stabilizer where it contacts the vertical
stabilzer (both the top and bottom sides).
Thin CA
Thin CA
! Securely glue together. If coming off
during fly, you lose control of your air plane.

Thin CA
! Securely glue together. If coming off
during fly, you lose control of your air plane.
PA-38 Tomahawk 12- Rudder

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.
PA-38 Tomahawk 13- Attach the stabilizer to the fuselage

CA
Remove the 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.
PA-38 Tomahawk 14- Attach the stabilizer to the fuselage continued
Thin CA
Use a small glue faucet, Apply the thin CA glue on
the vertical stabilizer where it contacts the fuselage
(both the top and bottom sides).
! Securely glue together. If coming off
during fly, you lose control of your air plane.

PA-38 Tomahawk 15- Elevator linkage
...2
1.5x175mm rod

SILICON
Threadlocker
Rudder servo
Nose gear servo
Throttle servo
2x950mm Rudder push-rod
1.2x550mm Nose gear / Throttle push-rod
2mm connector
........1
........2
........3
PA-38 Tomahawk 16- Rudder - Nose gear - Throttle linkages linkage
pull up to move

7mm dia. plastic bolt
.....2
PA-38 Tomahawk 17- Joining the wing