
The World Models
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The World Models
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The World Models
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The World Models
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The World Models
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* Specifications are subject to change without notice. *
Requires: 50 c.c. gasoline engine,
5-channel radio w/ 8 high torque servos.
INSTRUCTION MANUAL
Warning! This model is not a toy.
It is designed for maximum performance. Please seek advice if one is not familiar with this kind
of engine powered precision model. Operating this model without prior preparation may cause
injuries. Remember, safety is the most important thing. Always keep this instruction manual at
hand for quick reference.
Wing Span 108 in / 2740 mm
Wing Area 1302 sq in / 84 sq dm
Flying Weight 20.5 lbs / 9300 g
Fuselage Length 68.5 in / 1740 mm
Specifications
FACTORY PRE-FABRICATED
ALMOST-READY-TO-FLY (ARF) SERIES
MADE IN CHINA
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www.theworldmodels.com
1/4 PIPER PA-25 PAWNEE
1/4 PIPER PA-25 PAWNEE
(
A318
)

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P.1
INDEX
Read through the manual before you begin, so you will have an overall idea of what to do.
BEFORE YOU BEGIN
BEFORE YOU BEGIN
PARTS LIST
ASSEMBLY
SAFETY PRECAUTIONS
P.1
P.2
P.3-P.12
P.12
Check all parts. If you find any defective or missing parts contact your local dealer. Please
DRY FIT and check for defects for all parts that will require CA or Epoxy for final assembly.
Any parts you find to be defective after the gluing process may be difficult to remove for
warranty replacement. The manufacturer will replace any defective parts, but will not extend
to the parts that are good before gluing to defective parts during assembly. Warranty will
not cover any parts modified by customer.
Symbols used throughout this instruction manual comprise of the following :-
1
2
3
Cut off shaded portion.
Ensure smooth non-binding
movement while assembling.
Apply instant glue
(C.A.glue, super glue.)
Assemble left and right
sides the same way.
Peel off shaded portion
covering film.
Pay close attention here!
Apply epoxy glue.
Must be purchased separately !
Drill holes with the specified
diameter (here: 3mm).
Pierce the shaded portion
covering film.
3mm
Do not overlook this symbol !
Warning!
Apply thread locker
1/4 PIPER PA-25 PAWNEE
1/4 PIPER PA-25 PAWNEE

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Parts List
COVERING:
TOUGHLON STL 100 WHITE
TOUGHLON STL 424 CHECKER(FER/WHT)
LIGHTEX SGX 311 FERRARI RED
LIGHTEX SGX 201 BLACK
P.2
1. MAIN WING -- 1 pair
2. SOCKET HEAD SCREW M4x50mm -- 4 pcs
M4 NYLON INSERT LOCK NUT -- 4 pcs
SWIVEL CLEVIS HORN FAIRING PL4610010 -- 4 sets
PUSHROD M3x112mm w/ Threads (For Aileron) -- 2 pcs
PUSHROD M3x96mm w/ Threads (For Flap) -- 2 pcs
HEAVY DUTY HORN BRACKET PL4112400 -- 4 sets
HEAVY DUTY CLEVIS PL4112200 -- 8 sets
HEAVY DUTY SERVO HORN PL4120300 -- 4 sets
SERVO MOUNTING PANEL PL5310010 (For Aileron Servo) -- 1 pair
SERVO MOUNTING PANEL PL5310010(L) (For Flap Servo) -- 2 pcs
SCREW PWA2.3x8mm -- 16 pcs
3. SOCKET HEAD SCREW M3x15mm -- 4 pcs
WASHER d3.2xD12mm -- 4 pcs
MAIN WING STRUTS -- 1 pair
M3 NYLON INSERT LOCK NUT -- 4 pcs
WASHER d3xD7mm -- 16 pcs
SOCKET HEAD SCREW M3x14mm -- 4 pcs
SOCKET HEAD SCREW M3x12mm -- 4 pcs
WING STRUT WIRE D2mm -- 2 pcs
WIRE BRACKET PL5330030W -- 8 pcs
MAIN WING STRUT COVER -- 2 pairs
SCREW PM3x10mm -- 4 pcs
DOUBLE-SIDED TAPE 1000mm -- 1 pc.
4. FUSELAGE -- 1 pc.
STABILIZER & ELEVATOR -- 1 pc.
5. VERTICAL FIN & RUDDER -- 1 pc.
6. TAIL LANDING GEAR PL3410032 --1 set
SCREW PA3x18mm -- 3 pcs
SCREW PWA2.5x12mm -- 2 pcs
SPRING Ø5x50mm -- 2 pcs
COPPER PLATE (For Stays on Tail Fuselage Bottom) 1.5x12x60mm -- 1 pc.
7. MAIN LANDING GEAR -- 1 set
SCREW PA3x18mm -- 12 pcs
WASHER d3xD7mm -- 12 pcs
MOUNTING PLATE PL4114020 12x20mm -- 6 pcs
TAPE 0.5x20x157mm -- 1 pc.
8. WHEEL Ø118MM PL3115118 -- 1 pair
SCREW PA1.7x8mm -- 6 pcs
WHEEL COVER -- 1 pair
COLLAR Ø5.1mm w/ set screw -- 4 sets
9. BLIND NUT M5 -- 4 pcs
WASHER d5xD12mm -- 4 pcs
SOCKET HEAD SCREW M5x50mm -- 4 pcs
THROTTLE PUSHROD Ø1.8x310mm -- 1 pc.
PLASTIC TUBE d2.5xD4x120mm -- 1 pc.
10. COWLING -- 1 pc.
TRANSPARENT 3D TEMPLATE -- 1 pc.
SCREW PA3x12mm -- 6 pcs
WASHER d3xD7mm -- 6 pcs
SILICON GROMMET d2.5xD8.5mm PL1285135 -- 6 pcs
SPINNER Ø89MM PH22W0890 -- 1 set
11. SOCKET HEAD SCREW M4x65mm -- 2 pcs
M4 NYLON INSERT LOCK NUT -- 2 pcs
SWIVEL CLEVIS HORN FAIRING PL4610010 -- 2 sets
PUSHROD M3x112mm w/ Threads (For Elevator) -- 2 pcs
HEAVY DUTY CLEVIS PL4112200 -- 4 sets
HEAVY DUTY SERVO HORN PL4120300 -- 2 sets
HEAVY DUTY HORN BRACKET PL4112400 -- 2 sets
SERVO MOUNTING PANEL PL5310010 (For Elevator Servo) -- 1 pair
SCREW PWA2.3x8mm -- 8 pcs
12. THREADED ROD M4x100mm -- 1 pc.
M4 NYLON INSERT LOCK NUT -- 2 pcs
SWIVEL CLEVIS HORN FAIRING PL4610020 -- 1 set
HEAVY DUTY CLEVIS PL4112200 -- 2 sets
HEAVY DUTY HORN BRACKET PL4112400 -- 2 sets
EYE SCREW M2.5x8x25mm HW4202101 -- 2 pcs
WIRE Ø1x1000mm HW4201311 -- 2 pcs
COPPER TUBE d2.5xD3.2x8mm (For Rudder) -- 2 pcs
13. WIRE Ø1x1500mm -- 1 pc.
COPPER TUBE d2.5xD3.2x8mm -- 8 pcs
FLYING WIRE BRACKET -- 6 pcs
SCREW PM2x16mm -- 6 pcs
M2 NUT -- 6 pcs
WASHER d2xD5mm -- 12 pcs
EYE SCREW -- 6 pcs
CLEVIS -- 6 pcs
CLIP PIN -- 6 pcs
14. LINKAGE CONNECTOR Ø2.1mm w/ set screw -- 1 set
15. FUEL TANK 800cc PL1111810G -- 1 set
CABLE TIE (For Fuel Tank) 2.5x8x500mm -- 2 pcs
16. HEAVY DUTY SERVO HORN PL4120800 -- 1 pc.
HEAVY DUTY CLEVIS PL4112200 -- 2 set
EYE SCREW M2.5x8x25mm HW4202101 -- 2 pcs
COPPER TUBE d2.5xD3.2x8mm (For Rudder) -- 2 pcs
SPONGE 10x80x200mm -- 2 pcs
BATTERY TIE 200mm -- 2 pcs
17. PILOT PC101110B -- 1 pc.
INSTRUMENT PANEL -- 1 pc.
DOUBLE-SIDED TAPE -- 2 pcs
PLASTIC PLATE -- 1 pc.
CABLE TIE 2.5x5x300mm -- 2 pcs
CANOPY -- 1 pc.
18. WING JOINER 443x20x5mm -- 2 pcs
WING JOINER 443x15x5mm -- 2 pcs
SOCKET HEAD SCREW M3x12mm -- 8 pcs
WASHER d3xD7mm -- 8 pcs
THREADED ROD M4x255mm -- 1 pc.
M4 NYLON INSERT LOCK NUT -- 2 pcs
WASHER d4xD12mm -- 2 pcs
ALUMINIUM PLATE 2x25x85mm -- 4 pcs
19. DECALS: A318DEC -- 1 set

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P.3
Main Wing
1
Bottom View
Aileron Servo Lead
Pre-glued
Bottom View
Bottom View
M4
4
Nylon Insert Lock Nut
4
PWA2.3x8mm Screw
16
Aileron & Flap Servos
2
M3x96mm
Pushrod w/ Threads(For Flap)
M3x112mm
Pushrod w/ Threads(For Aileron)
M2x8mm
Socket Head Screw
M2 Nut
PL4120300
1.5mm
1.5mm 1.5mm
M4x50mm
Socket Head Screw
PWA2.3x8mm
M2 Nylon Insert
M2 x 10mm
Lock Nut
Pushrod
Heavy Duty
Clevis
M2 x 10mm
PA1.7 x 8mm
Heavy Duty Clevis
Pushrod
Heavy Duty Horn Bracket
M4 x 50mm
M2 Nylon Insert
Lock Nut
M4 Nylon
Insert Lock
Nut

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Vertical Fin & Rudder
5
Wing Struts
3
M3x15mm
Socket Head Screw
d3.2xD12mm Washer
PM3x10mm
Screw
d3xD7mm
Washer
M3 Nylon Insert Lock Nut
4
4
16
4
Stabilizer & Elevator
4
(Stabilizer)
(Main Wing)
B B'
B=B'
Temporary install the main
wing, adjust leveling of the
stabilizer to make it as
parallel to the main wing
as possible.
Completed
Completed
P.4
474mm371mm
171mm
153mm
131mm
222mm
C
C C
C
d3.2xD12mm W asher
d3xD7mm W asher
d3xD7mm W asher
d3xD7mm W asher
d3xD7mm W asher
M3x15mm
Double-sided T ape
Main Wing Strut Cover
Double-sided T ape
M3x14mm
M3x12mm
M3 Nylon Insert Lock Nut
PM3x10mm
M3x14mm
Socket Head Screw
4
M3x12mm
Socket Head Screw
4
4
Remove coverings for all surfaces in contact before
applying A/B epoxy glue.
Remove coverings for all surfaces in
contact before applying A/B epoxy glue.
Pre-glued

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P.5
3
2
PA1.7X8mm Screw
6
4
6
D5.1mm
Collar
12
12
Main Landing Gear
7
Tail Landing Gear
6
Main
Wheel
8
Bottom View
Bottom View
Bottom View
1.5mm
PA3x18mm Screw
PA3x18mm Screw
PWA2.5x12mm
Screw
PWA2.5 x 12mm
P A3 x18mm
Copper Plate
1.5x12x60mm
Spring
2.5mm
1.5mm
M3 x 3mm
Set Screw
M3 x 3mm
Set Screw
Wheel Ø118mm
Wheel Cover
5.1 mm Collar
5.1 mm Collar
PA1.7x8 mm
PA3x18mm
Washer d3xD7mm
Mounting Plate
Tape
Front
Front
d3xD7mm Washer

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9
P.6
10
Engine
Cowling
d5xD12mm Washer
M5 Blind Nut
4
4
4
M5x50 SOCKET HEAD SCREW
Washer d5xD12mm
Throttle Pushrod
Ø1.8x310mm
Spinner Ø89mm
Plastic Tube
d2.5xD4x120mm
M5 Blind Nut
M5x50 mm
Please refer to the attached sheet for usage of the transparent
3D template.
First insert the grommet to the cowling then apply screw.
207mm
8.15 in.
PA3x12mm Screw
d2.5x8.5mm Silicon Grommet
6
6
d3xD7mm Washer
6
Cowling
Fuselage
d2.5x8.5mm
Silicon Grommet
PA3x12mm
Washer
d3xD7mm

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Manufacturing Co., Ltd.
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Manufacturing Co., Ltd.
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P.7
11
Elevator Pushrod
Bottom View
M2x8mm
Socket Head Screw
M2 Nut
PL4120300
1.5mm
PWA2.3x8mm
M2 Nylon Insert
M2 x 10mm
Lock Nut
Pushrod
Heavy Duty
Clevis
M2 x 10mm
PA1.7 x 8mm
Heavy Duty Clevis
Pushrod
Heavy Duty Horn Bracket
M4 x 65mm
M2 Nylon Insert
Lock Nut
M4 Nylon
Insert Lock
Nut
M4
2
Nylon Insert Lock Nut
2
PWA2.3x8mm Screw
8
M4x65mm
Socket Head Screw
12
Rudder
Pullwire
Bottom ViewBottom View
M4x100mm
Threaded Rod
1
2
M4
Nylon Insert Lock Nut
Copper Tube
Rigging Coupler
Clevis
M2x10mm
M4x100mm
M2 Nut
Ø
1x1000mm
Rudder Pullwire
Copper Tube
Wire
Press down the
center 1/3 portion
M2.5x8x25mm
d2.5xD3.2x8mm
Heavy Duty Horn
Bracket
M4 Nylon Insert
Lock Nut

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The World Models
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The World Models
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The World Models
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P.8
13
Flying Wire
PM2x16mm Screw
M2 Nut
6
6
d2xD5mm Washer
12
Copper Tube
Wire
Press down the
center 1/3 portion
M2
PM2x16mm
PM2x16mm
d2.5xD3.2x8mm
2mm
2mm
d2xD5mm
Washer
M2 NUT
14
Throttle Pushrod
3x3mm
Washer
2mm
Washer
2mm
M2 Nut
Throttle Servo.
1.5mm
Servo Set
3x3mm Set Screw
M2 Nut
Linkage Connector
1
1
1
2
2mm Washer
Please refer to the attached sheet for linkage connector installation.

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The World Models
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The World Models
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The World Models
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The World Models
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The World Models
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ww w. t he wo rl dm od el s. c om
The World Models
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ww w. t he wo rl dm od el s. c om
The World Models
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ww w. t he wo rl dm od el s. c om
The World Models
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The World Models
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The World Models
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P.9
16
Radio Equipment
lnstall and arrange
the servo as shown
in the diagram.
Sponge
Battery
Battery TieSwitch
Receiver
15
Fuel Tank
Bottom ViewBottom View
Bottom View
Bottom View
Fuel Tank
800cc
CABLE TIE
2.5x8x500mm
Throttle Pushrod
Ø40x160mm
Throttle Servo
Plastic Tube
d2xD3x350 mm
ON
OFF
Bottom View
Bottom ViewBottom View
Front
Copper Tube
d2.5xD3.2x8mm
Heavy Duty
Clevis
M2x10mm
M2x8mm
M2 Nut
Heavy Duty Servo Horn
PL4120800
M2 Nut
Ø
1x1000mm
Rudder Pullwire
Eye Screw
M2.5x8x25mm
1.5mm
ON
OFF

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The World Models
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The World Models
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P.10
18
Main Wing
8
d4 x D12mm Washer
4
d3 x D7mm Washer
8
Washer
d4 x D12mm
M4 Nylon Insert
Lock Nut
M4x255mm
M4x255mm
Threaded Rod
M3x12mm
Screw
1
2
M4
Nylon Insert Lock Nut
Bottom View Completed
17
Pilot & Canopy
Cable Tie
Double-sided Tape
M3x12mm
Aluminium Plate
d3xD7mm Washer
Wing Joiner
443x20x5mm
Wing Joiner
443x15x5mm
Plastic Plate
PilotInstrument panel

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P.11
19
Wing Setting
A
B
C
A’
B’
C’
A=A’
B=B’ C=C’
Adjust the wing and fuselage configuration as shown in the diagrams.

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The World Models
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The World Models
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The World Models
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The World Models
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P.12
20
Control Throws
21
C.G
.
100 mm
http://www.theworldmodels.com/para/instruction/instructionManuals.php
3.9 in.
C.G.
Important Safety Precautions
Warning!
#
First time flyer should never fly by himself / herself. Assistance from experienced flyer is absolutely
necessary.
#
Pre-flight adjustment must be done before flying, it is very dangerous to fly a badly pre-adjusted
aircraft.
#
is specially designed to be powered by 50c.c. gasoline engine, using a more
powerful engine does not mean better performance. In fact, over powered engine may cause
structural damage and injuries.
#
Make sure the air field is spacious, never fly the plane too close to people and never get too close
to a running propeller.
# If you find wrinkles on the covering as a result of weather changes, you can use hot iron to remove
the wrinkles. Please begin with lower temperature setting and gradually raise the temperature until
the wrinkles are gone. Too hot an iron may damage the covering.
Don't use hot iron near the seams
or edges, hot iron will melt the glue and shrink the covering at the same time, causing the seams to pull
away.
# Check and re-tighten up all factory assembled screws, use thread locker if necessary.
Adjust the control throws as shown in the diagram.
These throws are good for general flying. You can
adjust according to your personal preference.
50mm
Flaps (near fuselage)
Rudder
40mm
40mm
35mm
35mm
Elevator
20mm
20mm
Ailerons (away from fuselage)
1/4 PIPER PA-25 PAWNEE
1/4 PIPER PA-25 PAWNEE
The ideal C.G. position is 100mm (3.9in.) behind the leading edge measured at where the wing meets the
fuselage. In order to obtain the C.G. specified, add weight to the fuselage or move the battery position.
Check the C.G. before flying.
If you are converting this model to electric, please move the C.G. forward 10% of current C.G. distance from
leading edge to compensate for weight of fuel.

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Product Registration Form (US Customers)
We would like to share with you any relevant information regarding your model, including
product news and free upgrade parts when applicable. Please fill in the following and send to
AirBorne Models, 4749-K, Bennett Drive, Livermore, CA 94551 USA.
1. Name:______________________________________________
2. Address:____________________________________________
3. Phone #:____________________ E-mail:__________________
4. Model:______________________________________________
Wing QC#__________ Fuselage QC# _______________________
(QC numbers are stamped on wing and fuselage)
5. Date of Purchase:_____________________________________
6. Store Name: _________________________________________
Please c all AirBorne Models at 925 371 0 922 for an y a ssist ance in fillin g this form.
Thank you very much for purchasing our pr oduct.
LINKAGE CONNECTOR
HW7111050 & HW7111060
After fastening the round nut, make sure that
the linkage connector can rotate freely.
Drill 2mm hole at servo horn.
Insert linkage connector
into servo horn.
Make sure shoulder of
screw is cleared from
servo horn.
Add washer to reduce
play if necessary.
Shoulder
Tighten up the round nut
against the shoulder. Apply
CA or permanent thread
locker.

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This transparent 3D template
is used for position guidance
of the actual cutting of the
pre-painted cowling.
Usage of the transparent 3D template
Simply cut the transparent 3D template to fit your engine and
exhaust pipe, then slide onto the actual cowling and use as
template to mark the openings required for final cutting.
1 2
3 4

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