ST
- R E A D Y- T
Radio required: 4 channels, 4 servos airplane radio
Specifications
Wing Span
Wing Area
Flying Weight
Fuselage Length
45.5 in /1160mm
431 sq in / 27.8 sq dm
3.5 lbs / 1500 g
40.5 in / 1030 mm
* Specifications are subject to change without notice.*
Wa r n i n g ! T h i s m o d e l i s n o t a t o y.
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.
THE WORLD MODELS
MANUFACTURING CO., LTD.
FACTORY PRE-FABRICATED
ALMOST-READY-TO-FLY(ARF)SERIES
MADE IN CHINA
www.theworldmodels.com
LY
0.25 cubic inch displacement 2 stroke ( glow)
-F
AL
O
O
M
INSTRUCTION MANUAL
INDEX
BEFORE YOU BEGIN
P. 1
PARTS LIST
P. 2
ASSEMBLY
P. 3 -9
SAFETY PRECAUTIONS
P.9
BEFORE YOU BEGIN
Read through the manual before you begin, so you will have an overall idea of what to do.
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 be difficult to extend to the good parts that are
good before gluing to defective parts during assembly.
Symbols used throughout this instruction manual comprise of the following : -
Apply epoxy glue.
Apply instant glue
(C.A.glue, super glue.)
Assemble left and right
sides the same way.
Ensure smooth non-binding
movement while assembling.
Peel off shaded portion
covering film.
Cut off shaded portion.
Drill holes with the specified
diameter (here: 3mm).
Must be purchased separately!
Pay close attention here!
Do not overlook this symbol!
Pierce the shaded portion
covering film.
P. 1
Parts List
1. FUSELAGE -- 1 pc.
2. MAIN WING -- 1 pair
3. STABILIZER & ELEVATOR -- 1 set
4. VERTICAL FIN & RUDDER -- 1 set
5. FUEL TANK 200cc -- 1 set
6. SPINNER 40mm --1 pc.
7. SPONGE 10x80x200mm (For Radio equipment) -- 2 pcs
8. WHEEL 50mm --3 pcs
14. WOODEN PARTS :-BALSA WOOD 10x 10 x 66mm (For Fixing Fuel Tank ) --1 pc.
PLYWOOD 3 x 12 x 30mm ( For Aileron Servo) --2 pcs.
PLYWOOD 3 x 66 x106mm (Servos Stand) --1 pc.
PLYWOOD 6 x 16 x100mm (Wing Joiner) --1 pc.
WOODEN 6 x 102 (For Fixing Wing) --2 pcs.
WOODEN 8 x 300 (For Elevator & Rudder Servos) --2 pcs.
15 PLASTIC PARTS :-CLEVIS -- 4 pcs
STRAPER -- 2 pcs
HORN -- 2 sets
RING 2.3mm -- 2 pcs
RUBBER BAND 60 x 4mm -- 4 pcs
STEERING ARM --1 pc.
STEERING ARM STAND --1 pc.
PLATE (For Main Landing Gear) -- 2 pcs
9. FRONT LANDING GEAR -- 1 pc.
10. MAIN LANDING GEAR -- 1 pair
11. FIN TIP 3x19x70mm -- 1 pc.
12. PUSHROD:-METAL ROD 1.6x310mm w/Plastic Tube
(For Front Landing Gear) -- 1 set
METAL ROD 1.8x120mm (For Elevator & Rudder ) -- 2 pcs
METAL ROD 1.8x85mm w/Threads (For Alieron) -- 2 pcs
METAL ROD 1.8x220mm w/Threads (For Elevator -- 1 pc.
METAL ROD 1.8x240mm w/Threads (For Rudder) -- 1 pc.
13. THROTTLE PUSHWIRE 1.2 x 340mm
w/Plastic tube d2xD3x160mm -- 1 set
16. METAL PARTS :-LINKAGE CONNECTOR -- 4 sets
COLLAR 3.6mm w/set screw -- 7 sets
NUT 3mm -- 8 pcs
SCREW PA2.6 x 12mm -- 4 pcs
SCREW PA3 x 10mm -- 4 pcs
SCREW PM2 x 12mm -- 4 pcs
SCREW PM3 x 25mm -- 4 pcs
WASHER d3xD7mm -- 8 pcs
17. FUEL TUBE 6 x 5mm -- 6 pcs
HEAT-SHRINK TUBE 8x40mm -- 4 pcs
18. DECALS : ST 200 017 --1 set
P. 2
1 Main Wing
Securely glue together. If coming
off during flights, you lose control
of your airplane which leads to
accidets!
2 Aileron Servo
Plywood
3 x 12 x 30mm
1mm
Plywood
3 x 12 x 30mm
Cut out the covering film
3 Aileron Servo
Straper
Fuel Tube
6 x 5mm -- 4 pcs
Clevis
Ring
P. 3
4 Landing Gear
Way A:
Way B:
5 Landing Gear
6 Front Wheel
3mm Set Screw
For Way B
4
3.6mm Collar
3
3.6mm Collar
3mm Set Screw
Completed
3mm Set Screw
Front Wheel
PushWire
Steering Arm
Front View
3.6mm Collar
P. 4
3.6mm Collar
7 Fuel Tank
Fuel Tank 200cc
Install Balsa 10 x 10 x 66mm
(For fixing fuel tank)
Fuel Tank
Top View
8 Engine
PM3 x 25mm
PM3 x 25mm Screw
4
3mm
3mm Washer
Install Engine position
8
Spinner
40mm
3mm Nut
8
Throttle Pushwire
w/plastic tube
95mm
3.74 in
3mm
3mm
9 Stabilizer
(Stabilizer)
Tempo rary i ns tall t he m ain wi ng , a dj us t
(Main Wing)
leveling of t he s tabi lizer t o m ake i t a s
B B'
pa rallel t o t he m ain wi ng a s po ssibl e.
A'
A
Peel off shaded portion
covering film
A = A'
P. 5
10 Vertical Fin
A
A'
A = A'
11 Servo Set
LINKAGE CONNECTOR
3 x 3mm Set Screw
4
Linkage Connector
4
3mm
Throttle Pushwire,
Rudder Pushrod,
Elevator Pushrod.
Included with the Radio Set.
2mm Nut
2mm
4
2mm
2mm Washer
Throttle Servo.Rudder Servo.
Elevator Servo.
2mm
4
Please refer to attached sheet for linkage stopper installation.
Elevator Pushrod
12 Radio Equipment
Fr
o
Wooden Rod
Ø8x300mm
nt
Rudder Pushrod
Metal Rod
Ø1.8x120mm
Throttle Pushwire
Plywood 3x66x106mm
Front Wheel
Pushwire
P. 6
Top View
13 Radio Equipment
Install and arrange the servo as shown in the diagram.
Throttle
Servo
Elevator
Servo
Fuel Tank
Battery
Recevier
Rudder
Servo
Top View
14 Rudder Pushrod
PM 2 x 12mm
Rudder
horn
Scre w
2
Line up the holes
of the horn to the
edge of the rudder.
See diagram.
Rudder Pushrod
Clevis
Fuel Tube
6 x 5mm
PM2 x12mm
Horn
Elevator horn
15 Elevator Pushrod
PM 2 x 12mm
Line u p t he h oles
of t he h orn t o t he
edge o f t he e leva tor.
See d iagram.
Scre w
2
PM 2 x 12mm
Cl e v i s
Fuel Tube
6 x5mm
To Elevator
Servo
Horn
Bo t t o m Vi e w
P. 7
16 Main Wing
Mount the rubber bands following step
one to step four and repeat once. In t
otal, eight rubber bands are used for
mounting.
Rubber Band
60 x 4mm Rubber Band
8
St
ep
1
Ste
p3
S te p 4
St
ep
2
Wooden Ø6x102mm
17 Wing Setting
Adjust the wing and fuselage configuration
shown as in the diagrams.
A'
A
B
A = A'
C
B'
C'
B = B'
C = C'
Adjust the control throws as shown in
the diagram. These throws are good for
general flying. You can adjust according
to your personal preference.
18 Control Throws
Elevator
10mm
10mm
Rudder
20mm
20mm
Aileron
5mm
5mm
P. 8
19 C. G.
The ideal C.G. position is 85mm(3.35 in.) 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.
85mm
3.35 in
Important Safety Precautions
# 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.
#
HAPPY FLY 20 is specially designed to be powered by 0.25 2 stroke glow
engine, using a more powerful engine does not mean better performance. In fact, over
powered engine may cause severe damge 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.
#Check and re-tighten up all factory assembled screws, use thread locker if applicable.
A022S0606
LINKAGE CONNECTOR
HW7111030 & HW7111060
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.
After fastening the round nut, make sure that
the linkage connector can rotate freely.
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
Air Borne Models,2403,Research Drive ,Livermore, CA 94550.U.S. A.
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 call AirBorne Models at 925 371 0922 for any assistance in filling this form.
Thank you very much for purchasing our product.
Pattern
Warbirds
Funfly
Scale
Sports
Trainer
Covering
(Lightex / Toughlon)
Electric
Glider
Boat
Accessories
http://www.theworldmodels.com
A022S0606