The World Models Manufacturing SPOT-ON 50 AEROBATICS User manual

Aerobatics
50
Wing Span
Wing Area
Flying Weight
Fuselage Length
53.5 in / 1 0 mm
538 sq in / 34.7 sq dm
5.3 lb / 2400 g
57 in / 1450 mm
36
INSTRUCTION MANUAL
Specifications
0 52-0.7 cu. in. displacement 4-stroke. 2
Require : 4 -channel w 5 servoss radio / standard
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.
* Specifications are subject to change without notice.*
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The World Models
Manufacturing Co., LTD.
www.theworldmodels.com
ALMOST-READY-TO-FLY (ARF) SERIES
MADE IN CHINA
FACTORY PRE-FABRICATED
A249NPO27251110

Aerobatics
50
P.1
P. 3 -11
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.
INDEX
BEFORE YOU BEGIN
PARTS LIST
ASSEMBLY
SAFETY PRECAUTIONS
P. 1
P. 2
P.11
BEFORE YOU BEGIN
Read through the manual before you begin, so you will have an overall idea of what to do.
Symbols used throughout this instruction manual comprise of the following : -
1
2
3
3mm
Do not overlook this symbol!
Cut off shaded portion.
Peel off shaded portion
covering film.
Pay close attention here!
Pierce the shaded portion
covering film.
Must be purchased separately!
Drill holes with the specified
diameter (here: 3mm).
Ensure smooth non-binding
movement while assembling.
Apply instant glue
(C.A. glue, super glue).
Assemble left and right
sides the same way.
Apply epoxy glue.
Apply thread locker
Warning!
A249NPO27251110

Parts List
P.2
COVERING:
TOUGHLON STL100 WHITE
TOUGHLON STL351 DARK BLUE
SGX251 SKY BLUE
SGX311 FERRARI RED
SGX313 PINK
SGX331 CUB YELLOW
LIGHTEX
LIGHTEX
LIGHTEX
LIGHTEX
1. MAIN WING -- 1 pair
2. WING TUBE Ø16x285mm -- 1 pc.
3. SCREW PB2x22mm -- 4 pcs
PUSHROD Ø1.8x90mm w/ Threads (For Aileron) -- 2 pcs
CLEVIS -- 2 pcs
STRAPER -- 2 pcs
FUEL TUBE Ø6x5mm -- 4 pcs
HORN -- 2 sets
SERVO MOUNTING PANEL 2x68x78mm (For Aileron Servos) -- 1 pair
SCREW PWA2x8mm -- 8 pcs
4. STABILIZER & ELEVATOR -- 1 set
FUSELAGE -- 1 pc.
5. VERTICAL FIN & RUDDER -- 1 set
6. TAIL LANDING GEAR Ø2mm -- 1 set
SCREW PA3x12mm -- 2 pcs
COLLAR Ø2.1mm w/ set screw -- 1 set
TAIL WHEEL Ø25mm -- 1 pc.
7. PUSHROD Ø1.8x730mm w/ Threads (For Elevator) -- 2 pcs
SCREW PB2x14mm -- 4 pcs
CLEVIS -- 2 pcs
FUEL TUBE Ø6x5mm -- 2 pcs
HORN -- 2 sets
8. RIGGING COUPLER Ø1.8x27mm w/ Threads (For Rudder) -- 2 pcs
WIRE Ø1x880mm (For Rudder) -- 2 pcs
COPPER TUBE d2.5x3.2x8mm (For Rudder) -- 2 pcs
SCREW PM2x20mm -- 2 pcs
M2 NUT -- 2 pcs
CLEVIS -- 2 pcs
FUEL TUBE Ø6x5mm -- 2 pcs
HORN (Without Base For Rudder) -- 2 sets
9. MAIN LANDING GEAR -- 1 pair
COLLAR Ø4.1mm w/ set screw -- 4 sets
SOCKET HEAD SCREW M2.5x12mm -- 6 pcs
SCREW PM4x38mm -- 2 pcs
SCREW PA2.6x6mm -- 4 pcs
WASHER d2.5xD8mm -- 6 pcs
WASHER d3xD7mm -- 4 pcs
WASHER d4.5xD9mm -- 4 pcs
M4 NUT -- 2 pcs
MAIN WHEEL Ø55mm -- 2 pcs
WHEEL PANTS -- 1 pair
ALUMINUM PLATE 1mm -- 1 pair
,
10. ENGINE MOUNT PL5111050 -- 1 set
SOCKET HEAD SCREW M4x25mm -- 4 pcs
WASHER d4.5xD9mm -- 4 pcs
11. FUEL TANK 320cc -- 1 set
BALSA 8x12x84.5mm (For Fixing Fuel Tank) -- 1 pc.
12. LINKAGE CONNECTOR Ø2.1mm --1 set
13. SOCKET HEAD SCREW M3.5x30mm -- 4 pcs
M3.5 NUT -- 8 pcs
WASHER d3.5xD8mm -- 8 pcs
THROTTLE PUSHROD Ø1.2x480mm -- 1 pc.
PLASTIC TUBE d2xD3x300mm -- 1 pc.
14. PUSHROD Ø1.8x110mm (For Elevator) -- 1 pc.
RIGGING Z BEND Ø1.8x27mm (For Rudder) -- 2 pcs
COPPER TUBE d2.5x3.2x8mm (For Rudder) -- 2 pcs
FUEL TUBE Ø6x5mm -- 1 pc.
STRAPER -- 1 pc.
PUSHROD CONNECTOR 8x9x20mm -- 1 set
SPONGE 60x70x90mm (For Radio Equipment) -- 1 pc.
15. SOCKET HEAD SCREW M4x35mm -- 2 pcs
WASHER d4xD15mm -- 2 pcs
BELLY PAN -- 1 pc.
16. CANOPY -- 1 pc.
SCREW PWA2.3x8mm -- 4 pcs
SILICON GROMMET d1.5xD6.5mm -- 4 pcs
DOUBLE-SIDED TAPE 900mm -- 1 pc.
17. COWLING -- 1 pc.
TRANSPARENT 3D TEMPLATE -- 1 pc.
SCREW PWA2.6x12mm -- 4 pcs
SILICON GROMMET d1.5xD6.5mm -- 4 pcs
SPINNER Ø62mm -- 1 set
18. DECALS:A249N DEC -- 1 set
A249NPO27251110

Wing Tube Ø16x285mm
1
Main Wing
2
Main Wing
P.3
Make sure to glue securely. If not properly glued, a failure in fight may occur.
Please apply glue to all surfaces of wing tube.
Aileron Servo Lead
Completed
Apply instant type CA glue to both sides of each hinge.
Bottom View
Aileron Servo Lead
A249NPO27251110

Aileron Servo
3
Stabilizer / Elevator
4
Apply instant type CA
glue to both sides of
each hinge.
P.4
A A'
A=A'
(Stabilizer)
(Main Wing)
B B'
B=B'
* Also refer to step 18 Wing Setting
PB2x22mm Screw
4
8
PWA2x8mm Screw
Straper Fuel Tube
Ø6x5mm
Pushrod Ø1.8x90mm
Bottom View
PB2x22mm
Clevis
Fuel Tube
Ø6x5mm
1.5mm
PWA 2 x 8mm
1mm
TWM Pl8210010
CLEVIS WRENCH
A249NPO27251110

2mm
1.5mm
Bottom View
P.5
6Tail Landing Gear
2.1mm Collar
2
PA3 x 12mm Screw
2
3 x 3mm Set Screw
PA3 x 12mm WHEEL Ø25mm
2.1mm Collar
Vertical Fin & Rudder
5
Apply instant type CA glue to both
sides of each hinge.
C=C'
CC
Completed
A249NPO27251110

≈260mm
≈48mm
Bottom View
7Elevator Pushrod
P.6
Rudder Pullwire
8
≈125mm
Ø1mm pilot holes for World Models tri-horn are pre-drilled.
Please look for pin-hole marks at side of control surfaces. under
Please look for pin-hole marks at under side of control surfaces.
Main Landing Gear
9
Fuel Tube
Ø6x5mm
PM2x20mm
Copper Tube
d2.5xD3.2x8mm
4
PB2 x14mm Screw
2
PM2 x20mm Screw
M2 Nut
2
≈88mm
TW M P l 8 2 1 0 010
CLEVIS WRENCH
TWM Pl8210010
CLEVIS WRENCH
PB2x14mm
Elevator Pushrod
Ø1.8x730mm
Clevis
Fuel Tube
Ø6x5mm
A249NPO27251110
PM4x38mm
PM4x38mm

P.7
11 Fuel Tank
Engine Mount
10 Inverted Mount
d4.5xD9mm Washer
4
4
d4 5xD9mm.
Washer
Blind nuts are off-centered to keep
the spinner at the fuselage axis.
Engine Mount PL5111050
Fuel Tank
320cc
Balsa 8x12x84.5mm
(For
Position Fixing )
Fuel Tank
Bottom View
Servo Set
12
M4x25mm Socket Head Screw
Balsa 8x12x84.5mm
(For ixing )Fuel Tank Position F
Fuel Tank
320cc
Fuel Tank
320cc
1
1
3x3mm Set Screw
Linkage Connector
M2 Nut
2mm Washer
1
2
Please refer to the attached sheet for linkage connector installation.
3mm
Throttle Servo.
2mm
2mm
Washer
M2 Nut
2mm
Washer
A249NPO27251110

Engine
13
Throttle Pushrod
Ø1.2x480mm
8
M3.5x30mm Screw
M Nut3.5
d xD mm Washer3.5 8
4
8
P.8
Plastic Tube
d2xD3x300mm
14
Install and arrange the servos as
shown in the diagram.
Radio Equipment
Installed Engine Position
(Inverted Mount)
115mm
4.5 in.
M3.5 Nut
d3.5xD8mm
Washer
M x mm3.5 30
M Nut3.5
Washer
d3.5xD8mm
KM 2x8mm
M2 Nut
Elevator Pushrod
Ø1.8x110mm
Front
Bottom View
Straper
Fuel Tube
Ø6x5mm
Copper Tube
Rudder Servo
Elevator Pushrod Elevator Servo
Throttle Pushrod
Sponge
60x70x90mm
Pushrod Connector
Rigging Z Bend
Ø1.8x27mm
Throttle Servo
Copper Tube
Wire
Press down the center
1/3 portion
Battery
Receiver
Elevator Servo
Pushrod
Connector
J2(Pushrod Ø1.8x730)
J1(Pushrod Ø1.8x110) J1
J2
Switch Harness
Charge Receptacles
KP0041300
A249NPO27251110

P.9
Canopy
16
First insert the grommet into the canopy then apply screw.
PWA2.3 x 8mm Screw
4
d1.5 x D6.5 mm
Silicon Grommet
17 Cowling
4
4
d1.5 x D6.5 mm
Silicon Grommet
Spinner
Ø62mm
First insert the grommet into the cowling then apply screw.
15
d4xD15mm Washer
2
2
Main Wing
Bottom View
M4 x35mm
Washer
d4xD15mm
PWA2.6 x 12mm
d1.5 x D6.5 mm
Silicon Grommet
PWA2.3 x 8mm
d1.5 x D6.5 mm
Silicon Grommet
1mm
1mm
Please refer to the attached sheet for usage of the transparent 3D
template.
Propeller
PWA2. x mm 6 12 Screw
M4 x35mm Screw
A249NPO27251110
Double-sided Tape 900mm

P.10
Wing Setting
18
A=A' B=B' C=C'
BB '
CC '
A A'
A249NPO27251110

P.11
Control Throws
Adjust the control throws as shown in the diagram.
These throws are good for general flying. You can
adjust according to your personal preference.
C.G.
Elevator
Rudder
20
Ailerons
10mm
45mm
45mm
18mm
18mm
10mm
C.G.
The ideal C.G. position is 117mm (4.6 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.
117mm
4.6 in
Important Safety Precautions
9
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 4C 0.52 0.70 engine, using
a more powerful engine does not mean better performance. In fact, over powered
engine may cause severe 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.
Aerobatics
50
A249NPO27251110
http://www.theworldmodels.com/para/instruction/instructionManuals.php

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
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.
Air orne Models, 4749-K,Bennett Drive, Livermore, CA 94551 USAB .
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.
A249NPO27251110

12
34
Usage of the transparent 3D template
This transparent 3D template
is used for position guidance
of the actual cutting of the
pre-painted cowling.
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.
A249NPO27251110

Optional Parts
180mm Extension
KW0011800 180mm 1 set
Code No. Size Package
Fuel Filler
PL8110030 15 x 22 x 49mm 1 x 1 pc
Code No. Size Package
Charge Receptacles
KP0041300
Code No. Size Package
Field Stand
MS9111430 600 x 240 x 310mm 1 pc
Code No. Size Package
180mm Y-Cord
KW0021800 180mm 1 pc
Code No. Size Package
Clevis Wrench
PL8210010 1 set
Code No. Size Package
Small Clevis Large Clevis
Special tool for clevis installation.
Suitable for standard and small
(EP) clevis.
Standard Servo
Code No SV4031
0.14 sec / 60° @6.0V
Torque : 3.2kg.cm / 44.8 oz - in @4.8V
4.1kg.cm / 57.4 oz - in @6.0V
Size : 40.6 x 20 x 37mm /
1.60 x 0.79 x 1.46 in
Weight : 39.4 g / 1.39 oz
Speed : 0.17 sec / 60° @4.8V
A249NPO27251110

A249NPO27251110