ASSEMBLY MANUAL
Code : SEA 314
Specications:
Wingspan--------------- 122.0 in (310.0 cm).
Wing area--------------- 2487.8 sq.ins (160.5 sq.dm).
Weight------------------- 26.4-27.4 lbs (12.5-13.0kg).
Length------------------- 84.6 in (215.0 cm).
Engine/Motor size----- 60-85cc gasoline.
Radio--------------------- 7 channels with 9 servos.
1
DECATHLON 60-85cc-3D
INTRODUCTION
ank you for choosing the DECATHLON 60-85cc-3D ARTF by SG MODELS . e
DECATHLON 60-85cc-3D was designed with the intermediate/advanced sport y-
er in mind. It is a semi scale airplane which is easy to y and quick to assemble. e airframe is conventionally built using balsa, plywood to make it stronger than the average ARTF, yet the design allows the aeroplane to be kept light. You will nd that
most of the work has been done for you already. e motor mount has been tted and
the hinges are pre-installed. Flying the DECATHLON 60-85cc-3D is simply a joy.
is instruction manual is designed to help you build a great ying aeroplane. Please read
this manual throughly before starting assembly of your DECATHLON 60-85cc-3D Use the
parts listing below to indentify all parts.
WARNING
Please be aware that this aeroplane is not a toy and if assembled or used incorrectly it is capable of causing injury to people or property. WHEN YOU FLY THIS AEROPLANE YOU
ASSUME ALL RISK & REPONSIBILITY.
Instruction Manual.
If you are inexperienced with basic R/C ight we strongly recommend you contact your R/C
supplier and join your local R/C model Flying Club. R/C Model Flying Clubs oer a variety
of training procedures designed to help the new pilot on his way to successful R/C ight.
ey will also be able to advise on any insurance and safety regulations that may apply.
KIT CONTENTS
3
2
2
12
1
8
10
6
4
5
7
11
2
9
KIT CONTENTS
WINGTIP BULBS
SEA314 DECATHLON 60-85cc-3D
1. Fuselage
2. Wing set (2)
3. Tail set (2)
4. Canopy
5. Cowling
6. Wing tube
7. Pilot
8. landing gear
9. Fuel tank
10. Tail wheel
11. Pushrod set
12. Ep Motor box
ADDITIONAL ITEMS REQUIRED
� 60-85cc gasoline engine.
� Computer radio 7 channel with 9
servos.
� Glow plug to suit engine.
� Propeller to suit engine.
� Protective foam rubber for radio
system.
Please see below pictures.
1.
Two white lights for cowling and rudder, the green light for right wing tip, and
the red light for le wing tip. ey are
designed to operate on voltages 12 volts.
Connect four lights into switch circuit so
that optional the dierent ashes mode.
2.
TOOLS & SUPPLIES NEEDED
in cyanoacrylate glue.
Medium cyanoacrylate glue.
30 minute epoxy.
5 minute epoxy.
Hand or electric drill.
Assorted drill bits.
Modelling knife.
Straight edge ruler.
2mm ball driver.
Phillips head screwdriver.
220 grit sandpaper.
90° square or builder’s triangle.
Wire cutters.
Masking tape & T-pins.
read-lock.
Paper towels.
3.
3
DECATHLON 60-85cc-3D
Instruction Manual.
4.
5.
8.
9.
6.
7.
10.
11.
4
12.
16.
13.
14.
17.
18.
15.
19.
5
DECATHLON 60-85cc-3D
Instruction Manual.
20.
21.
24.
INSTALL THE AILERONS
CONTROL HORN
1.
22.
23.
Fiberglass control horn
2.
3.
Ep ox y.
6
4.
Ailerons control horn
INSTALLING THE AILERON SERVOS
Ep ox y.
Place the servo between the mounting
blocks and space it from the hatch. Use
a pencil to mark the mounting hole locations on the blocks.
Use drill bit in a pin vise to drill the mouting holes in the blocks.
3.
40mm
1.
4.
5.
2.
1.5mm
Minimum servo spec.
Tor qu e : 250 oz-in (18 kg-cm) @ 4.8V;
333 oz-in (24 kg-cm) @ 6.0V
Because the size of servos dier, you
may need to adjust the size of the precut
opening in the mount. e notch in the
sides of the mount allow the servo lead to
pass through.
Apply 2-3 drops of thin C/A to each of
the mounting holes. Allow the C/A to
cure without using accelerator.
6.
C/A glue
7
DECATHLON 60-85cc-3D
Instruction Manual.
Use dental oss or heatshrunk tube to
secure the connection so they cannot become unplugged.
7.
Secure the servo to the aileron hatch using Phillips screwdriver and the screws
provided with the servo.
8.
10.
11.
Apply 1-2 drops of thin C/A to each of
the mounting tabs. Allow the C/A to cure
without using accelerator.
9.
C/A glue
12.
13.
Remove the string from the wing at the
servo location and use the tape to attach
it to the servo extension lead. Pull the lead
through the wing and remove the string.
8
Set the aileron hatch in place and use a
Phillips screw driver to install it with four
wood screws.
14.
3x10mm
3.
15.
AILERON PUSHROD INSTALLATION
1.
INSTALLING THE FLAP PUSHROD
1.
130mm.
2.
2.
130mm.
150mm.
150mm.
Attach the ap servo to the ap servo
cover. Center the ap servo (or set the
values to 0 for both up and down) and install the servo arm perpendicular to the
servo centerline. e clevis will attach to
the arm 13/16 inches (21mm) from the
center of the arm.
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DECATHLON 60-85cc-3D
Instruction Manual.
3.
Use a pin vise and 3/32-inch (2mm) drill
bit to clear the paint from the ap control
horn.
4.
6.
Route the servo lead for the ap servo out
at the root of the wing. Connect the ap
servo to the radio system. With the radio
system on, place the ap servo into position.
7.
Attach the ap linkage to the control
horn. Slide the clevis retainer over the
forks of the clevis.
5.
Attach the clevis to the ap servo arm.
Adjust the linkage so the ap is in the
mid-ap position. It may take a few tries
to properly adjust the linkage.
8.
Once adjusted, make sure all clevis retainers are in position. Apply a drop of
threadlock near the clevis, then tighten
the nut against the clevis to keep the linkage from changing length inside the wing.
10
9.
3x10mm
12.
10.
Set the ap control at the transmitter to
the down ap position. Adjust the ap
travel at the transmitter until it matches
the control throws listed in this manual.
11.
13.
Fit the ap linkage cover into position.
Check the operation of the ap to make
sure the cover does not interfere with the
ap linkage.
14.
Trim the ap linkage cover using a hobby
knife and hobby scissors.
Use canopy glue to attach the cover to the
wing. Use low-tack tape to keep the cover
in position until the adhesive fully cures.
11
DECATHLON 60-85cc-3D
Instruction Manual.
15.
INSTALLING LANDING GEAR
Locate items necessary to install Sprin
Landing Gear.
3.
4.
1.
2.
5.
6.
12
7.
11.
9.
8.
12.
13.
Collar.
10.
M3x4mm.
14.
4x25mm.
3x15mm.
13
DECATHLON 60-85cc-3D
15. 19.18.
Instruction Manual.
16.
17.
20.
INSTALLING THE FUSELAGE SERVOS
Because the size of servos dier, you
may need to adjust the size of the precut
opening in the mount. e notch in the
sides of the mount allow the servo lead to
pass through.
.
.
14
18.
Install the rubber grommets and brass
collets into all servos. Test t the servos
into the fuselage servo mounts.
1.
6.2.
3.
4.
7.
8.
5.
9.
Elevator servo.
Rudder servo.
15
DECATHLON 60-85cc-3D
Instruction Manual.
10.
11.
3.
.
Switch.
INSTALLING THE ENGINE SWITCH
Elevator servo arm .
1.
Rudder servo arm.
INSTALLING THE RECEIVER SWITCH
Install the switch into the precut hole in
the side, in the fuselage.
1.
3/32” Hole.
2.
Trim and cut.
2.
Switch.
INSTALLING THE STOPPER
ASSEMBLY
16
Trim and cut.
Using a modeling knife, carefully cut o
the rear portion of one of the 3 nylon
tubes leaving 1/2” protruding from the
rear of the stopper. is will be the fuel
pick up tube.
Using a modeling knife, cut one length of
silicon fuel line. Connect one end of the
line to the weighted fuel pick up and the
other end to the nylon pick up tube.
1.
2.
With the stopper assembly in place, the
weighted pick-up should rest away from the
rear of the tank and move freely inside the
tank. e top of the vent tube should rest just
below the top of the tank. It should not touch
the top of the tank.
When satised with the alignment of the
stopper assembly tighten the 3x20mm machine screw until the rubber stopper expands
and seals the tank opening. Do not overtighten the assembly as this could cause the tank
to split.
FUEL TANK INSTALLATION
1.
3.
Fuel pick up tube.Vent tube.
Fuel lltube.
Carefully bend the second nylon tube up at a
45º angle. is tube is the vent tube.
Test t the stopper assembly into the tank.
It may be necessary to remove some of the
ashing around the tank opening using a
modeling knife. If ashing is present, make
sure none falls into the tank.
You should mark which tube is the vent
and which is the fuel pickup when you attach
fuel tubing to the tubes in the stopper. Once
the tank is installed inside the fuselage, it may
be dicult to determine which is which.
Slide the fuel tank into the fuselage. Guide
the lines from the tank through the hole in
the ewall.
2.
17
DECATHLON 60-85cc-3D
Instruction Manual.
4.
3.
2.
Balsa wood.
Ep ox y.
3.
Vent tube.
Fuel pick up tube.
Fuel ll tube.
Connect the lines from the tank to the engine and muer. e vent line will connect to the muer and the line from the
clunk tothe carburetor.
Blow through one of the lines to ensure
the fuel lines have not become kinked inside
the fuel tank compartment. Air should ow
through easily.
MOUNTING THE ENGINE
Please see below pictures.
1.
4.
5.
18
6.
10.
8.
7.
11.
12.
9.
180mm
13.
6x90mm
19
DECATHLON 60-85cc-3D
Instruction Manual.
14.
15.
18.
19.
16. 20.
Ignition Modude.
17.
THROTTLE SERVO ARM
INSTALLATION
Install adjustable servo connector in the
servo arm as same as picture below:
20
1.
2.
2.
Reinstall the servo horn by sliding the
connector over the pushrod wire. Center
the throttle stick and trim and install the
servo horn perpendicular to the servo
center line.
Move the throttle stick to the closed position and move the carburetor to closed.
Use a 2.5mm hex wrench to tighten the
screw that secures the throttle pushrod
wire. Make sure to use threadlock on the
screw so it does not vibrate loose.
3.
1.
COWLING
Please see below pictures.
1.
21
DECATHLON 60-85cc-3D
Instruction Manual.
2.
3.
6.
7.
4.
5.
8.
9.
22
10.
11.
14.
Use a drill and drill bit to drill the holes
for the cowl mounting screws. Make sure
the cowl position is correct before drilling each hole.
15.
12.
Tape the cowl to the fuselage using lowtack tape.
13.
Install the muer and muer extension
onto the engine and make the cutout in
the cowl for muer clearance. Connect
the fuel and pressure lines to the carburetor, muer and fuel ler valve. Secure
the cowl to fuselage using the M4x25mm
socket head screws.Putting a small length
of silicon fuel tube under the head of the
screw helps with vibration.
16.
23
DECATHLON 60-85cc-3D
Instruction Manual.
17.
18.
21.
Nylon screw 4x25mm.
22.
19.
20.
ELECTRIC POWER CONVERSION
Locate the items neccessary to install the
electric power conversion included with
your model.
1.
Recommend the items necessary to install
the electric power conversion parts
included with your model.
24
- Motor: 80cc - 195 KV
- Propeller: 27 x 10
- ESC: 200A
- 12S- 14S Lipo
2.
3.
18mm.
6.
7.
4.
5.
8.
9.
25
DECATHLON 60-85cc-3D
Instruction Manual.
10.
11.
14.
Attach the electric motor box to the rewall centered with the cross lines drawn
on the electric motor box and rewall.
Using M6x25mm to secure the motor box
to the rewall. Please see pictures below.
15.
12.
13.
16.
6x35mm.
Attach the motor to the front of the electric motor box using four 4mm blind nut,
four M6x35mm hex head bolts to secure
the motor. Please see picture shown.
26
17.
18.
21.
Blind nut.
6mm.
Attach the motor mount to the front of the
electric motor box using four 4mm blind
nut, four M6x25mm hex head bolts to secure the motor. Please see picture shown.
19.
en, use 8mm drill bit to enlarge the
holes on the electric motor box.
20.
22.
6x25mm.
23.
8mm.
180mm
27
DECATHLON 60-85cc-3D
Instruction Manual.
24.
25.
6x25mm
Ep ox y.
Balsa stick.
27.
28.
Speed control.
Attach the speed control to the side of
the motor box using two-sided tape
and tie wraps. Connect the appropriate
leads from the speed control to the motor. Make sure the leads will not interfere
with the operation of the motor.
26.
29.
30.
28
31.
32.
INSTALLING THE SPINNER
Install the spinner backplate, propeller
and spinner cone.
Batter y.
1.
e propeller should not touch any
part of the spinner cone. If it does, use a
sharp modeling knife and carefully trim
away the spinner cone where the propeller comes in contact with it.
33.
34.
2.
INSTALL NAIL HINGE ELEVATOR
Test t the hinges into the elevator, and
then the hinges into the tail. Ensure that
the hinge pockets line up, and that the
hinges move freely.
29
DECATHLON 60-85cc-3D
Instruction Manual.
1.
2.
Ep ox y.
Install the elevator control horn using
the same method as same as the elevator
control horns.
1.
2.
3.
4.
3.
4.
INSTALL ELEVATOR CONTROL HORN
30
INSTALL NAIL HINGE RUDDER
Test t the hinges into the rudder, and
then the hinges into the tail. Ensure that
the hinge pockets line up, and that the
hinges move freely.
1.
4.
2.
Ep ox y.
Plug in the power cord
5.
6.
3.
7.
31
DECATHLON 60-85cc-3D
Instruction Manual.
8.
9.
12.
Ep ox y.
13.
10.
11.
INSTALL RUDDER CONTROL HORN
Install the elevator control horn using
the same method as same as the aileron
control horns.
1.
2.
32
20mm
3.
4.
7.
8.
5.
6.
INSTALLING WING TUBE VERTICAL
STABILIZE
Parts requirement.See pictures below.
1.
2.
Ep ox y.
33
DECATHLON 60-85cc-3D
Instruction Manual.
3.3512.
4.
5.
8.
9.
6.
7.
10.
11.
3x20mm.
34
4.
3.
13.
1.
3x20mm.
INSTALLING HORIZONTAL
STABLLIZER
5.
6.
Horizontal
Stabilizer.
4.
Vertical
Stabilizer.
2.
7.
4x12mm.
DECATHLON 60-85cc-3D
Instruction Manual.
8.
9.
2.
4x12mm.
4x12mm.
Elevator control horn.
3.
135mm.
ELEVATOR PUSHROD HORN
INSTALLATION
Install the elevator control horn using the
same method as with the aileron control
horns.
Position the elevator control horn on the
both side of elevator.
1.
4.
155mm.
155mm.
5.
36
Elevator control horn.
RUDDER PUSHROD INSTALLATION
Repeat steps as same as steps done for elevator.
1.
2.
3.
100mm.
120mm.
Elevator pushrod.
4.
Rudder.
MOUNTING THE TAIL WHEEL
Locate items necessary to install tail wheel.
1.
5.
6.
2.
37
DECATHLON 60-85cc-3D
Instruction Manual.
7.
8.
11.
12.
9.
10.
13.
14.
38
15.
19.
16.
17.
20.
21.
18.
22.
3x20mm.
39
DECATHLON 60-85cc-3D
Instruction Manual.
23.
24.
27.
3x20mm.
28.
25.
26.
29.
30.
3x6mm.
40
3x20mm.
31.
35.
32.
33.
36.
37.
3x6mm.
34.
38.
41
DECATHLON 60-85cc-3D
Instruction Manual.
39.
40.
43.
44.
41.
42.
45.
3x6mm.
46.
42
47.
51.
48.
49.
52.
3x6mm.
INSTALLING THE WING STRUT
Parts requirement.See pictures below.
1.
50.
43
DECATHLON 60-85cc-3D
Instruction Manual.
2.
3.
6.
7.
4.
5.
8.
9.
44
10.
14.
11.
12.
15.
16.
13.
17.
45
DECATHLON 60-85cc-3D
Instruction Manual.
18.
19.
22.
23.
20.
21.
24.
25.
46
26.
30.
27.
28.
31.
32.
29.
33.
47
DECATHLON 60-85cc-3D
Instruction Manual.
34.
35.
38.
39.
36.
37.
40.
41.
48
42.
43.
46.
INSTALL THE WINDOW
Parts requirement.See pictures below.
1.
44.
45.
2.
49
DECATHLON 60-85cc-3D
Instruction Manual.
3.
4.
7.
8.
5.
6.
9.
Ep ox y.
10.
Ep ox y.
50
11.
15.
12.
13.
16.
17.
14.
18.
51
DECATHLON 60-85cc-3D
Instruction Manual.
19.
20.
23.
24.
21.
22.
25.
INSTALLATION PILOT AND CANOPY
Locate items necessary to install pilot and
canopy.
52
1.
3.
A scale pilot is included with this ARF. e
Pilot included tting well to the cockpit.
(or you can order others scale pilot gures
made by SG Models. ey are available at
SG Models distributors.)
If you are going to install a pilot gure,
please use a sanding bar to sand the base
of the gure so that it is at.
Position the pilot gure on the canopy
oor as show. Locate the oval shaped on
the canopy oor and remove the covering. Use epoxy to glue this into the base of
the pilot gure and glue the cockpit panel
in place with C/A glue, please see pictures
as shown.
4.
Ep ox y.
5.
2.
6.
53
DECATHLON 60-85cc-3D
Instruction Manual.
7.
8.
11.
12.
9.
10.
Ep ox y.
13.
14.
54
Ep ox y.
15.
Epoxy canopy onto the fuselage. Trace
around the canopy and onto the fuselage
using a epoxy.
16.
19.
ATTCHMENT WING-FUSELAGE
Attach the aluminiu, thube into fuselage.
1.
17.
18.
2.
Ep ox y.
55
DECATHLON 60-85cc-3D
Instruction Manual.
3.
4.
7.
8.
5.
6.
9.
10.
56
11.
15.
12.
13.
INSTALLING TOW RELEASE FOR
SAIL PLANE.
Screw the aero-tow mechanism into the hole
just behind the canopy, and apply threadlock id to prevent the coupling and nut
from working loose.
e aluminium part must be shortened
enough so that the clevis can move freely,
adjust the rods accordingly
1.
14.
2.
57
DECATHLON 60-85cc-3D
Instruction Manual.
3.
It is best to operate the aero-tow release
mechanism using a momentary switch
mounted on the joystick. servo travel
must be set accordingly.
4.
1.
2.
5.
3.
4.
INSTALLING NEEDED ANTEN
Parts requirement.See pictures below.
58
APPLY THE DECALS
If all the decals are precut and ready to
stick. Please be certain the model is clean
and free from oily ngerprints and dust.
Position decal on the model where desired, using the photos on the box and aid
in their location.
If all the decals are not precut, please use
scissors or a sharp hobby knife to cut the
decals from the sheet. Please be certain
the model is clean and free from oily ngerprints and dust. Position decal on the
model where desired, using the photos on
the box and aid in their location.
BALANCING
*If possible, rst attempt to balance the
model by changing the position of the
receiver battery and receiver. If you are
unable to obtain good balance by doing
so, then it will be necessary to add weight
to the nose or tail to achieve the
proper balance point.
With the wings attached to the fuselage,
all parts of the model installed ( ready to
y), and empty fuel tanks, hold the model at the marked balance point with the
stabilizer level.
Li the model. If the tail drops when you
li, the model is “tail heavy” and you
must add weight* to the nose. If the nose
drops, it is “nose heavy” and you must
add weight* to the tail to balance.
It is critical that your airplane be
balanced correctly. Improper balance will
cause your plane to lose control and
crash. THE CENTER OF GRAVITY IS LOCATED 170MM BACK
FROM THE LEADING EDGE OF
THE WING AT THE WING ROOT.
Mount the wing to the fuselage. Place a
piece of masking tape on the top of each
wing 170mm back from the leading edge
at the wing root.
With the model inverted, place your ngers on the masking tape and carefully
li the plane. is is the point at which
your model should balance for your rst
ights. Later, you may wish to experiment
by shiing the balance up to 10mm
forward or back to change the ying characteristics. Moving the balance forward
may improve the smoothness and arrow- like tracking, but it may then require
more speed for take o and make it
more dicult to slow down for landing.
Moving the balance a makes the model
more agile with a lighter and snappier
”feel”. In any case, please start at the location we recommend.
1.
CONTROL THROWS
Ailerons:
High Rate :
Up : 40 mm
Down : 40 mm
Low Rate :
Up : 70 mm
Down : 70 mm
Elevator:
High Rate :
Up : 60 mm
Down : 60 mm
Low Rate :
Up : 100 mm
Down : 100 mm
170mm.
Rudder:
High Rate :
Right : 50 mm
Le : 50 mm
Low Rate :
Right : 70 mm
Le : 70 mm
Flap:
Mid : 40mm
Full : 140 mm
59
DECATHLON 60-85cc-3D
Instruction Manual.
Fuselage
Wing
60-100mm
60-100mm
50-70mm
50-70mm
40-70mm
40-70mm
40mm
140mm
60
FLIGHT PREPARATION PREFLIGHT CHECK
Check the operation and direction of the
elevator, rudder, ailerons and throttle.
A) Plug in your radio system per the
manufacturer’s instructions and turn everything on.
B) Check the elevator rst. Pull back
on the elevator stick. e elevator halves
should move up. If it they do not, ip the
servo reversing switch on your transmitter to change the direction.
C) Check the rudder. Looking from behind the airplane, move the rudder stick
to the right. e rudder should move
to the right. If it does not, ip the servo
reversing switch on your transmitter to
change the direction
.
1) Completely charge your transmitter and receiver batteries before your rst
day of ying.
2) Check every bolt and every glue
joint in the DECATHLON 60-85cc-3D
to ensure that everything is tight and well
bonded.
3) Double check the balance of the airplane. Do this with the fuel tank empty.
4) Check the control surfaces. All
should move in the correct direction and
not bind in any way.
5) If your radio transmitter is equipped
with dual rate switches double check that
they are on the low rate setting for your
rst few ights.
D) Check the throttle. Moving the
throttle stick forward should open the
carburetor barrel. If it does not, ip the
servo reversing switch on your transmitter to change the direction.
E) From behind the airplane, look at the
aileron on the right wing half. Move the
aileron stick to the right. e right aileron should move up and the other aileron
should move down. If it does not, ip the
servo reversing switch on your transmitter to change the direction.
We wish you many safe and enjoyable ights
with your DECATHLON 60-85cc-3D .
6) Check to ensure the control surfaces are moving the proper amount
for both low and high rate settings.
7) Check the receiver antenna. It should
be fully extended and not coiled up inside the fuselage.
8) Properly balance the propeller. An
out of balance propeller will cause excessive vibration which could lead to engine
and/or airframe failure.
61
DECATHLON 60-85cc-3D
If you have any queries, or are interested in our products,
Instruction Manual.
please feel free to contact us
Factory : 12/101A - Hamlet 4 - Le Van Khuong Street - Dong anh Ward -
Hoc Mon District - Ho Chi Minh City - Viet Nam.
Oce : 62/8 Ngo Tat To Street - Ward 19 - Binh anh District - Ho Chi Minh
City - Viet Nam
Phone : 848 - 86622289 or 848- 36018777
Website : www.SeagullModels.com
Email : Sales@seagullmodels.com
Facebook : www.facebook.com/SeaGullModels.
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