Seagull Models | DECATHLON ARTF | here - Airtek Hobbies

ASSEMBLY MANUAL
MS:X7
Specifications
Wing Span --------------------------------- 51 in --------------------- 130cm.
Wing Area ---------------------------- 434 sq in ----------------- 28 sq dm.
Weight ---------------------------------- 32-44 oz ------------- 900-1250 g.
Length ---------------------------------------- 39 in ------------------- 100cm.
Radio ------------------------------- 4 channel with 4 sub-micro servos.
Motor size ------------------------------- Himark Outrunner C3522-990.
Need to Complete
Speed Control: 35A to 40A Brushless
Recommended Battery 3-cell 11.1V 2100mAh to 3200mAh Li-Po.
Kit features.
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Ready-made—minimal assembly & finishing required.
Ready-covered covering.
Photo-illustrated step-by-step Assembly Manual.
Made in Vietnam.
DECATHLON.
Instruction Manual.
INTRODUCTION.
Thank you for choosing the DECATHLON ARTF by SEAGULL EP. The DECATHLON was
designed with the intermediate/advanced sport flyer in mind. It is a semi scale airplane which is
easy to fly and quick to assemble. The 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 find
that most of the work has been done for you already.Flying the DECATHLON is simply a joy.
This instruction manual is designed to help you build a great flying aeroplane. Please read this
manual thoroughly before starting assembly of your DECATHLON. Use the parts listing below to
identify 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 & RESPONSIBILITY.
If you are inexperienced with basic R/C flight we strongly recommend you contact your R/C
supplier and join your local R/C Model Flying Club. R/C Model Flying Clubs offer a variety of training
procedures designed to help the new pilot on his way to successful R/C flight. They will also be able
to advise on any insurance and safety regulations that may apply.
ADDITIONAL ITEMS REQUIRED.
Motor: Himark outrunner
C3522-990
Himark outrunner
C3522-990.
Speed control: 35A to 45A.
Speed control:
SJ Conquest 35 or 45 amp.
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Battery: Awesome Power battery
11.1V 2100 mAh - 11.1V 3200 mAh.
Awesome Power battery
11.1V 2100 mAh - 11.1V 3200 mAh.
Radio with four sub-micro servos.
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TOOLS & SUPPLIES NEEDED.
Thick 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.
Thread-lock.
Paper towels.
NOTE: To avoid scratching your new aeroplane we suggest that you cover your
workbench with an old towel. Keep a
couple of jars or bowls handy to hold
the small parts after you open the
bags.
Please trial fit all parts. Make sure you
have the correct parts and that they
fit and are aligned properly before
gluing! This will ensure proper assembly as the DECATHLON is made
from natural materials and minor adjustments may have to be made.
The paint and plastic parts used in
this kit are fuel proof. However, they
are not tolerant of many harsh chemicals including the following: paint
thinner, cyano-acrylate glue accelerator, cyanoacrylate glue de-bonder
and acetone. Do not let these chemicals come in contact with the colours
on the covering and the plastic parts.
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DECATHLON.
Instruction Manual.
HINGING THE AILERONS.
Note: The control surfaces, including the
ailerons, elevators, and rudder, are
prehinged with hinges installed, but the
hinges are not glued in place. It is
imperative that you properly adhere the
hinges in place per the steps that follow
using a high-quality thin C/A glue.
T-pin.
1) Carefully remove the aileron from one
of the wing panels. Note the position of the
hinges.
2) Remove each hinge from the wing panel
and aileron and place a T-pin in the center of
each hinge. Slide each hinge into the wing
panel until the T-pin is snug against the wing
panel. This will help ensure an equal amount
of hinge is on either side of the hinge line when
the aileron is mounted to the aileron.
T-pin.
4)Deflect the aileron and completely
saturate each hinge with thin C/A glue. The
ailerons front surface should lightly contact the
wing during this procedure. Ideally, when the
hinges are glued in place, a 1/64” gap or less
will be maintained throughout the lengh of the
aileron to the wing panel hinge line.
T-pin.
Hinge.
Note: The hinge is constructed of a special
material that allows the C/A to wick or
penetrate and distribute throughout the
hinge, securely bonding it to the wood
structure of the wing panel and aileron.
T-pin.
C/A glue.
Hinge.
3) Slide the wing panel on the aileron until
there is only a slight gap. The hinge is now
centered on the wing panel and aileron.
Remove the T-pins and snug the aileron
against the wing panel. A gap of 1/64” or less
should be maintained between the wing panel
and aileron.
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5) Turn the wing panel over and deflect the
aileron in the opposite direction from the
opposite side. Apply thin C/A glue to each
hinge, making sure that the C/A penetrates into
both the aileron and wing panel.
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HINGING THE RUDDER.
C/A glue.
Glue the rudder hinges in place using the
same tectniques used to hinge the ailerons.
6) Using C/A remover/debonder and a paper
towel, remove any excess C/A glue that may
have accumulated on the wing or in the aileron
hinge area.
7) Repeat this process with the other wing
panel, securely hinging the aileron in place.
8) After both ailerons are securely hinged,
firmly grasp the wing panel and aileron to
make sure the hinges are securely glued and
cannot be pulled out. Do this by carefully
applying medium pressure, trying to separate
the aileron from the wing panel. Use caution
not to crush the wing structure.
WHEEL AND WHEEL PANTS.
1) Assemble and mounting the wheel pants
as shown in the following pictures.
Note: Work the aileron up and down several
times to “work in” the hinges and check
for proper movement.
HINGING THE ELEVATOR.
C/A glue.
Glue the elevator hinges in place using the
same tectniques used to hinge the ailerons.
C/A glue.
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DECATHLON.
Instruction Manual.
A drop of C/A glue on the wheel collar
screws will help keep them from coming lose
during operation.
Repeat the process for the other wheel.
INSTALLING THE MAIN LANDING GEAR.
Using the hardware provided, mount the
main landing gear to the fuselage.
2 X 12mm.
C/A glue.
INSTALLING ELECTRIC MOTOR.
C/A glue.
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Motor.
C/A glue.
Rotor shaft.
Himark Motor.
Park 480:
Motor.
Rotor shaft.
Blind nut.
COWLING INSTALLATION.
6cm.
1) Using a pen to mark the points following the instruction below.
2.2cm.
1.2cm.
2) Slide the fiberglass cowl over the engine and line up the back edge of the cowl with
the marks you made on the fuselage then trim
and cut.
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DECATHLON.
Instruction Manual.
2x8mm.
3) While keeping the back edge of the
cowl flush with the marks, align the front of
the cowl with the crankshaft of the motor. The
front of the cowl should be positioned so the
crankshaft is in nearly the middle of the cowl
opening. Use the spinner backplate as a guide.
Hold the cowl firmly in place using pieces of
masking tape.
4) Slide the cowl back over the motor.
AILERON SERVOS-LINKAGES.
1) Install the rubber grommets and brass
eyelets onto the aileron servo.
2x8mm.
2) Install the metal connector onto servo
arm.
Install the rubber grommets and brass
collets onto the aileron servo. Test fit the
servo into the aileron servo mount.
Because the size of servos differ, you
may need to adjust the size of the precut opening in the mount. The notch in the sides of
the mount allow the servo lead to pass through.
3) Turn the wing panel right side up. Using
a modeling knife, remove the covering at servo
tray.
Using a small weight (Weighted fuel pick-up
works well) and thread, feed the string through
The 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.
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the wing as indicated.
Thread.
Small weight.
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Wing bottom.
Thread.
Small weight.
Wing bottom.
Attach the thread to the servo lead and
carefully thread it though the wing.
Plastic tape.
Electric wire.
Thread.
Attach the micro control connector to the
servo arms. Be sure to use the lock tie but it
could free rotation .
Lock tie.
Aileron control horn slot.
4) Insert aileron control horn to the aileron.
Secure the servos with the screws provided with your radio system.
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DECATHLON.
Instruction Manual.
Dihedral brace.
3) Carefully slide the two wing halves
together and firmly press them together.
Aileron
control horn.
C/A glue.
Aileron pushrod.
Control horn.
Repeat the procedure for orther wing
haft.
WING ASSEMBLY.
1)
brace.
Locate the aluminium wing dihedral
FUSELAGE SERVO INSTALLATION.
1) Locate and cut out the covering film from
the servo holes in both sides of fuselage.
Right side.
Remove
covering.
2) Test fit the dihedral brace into each wing
half.
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Left side.
Remove
covering.
Switch.
Remove
covering.
ASSEMBLY THE TAIL FIN.
2) Install the rubber grommets and brass
collets onto the elevator servo. Test fit the
servo into the elevator servo mount.
Because the size of servos differ, you
may need to adjust the size of the precut opening in the mount. The notch in the sides of the
mount allow the servo lead to pass through.
1) Using a modeling knife, carefully remove
the covering of horizontal stabilizer.
Top side.
3) Secure the servos with the screws provided with your radio system.
Remove covering.
Right side.
Bottom side.
2mm.
Elevator servo.
Left side.
2x12cm.
Rudder servo.
INSTALLING THE SWITCH.
Install the switch into the precut hole in the
side, in the fuselage.
2) Slide the vertical stabilizer back in
place. Using a triangle, check to ensure that
the vertical stabilizer is aligned 90º to the horizontal stabilizer.
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DECATHLON.
Horizontal
Stabilizer.
90º
Instruction Manual.
Vertical
Stabilizer.
2x12cm.
CONTROL HORN INSTALLATION.
2x12mm.
Control horn install as same as method of
aileron wing. See pictures below.
3) Slide the set of vertical and horizontal
tail fin to the fuselage.
C/A glue.
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PUSHROD INSTALLATION.
Pushrod install as same as method of
pushrod wing. See pictures below.
Pushrod.
C/A glue.
SERVO ARM INSTALLATION.
Attach the micro control connector to the
servo arms. Be sure to use the lock tie but it
could free rotation .
Lock tie.
Rudder servo.
Elevator control horn.
Elevator servo.
MOUNTING THE TAIL SKID.
See pictures below:
Rudder control horn.
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DECATHLON.
Instruction Manual.
Receiver.
Expoy glue.
Tie wrap.
ATTACHMENT WING-FUSELAGE.
See pictures below.
INSTALLING THE BATTERY-RECEIVER.
See pictures below.
Tie wrap or rubber band.
Battery tray
Battery.
BALANCING.
Tie wrap.
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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 locate 7cm back from the leading
edge of the wing, measured at wing tip.
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FLIGHT PREPARATION.
A) Check the operation and direction of
the elevator, rudder, ailerons and throttle.
B) Plug in your radio system per the
manufacturer's instructions and turn everything on.
7cm.
CONTROL THROWS.
1) We highly recommend setting up the
DECATHLON using the control throws listed
at right. We have listed control throws for both
Low Rate (initial test flying/sport flying) and
High Rate (aerobatic flying).
2) Turn on the radio system, and with the
trim tabs on the transmitter in neutral, center
the control surfaces by making adjustments
to the clevises or adjustable servo connectors.
The servo arms should be centered also.
3) When the elevator, rudder and aileron
control surfaces are centered, use a ruler and
check the amount of the control throw in each
surface. The control throws should be
measured at the widest point of each surface!
C) Check the elevator first. Pull back on
the elevator stick. The elevator halves should
move up. If it they do not, flip the servo reversing switch on your transmitter to change
the direction.
D) Check the rudder. Looking from behind the airplane, move the rudder stick to the
right. The rudder should move to the right. If it
does not, flip the servo reversing switch on
your transmitter to change the direction.
E) Check the throttle.
F) From behind the airplane, look at the
aileron on the right wing half. Move the aileron
stick to the right. The right aileron should move
up and the other aileron should move down. If
it does not, flip the servo reversing switch on
your transmitter to change the direction.
PREFLIGHT CHECK.
INITIAL FLYING/SPORT FLYING
Ailerons:
Elevator:
Rudder:
3/8” up
3/8 ” up
1/2” right
3/8” down
3/8” down
1/2” left
AEROBATIC FLYING
Ailerons:
Elevator:
Rudder:
1/2” up
5/8” up
1” right
1/2” down
5/8” down
1” left
Do not use the aerobatic settings for
initial test flying or sport flying.
4) By moving the position of the adjustable control horn out from the control surface,
you will decrease the amount of throw of that
control surface. Moving the adjustable control horn toward the control surface will increase the amount of throw.
1) Completely charge your transmitter
and receiver batteries before your first day of
flying.
2) Check every bolt and every glue joint
in the DECATHLON to ensure that everything
is tight and well bonded.
3) Check the control surfaces. All should
move in the correct direction and not bind in
any way.
4) If your radio transmitter is equipped
with dual rate switches double check that they
are on the low rate setting for your first few
flights.
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DECATHLON.
Instruction Manual.
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.
We wish you many safe and enjoyable
flights with your DECATHLON.
INSTRUCTION MANUAL FOR THE CASE BOX ASSEMBLY
(THE CASE BOX DOESN’T INCLUDE).
Radio
equipment.
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