Seagull Models TEMPEST DRAGON 15cc ARF User manual

1
ASSEMBLY MANUAL
Code : SEA 313
Specications:
Wingspan------------------- 206 cm------------------- 81 inches.
Length----------------------- 146 cm------------------- 57.5 inches.
Wing area------------------- 62.7sq.dm--------------- 971.2 sq.in.
Weight----------------------- 4.5 kg-------------------- 9.9 lbs.
Engine----------------------- 15cc.
Motor------------------------ Motor 90 / 85A / 6S-8S / 1800watt.
Radio------------------------ 6 channels 7 servos.

TEMPEST DRAGON 15cc ARF Instruction Manual.
2
ank you for choosing the TEMPEST DRAGON 15cc ARF ARTF by SG MODELS
. e TEMPEST DRAGON 15cc ARF was designed with the intermediate/advanced
sport yer in mind. It is a semi scale airplane which is easy to y and quick to assem-
ble. 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 TEMPEST DRAGON 15cc ARF 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 TEMPEST DRAGON 15cc ARF
Use the parts listing below to indentify all parts.
Please be aware that this aeroplane is not a toy and if assembled or used incorrectly it is ca-
pable of causing injury to people or property. WHEN YOU FLY THIS AEROPLANE YOU
ASSUME ALL RISK & REPONSIBILITY.
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 oer 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.
INTRODUCTION
WARNING
KIT CONTENTS
1
22
33
4
5
6
9
10
11
13
7
12
8

3
ADDITIONAL ITEMS REQUIRED
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.
�15cc gasoline engine.
�Computer radio 6 channel with 7
servos.
�Glow plug to suit engine.
�Propeller to suit engine.
�Protective foam rubber for radio
system.
KIT CONTENTS
SEA313 TEMPEST DRAGON 15cc ARF
1. Fuselage
2. Wing set (2)
3. Tail set (2)
4. Canopy
5. Cowling
6. Wing tube
7. Landing gear
8. Nose Landing gear
9. Fuel tank
10. Pushrod set
11. Ep Motor box
12. Pilot
13. Spinner
HINGING THE FLAP
Note : e control surfaces, including the ailer-
ons, 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 us-
ing a high-quality thin C/A glue.
Carefully remove the aileron from one of
the wing panels. Note the position of the
hinges.
1.
C/A Hinge
Slide the wing panel on the ap until
there is only a slight gap. e hinge is now
centered on the wing panel and ap. Re-
move the Tpins and snug the ap against
the wing panel. A gap of 1/64” or less
should be maintained between the wing
panel and ap.
2.
- Remove each hinge from the wing panel
and ap and place a T-pin in the center of
each hinge. Slide each hinge into the aileron
until the T-pin is snug against the aileron.
is will help ensure an equal amount of
hinge is on either side of the hinge line when
the ap is mounted to the wing panel.
Hinge
T-pin

TEMPEST DRAGON 15cc ARF Instruction Manual.
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5.
3.
4.
NOTE : e hinge is constructed of a spe-
cial 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 ap.
Deect the ap and completely saturate
each hinge with thin C/A glue. e ap front
surface should lightly contact the wing dur-
ing this procedure. Ideally, when the hinges
are glued in place, a 1/64” gap or less will be
maintained throughout the lengh of the ap
to the wing panel hinge line.
Turn the wing panel over and deect the
ap in the opposite direction from the oppo-
site side. Apply thin C/A glue to each hinge,
making sure that the C/A penetrates into
both the ap and wing panel.
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 ap
hinge area.
Repeat this process with the other wing
panel, securely hinging the ap in place.
Aer both ap are securely hinged, rmly
grasp the wing panel and ap to make sure
the hinges are securely glued and cannot
be pulled out. Do this by carefully applying
medium pressure, trying to separate theM
ap from the wing panel. Use caution not to
crush the wing structure.
Work the aileron up and down sev-
eral times to “work in” the hinges
and check for proper movement.
Note :
CA glue
Hinge
HINGING THE AILERON
Note : e control surfaces, including the ailer-
ons, 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 us-
ing a high-quality thin C/A glue.
Carefully remove the aileron from one of
the wing panels. Note the position of the
hinges.
1.
C/A Hinge

5
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. is will help ensure an equal amount
of hinge is on either side of the hinge line
when the aileron is mounted to the aileron.
Slide the wing panel on the aileron until
there is only a slight gap. e 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.
2.
3.
4.
5.
NOTE : e hinge is constructed of a spe-
cial 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.
Deect the aileron and completely saturate
each hinge with thin C/A glue. e 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.
CA glue
Hinge
Hinge
T-pin
6.
Turn the wing panel over and deect 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.
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.
Repeat this process with the other wing
panel, securely hinging the aileron in place.

TEMPEST DRAGON 15cc ARF Instruction Manual.
6
Locate the aileron control horns. e taller
control horn is used for the ailerons, and the
shorter horn for the aps.
Use sandpaper to scu the bottom of the
aileron and ap control horns. Use a paper
towel and isopropyl alcohol to remove any
oils or debris from the control horns.
Check the t of the control horns to
the aileron and ap. ey should rest ush
against the control surface as shown.
INSTALL THE AILERONS
CONTROL HORN
1.
2.
3.
Ailerons control horn
Place low-tack tape 1/32 inch (1mm)
from the control horn slot. is will pre-
vent epoxy from getting on the control
surface when the control horns are glued
in place.
Remove the control horns from the
control surfaces. Apply epoxy to the slot
in the aileron and ap. Make sure the
epoxy gets into the slot for a good bond
between the surfaces and control horn.
4.
7.
Aer both ailerons are securely hinged,
rmly grasp the wing panel and aileron to
make sure the hinges are securely glued and
cannot be pulled out. Do this by carefully ap-
plying medium pressure, trying to separate
the aileron from the wing panel. Use caution
not to crush the wing structure.
Work the aileron up and down sev-
eral times to “work in” the hinges
and check for proper movement.
Note :

7
Apply epoxy to the area of the control
horns that st into the slots. Use enough
epoxy so the control horns will be fully
bonded to the ed surfaces.
5.
Epoxy
6.
Epoxy
Before the epoxy fully cures, remove
the tape from around the control horn.
is will allow the epoxy to ow around
the control horn, creating a small let
between the control horn and surface for
a ished look and secure bond.
INSTALLING THE AILERON SERVOS
7.
1.
2.
Mininum servo spec.
Torque : 54 oz-in (3.9 kg-cm) @ 4.8V;
67 oz-in (4.8 kg-cm) @ 6.0V
Because the size of servos dier, 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.
Install the rubber grommets and brass
collets onto the aileron servo. Test t the
servo into the aileron servo mount.
Use dental oss to secure the connec-
tion so they cannot become unplugged.
3.

TEMPEST DRAGON 15cc ARF Instruction Manual.
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Using a small weight (Weighted fuel
pickup works well) and thread, feed the
string through the wing as indicated.
5.
Attach servo lead to the aileron servo.
Attach the string to the servo lead and
carefully thread it though the wing. Once
you have thread the lead throught the
wing, remove the string so it can use for
the other servo lead.
4.
Tape the servo lead to the wing to pre-
vent it from falling back into the wing.
Reinstall the servo into the servo mount
and secure the servo inplace using the
wood screws provided with you radio
system.
Repeat the procedure for the other wing
half.
6.
7.
8.
9.
10.

9
Use a felt tip pen to mark the wire where
it crosses the hole. Use a pair of pliers to
put a shrp 90-degree bend in the wire at
the mark.
AILERON PUSHROD INSTALLATION
Please study images below.
1.
2.
3.
Make a 90-degree bend at the mark and
cut o the excess wire leaving 8mm past
the bend.
4.
5.
6.
7.
Connect the linkage as shown and secure
the control wire with a snap keeper.
INSTALLING THE MAIN
LANDING GEAR
NOTE : You must now decide if you will
assemble the Classic Ugly Stick with tri-
cycle landing gear or as a tail dragger. If
youare assembling as a tail dragger, please
skip the nose gear installation steps and
mount the main gear to the FORWARD
mounting location. If you are assembling
using the tricycle landing gear, please
skip the tail wheel installation steps, In-
stall the nose gear, and mount the main
gear to the REAR mounting location.

TEMPEST DRAGON 15cc ARF Instruction Manual.
10
.
e blind nuts for securing the landing
gear are already mounted inside the wing
set.
Using the hardware provided, mount
the main landing gear to the wing set.
Place the wing set inverted on the work
bench in a suitable stand. Set the landing
gear in place and use a screwdrive to se-
cure the landing gear to the wing set us-
ing bolts M4x20mm and washers. Make
sure to use the threadlock on the bolts so
they don’t vibrate loose.
1.
4.
2.
5.
3.
6.
7.
M3x4mm
Collar

11
8. 12.
9. 13.
10. 14.
11. 15.

TEMPEST DRAGON 15cc ARF Instruction Manual.
12
NOSE GEAR INSTALLATION
Please see Images below:
16.
17.
1.
18.
2.
3.
4.
19.
M4x15mm
M3x4mm

13
5. 9.
6. 10.
7. 11.
8. 12.

TEMPEST DRAGON 15cc ARF Instruction Manual.
14
.
INSTALLING THE FUSELAGE SERVOS
.
Because the size of servos dier, 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.
Install the rubber grommets and brass
collets into all servos. Test t the servos
into the fuselage servo mounts.
Secure the servos with the screws
provided with your radio system.
1.
2.
Rudder servo
rottle servo
Rudder servo arm
Mininum servo spec.
Torque : 54 oz-in (3.9 kg-cm) @ 4.8V;
67 oz-in (4.8 kg-cm) @ 6.0V
rottle servo armElevator servo arm
Elevator servo
13.
14.
15.
16.

15
1.
INSTALLING THE RECEIVER SWITCH
Install the switch into the precut hole in
the side, in the fuselage.
3/32” Hole.
3.
1.
2.
.
INSTALLING THE ENGINE SWITCH
Switch
Trim and cut
Trim and cut
2.
Switch
1.
2.
INSTALLING THE STOPPER
ASSEMBLY
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.

TEMPEST DRAGON 15cc ARF Instruction Manual.
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3.
Fuel pick up tube
Vent tube
Fuel ll tube
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.
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 satised with the alignment of the
stopper assembly tighten the 3 x 20mm ma-
chine screw until the rubber stopper expands
and seals the tank opening. Do not over-
tighten the assembly as this could cause the
tank to split.
FUEL TANK INSTALLATION
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 dicult to determine which is which.
1.
3.
4.
2.
Slide the fuel tank into the fuselage. Guide
the lines from the tank through the hole in
the ewall.
Use plywood template to hold in place the
fuel tank with C/A glue to secure the fuel-
tank inside the fuselage.
CA glue

17
5.
Fuel pick up tube Fuel ll tube
Vent tube
Connect the lines from the tank to the
engine and muer. e vent line will
connect to the muer 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
Locate the items necessary to install the
engine mount included with your model.
1.
4x25mm
Use four 4x25mm head bolts and four
4mm washers to attach the engine mount
rails to the rewall. Tighten the screws
.Make sure to use threadlock on the
screws to help prevent them from vibrat-
ing loose.
Position the engine with the drive wash-
er (135mm) forward of the rewall as
shown.
2.
4.
3.
Use a pin drill and 4mm drill bit to drill
a small indentation in the mount for the
engine mounting screw.
Use a drill to drill the four holes in the
engine mount rails.
4mm
135mm

TEMPEST DRAGON 15cc ARF Instruction Manual.
18
5.
4mm
On the e wall has the location for the
throttle pusshrod tube (pre-drill).
6.
Slide the pushrod tube in the ewall and
guide it through the fuel tank mount. Use
medium C/A to glue the tube to the e-
wall and the fuel tank mount.
Connect the Z-bend in the 450mm
throttle pushrod to the outer hole of the
carburetor arm.
Slide the throttle pushrod wire into the
tube. Position the engine between the
mounts. Use four M4x30mm machine
screws to secure the engine to the mount
as shown.
7.
Pushrod wire
M4x30mm
8.
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.
9.
Move the throttle stick to the closed po-
sition 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.
M4 lock Nut

19
10.
11.
1.
INSTALLING THE SPINNER
Install the spinner backplate, propeller
and spinner cone.
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 propel-
ler comes in contact with it.
Locate the items neccessary to install
the electric power conversion included
with your model.
ELECTRIC POWER CONVERSION
Attach the electric motor box to the re-
wall suitable with the cross lines drawn on
the electric motor box and rewall. Using
M4x20mm to secure the motor box to the
rewall. Please see pictures below.
Model size: .46-.52 size models
- Motor: 35mm 830 rev per volt
- Propeller: 12x6 ~ 13x6
- ESC: 60A
- Lipo Batteries: 4 cell 4200mA
1.
2.

TEMPEST DRAGON 15cc ARF Instruction Manual.
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3.
M4x20mm
4.
5.
6.
Attach the motor to the front of the
electric motor box using four 4mm blind
nut, four M4x16mm hex head bolts to se-
cure the motor. Please see picture shown.
Locate the plywood battery tray to the
fuselage. Tighten the screws using ma-
chine screws M4x16mm to secure the
tray in position.
9.
7.
8.
M4x16mm
Nut M4