Seagull Models Sparrow Hawk SEA-93 User manual

MadeinVietnam.
ASSEMBLY MANUAL
MS: SEA 93
“Graphics and specfications may change without notice”.
Kit features.
• Ready-made—minimalassembly&finishingrequired.
• Ready-coveredcovering.
• Photo-illustratedstep-by-stepAssemblyManual.
Specifications
Wingspan-----------------------------------63in----------------------------------160cm.
Wing area------------------------------------746.6 sq.in ------------------- 48.2 sq.dm.
Approximate flying weight--------------7.9-8.8 lbs --------------------------3.6-4kg.
Length---------------------------------------54.7in--------------------------------139cm.
Recommended engine size----------.0.61 -0.75 cu.in -------------------2-stroke.
1.00-1.10 cu.in ----------------- 4-stroke.
ELECTRIC CONVERSION : OPTIONAL.
Radio System required 4 channels with 6 servos.
Flying skill level Intermediate/advanced.
SPARROW HAWK

SPARROW HAWK Instruction Manual
2
INTRODUCTION.
ThankyouforchoosingtheSPARROWHAWK ARTFbySEAGULLMODELS.TheSPARROW
HAWK wasdesignedwiththeintermediate/advancedsportflyerinmind.Itisa scale airplane which
iseasytoflyandquicktoassemble.Theairframeisconventionallybuiltusingbalsa,plywoodtomake
itstrongerthantheaverageARTF,yetthedesignallowstheaeroplanetobekeptlight.Youwillfind
thatmostoftheworkhasbeendoneforyoualready. Themotormounthasbeenfittedandthehinges
are pre-installed . Flying the SPARROW HAWK is simply a joy.
This instruction manual is designed to help you build a great flying aeroplane. Please read this
manualthoroughlybeforestartingassemblyofyourSPARROWHAWK.Usethepartslistingbelow
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
supplierandjoinyourlocalR/CModelFlyingClub.R/CModelFlyingClubsofferavarietyoftraining
proceduresdesignedtohelpthe new pilot on his way tosuccessfulR/Cflight.Theywillalsobeable
to advise on any insurance and safety regulations that may apply.
ADDITIONAL ITEMS REQUIRED.
0.61 - 0.75 cu.in 2-stroke
1.00 - 1.10 cu.in 4-stroke engine
Radio System required 4 channels
with 6 servos.
Propeller to suit engine
Protective foam rubber for radio
system
Silicone fuel line
TOOLS & SUPPLIES NEEDED.
Thick cyanoacrylate glue
30 minute epoxy
5 minute epoxy
Hand or electric drill
Assorted drill bits
Modellingknife
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
PARTS LISTING.
FUSELAGE ASSEMBLY
(1) Fuselage
(1) Canopy hatch
WING ASSEMBLY
(1) Right wing half/ aileron
(1) Left wing half with/ aileron
(1) Aluminium dihedral brace
Tail section assembly
(1) Horizontal stabilizer/ elevator
halves.
(1) Rudder halves.
Some more parts.
HARDWAREPACK
COWLING
Landinggear.....

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NOTE: To avoid scratching your new aero-
planewesuggestthatyoucoveryour
workbench with an old towel. Keep a
couple of jars or bowls handy to hold
the small parts after you open the
bags.
Pleasetrialfitallparts.Makesureyou
have the correct parts and that they
fit and are aligned properly before
gluing! This will ensure proper as-
semblyasthe SPARROWHAWK is
made from natural materials and
minor adjustments may have to be
made. Thepaint and plasticparts
used in this kit are fuel proof. How-
ever, they are not tolerant of many
harshchemicalsincludingthefollow-
ing:paintthinner,cyano-acrylateglue
accelerator, cyanoacrylate glue de-
bonderandacetone.Donotletthese
chemicals come in contact with the
coloursonthecoveringandtheplas-
tic parts.
1) Carefully remove the aileron from one
of the wing panels. Note the position of the
hinges.
2)Removeeachhinge from the wingpanel
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
ofhingeisoneither side of thehingelinewhen
the aileron is mounted to the aileron.
HINGING THE AILERONS.
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
shouldbe maintained betweenthe wing panel
andaileron.
The control surfaces, including the
ailerons, elevators, and rudder, are
prehinged with hinges installed, but the
hinges are not glued in place. It is
imperativethat you properly adhere the
hingesin place per the stepsthat follow
using a high-quality thin C/A glue.
Note:
4)Deflect the aileron and completely
saturate each hinge with thin C/A glue. The
aileronsfrontsurfaceshouldlightly 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.
Note: The hinge is constructed of a special
material that allows the C/A to wick or
penetrateanddistributethroughout the
hinge, securely bonding it to the wood
structureof the wingpanel and aileron.
Hinge
T-pins.
C/Aglue.
T-pins
Hinge.
Hinge.

SPARROW HAWK Instruction Manual
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HINGING THE ELEVATOR.
8)Afterbothailerons 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.
7) Repeat this process with the other wing
panel, securely hinging the aileron in place.
5)Turn the wingpanelover and deflect the
aileron in the opposite direction from the
opposite side. Apply thin C/A glue to each
hinge,makingsure that theC/Apenetratesinto
both the aileron and wing panel.
6) Using C/A remover/debonder and a
papertowel,remove any excessC/A glue that
may have accumulated on the wing or in the
aileronhinge area.
HINGING THE RUDDER.
Glue the elevator hinges in place using the
same techniques used to hinge the ailerons.
Glue the rudder hinges in place using the
same techniques used to hinge the ailerons.
Work the aileron up and down several
times to “work in” the hinges and check
for proper movement.
Note:
Hinge.
Aileron control horn installation: See pictures
below.
AILERON CONTROLHORN
M3LOCK
NUT.
ALUMINUMWASHER.
ALUMINUMWASHER.
CONTRONLHORN
M3 SCREW.
18mm.
Epoxy.
Wing
Epoxy.
Wing
2 sets.
3x35mm.

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ELEVATOR CONTROL HORN.
Install the elevator control horn using the
same method as with the aileron control
horns.
2 sets.
3x35mm.
16mm.
Epoxy.
Horizontal
Stabilizer.
Elevator control horn.
Wing
bottom.
Rudder control horn:
Using the same techniques used aileron
control horn. See picture below.
18mm.
EPOXY.
RUDDER CONTROL HORN.
Fuselage. Rudder.
Aileroncontrol horn.
2 sets.
3x40mm.
AluminumWasher.
M3LOCKNUT.
Epoxy.
AluminumWasher.
AluminumWasher.
CONTRONL HORN M3
M3LOCK NUT.
Epoxy.
AluminumWasher.
Fuselage. Rudder.
CONTRONL HORN M3
Horizontal
Stabilizer.
Aileron.

SPARROW HAWK Instruction Manual
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ENGINE MOUNT INSTALLATION.
Mark and drill 4 holes for engine mount.
Insert 4 blind nuts to firewall.
4x30mm.
see pictures below.Make yourself the
template of your engine on paper.
Ruddercontrolhorn.
1) Using a modeling knife, carefully cut
off the rear portion of one of the 3 nylon tubes
leaving 1/2” protruding from the rear of the
stopper. This will be the fuel pick up tube.
INSTALLING THE STOPPER ASSEMBLY.
3) Carefully bend the second nylon tube
up at a 45º angle. This tube is the vent tube.
2) Usinga modeling knife,cut onelength
ofsiliconfuel line. Connect oneend of the line
tothe weighted fuelpick up andthe other end
to the nylon pick up tube.
Thread locker glue.

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4) Test fit the stopper assembly into the
tank. It may be necessary to remove some of
the flashing around the tank opening using a
modeling knife. If flashing is present, make
sure none falls into the tank.
Venttube. Fuel pick up tube.
Fuel fill tube.
5) With the stopper assembly in place,
the weighted pick-up should rest away from
therear of the tank andmove freely inside the
tank. The top of the vent tube should rest just
below the top of the tank. It should not touch
the top of the tank.
6) When satisfied with the alignment of
the stopper assembly tighten the 3 x 20mm
machine screw until the rubber stopper ex-
pands and seals the tank opening. Do not
overtighten the assembly as this could cause
the tank to split.
Carefully use a lighter or heat gun to
permenently set the angle of the vent tube.
Important: When the stopper assembly is in-
stalled in the tank, the top of the vent tube
should rest just below the top surface of the
tank. It should not touch the top of the tank.
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
thetank is installed inside thefuselage, it may
be difficult to determine which is which.
Rubber band.
Fueltank.
M3 x 10mm.
C/Aglue.
C/Aglue.
GLOW ENGINE.

SPARROW HAWK Instruction Manual
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INSTALLING THE MAIN GEAR WIRES.
M3 x 15mm.
Remove
covering. Pen.
Support mounting
block possition.
cut.
Support
mounting block.
Remove
covering.
Epoxyglue.
Fuel pick-up tube.
Fuelfill tube.
Venttube.
Blow through one of the lines to ensure
thefuel lines have not become kinked in-
side the fuel tank compartment. Air should
flowthrough easily.

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1.5mm.
1.5mm.
3x10mm.
3x15mm.
Machine screw 3 x 15 mm.
Wheel collar.
Landinggear.
Wheel.
1.5mm.
Glue.
Machine screw M3 x 10mm.

SPARROW HAWK Instruction Manual
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 6) Attachthe Z-Bendin the pushrod wireto
the throttle arm on the carburetor.
 5) Boltthe enginetotheenginemountusing
the four machine screws. Double check that
all the screws are tight before proceeding.
4) Remove the engine. Using an drill bit,
drill the mounting holes through the engine
mount at the four locations marked.
 3) When you are satisfied with the align-
ment, mark the locations of the engine
mounting.
4.2 mm diameter.
COWLING INSTALLATION.
1) Slide the fiberglass cowl over the en-
gineandline up the backedgeof the cowl with
themarks you made on thefuselage then trim
and cut.
Pushrodwire.
Trim and cut.
1) Install the pushrod housing through the
predrilledholeinthe firewall andintotheservo
compartment. The pushrod housing should
protrude 1/4" out past the front of the firewall.
MakeaZ-Bend 1/4" fromoneend of the plain
wire pushrod.
MOUNTING THE ENGINE.
 2) Place your engine onto the engine
mount. Adjust the engine is centered of the
edges of the engine case.
MachineScrew M4x30mm.
Glue.
135mm.

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Becauseof the size ofthe cowl, itmay be nec-
essaryto use a needle valveextension for the
highspeedneedle valve. Make thisoutof suf-
ficient length 1.5mm wire and install it into the
end of the needle valve. Secure the wire in
placeby tightening theset screw in the sideof
the needle valve.
2) While keeping the back edge of the
cowl flush with the marks, align the front of
thecowlwiththecrankshaftoftheengine. The
front of the cowl should be positioned so the
crankshaft is in nearly the middle of the cowl
opening.Usethespinner backplate as aguide.
Hold the cowl firmly in place using pieces of
masking tape.
Trim and cut.
Trim and cut.
3) Installthemufflerandmufflerextension
onto the engine and make the cut out in the
cowl for muffler clearance. Connect the fuel
and pressure lines to the carburetor, muffler
and fuel filler valve. Secure the cowl to fuse-
lage using the 3x10mm screws (4).
MachineScrewM3x10mm.
.
MachineScrewM3x10mm.
.
Diameter=4.2mm.
Electric Conversion (EP Power).
(OPTION).

SPARROW HAWK Instruction Manual
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Aluminum spacers.
Aluminum tube.
M5 x 100mm.
M5 x 100mm.
135mm.
A
M3 x 15mm.
Batteryhatch.
Cut.
2
1
M5nut.
Electric motor.
Aluminum tube.
BB BB
Electric motor.
Aluminum spacers.
Aluminum tube.
B
A
4 sets.

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Battery.
Batteryhatch.
Pen.
Trim and cut.
Trim and cut.
MachineScrewM3x10mm.
.
Install the spinner backplate, propeller and
spinner cone.
SPINNER INSTALLATION.
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.
Needlevalve. 5mm.
Batteryhatch.
22
1
C/Aglue.
M3 x 15mm.
M3 x 15mm. 1

SPARROW HAWK Instruction Manual
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THROTTLE SERVO ARM INSTALLATION.
Install adjustableservoconnectorinthe servo
arm .
AdjustableServo
connector.
Servoarm.
Loctite secure.
1PCS.
Throttleservo.
Elevatorservo.
Elevatorservo.
Rudderservo.
Installing the aileron servo in place using the
same techniques used to flap servo.
INSTALLING THE AILERON SERVOS.
Servos. Smallweight.
Thread.
String.
Small weight.
Electric wire.
Aileron
Servo.
Throttleservoarm.
Elevatorservo.
Elevatorservo.
Rudderservo.
INSTALLING THE FUSELAGE SERVO.
INSTALLING THE SWITCH.
Installtheswitch into theprecut hole inthe
side of fuselage.
Switch.

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Attach the string to the servo lead and carefully thread it though the wing.
String.
Small Weight.
Wing. Wing rib.
String.
Small Weight.
AILERONPUSHROD HORN INSTALLATION
Wing.
Aileron.
M2 lock nut.
M2clevis.
75mm.
110mm.
Aileron.
Wing.
Wing.Aileron.
Repeat the procedure for the other wing.
Wing.
Aileron.
M2lock nut. WING ASSEMBLY.
INSTALLING THEAILERON SERVOS.
Maskingtape.
Aluminum tube diameter = 19mm.

SPARROW HAWK Instruction Manual
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Maskingtape.
Removethecovering.
INSTALLINGTHEHORIZONTALSTABILIZER.
Center line.
Hingeslot.
Pen.
Remove covering.
Epoxy.
When cutting through the covering to
remove it, cut with only enough pressure
toonlycut through the covering itself. Cut-
ting into the balsa structure may weaken
it.
Epoxy.

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INSTALLINGTHEVERTICALSTABILIZER.
Putthe vertical stabilizerinto the inthe top
of the horizontal fin. The bottom edge of the
stabilizershouldalso be firmlypushedagainst
the top of the horizontal stabilizer.
Maskingtape.
Remove covering.
Fill epoxy.
Epoxy.
Horizontal
Stabilizer.
90º
Vertical
Stabilizer.

SPARROW HAWK Instruction Manual
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ELEVATOR - RUDDER PUSHROD HORN
INSTALLATION.
Elevator control horn.
Rudder control horn.
 1)Elevatorand rudder pushrodsassembly
follow pictures below.
Maskingtape.
C/Aglue. Hinge.
Attach to servo arm in fuselage. Attach to elevator - rudder control horn.
M2clevis. M2 Lock nut.

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Rudder pushrod.
Control horn.
Elevator Pushrod.
Metalclevis.
Elevator pushrod.
M2lock nut.
Elevator.
Elevator.
Rudder. Throttle.
 2) Install servos arm to servos. Notice the
position of the servo arms on the servos. See
picture below.
Elevator.
Rudder.
Throttle.
MOUNTING THE TAIL WHEEL.
Seepicturebelow.
M3x25mm. M3x10mm.

SPARROW HAWK Instruction Manual
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1) Plug the six servo leads and the switch
lead into the receiver. Plug the battery pack
lead into the switch also.
INSTALLING THE BATTERY-RECEIVER.
 3) Routethe antennain theantenna tube
inside the fuselage and secure it to the bot-
tom of fuselage using a plastic tape.
Receiver.
Antenna.
M3x30 mm.
2) Wrap the receiver and battery pack in
the protective foam rubber to protect them
from vibration.
M3 x 6mm.
INSTALLATION PILOT.
Battery.
M3 x 10mm.
M3x25 mm.
M3x10 mm.
22mm.
Rudder.