Seagull Models SPACE WALKER II User manual

MadeinVietnam.
“Graphics and specfications may change without notice”.
Kit features.
• Ready-made—minimalassembly&finishingrequired.
• Ready-coveredcovering.
• Photo-illustratedstep-by-stepAssemblyManual.
Specifications
Wingspan----------------------------------------82.7in-------------------------210cm.
Wing area----------------------------------- 1086 sq.in--------------------- 70 sq.dm.
Approximate flying weight------------------ 11 lbs------------------------------- 5kg.
Length--------------------------------------------58.7in--------------------------149cm.
Recommended engine size---------- .1.2-1.5 cu.in--------------------- 4-stroke.
Radio System required 4 channels with 6 digital servos/karbonite
or metal gear.
Flying skill level Intermediate/advanced.
Hand-made Almost Ready to Fly R/C Model Aircraft
ASSEMBLY MANUAL MS: 61

SPACE WALKER II Instruction Manual
2
INTRODUCTION.
Thank you for choosing the SPACE WALKER II ARTF by SEAGULL MODELS. The SPACE
WALKERII wasdesignedwith theintermediate/advancedsportflyerinmind.Itisa scale airplane
whichiseasytoflyandquicktoassemble.Theairframeisconventionallybuiltusingbalsa,plywood
tomakeitstrongerthantheaverageARTF,yetthedesignallowstheaeroplanetobekeptlight.You
will find that most of the work has been done for you already. The motor mount has been fitted and
the hinges are pre-installed . Flying the SPACE WALKER II is simply a joy.
This instruction manual is designed to help you build a great flying aeroplane. Please read this
manualthoroughlybeforestartingassemblyofyourSPACEWALKERII.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
proceduresdesignedtohelpthenewpilotonhiswaytosuccessfulR/Cflight.Theywillalsobeable
to advise on any insurance and safety regulations that may apply.
ADDITIONAL ITEMS REQUIRED.
.1.2-1.5 4-stroke engine
6digital servos/karbonite
or metal gear.
Glow plug to suit engine
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 SPACEWALKERII is
made from natural materials and
minor adjustments may have to be
made. Thepaint and plastic parts
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
coloursonthe coveringandtheplas-
tic parts.
1) Carefully remove the aileron from one
of the wing panels. Note the position of the
hinges.
2)Remove each hinge from thewing 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
ofhingeison either sideofthehingeline when
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 placeper the steps that 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
aileronsfrontsurfaceshould lightly contactthe
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.
C/Aglue.
Hinge.
T-pins.
T-pins.
Hinge.

SPACE WALKER II Instruction Manual
4
HINGING THE ELEVATOR.
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.
7) Repeat this process with the other wing
panel, securely hinging the aileron in place.
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,makingsurethat the C/A penetratesinto
both the aileron and wing panel.
6) Using C/A remover/debonder and a
papertowel, remove anyexcess C/A gluethat
may have accumulated on the wing or in the
aileronhinge area.
HINGING THE RUDDER.
Glue the elevator hinges in place using the
same tectniques used to hinge the ailerons.
Glue the rudder hinges in place using the
same tectniques used to hinge the ailerons.
Work the aileron up and down several
times to “work in” the hinges and check
for proper movement.
Note:
See pictures below.Make yourself the
template of your engine on paper.
ENGINE MOUNT INSTALLATION.
Mark and drill 4 holes for engine mount.
Insert 4 blind nuts to firewall.
Hinge.
4x30mm.
Thread locker glue.
Diameter =5.5mm.

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2) Usinga modeling knife, cut onelength
ofsiliconfuel line. Connectoneend of theline
tothe weighted fuel pick up andthe otherend
to the nylon pick up tube.(The silicon tube is
not included).
3) Carefully bend the second nylon tube
up at a 45º angle. This tube is the vent tube.
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 STOPPERASSEMBLY.
Carefully use a lighter or heat gun to
permenently set the angle of the vent tube.
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.
Vent tube. 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 and move freely insidethe
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.
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 difficult to determine which is which.
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.

SPACE WALKER II Instruction Manual
6
1) Assembleand mountingthewheelpants
as shown in the following pictures.
2) Follow diagram below for wheel pant
installation:
Blow through one of the lines to ensure
thefuel lines have not becomekinked in-
side the fuel tank compartment. Air should
flowthrough easily.
WHEELAND WHEEL PANTS INSTALLA-
TION.
Fuel pick-up tube.
Fuelfill tube.
Vent tube.
(2)Wheel Collar.
Axle.
Wheel. Nut.
Nut.
(2)Washer.
Rubber band.
Fueltank.
WheelCollar.
Axle.
Wheel. Nut.
Wheel Pant.
LandingGear.
Nut.
(2)Washer.
7mm
14mm
Lite-Plywood
block.

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3) A drop of C/A glue on the wheel collar
screws will help keep them from coming lose
duringoperation.
Repeat the process for the other wheel.
1) The blind nuts for securing the landing
gearare already mountedinside the fuselage.
2) Using the hardware provided, mount
the main landing gear to the fuselage.
INSTALLING THE MAIN LANDING GEAR.
6x20mm.
Lite-plywoodblock.
LANDING GEAR FAIRING
Landinggear
fairing.
3 x 10mm.
3x10mm. (4 pcs).

SPACE WALKER II Instruction Manual
8
 6) AttachtheZ-Bendin the pushrodwire to
the throttle arm on the carburetor.
COWLING INSTALLATION.
1) Slide the fiberglass cowl over the en-
gineandline up thebackedge of thecowlwith
themarks you made on thefuselage thentrim
and cut.
 5) Bolttheengineto theenginemountusing
the four machine screws. Double check that
all the screws are tight before proceeding.
4.2mm.
Pushrodwire.
MachineScrew 4x30mm.
4) Remove the engine. Using an drill bit,
drill the mounting holes through the engine
mount at the four locations marked.
 2) Place your engine onto the engine
mount. Adjust the engine is centered of the
edges of the engine case.
 3) When you are satisfied with the align-
ment, mark the locations of the engine
mounting.
 1) Install the pushrod housing through the
predrilledholein the firewallandinto the servo
compartment. The pushrod housing should
protrude 1/4" out past the front of the firewall.
Makea Z-Bend 1/4"fromone end ofthe plain
wire pushrod.
MOUNTING THE ENGINE.
155mm
.Trimand cut.
Trimand cut.

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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.Usethespinnerbackplateas a guide.
Hold the cowl firmly in place using pieces of
masking tape.
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).
Install the spinner backplate, propeller and
spinner cone.
DUMMY ENGINE AND 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.
Becauseof the sizeof the cowl,it may benec-
essaryto use a needle valveextension forthe
highspeedneedle valve. Make thisout of suf-
ficient length 1.5mm wire and install it into the
end of the needle valve. Secure the wire in
placeby tightening the set screwin the side of
the needle valve.
MachineScrew 3x10mm.
Glue.

SPACE WALKER II Instruction Manual
10
THROTTLE SERVO ARM INSTALLATION.
1) Install adjustable servo connector in
the servo arm .
2)Usinga modeling knife,carefullyremove
thecoveringat mountingslotof horizontal sta-
bilizer ( both side of fuselage).
 3) Slide the stabilizer into place in the pre-
cut slot in the rear of the fuselage. The stabi-
lizer should be pushed firmly against the front
of the slot.
HORIZONTALSTABILIZER.
1) Using a ruler and a pen, locate the
centerlineof thehorizontalstabilizer,atthetrail-
ing edge, and place a mark. Use a triangle
and extend this mark, from back to front,
across the top of the stabilizer. Also extend
thismark downthe back of the trailing edge of
the stabilizer.
Draw center line.
INSTALLING THE SWITCH.
Installthe switch intothe precut holeinthe
side of fuselage.
Throttle servo.
Rudder
servo. Elevator servo.
Elevator servo.
INSTALLING THE FUSELAGE SERVO.
1) Installthe rubbergrommets and brass
colletsonto the throttleservo. Test fit theservo
into the aileron servo mount.
 2) Secure the servos with the screws pro-
vided with your radio system.
Because the size of servos differ, you
mayneedtoadjustthesize of the precut open-
ing in the mount. The notch in the sides of the
mount allow the servo lead to pass through.
Switch.
Remove covering.
AdjustableServo
connector.
Servoarm.
Loctite secure.
Throttle servor arm .
Rudder
servo. Elevator servo.
Elevator servo.
1 pcs.

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 4) With the stabilizer held firmly in place,
use a pen and draw lines onto the stabilizer
where it and the fuselage sides meet. Do this
on both the right and left sides and top and
bottom of the stabilizer.
Pen.
 6) Using a modeling knife, carefully re-
move the covering that overlaps the stabilizer
mounting platform sides in the fuselage. Re-
move the covering from both the top and the
bottom of the platform sides.
 5) Remove the stabilizer. Using the lines
youjust drewas a guide, carefully removethe
covering from between them using a model-
ingknife.
VERTICAL STABILIZER INSTALLATION.
1) Using a modeling knife, remove the
covering from over the precut hinge slot cut
intothelowerrearportionofthe fuselage. This
slot accepts the lower rudder hinge.
Doublecheckall of yourmeasurementsonce
more before the epoxy cures. Hold the stabi-
lizer in place with T-pins or masking tape and
removeanyexcess epoxy usingapapertowel
and rubbing alcohol.
Remove covering.
When cutting through the covering to re-
move it, cut with only enough pressure
toonly cut through the covering itself. Cutting
into the balsa structure may weaken it.
Hingeslot.
Hinge.
 7) When you are sure that everything is
aligned correctly, mix up a generous amount
of 30 Minute Epoxy. Apply a thin layer to the
topand bottom ofthe stabilizermounting area
and to the stabilizer mounting platform sides
in the fuselage. Put the stabilizer in place and
realign.
2) Slidethe vertical stabilizer into theslot
in the top of the fuselage. The rear edge of
thestabilizer shouldbe flushwiththerearedge
of the fuselage and the lower rudder hinge
should engage the precut hinge slot in the
lowerfuselage. The bottomedge of the stabi-
lizer should also be firmly pushed against the
top of the horizontal stabilizer.

SPACE WALKER II Instruction Manual
12
Set the stabilizer in place and realign. Double
checkallofyour measurements once more be-
foretheepoxycures.Holdthestabilizerinplace
with T-pins or masking tape and remove any
excess epoxyusing a paper toweland rubbing
alcohol. Allow the epoxy to fully cure before
proceeding.
6) When you are sure that everything is
alignedcorrectly, mixupagenerousamountof
30MinuteEpoxy. Applyathinlayertothemount-
ingslotinthetopofthefuselageandtothesides
and bottom of the vertical stabilizer mounting
area. Applyepoxy tothebottomand top edges
of the filler block and to the lower hinge also.
C/Aglue.
Hinge.
5) Slide the vertical stabilizer back in
place. Using a triangle, check to ensure that
thevertical stabilizer is aligned 90ºto thehori-
zontal stabilizer.
4) Remove the stabilizer. Using a mod-
eling knife, remove the covering from below
the lines you drew.
Remove covering.
3) While holding the vertical stabilizer
firmly in place, use a pen and draw a line on
each side of the vertical stabilizer where it
meets the top of the fuselage.
Pen.
When cutting through the covering to re-
moveit, cutwith onlyenough pressureto
only cut through the covering itself. Cutting
into the balsa structure may weaken it.
90º Vertical
Stabilizer.
Horizontal
Stabilizer.

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INSTALLING THE AILERON SERVOS.
String.
Small weight.
Using a small weight (Weighted fuel pick-up
workswell) and thread, feed the string through
the wing as indicated.
Servos. Smallweight.
Thread.
Attach the string to the servo lead and
carefully thread it though the wing. Once you
havethreadthe leadthroughtthewing,remove
the string so it can use for the other servo
lead.Tapetheservoleadtothewingtoprevent
it from falling back into the wing.
Electric wire.
String.
Secure the servos with the screws pro-
vided with your radio system.
Wing bottom.
Thread.
Electric wire.
Pull.
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
mayneedtoadjustthe size of the precut open-
ing in the mount. The notch in the sides of
themountallowtheservoleadtopassthrough.
wing bottom.
Thread.
Small weight.
Lower wing
bottom.

SPACE WALKER II Instruction Manual
14
M2 lock nut.
M3lock nut.
M3nut.
Aluminium washer.
M3 control horn.
Wing bottom.
Wing bottom.
Aileroncontrol horn.
M2 lock nut.
M2clevis.
75mm.
Wing bottom.

1) Aileron control horn:
Mix a small amount of 30 minute epoxy and
lightly coat the inside of the hole in the aileron
and the control horn screw.
AILERONCONTROLHORNINSTALLATION
Wing.
Aileron.
2 sets.
3x40mm.
Wing bottom.
drillhole
3.2mm.
Repeat the procedure for orther wing
haft.
Plastic tape.
Aileronelectric.

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Left side. Elevator
control horn.
Rudder
control horn.
Repeat the procedure for the other wing.
 3)Install therudder controlhorn using the
same method as with the elevator control
horns.
 2) Elevatorandrudder pushrods assembly
follow pictures below.
1) Thread one clevis and M2 lock nut on
toeachelevator control rod. Threadthehorns
onuntilthey areflushwith the endsof the con-
trol rods.
ELEVATOR - RUDDER PUSHROD
INSTALLATION.
Right side. Elevator control horn.
Elevatorpushrod.
Rudderpushrod.
Elevatorpushrod.
Horizontalfin.
Elevator.
2 sets.
3x35mm.
ELEVATOR - RUDDER CONTROL HORN
INSTALLATION.
 1) Install the elevator control horn using
the same method as with the aileron control
horns.
 2) Position the elevator control horn on
the both side of elevator.
Rudder
control horn.
Elevator
control horn.
Metalclevis. Controlhorn.
Rudderpushrod.
Elevatorpushrod.

SPACE WALKER II Instruction Manual
16
INSTALLING TAIL STRUST SUPPORT
The tail strut system assembly follow pic-
tures below.
2
2
1
2
2
M3 x20 mm.
Spring.
3 x10 mm.
1
2
MOUNTING THE TAIL WHEEL.
Seepicturebelow.
Throttle.
Elevator.
Rudder.
Elevator.
3x25mm.
M3 x20 mm.
3 x10 mm.
3x25mm.

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1
2
1
2
2
3
3
4
4
3
3
3
4
M3x20mm.
Bottom.
Bottom.
Bottom.
Bottom.
4
3
4
3
Bottom.

SPACE WALKER II Instruction Manual
18
 1) Plug the six servo leads and the switch
lead into the receiver. Plug the battery pack
lead into the switch also.
2) Wrap the receiver and battery pack in
the protective foam rubber to protect them
from vibration.
 3) Route theantenna in the antennatube
inside the fuselage and secure it to the bot-
tom of fuselage using a plastic tape.
INSTALLING THE BATTERY-RECEIVER.
ATTACHMENT WING-FUSELAGE.
Attach the aluminium tube into fuselage.
Insert two wing panels as pictures below.
Machine Screw 2 x 8mm.
Silicon glue.
Silicon glue.
60mm. 60mm.
2x8mm.
Antenna.
wingtube.
15mm. 15mm.
Siliconglue pilot.
Battery.
Receiver.
INSTALLATION PILOT.

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1) It is critical that your airplane be bal-
anced correctly. Improper balance will cause
yourplaneto lose controland crash. The cen-
ter of gravity is locate 11cm back from the
leading edge of the wing, measured at wing
tip.
BALANCING.
2) If the nose of the plane falls, the plane
is nose heavy. To correct this first move the
battery pack further back in the fuselage. If
this is not possible or does not correct it, stick
small amounts of lead weight on the fuselage
sides under the horizontal stabilizer. If the tail
of the plane falls, the plane is tail heavy.
wingbolt.
 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 sur-
face!
 2) Turnon theradio system, and with the
trim tabs on the transmitter in neutral, center
the control surfaces by making adjustments
totheclevises or adjustable servoconnectors.
The servo arms should be centered also.
 1) We highly recommend setting up the
SPACE WALKER II using the control throws
listed at right. We have listed control throws
for both Low Rate (initial test flying/sport fly-
ing) and High Rate (aerobatic flying).
CONTROL THROWS.
To correct this, move the batteryand receiver
forward orif this is not possible, stick weight
ontothe firewall.When balanced correctly, the
airplane should sit level or slightly nose down
when you lift it up with your fingers.
 4) By moving the position of the adjust-
able control horn out from the control surface,
you will decrease the amount of throw of that
control surface. Moving the adjustable con-
trol horn toward the control surface will in-
crease the amount of throw.
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 every-
thingon.
 C) Check the elevator first. Pull back on
theelevator stick. The elevator halves should
move up. If it they do not, flip the servo re-
versing switch on your transmitter to change
the direction.
11 cm.
INITIALFLYING/SPORT FLYING
Ailerons: 3/16” up 3/16” down.
Elevator: 3/8” up 3/8” down.
Rudder: 1” right 1” left.
AEROBATIC FLYING
Ailerons: 3/8” up 3/8”down.
Elevator: 1” up 1”down.
Rudder: 2” right 2”left.
Donotuse the aerobatic settings for
initialtestflying or sport flying.

SPACE WALKER II Instruction Manual
20
 F) From behind the airplane, look at the
aileronontheright wing half. Movetheaileron
sticktotheright. Therightaileronshouldmove
upand the otheraileronshould movedown. If
it does not, flip the servo reversing switch on
your transmitter to change the direction.
 E)Check the throttle. Moving the throttle
stick forward should open the carburetor bar-
rel. Ifitdoesnot,fliptheservoreversingswitch
on your transmitter to change the direction.
 D) Check the rudder. Looking from be-
hindthe airplane, move the rudder stick tothe
right. Theruddershould move totheright. If it
does not, flip the servo reversing switch on
your transmitter to change the direction.
PREFLIGHT CHECK.
1) Completely charge your transmitter
and receiver batteries before your first day of
flying.
2) Check every bolt and every glue joint
in the SPACE WALKER II to ensure that ev-
erything is tight and well bonded.
3) Double check the balance of the air-
plane. Do this with the fuel tank empty.
4) Checkthecontrol surfaces. Allshould
move in the correct direction and not bind in
any way.
5) If your radio transmitter is equipped
withdual rate switchesdouble checkthat they
are on the low rate setting for your first few
flights.
6) Check to ensure the control surfaces
are moving the proper amount for both low
and high rate settings.
8) Properlybalancethe propeller. An out
of balance propeller will cause excessive vi-
bration which could lead to engine and/or air-
frame failure.
We wish you many safe and enjoyable
flights with your SPACE WALKER II .
7) Check the receiver antenna. It should
be fully extended and not coiled up inside the
fuselage.