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Hand-made Almost Ready to Fly R/C Model Aircraft
MS: 61
ASSEMBLY M ANUAL
“Graphics and specfications may change without notice”.
Specifications
Wingspan---------------------------------------- 82.7 in------------------------- 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.
Kit fe a t ure s.
• Ready-made—minimal assembly & finishing required.
• Ready-covered covering.
• Photo-illustrated step-by-step Assembly Manual.
Made in Vietnam.
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SPACE WALKER II Instruction Manual
INTRODUCTION.
Thank you for choosing the SPACE WALKER II ARTF by SEAGULL MODELS. The SPACE
WALKER II was designed with the intermediate/advanced sport flyer in mind. It is a 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. 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
manual thoroughly before starting assembly of your SPACE WALKER II . 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.
.1.2-1.5 4-stroke engine
6 digital 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
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
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.
HARDWARE PACK
COWLING
Landing gear.....
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NOTE: To avoid scratching your new aero-
plane 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 SPACE WALKER II 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 debonder and acetone. Do not let these
chemicals come in contact with the
colours on the covering and the plastic parts.
T-pins.
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.
T-pins.
HINGING THE AILERONS.
Note:
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.
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.
Hinge.
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.
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.
C/A glue.
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SPACE WALKER II Instruction Manual
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.
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.
Hinge.
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.
Note:
Work the aileron up and down several
times to “work in” the hinges and check
for proper movement.
HINGING THE ELEVATOR.
ENGINE MOUNT INSTALLATION.
See pictures below.Make yourself the
template of your engine on paper.
4x30mm.
Mark and drill 4 holes for engine mount.
Insert 4 blind nuts to firewall.
Glue the elevator hinges in place using the
same tectniques used to hinge the ailerons.
HINGING THE RUDDER.
Glue the rudder hinges in place using the
same tectniques used to hinge the ailerons.
4
Diameter =5.5mm.
Thread locker glue.
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INSTALLING THE STOPPER ASSEMBLY.
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.
2) 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.(The silicon tube is
not included).
3) Carefully bend the second nylon tube
up at a 45º angle. This tube is the vent tube.
Vent tube.
Fuel fill tube.
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.
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.
5) 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. 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 expands and seals the tank opening. Do not
overtighten the assembly as this could cause
the tank to split.
Fuel pick up tube.
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
.
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SPACE WALKER II Instruction Manual
Fuel tank.
Rubber band.
Lite -Plywood
Vent tube.
block.
Fuel fill tube.
Fuel pick-up tube.
Blow through one of the lines to ensure
the fuel lines have not become kinked inside the fuel tank compartment. Air should
flow through easily.
WHEEL AND WHEEL PANTS INSTALLA-
TION.
1) Assemble and mounting the wheel pants
as shown in the following pictures.
Wheel Collar.
Axle.
Wheel.
(2) Wheel Collar.
Landing Gear.
Nut.
Nut.
(2) Washer.
Wheel Pant.
7mm
14mm
(2) Washer.
2) Follow diagram below for wheel pant
installation:
6
Axle.
Wheel.
Nut.
Nut.
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Lite-plywood block.
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LANDING GEAR FAIRING
3x10mm.
(4 pcs).
Landing gear
fairing.
3) 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.
1) The blind nuts for securing the landing
gear are already mounted inside the fuselage.
2) Using the hardware provided, mount
the main landing gear to the fuselage.
6x20mm.
3 x 10mm.
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SPACE WALKER II Instruction Manual
MOUNTING THE ENGINE.
1) Install the pushrod housing through the
predrilled hole in the firewall and into the servo
compartment. The pushrod housing should
protrude 1/4" out past the front of the firewall.
Make a Z-Bend 1/4" from one end of the plain
wire pushrod.
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 alignment, mark the locations of the engine
mounting.
4) Remove the engine. Using an drill bit,
drill the mounting holes through the engine
mount at the four locations marked.
Pushrod wire.
Machine Screw 4x30mm.
155mm
.
4.2mm.
5) Bolt the engine to the engine mount using
the four machine screws. Double check that
all the screws are tight before proceeding.
COWLING INSTALLATION.
1) 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.
Trim and cut.
Trim and cut.
6) Attach the Z-Bend in the pushrod wire to
the throttle arm on the carburetor.
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DUMMY ENGINE AND SPINNER
INSTALLATION.
Because of the size of the cowl, it may be necessary to use a needle valve extension for the
high speed needle valve. Make this out of sufficient length 1.5mm wire and install it into the
end of the needle valve. Secure the wire in
place by tightening the set screw in the side of
the needle valve.
2) While keeping the back edge of the
cowl flush with the marks, align the front of
the cowl with the crankshaft of the engine. 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.
3) Install the muffler and muffler extension
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 fuselage using the 3x10mm screws (4).
Install the spinner backplate, propeller and
spinner cone.
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.
Glue.
Machine Screw 3x10mm.
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SPACE WALKER II Instruction Manual
INSTALLING THE FUSELAGE SERVO.
Loctite secure.
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) Install the rubber grommets and brass
collets onto the throttle servo. Test fit the servo
into the aileron servo mount.
2) Secure the servos with the screws provided with your radio system.
1 pcs.
Throttle servor arm .
Adjustable Servo
connector.
Servo arm.
Elevator servo.
Throttle servo.
Rudder
Elevator servo.
Elevator servo.
servo.
INSTALLING THE SWITCH.
Install the switch into the precut hole in the
side of fuselage.
Rudder
servo.
Elevator servo.
HORIZONTAL STABILIZER.
1) Using a ruler and a pen, locate the
centerline of the horizontal stabilizer, at the trailing edge, and place a mark. Use a triangle
and extend this mark, from back to front,
across the top of the stabilizer. Also extend
this mark down the back of the trailing edge of
the stabilizer.
Remove covering.
Switch.
THROTTLE SERVO ARM INSTALLATION.
1) Install adjustable servo connector in
the servo arm .
10
Draw center line.
2) Using a modeling knife, carefully remove
the covering at mounting slot of horizontal stabilizer ( both side of fuselage).
3) Slide the stabilizer into place in the precut slot in the rear of the fuselage. The stabilizer should be pushed firmly against the front
of the slot.
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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.
5) Remove the stabilizer. Using the lines
you just drew as a guide, carefully remove the
covering from between them using a modeling knife.
Double check all of your measurements once
more before the epoxy cures. Hold the stabilizer in place with T-pins or masking tape and
remove any excess epoxy using a paper towel
and rubbing alcohol.
VERTICAL STABILIZER INSTALLATION.
Remove covering.
When cutting through the covering to re-
move it, cut with only enough pressure
to only cut through the covering itself. Cutting
into the balsa structure may weaken it.
6) Using a modeling knife, carefully remove the covering that overlaps the stabilizer
mounting platform sides in the fuselage. Remove the covering from both the top and the
bottom of the platform sides.
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
top and bottom of the stabilizer mounting area
and to the stabilizer mounting platform sides
in the fuselage. Put the stabilizer in place and
realign.
Hinge.
1) Using a modeling knife, remove the
covering from over the precut hinge slot cut
into the lower rear portion of the fuselage. This
slot accepts the lower rudder hinge.
Hinge slot.
2) Slide the vertical stabilizer into the slot
in the top of the fuselage. The rear edge of
the stabilizer should be flush with the rear edge
of the fuselage and the lower rudder hinge
should engage the precut hinge slot in the
lower fuselage. The bottom edge of the stabilizer should also be firmly pushed against the
top of the horizontal stabilizer.
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SPACE WALKER II Instruction Manual
5) Slide the vertical stabilizer back in
place. Using a triangle, check to ensure that
the vertical stabilizer is aligned 90º to the horizontal stabilizer.
Vertical
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.
Horizontal
Stabilizer.
90º
6) When you are sure that everything is
aligned correctly, mix up a generous amount of
30 Minute Epoxy. Apply a thin layer to the mounting slot in the top of the fuselage and to the sides
and bottom of the vertical stabilizer mounting
area. Apply epoxy to the bottom and top edges
of the filler block and to the lower hinge also.
Stabilizer.
4) Remove the stabilizer. Using a mod-
eling knife, remove the covering from below
the lines you drew.
Set the stabilizer in place and realign. Double
check all of your measurements once more before the epoxy cures. Hold the stabilizer in place
with T-pins or masking tape and remove any
excess epoxy using a paper towel and rubbing
alcohol. Allow the epoxy to fully cure before
proceeding.
C/A glue.
Hinge.
Remove covering.
When cutting through the covering to re-
move it, cut with only enough pressure to
only cut through the covering itself. Cutting
into the balsa structure may weaken it.
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INSTALLING THE AILERON SERVOS.
Servos.
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.
Using a small weight (Weighted fuel pick-up
works well) and thread, feed the string through
the wing as indicated.
Small weight.
Thread.
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. Tape the servo lead to the wing to prevent
it from falling back into the wing.
String.
Electric wire.
Thread.
Small weight.
String.
Secure the servos with the screws pro-
vided with your radio system.
Lower wing
bottom.
Small weight.
wing bottom.
Wing bottom.
Thread.
Pull.
Electric wire.
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SPACE WALKER II Instruction Manual
Aileron electric.
Plastic tape.
Repeat the procedure for orther wing
haft.
AILERON CONTROL HORN INSTALLATION
2 sets.
Wing bottom.
M3 lock nut.
M3 nut.
Aluminium washer.
M3 control horn.
Wing bottom.
3x40mm.
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.
Wing.
Aileron.
drill hole
3.2mm.
Aileron control horn.
Wing bottom.
75mm.
M2 clevis.
M2 lock nut.
Wing bottom.
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M2 lock nut.
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Repeat the procedure for the other wing.
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.
2 sets.
3x35mm.
Horizontal fin.
Elevator.
Elevator
control horn.
Rudder
control horn.
ELEVATOR - RUDDER PUSHROD
INSTALLATION.
1) Thread one clevis and M2 lock nut on
to each elevator control rod. Thread the horns
on until they are flush with the ends of the control rods.
2) Elevator and rudder pushrods assembly
follow pictures below.
Right side.
Elevator control horn.
3) Install the rudder control horn using the
same method as with the elevator control
horns.
Left side.
Elevator
control horn.
Rudder
control horn.
Elevator pushrod.
Metal clevis.
Rudder pushrod.
Rudder pushrod.
Control horn.
Elevator pushrod.
Elevator pushrod.
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SPACE WALKER II Instruction Manual
Elevator.
Throttle.
MOUNTING THE TAIL WHEEL.
Rudder.
See picture below.
Elevator.
INSTALLING TAIL STRUST SUPPORT
The tail strut system assembly follow pic-
tures below.
M3 x20 mm.
Spring.
3x25mm.
3 x10 mm.
3x25mm.
2
1
2
2
1
2
2
16
3 x10 mm.
M3 x20 mm.
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1
Bottom.
4
3
3
4
4
3
3
4
2
3
3
Bottom.
Bottom.
2
1
4
2
Bottom.
3
Bottom.
M3x20mm.
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SPACE WALKER II Instruction Manual
INSTALLATION PILOT.
Battery.
2x8mm.
Receiver.
15mm.
60mm.
Silicon glue.
Silicon glue.
Machine Screw 2 x 8mm.
15mm.
60mm.
Antenna.
ATTACHMENT WING-FUSELAGE.
Attach the aluminium tube into fuselage.
Silicon glue pilot.
INSTALLING THE BATTERY-RECEIVER.
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 the antenna in the antenna tube
inside the fuselage and secure it to the bottom of fuselage using a plastic tape.
wing tube.
Insert two wing panels as pictures below.
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wing bolt.
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CONTROL THROWS.
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 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!
BALANCING.
1) It is critical that your airplane be balanced correctly. Improper balance will cause
your plane to lose control and crash. The cen-
ter of gravity is locate 11cm back from the
leading edge of the wing, measured at wing
tip.
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.
To correct this, move the battery and receiver
forward orif this is not possible, stick weight
onto the firewall.When balanced correctly, the
airplane should sit level or slightly nose down
when you lift it up with your fingers.
INITIAL FLYING/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.
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.
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.
11 cm.
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.
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SPACE WALKER II Instruction Manual
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.
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.
E) Check the throttle. Moving the throttle
stick forward should open the carburetor barrel. 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.
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 first few
flights.
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.
2) Check every bolt and every glue joint
in the SPACE WALKER II to ensure that ev-
erything is tight and well bonded.
We wish you many safe and enjoyable
flights with your SPACE WALKER II .
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