Black Horse Model Space Walker BH78 Owner's manual

Instruction Manual book
SPECIFICATION
MadeinVietnam.


Wingspan : 2,100mm. 82.68 in.


Length : 1,500 mm. 59.06in.


Weight : 4.5kg. 9.90lbs.
PartsListingrequired(notincluded).


Radio : 4 channels.


Servo : 5 servos.


Glow Engine : 91 cu.in. 2 stroke.
120cu.in. 4 stroke.

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SPACE WALKER- Item code:BH78. Instruction Manual
This instruction manual is designed to help you build a great flying aeroplane. Please read this
manualthoroughlybeforestartingassemblyofyour SPACE WALKER.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.
IfyouareinexperiencedwithbasicR/CflightwestronglyrecommendyoucontactyourR/Csupplier
and join your local R/C Model Flying Club. R/C Model Flying Clubs offer a variety of training
proceduresdesignedtohelp the newpilotonhiswayto successfulR/C flight.They willalso beable
to advise on any insurance and safety regulations that may apply.
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.
Some more parts.
HARDWAREPACK
COWLING.
Landinggear.....
Toavoid scratching yournew airplane,do not
unwrap the pieces until they are needed for
assembly. Cover your workbench with an old
towel or brown paper, both to protect the air-
craftand toprotect thetable.Keep acouple of
jars or bowls handy to hold the small parts af-
ter you open the bag.
Pleasetrialfitall the parts.Makesureyouhave
the correct parts and that they fit and are
alignedproperlybefore gluing!Thiswill assure
properassembly.SPACEWALKER ARFishand
made from natural materials, every plane is
unique and minor adjustments may have to
be made. However, you should find the fit su-
perior and assembly simple.
The painted and plastic parts used in this kit
are fuel proof. However, they are not tolerant
of many harsh chemicals including the follow-
ing:paintthinner,C/Aglueaccelerator,C/Aglue
debonderandacetone.Donot let thesechemi-
cals come in contact with the colors on the
covering and the plastic parts.
PARTS LISTING.
FUSELAGE ASSEMBLY
(1) Fuselage.
WING ASSEMBLY
(1) Right wing half with pre-installed
aileron.
(1) Left wing half with pre-installed
aileron.
Tail section assembly
(1) Vertical stabilizer with pre-
installedrudder.
(1) Horizontal stabilizer with pre-
installedelevatorhalves.
SUGGESTION.
NOTE.

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SPACE WALKER- Item code:BH78. Instruction Manual
+ This is not a toy
+ Be sure that no other flyers are using your
radio frequency.
+ Do not smoke near fuel
+ Store fuel in a cool, dry place, away from
children and pets.
+ Wear safety glasses.
+Theglowplugclipmustbe securelyattached
to the glow plug.
+ Do not flip the propeller with your fingers.
+ Keep loose clothing and wires away from
thepropeller.
+ Do not start the engine if people are near.
Donot standin linewith the sideof thepropel-
ler.
+ Make engine adjustments from behind the
propeller only. Do not reach around the spin-
ningpropeller.
SAFETY PRECAUTION.
REPLACEMENT LARGE PARTS
B. Wing panel.
C. Fuselage.
A.Cowling.
D . Horizontal stabilizer.
F. Aluminium wing dihedral brace.
E. Vertical stabilizer
REPLACEMENT SMALL PARTS
1. Engine plastic.
G. Decal sheet.
3. Wheel pants.
4. Main gear.
A.
E. D.
F.
B. B.
C.
G.
2. Wheels. 5.Covering of main gear.
6. Plastic for rudder.
7. Tail gear.
8. Fuel tank.
9. Spinner.
 1. Install the rubber grommets and brass
eyelets onto the aileron servo.
INSTALLING THEAILERON SERVOS.
Bottom side
C/Aglue
C/Aglue
Bottom side
Aileron
1.
2.
3.
4. 5.
6.
7.
8.
9.

4
SPACE WALKER- Item code:BH78. Instruction Manual
C/Aglue
2.Usinga modelingknife, removethe cov-
ering servo tray.
3. Drill 1,5mm pilot holes through the block
of wood for each of the four mounting screws
provided with the servo. Install servo into ai-
leron servo tray as same as picture below.
4. Using the thread as a guide and using
masking tape, tape the servo lead to the end
of the thread: carefully pull the thread out.
When you have pulled the servo lead out, re-
move the masking tape and the servo lead
from the thread.
5. Instal servo tray with aileron servo into
the wing as same as picture below.
Thread
Electric wire
C/Aglue
Bottom side
Bottom side
Aileron
Removecovering
Servotray.
Secure

5
SPACE WALKER- Item code:BH78. Instruction Manual
Repeat the procedure for the other wing
half.
2 x 10 mm.
INSTALLINGTHEAILERON CONTROLHORN.
ControlhornofAileron
Secure
Servo tray.
Nilon control clasp.
3 x 40mm
Installaileroncontrolhornassame
aspicturebelow.
Bottomside
Remove covering
Bottomside

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SPACE WALKER- Item code:BH78. Instruction Manual
Bottomside
Repeat the procedure for the other wing
half.
Installing the aileron linkages as pictures
below.
INSTALLING THE AILERON
LINKAGES.
INSTALLING THE ENGINE MOUNT.
Repeat the procedure for the other wing
half.
4x30mm
.
4x30mm
Bottom side
Bottom side
Bottom side
M3 M3 lock nut
70mm

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SPACE WALKER- Item code:BH78. Instruction Manual
INSTALLING THE STOPPER ASSEMBLY
1. The stopper has been pre-assembled at
the factory.
2.Using amodeling knife,cut onelengthof
siliconfuel line(the lengthof siliconfuel lineis
calculated by how the weighted clunk should
restabout 8mmaway fromtherear ofthe tank
andmove freelyinsidethe tank).Connect one
end of the line to the weighted clunk and the
otherend tothe nylonpick up tubein thestop-
per.
3.Carefully bendthe secondnylon tubeup
ata45 degreeangle(usinga cigarettelighter).
This tube will be the vent tube to the muffler.
4.Carefully bendthe thirdnylon tubedown
ata45 degreeangle(usinga cigarettelighter).
This tubewill beventtube tothefueling valve.
When the stopper assembly is installed
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.
 5. Test fit the stopper assembly into the
tank. It may be necessary to remove some of
the flashing around the tank opening using
amodeling knife. Ifflashing is present, make
sure none of it falls into the tank.
7. Using a modeling knife, cut 3 lengths of
fuel line 150mm long. Connect 2 lines to the 2
vent tubes and 1 line to the fuel pickup tube in
the stopper.
 8. Feed three lines through the fuel tank
compartment and through the pre-drilled hole
in the firewall. Pull the lines out from behind
the engine, while guiding the fuel tank into
place. Push the fuel tank as far forward as
possible,thefront ofthetank shouldjustabout
touch the back of the firewall.
6. When satisfied with the alignment of the
stopper assembly tighten the 3mm x 20mm
machine screw until the rubber stopper ex-
pandsandseals thetankopening. Donot over
tighten the assembly as this could cause the
tank to split.
Do not secure the tank into place perma-
nently until after balancing the airplane.
You may need to remove the tank to mount
the battery in the fuel tank compartment.
Blow through one of the lines to ensure
the fuel lines have not become kinked inside
the fuel tank compartment. Air should flow
througheasily.
9. To secure the fuel tank in place, apply a
bead of silicon sealer to the forward area of
thetank, whereitexits the fuselagebehindthe
enginemountingboxandto therear of thetank
at the forward bulkhead.
FUEL TANK.
Slicontubenot included.

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SPACE WALKER- Item code:BH78. Instruction Manual
Locate the long piece of wire used for the
throttlepushrod. One endofthe wirehasbeen
pre-bend in to a “Z” bend at the factory. This
“Z” bend should be inserted into the throttle
armoftheenginewhenthe engineisfitted onto
theengine mount.Fit theengine totheengine
mount using the screws provided.
INSTALLING THE ENGINE-
THROTTLE.
Fueltank
14.5 cm.
Drill a hole 4mm diameter
Markpoint
Right side.

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SPACE WALKER- Item code:BH78. Instruction Manual
1. Slide the fiberglass cowl over the en-
gineand lineupthe backedgeof thecowlwith
the marks you made on the fuselage.
4 x 30mm
Left side.
Left side.
Pushrod wire.
Right side.
Right side.
COWLING.
Pushrod wire.
Right side.
Secure

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SPACE WALKER- Item code:BH78. Instruction Manual
Trim and cut.
Right side
3. Slide the cowl back over the engine
andsecure itin placeusingfour woodscrews.
See picture below.
4. Installthemufflerandmufflerextension
onto the engine and make the cutout in the
cowl for muffler clearance. Connect the fuel
and pressure lines to the carburetor, muffler
andfuel fillervalve.
INSTALLING THE SPINNER.
Installthespinner backplate,propellerand
spinner cone. The spinner cone is held in
place using two 3mm x 15mm wood screws.
3 x 15mm
Left side
3 x 10mm
Right side
2. While keeping the back edge of the
cowl flush with the marks, align the front of
thecowlwith the crankshaftoftheengine. The
front of the cowl should be positioned so the
crankshaft is in nearly the middle of the cowl
opening. Hold the cowl firmly in place using
pieces of masking tape.
Right side
Bottom side
Front view
3 x 12mm

11
SPACE WALKER- Item code:BH78. Instruction Manual
1. Install one adjustable metal connector
through the third hole out from the center of
one servo arm, enlarge the hole in the servo
arm using a 2mm drill bit to accommodate the
servo connector. Remove the excess mate-
rial from the arm.
After installing the adjustable metal con-
nector apply a small drop of thin C/A to
the bottom nut. This will prevent the con-
nector from loosening during flight.
INSTALLING THE THROTTLE PUSHROD.
Throttle servo
Servoarm
Connector.
Cut
C/Aglue
1. Install the rubber grommets and brass
colletsintotheelevator servo.Test fittheservo
into the servo tray.
2. Mount the servo to the tray using the
mountingscrewsprovided withyourradio sys-
tem.
ELEVATOR INSTALLATION.
SERVO INSTALLATION.
Throttle servo
Secure

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SPACE WALKER- Item code:BH78. Instruction Manual
Remove covering
C/Aglue
C/Aglue
2. Draw a center line onto the horizontal
stabilizer. Then slide the horizontal into the
fuselage.
1. Using a modeling knife, cut away the
covering from the fuselage for the stabilizer
and remove it.
C/Aglue
C/Aglue
center line
Check to mark sure the wing and stabi-
lizer are paralell. If they are not, lightly sand
theopening inthe fuselagefor thestabilizer
until the stabilizer is paralell to the wing.

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SPACE WALKER- Item code:BH78. Instruction Manual
3. Markthe shapeof thevertical onthe left
and right sides onto the horizontal stabilizer
using a felt-tip pen
When cutting through the covering to
remove it, cut with only enough pressure
to only cut through the covering it’s self.
Cutting into the balsa structure may
weaken it. This could lead to possible fail-
ure during flight.
4. Remove the stabilizer. Using the lines
youjust drewas aguide, carefullyremove the
coveringfrom betweenthemusing a modeling
knife.
5. 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 bottomof thestabilizermounting area
and to the stabilizer mounting platform sides
inthefuselage. Slide thestabilizerinplace and
re-align. Double check all of your measure-
ments one more time before the epoxy cures.
Remove any excess epoxy using a paper
towel and rubbing alcohol and hold the stabi-
lizer in place with T-pins or masking tape.
Bottom side
Markline
Remove covering
Epoxy glue
6.After the epoxy has fully cured, remove
the masking tape or T-pins used to hold the
stabilizer in place and carefully inspect the
glue joints. Use more epoxy to fill in any
gaps that were not filled previously and
clean up the excess using a paper towel and
rubbingalcohol.
C/Aglue
Top side
C/Aglue
Elevator control horn install as same as the
way of aileron control horn. Please see pic-
tures below.
ELEVATOR CONTROL HORN INSTALLA-
TION.
Controlhornofelevator.
3mmx40mm.
Nilon control clasp.

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SPACE WALKER- Item code:BH78. Instruction Manual
 Elevator pushrod install as same as the
way of aileron pushrod.
Remove covering
ELEVATOR PUSHDROD
INSTALLATION
Elevator
pushrod
Elevator
pushrod

15
SPACE WALKER- Item code:BH78. Instruction Manual
Rudder servo install as same as method of
elevator servo. See picture below:
Secure
Secure
Cut
Elevatorservo
VERTICAL INSTALLATION.
C/Aglue
C/Aglue

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SPACE WALKER- Item code:BH78. Instruction Manual
3. Markthe shapeof thevertical onthe left
and right side on the rudder using a felt-tip
pen.
4. Now, remove the rudder and using a
modeling knife, carefully cut just inside the
marked lines and remove the film of the rud-
der. Just as you did with the horizontal stabi-
lizer, make sure you only press hard enough
to cut the film, not the balsa rudder.
Hingeslot.
Markline
Remove
covering
Also carefully remove the covering from
below the lines as you drew as same picture
below.
Hinge.
 1) Using a modeling knife, cut away the
covering from the end of fuselage for the rud-
derhinge.
2) Putthe rudderinto thefuselageassame
as picture below.
5. Put the vertical stabilizer back in
place. Using a triangle, check to ensure
that the vertical stabilizer is aligned 90 de-
gree to the horizontal stabilizer.
C/Aglue

17
SPACE WALKER- Item code:BH78. Instruction Manual
6) When you are sure that everything is a
aligned correctly, mix up a generous amount
of 30 minute epoxy. Apply a thin layer to the
slot in the mounting platform and to the verti-
cal stabilizer mounting area. Apply epoxy to
the lower rudder hinge. Set the stabilizer in
place and re-align. Double check all of your
measurements once more before the epoxy
cures. Remove any excess epoxy using a
paper towel and rubbing alcohol and hold the
stabilizerin placewithT-pinsor maskingtape.
Allow the epoxy to fully cure before proceed-
ing.
Epoxyglue
Epoxyglue
C/A glue
C/Aglue
Rudder control horn install as same as the
way of aileron control horn. Please see pic-
tures below.
3mm x 40mm.
Nilon control clasp.
M3 lock nut.
RUDDER CONTROL HORN INSTALLA-
TION.
Controlhornofelevator.
Remove covering

18
SPACE WALKER- Item code:BH78. Instruction Manual
 Rudder pushrod install as same as the way
of aileron pushrod.
RUDDER PUSHROD INSTALLATION.
Rudder
control horn
C/Aglue

19
SPACE WALKER- Item code:BH78. Instruction Manual


1. Set the tail wheel assembly in place
on the plywood plate. The pivot point of the
tail wheel wire should be even with the rud-
derhingelineand thetailwheelbracketshould
be centered on the plywood plate.
MOUNTING THE TAIL WHEEL
BRACKET.
3mm x 15mm


2. Using a pen, mark the locations of the
two mounting screws. Remove the tail wheel
bracket and drill 1mm pilot holes at the loca-
tions marked.


3. Secure the tail wheel bracket in place
using three 3mm x 15mm wood screws. Be
careful not to overtighten the screws.
Markpoint
Secure
PARTSREQUIRED
INSTALLING THE MAIN LANDING GEAR.
Secure

20
SPACE WALKER- Item code:BH78. Instruction Manual
Epoxyglue.
Drillahole
5mm diametter
C/Aglue
9mm