Black Horse Model BH 105 Owner's manual

Instruction Manual book
SPECIFICATION
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Wingspan : 2,240 mm 88.19 in.
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Length : 2,050 mm 80.71 in.
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Weight : 9.3 kg 20.46 Lbs.
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Radio : 08 channels.
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Servo : 10 servos.
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Engine : 50-55CC
MadeinVietnam.
ITEM CODE:BH 105.

2
WESTLAND WYVERN - Item code:BH105 INSTRUCTION MANUAL.
This instruction manual is designed to help you build a great flying aeroplane. Please read this
manual thoroughly before starting assembly of your WESTLAND WYVERN 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.
IfyouareinexperiencedwithbasicR/CflightwestronglyrecommendyoucontactyourR/Csupplier
and join your local R/C Model Flying Club. R/C Model Flying Clubs offer a variety of training
proceduresdesignedtohelpthenew pilotonhiswaytosuccessfulR/C flight.Theywillalso 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,donot
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.Keepacoupleof
jars or bowls handy to hold the small parts af-
ter you open the bag.
Pleasetrialfitalltheparts. Makesureyouhave
the correct parts and that they fit and are
alignedproperly beforegluing!Thiswillassure
properassembly.WESTLAND WYVERN ARF is
handmadefromnaturalmaterials,everyplane
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. Donotletthesechemi-
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-
installedelevator halves.
SUGGESTION.
NOTE.

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WESTLAND WYVERN - Item code:BH105 INSTRUCTION MANUAL.
Caution: this model is not a toy!
Ifyouare abeginner tothis typeofpowered model,please askan experiencedmodelflyer forhelp
and support. If you attempt to operate the model without knowing what you are doing you could
easily injure yourself or somebody else. Please keep your safety and well-being in mind at all
times.
Important: before you start construction
Even if you have already built a large number of RC models please read right through these
instructions and check all the kit components against the parts list. We have taken great trouble to
keep construction as simple as possible, without making any compromises in the area of safety.
Note regarding the film covering
Minor creases or bubbles may develop in the film covering due to major fluctuations in weather
conditions (temperature, humidity etc.); in rare cases you may even find a slight warp in a
component. These minor faults are in the nature of film-covered built-up wooden structures, and
can easily be corrected using a heat gun, as commonly used for modelling.
Creases: Blow warm air over the area and rub down with a soft cloth.
Wing warp: Hold the panel twisted gently in the opposite direction to the warp, and apply
warm air to remove the creases from the covering.
Caution! do not heat the film more than is absolutely necessary. If the air or the iron is too hot, the
film may melt and holes may be formed.
This model is highly pre-fabricated and can be built in a very short time. However, the work which
youhaveto carryout isimportantandmust bedone carefully.The modelwill only bestrong andfly
well if you complete your tasks competently - so please work slowly and accurately.
When self-tapping screws have to be screwed into wood, apply a little white glue to prevent
them shaking loose: just squirt white glue into the hole and fit the screw.
REPLACEMENT LARGE PARTS
+ 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.
+The glow plug clip must be securely attached to the glow plug.
+ Do not flip the propeller with your fingers.
+ Keep loose clothing and wires away from the propeller.
+ Do not start the engine if people are near. Do not stand in line with the side of the propeller.
+ Make engine adjustments from behind the propeller only. Do not reach around the spinning
propeller.
SAFETY PRECAUTION.
B. Wing panel.
C. Fuselage.
D. Horizon stabilizer.
A.Cowling. F. Aluminium wing dihedral brace.
E. Vertical stabilizer.
B E
F
D
C
D
B
A
G.
G. Decal sheet

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WESTLAND WYVERN - Item code:BH105 INSTRUCTION MANUAL.
 1) Install the rubber grommets and brass
eyelets onto the aileron servos.
 2)Usinga modelingknife, removethecov-
ering at possition show below.
Removecovering
Servo tray.
5. Valve one way.
3. 3 way connector.
6.Valve control.
4. 4 way connector.
1. Door mounting wheel.
2.Air retract main gear.
REPLACEMENT SMALL PARTS
8. Plastic part for tail
gear.
7.connector.
11.Air tanks.
13.Spinner.
12.Air line sets.
9. Tail gear set.
14.Plastic parts of Fuselage
16.Drop tank
17.Drop
10.Wheels.
15.Plastic partforbottom
fuselage
18.Engine mount ply of wood.
19. Fuel tank.
12.
2.
1.
1.
2.
14.
11.
10.
9.
8.
6.
5.
4.
7.
3.
13.
16.
17.
15. 18.
19.
Bottom side
Flap
Aileron
Bottom side
1.INSTALLING THE AILERON SERVOS.
I. AILERON.

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WESTLAND WYVERN - Item code:BH105 INSTRUCTION MANUAL.
 4) Drill1,6mm pilotholes throughtheblock
of wood for each of the four mounting screws
provided with the servo.
 5. Instal servo tray with aileron servo into
the wing as same as picture below.
Repeat the procedure for the other wing
half.
Installing the aileron linkages as pictures
below.
 3) 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.
Thread
Electric wire
Secure.
2x10mm.
3mm x 25mm.
2.INSTALLING THE AILERON CONTROL HORN.
Control horn
of the aileron
3.INSTALLING THE AILERON
LINKAGES.
Secure.
2x8 mm.
60 mm

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WESTLAND WYVERN - Item code:BH105 INSTRUCTION MANUAL.
Repeat the procedure for the other wing
half.
C/A glue.
Secure.
II. FLAP.
1.INSTALLING THE FLAP SERVOS.
Flap
2x10mm.
Electric
wire Thread
Secure.
2. INSTALLING THE FLAP CONTROL HORN.
C/A glue.
Control horn
of the flap
3mm x 15mm.

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WESTLAND WYVERN - Item code:BH105 INSTRUCTION MANUAL.
Repeat the procedure for the other wing
half.
INSTALLING AIR RETRACTABLE
LANDING GEAR.
Secure.
secure
C/A glue.
C/A glue.
C/A glue.
C/A glue.
60 mm
Installing the aileron linkages as pictures
below.
INSTALLING THE FLAP
LINKAGES.
2x8 mm.
1. 1.
11.Air tank
3 way conector.
4wayconector.
Valve one way
Valve
control.
10.
2.
12.

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WESTLAND WYVERN - Item code:BH105 INSTRUCTION MANUAL.
ITEM CODE: BH 105

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WESTLAND WYVERN - Item code:BH105 INSTRUCTION MANUAL.
3 x 15mm
3 x 16mm
Secure Secure

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WESTLAND WYVERN - Item code:BH105 INSTRUCTION MANUAL.
Epoxy glue.
Drill a hole
3.2mm diameter
Drill a hole
3.2mm diameter
Lock
3x12mm
3x12mm
Lock .
Secure
Drill a hole
3.2mm diameter
3 x 16mm
Lock

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WESTLAND WYVERN - Item code:BH105 INSTRUCTION MANUAL.
Epoxy glue.
Drill a hole
3mmdiameter
Drill a hole
3mm diameter
Secure
Secure
3x12mm

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WESTLAND WYVERN - Item code:BH105 INSTRUCTION MANUAL.
Markline.
Remove
covering
Epoxy glue.
3x12mm 3x12mm
Secure
3x12mm

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WESTLAND WYVERN - Item code:BH105 INSTRUCTION MANUAL.
Epoxy glue.
C/A glue.
Markline.
Remove
covering
C/A glue.
Secure
Secure
Secure
3x12mm

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WESTLAND WYVERN - Item code:BH105 INSTRUCTION MANUAL.
Front view.
INSTALLING THE ENGINE.
Secure
Drill a hole
4mmdiameter
5x70mm
Secure
INSTALLING THE ENGINE MOUNT.
See pictures below:
Bottom side
Repeat the procedure for the other wing
half.

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WESTLAND WYVERN - Item code:BH105 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 - CABLE.
Throttleservo.
Throttle cable.
3x12mm
Mount ply of
wood .
Secure

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WESTLAND WYVERN - Item code:BH105 INSTRUCTION MANUAL.
 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.
 6) When satisfied with the alignment of
thestopperassemblytightenthe3mmx20mm
machine screw until the rubber stopper ex-
pandsand sealsthetank opening.Do notover
tighten the assembly as this could cause the
tank to split.
 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.
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, whereit exitsthefuselage behindthe
enginemountingbox andtotherearofthetank
at the forward bulkhead.
When the stopper assembly is installed in the
tank, the top of the vent tube should rest just
belowthe topsurfaceof thetank. Itshould not
touch the top of the tank.
 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,the frontofthetankshould justabout
touch the back of the firewall.
Vent tube Fuel pick- up tube
Fuelfilltube
( not included)
Silicon tube
 3) Carefully bend the second nylon tube
up at a 45 degree angle (using a cigarette
lighter). This tube will be the vent tube to the
muffler.
INSTALLING THE STOPPER ASSEMBLY
FUEL TANK.
 4) Carefully bendthethirdnylontube down
ata 45degreeangle (usingacigarettelighter).
This tubewill bevent tubeto thefuelingvalve.
 1) The stopper has been pre-assembled
at the factory.
 2) Using a modeling knife, cut one length
ofsilicon fuelline(thelengthofsiliconfuel line
iscalculatedbyhowtheweightedclunkshould
restabout 8mmaway fromtherearofthetank
andmove freelyinside thetank). Connectone
end of the line to the weighted clunk and the
otherend tothenylonpickuptubein thestop-
per.
Secure

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WESTLAND WYVERN - Item code:BH105 INSTRUCTION MANUAL.
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
FuelTank
Secure.
Remove
covering
Left side.
Bottomside.

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WESTLAND WYVERN - Item code:BH105 INSTRUCTION MANUAL.
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. Hold the cowl firmly in place using
pieces of masking tape.
3. Slide the cowl back over the engine
andsecure itin placeusing fourwood screws.
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.
Bottom side.
Trim and cut
Secure.
COWLING.
Secure.
 1. Slide the fiberglass cowl over the en-
gineand lineup thebackedgeofthe cowlwith
the marks you made on the fuselage.
Top side.
Bottom side.
3x 15mm
Drill 2.5mm
hole.

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WESTLAND WYVERN - Item code:BH105 INSTRUCTION MANUAL.
Secure
Drill 2.5mm
hole.
Drill 2.5mm
hole.
Drill 2.5mm
hole.
Secure
Secure
Secure
Markpoint.
Mark point.
65mm.

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WESTLAND WYVERN - Item code:BH105 INSTRUCTION MANUAL.
3x12mm
Secure
Drill 2.5mm
hole.
Secure.
Markpoint.
Drill 2.5mm
hole.
Mark point.
65mm.
Markpoint.
65mm.
Markpoint.
Markpoint