Black Horse Model Mustang P51 Owner's manual

Instruction Manual Book
Made in Vietnam.
Item code: BH33-B.
- Wingspan: 1,560mm (61.42in).
- Length: 1,360mm (53.54in.)
- Weight: 4kg (8.8lbs).
- Wing area: 46.2dm2.
- Wing loading: 86.6g/dm2.
- Wing type: Naca Airfoil.
- Gear type: Air retract gear
with oleo struts (included).
- Spinner: 80mm.
- Servo mount: 42mm x 21mm.
SPECIFICATION
Parts listing required (not included):
- Radio: 06 channels.
- Servo: 08 servos.
- Engine: 61-75 2 strokes; 15cc Gas.
- Motor: Brushless outrunner 1200-2200W, 650KV.
- Propeller: Suit with your engine.
Recommended Motor and Battery set up
(not included):
- Motor: RIMFIRE.60.
- Lipo cell: 6 cells 4,000-5,000mAh.
- Receiver battery: 6V/ 1200-2000mAh NiMH.
- ESC: 80A.
ALL BALSA - PLY WOOD CONSTRUCTION.
COVERED WITH ORACOVER.

. Item code: BH33-B. Instruction Manual
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1 Some more parts.
1 HARDWARE PACK
1 COWLING.
1 Landing gear.....
This instruction manual is designed to help you build a great  ying aeroplane. Please read this manual thoroughly
before starting assembly of your . Use the parts listing below to identify all parts.
Please trial fit all the parts. Make sure you have
the correct parts and that they  t and are aligned
properly before gluing! This will assure proper
assembly. . ARF is hand made
from natural materials, every plane is unique
and minor adjustments may have to be made.
However, you should find the fit superior 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 following: paint thinner, C/A
glue accelerator, C/A glue debonder and acetone. Do
not let these chemicals come in contact with the colors
on the covering and the plastic parts.
FUSELAGE ASSEMBLY
1 (1) Fuselage.
WING ASSEMBLY
1 (1) Right wing half with pre-installed aileron.
1 (1) Left wing half with pre-installed aileron.
TAIL SECTION ASSEMBLY
1 (1) Vertical stabilizer with pre-installed rudder.
1 (1) Horizontal stabilizer with pre-installed
elevator halves.
To avoid scratching your new 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 aircraft and to protect
the table. Keep a couple of jars or bowls handy to hold
the small parts after you open the bag.
SUGGESTION
NOTE
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  ight 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  ight. They will also be able to advise on any insurance and safety regulations
that may apply.
WARNING
1 Thick cyanoacrylate glue.
1 30 minute epoxy.
1 5 minute epoxy.
1 Hand or electric drill.
1 Assorted drill bits.
1 Modelling knife.
1 Straight edge ruler.
1 2mm ball driver.
1 Phillips head screwdriver.
1 220 grit sandpaper.
1 90° square or builder’s triangle.
1 Wire cutters.
1 Masking tape & T-pins.
1 Thread-lock.
1 Paper towels.
TOOLS & SUPPLIES NEEDED
PARTS LISTING

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This model is highly pre-fabricated and can be built in
a very short time. However, the work which you have to
carry out is important and must be done carefully. The
model will only be strong and  y 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  t the screw.
Caution: This model is not a toy!
If you are a beginner to this type of powered model,
please ask an experienced model  yer for help 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 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  lm covering
Minor creases or bubbles may develop in the  lm
covering due to major  uctuations in weather conditions
(temperature, humidity etc.); in rare cases you may
even  nd a slight warp in a component. These minor
faults are in the nature of  lm-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 wrap: Hold the panel twisted gently in
the opposite direction to the wrap,and
apply warm air to remove the creases
from the covering.
Caution! do not heat the  lm more than is absolutely
necessary. If the air or the iron is too hot, the  lm may
melt and holes may be formed.
+ This is not a toy.
+ Be sure that no other  yers 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  ip the propeller with your  ngers.
+ 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
REPLACEMENT LARGE PARTS
B1
C
B2
F
E
D
A
A: Fuselage - Vertical stab..
B: Wing panel (B1, B2).
C: Horizontal stabilizer.
D: Rudder.
E: Aluminium tube wing dihedral brace.
F: Cowling.
G: Cockpit fuselage.
G
G1
G3 G2

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1. INSTALLING THE AILERONS
I. AILERON
Assemble then apply drops of thin
C/A to center of hinge,on both sides.
Temporary pin to
keep hinge centered.
Test  t the ailerons to the wing with the hinges. If the
hinges don’t remain centered, stick a pin through the
middle of the hinge to hold it in position.
REPLACEMENT SMALL PARTS
Bottom side.
See pictures below:
1. Door mounting wheel.
2. Retract main gear.
3. Wheels.
4. Tail gear set.
5. Plastic - engine mount.
6. Wood - motor mount.
7. Spinner.
8. Fuel Tank.
8a. Clunk.
8b. Stopper (three line).
9. Valve control.
10. 3 way connector.
11. Valve one way.
12. Air line sets.
13. Air tank.
7
3x12mm
4x20mm
4x70mm 6
2x10mm 910
11
12 13
1
1
3x6mm 3x4mm
3x15mm
5x35mm
2
2
33
4x30mm
5
4
3x12mm
8a
8b
M2

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1 4) Place the servo into the servo tray. Center
the servo within the tray and drill 1.5mm pilot holes
through the block of wood for each of the four mount-
ing screws provided with the servo.
Drill a hole
1.5mm
2x10mm
Secure
1 5) Repeat the procedure to install the aileron servos
in the opposite wing half.
1 1) Remove the covering from the slot on the bot-
tom of the aileron.
1 2) Insert the control horn into the slot and secure
it by A+B Epoxy glue.
2. INSTALLING THE AILERON SERVOS
1 1) Install the rubber grommets and brass
eyelets on to the aileron servos.
1 2) Us i n g a mo d eling knife, rem ove the
covering from over the pre-cut servo arm exit hole on
the aileron servo tray / hatch. This hole will allow the
servo arm to pass through when installing the aileron
pushrods.
1 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, remove the masking tape and
the servo lead from the thread.
Drill a hole
1.5mm
Servo tray
Remove the covering
Secure
Electric wire
Electric wire
1. A+B Epoxy glue
2. Push in
Aileron
control horn

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4. INSTALLING THE AILERON LINKAGES
Installing the aileron linkages as pictures below.
100mm
Snap keeper.
M2 lock nut
Repeat the procedure to install the second aileron
linkages in the opposite wing half.
After both linkages are completed. connect both of
the aileron servo loads using a Y-harness you have
purchased.
Using pliers, carefully make a 90 degree bend down at
the mark made. Cut off the excess wire, leaving about
6mm beyond the blend.
Insert the 90 degree bend down through the hole in the
control horn. Install one nylon snap keeper over the
wire to secure it to the control horn. Install the control
horn retaining screw and remove the masking tape
from the aileron.
II. INSTALLING THE FLAP
Flap install as same as the way of aileron. Repeat
step #1 - #4 on the part I to install the  ap.
1 3) Repeat the procedure to install the control horn
on the opposite aileron.
Flaslink
Pushrod wire Control horn
Bend and cut.
Silicone Tube
III. INSTALLING AIR RETRACTABLE
LANDING GEAR
Place the retract to the wing and pull out the air tube
through the wing section.
Install the tube to the air retract.
PARTS REQUIRED
3x6mm 3x4mm
3x15mm
5x35mm
Push in

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5x35mm
Secure
Collar
Repeat the procedure to install the opposite gear.
Install and secure the wheel.
Secure the air retract to the wing.
Bottom side Top side
Drill a hole
3mm diameter
See pictures below:
IV. INSTALLING THE ENGINE MOUNT
There are two options:
1. Electric motor
2. Engine mount.
3x6mm
Secure
3x4mm
Secure
3x15mm
Secure

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Locate the long piece of wire used for the throttle
pushrod. One end of the wire has been pre-bend in to a
“Z” bend at the factory. This “Z” bend should be inserted
into the throttle arm of the engine when the engine is
 tted onto the engine mount. Fit the engine to the engine
mount using the screws provided.
OPTION 1: ELECTRIC MOTOR OPTION 2: ENGINE MOUNT
1. INSTALLING THE STOPPER ASSEMBLY
1 1) The stopper has been pre-assembled at the
factory.
1 2) Using a modeling knife, cut one length of silicon
fuel line (the length of silicon fuel line is calculated by
how the weighted clunk should rest about 8mm away
V. FUEL TANK,
SERVOS INSTALLATION
4x70mm
4x20mm
4x30mm
See pictures below:
125mm

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2.INSTALLING THE FUSELAGE SERVOS
1 1) Install the rubber grommets and brass collets
into the elevator, rudder and throttle servos. Test  t
the servos into the servo tray. Trim the tray if neces-
sary to  t your servos.
1 2) Mount the servo to the tray using the mounting
screws provided with your radio system.
1 5) Test  t the stopper assembly into the tank. It may
be necessary to remove some of the  ashing around
the tank opening using a modeling knife. If  ashing is
present, make sure none of it falls into the tank.
1 6) When satis ed with the alignment of the stopper
assembly tighten the 3mm x 20mm machine screw until
the rubber stopper expands and seals the tank opening.
Do not over tighten the assembly as this could cause
the tank to split.
1 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.
1 8) Feed three lines through the fuel tank compart-
ment and through the pre-drilled hole in the  rewall. 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 front of the tank should just about touch
the back of the  rewall.
Blow through one of the lines to ensure the fuel
Fuel tank
Tie wrap
Throttle servo Rudder servo
Elevator servo
Valve control servo
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 accommo-
date the servo connector. Remove the excess material
from the arm.
After installing the adjustable metal connector apply
a small drop of thin C/A to the bottom nut. This will
prevent the connector from loosening during  ight.
3. INSTALLING THE THROTTLE PUSHROD
from the rear of the tank and move freely inside the
tank). Connect one end of the line to the weighted
clunk and the other end to the nylon pick up tube in
the stopper.
1 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 muf er.
1 4) Carefully bend the third nylon tube down at a 45
degree angle (using a cigarette lighter). This tube will
be vent tube to the fueling valve.
When the stopper assembly is installed in the tank, the
top of the vent tube should rest just below the top sur-
face of the tank. It should not touch the top of the tank.
lines have not become kinked inside the fuel tank
compartment. Air should  ow through easily.
1 9) To secure the fuel tank in place, apply a bead of
silicon sealer to the forward area of the tank, where it
exits the fuselage behind the engine mounting box and
to the rear of the tank at the forward bulkhead.
Do not secure the tank into place permanently until after
balancing the airplane. You may need to remove the
tank to mount the battery in the fuel tank compartment.

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Pushrod wire
VI. COWLING
1 1) Slide the  berglass cowl over the engine and
line up the back edge of the cowl with the marks you
made on the fuselage.
1 2) While keeping the back edge of the cowl  ush
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
Drill four 2.5mm pilot holes through both the cowl and
the side edges of the  rewall. Using a 3mm drill bit,
enlarge the four holes in the cowling.
1 1) Elevator install as same as the way of aileron.
Please see pictures below.
1 2) Using a modeling knife, carefully remove the  lm
covering from the tail slots at the rear of the fuselage.
Make sure that you do not remove any wood from the
slots as this will affect the alignment of the tail.
Throttle servo
Connector
Servo arm
Secure
Cut
Throttle pushrod
of the cowl opening. Hold the cowl  rmly in place using
pieces of masking tape.
1 3) Slide the cowl back over the engine and secure
it in place using four wood screws. See picture below.
1 4) Install the muf er and muf er extension onto
the engine and make the cutout in the cowl for muf er
clearance. Connect the fuel and pressure lines to the
carburetor, muf er and fuel  ller valve.
Pushrod wire
Cowl area cutout
for engine head.
Cowl area cutout
for muf er
3x12mm
Secure
Drill a hole
2.5mm

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1 3) Draw a center line onto the horizontal stabilizer.
Then put the horizontal into the fuselage.
B B
A A
1 4) Check the  t of the horizontal stabilizer in its
slot. Make sure the horizontal stabilizer is square and
centered to the fuselage by taking measurements, but
don’t glue anything yet.
Check to mark sure the wing and stabilizer are
paralell. If they are not, lightly sand the opening
in the fuselage for the stabilizer until the stabilizer
is paralell to the wing, but don’t glue anything yet.
A A
A = A
1 5) With the horizontal stabilizer correctly aligned,
mark the shape of the fuselage on the top and the
bottom of the tail plane using a water soluble / non
permanent felt-tip pen.
1 6) Remove the stabilizer. Using a modeling knife
and ruler CAREFULLY cut 1mm inside the marked
lines. Remove the covering from the top and the
bottom of the tail plane.
Make sure you only cut with enough pressure to only
cut through the  lm and not the wood. Cutting into
the balsa structure may weaken it. This could lead to
possible failure during  ight.
1. ELEVATOR CONTROL HORN
INSTALLATION
Trim the covering
from the tail slots.
Elevator control horn install as same as the way of
aileron control horn. Please see pictures below.
Center line
Push in
Mark line
Top side
Top side and
bottom side. Remove
the covering.
Bottom side.
control horn
1. A+B Epoxy glue
2. Push in

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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. Slide the stabilizer in
place 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 stabilizer in place with T-pins or
masking tape.
2. ELEVATOR PUSHROD INSTALLATION
1 1) Using pliers, carefully make a 90 degree bend
down at the mark made. Cut off the excess wire, leaving
about 6mm beyond the blend.
1 2) Insert the 90 degree bend down through the
hole in the servo arm. Install one nylon snap keeper
over the wire to secure it to the arm. Install the servo
arm retaining screw.
VIII. THE TAIL WHEEL BRACKET,
RUDDER INSTALLATION
Rudder install as same as the way of aileron.
A/B Epoxy glue
Elevator control horn
Drill a hole
1.5 mm
Top side
C/A glue.
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  ll
in any gaps that may exits that were not  lled previ-
ously and clean up the excess using a paper towel and
rubbing alcohol.
M2 Lock nut
M2
Elevator pushrod
Bottom side.
Silicone Tube
Secure.
Flaslink
Pushrod wire
servo arm
Snap keeper
Elevator servo
Cut.
Bend
Elevator pushrod
Secure.

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1. RUDDER CONTROL HORN INSTALLATION
Rudder control horn install as same as method of
elevator control horn.
3. RUDDER PUSHROD INSTALLATION
Rudder pushrod install as same as the way of elevator
pushrod. Please see pictures below.
2. MOUNTING THE TAIL WHEEL BRACKET
1 1) Set the tail wheel assembly in place on the ply-
wood plate. The pivot point of the tail wheel wire should
be even with the rudder hinge line and the tail wheel
bracket should be centered on the plywood plate.
Control horn
1 2. Secure the tail wheel bracket in place using
three 3mm x 12mm wood screws. Be careful not to
overtighten the screws.
3 x 12mm
Rudder pushrod
Secure
Push in

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3 way conector
Valve one way
Valve control
Connector
Left main
gear wing
Air supply Air tank
Right main
gear wing
Valve control servo
Valve control
IX. INSTALLING VALVE CONTROL
Secure
Rudder pushrod
Rudder pushrod
Rudder
control horn
M2 Lock nut
M2
C/A glue.
Flaslink
Pushrod wire
Servo arm
Rudder pushrod
Rudder servo
Snap keeper
Using pliers, carefully make a 90 degree bend down at
the mark made. Cut off the excess wire, leaving about
6mm beyond the blend. Insert the 90 degree bend down
through the hole in the servo arm. Install one nylon snap
keeper over the wire to secure it to the arm. Install the
servo arm retaining screw.

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Locate the aluminium wing dihedral brace.
XI. WING ATTACHMENT
*** Test  t the aluminium tube dihedral brace into each
wing haft. The brace should slide in easily. If not, use
220 grit sand around the edges and ends of the brace
until it  ts properly.
Attach the aluminium tube into the fuselage.
336mm
Aluminium tube. 19mm.
Insert the wing panel as pictures below.
1 1) Cut out the switch hole using a modeling knife.
Use a 2mm drill bit and drill out the two mounting holes
through the fuselage side.
1 2) Secure the switch in place using the two machine
screws provided with the radio system.
1 3) Plug the servo leads and the switch lead into
the receiver. You may want to plug an aileron extension
into the receiver to make plugging in the aileron servo
lead easier when you are installing the wing. Plug the
battery pack lead into the switch.
1 4) Wrap the receiver and battery pack in the protec-
tive foam to protect them from vibration. Use a rubber
band or masking tape to hold the foam in place.
1 5) Position the battery pack and receiver behind
the fuel tank. Use two tie wraps to hold the battery and
receiver securely in place as pictures below.
Do not permanently secure the receiver and battery
until after balancing the model.
1 6) Using a 2mm drill bit, drill a hole through the side
of the fuselage, near the receiver, for the antenna to exit.
X. INSTALLING THE SWITCH,
RECEIVER AND BATTERY
Push in
Push in
Push in
Connector
Servo arm
Cut.
Secure.
Battery receiver.

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Screw the wing panel in position.
XII. INSTALLING COCKPIT
FUSELAGE, PROPELLERS
Please see pictures below.
Installing the fuselage hatch as same as picture below.
Position the canopy so the rear frame on the canopy is
aligned with the rear edge of the cockpit opening. Use
canopy glue to secure the canopy to the canopy hatch.
Use low-tack tape to hold the canopy in position until
the glue fully cures. Wrap the tape completely around
the canopy hatch, as the tape does not stick well to
the covering. We used balsa sticks to hold the lower
edges of the canopy tightly against the canopy hatch.
Secure
Secure
A/B Epoxy glue.
Open and
Close
Push in
Install the spinner backplate, propeller and spinner
cone. The spinner cone is held in place using two 3mm
x 8 mm machine screws.
XIII. INSTALLING THE SPINNER

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1 1) We highly recommend setting up a plane using
the control throws listed.
1 2) The control throws should be measured at the
widest point of each control surface.
1 3) Check to be sure the control surfaces move in
the correct directions.
Ailerons : 15mm up 15mm down
Flap : 25mm down.
Elevator : 15mm up 15mm down
Rudder : 35mm right 35mm left
CONTROL THROWS
1 1) Completely charge your transmitter and receiver
batteries before your  rst day of  ying.
1 2) Check every bolt and every glue joint in your
plane to ensure that everything is tight and well bonded.
1 3) Double check the balance of the airplane.
1 4) Check the control surface.
1 5) Check the receiver antenna. It should be fully
extended and not coiled up inside the fuselage.
1 6) Properly balance the propeller.
We wish you many safe and enjoyable  ights
with your .
PRE-FLIGHT CHECK
15mm
15mm
25mm
15mm
15mm
35mm
35mm
Flap control
Aileron control
Elevator control
Rudder control
137mm
CG
BALANCING
1 1) It is critical that your airplane be balanced cor-
rectly. Improper balance will cause your plane to lose
control and crash.
THE CENTER OF GRAVITY IS LOCATED
137MM BACK FROM THE LEADING EDGE OF THE
WING.
1 2) Mount the wing to the fuselage. Using a couple
of pieces of masking tape, place them on the top side
of the wing 137mm back from the leading edge, at the
fuselage sides.
1 3) Turn the airplane upside down. Place your  ngers
on the masking tape and carefully lift the plane.
Accurately mark the balance point on the top of the
wing on both sides of the fuselage. The balance point
is located 137mm back from the leading edge. This is
the balance point at which your model should balance
for your  rst  ights. Later, you may wish to experiment
by shifting the balance up to 10mm forward or back to
change the  ying characteristics. Moving the balance
forward may improve the smoothness and arrow- like
tracking, but it may then require more speed for take
off and make it more dif cult to slow down for landing.
Moving the balance aft makes the model more agile
with a lighter and snappier ”feel”. In any case, please
start at the location we recommend.
With the wing attached to the fuselage, all parts of the
model installed (ready to  y), and empty fuel tanks,
hold the model at the marked balance point with the
stabilizer level.
Lift the model. If the tail drops when you lift, the model
is “tail heavy” and you must add weigh* to the nose. If
the nose drops, it is “nose heavy” and you must add
weight* to the tail to balance.
*If possible, first attempt to balance the model by
changing the position of the receiver battery and re-
ceiver. If you are unable to obtain good balance by
doing so, then it will be necessary to add weight to
the nose or tail to achieve the proper balance point.

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NEVER  y in wet conditions or on
windy or stormy days.
I/C FLINGT WARNINGS
THE PROPELLER IS DANGEROUS.
Keep  ngers, clothing (ties, shirt
sleeves, scarves) or any other loose
objects that could be caught or
drawn in, away from the propeller.
Take care at ALL times.
NEVER use damaged or deformed
propellers or spinners.
DO NOT dispose of empty fuel
containers on a  re, this can lead to
an explosion.
Keep all onlookers (especially small
children and animals) well back
from the area of operation. This is
a  ying aircraft, which will cause
serious injury in case of impact with
a person or animal.
NEVER  y near power lines,
aerials or other dangerous areas
including airports, motorways etc.
ALWAYS adjust the engine from
behind the propeller, and do not
allow any part of your body to be in
line with the propeller.
Always operate in open areas, away
from factories, hospitals, schools,
buildings and houses etc. NEVER
 y your aircraft close to people or
built up areas.