SPECIFICATION
Wingspan : 1,000 mm 39.37 in.
Length : 860 mm 33.86 in.
Weight : 1,4 kg 3.08 Lbs.
Radio : 04 channels.
Servo : 04 mini servos.
Motor : KMS 2820/05.
Battery : 3 Cells-Li-Poly-1 1.1V 2.200 mAh.
S peed control: 40A.
Propeller: 10 x 10.
Instruction Manual book
Made in Vietnam.
MIDGET MUSTANG-EP - Item code: BH81 . Instruction Manual
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This instruction manual is designed to help you build a great flying aeroplane. Please read this
manual thoroughly before starting assembly of your MIDGET MUSTANG - EP. 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.
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.
Some more parts.
HARDWARE PACK
COWLING.
Landing gear.....
T o 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.
Please trial fit all the parts. Make sure you have
the correct parts and that they fit and are aligned
properly before gluing! This will assure proper
assembly.
MIDGET MUST ANG-EPIARF 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.
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-
installed rudder.
(1) Horizontal stabilizer with pre-
installed elevator halves.
SUGGESTION.
NOTE.
MIDGET MUSTANG-EP - Item code: BH81 INSTRUCTION MANUAL
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+ 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.
SAFETY PRECAUTION.
REPLACEMENT LARGE PARTS
B. Wing panel.
C. Fuselage.
A. Cowling.
D . Horizon stabilizer.
F. Aluminium wing dihedral brace.
E. Vertical stabilizer .
REPLACEMENT SMALL PARTS
A.
B.
B.
C.
D.
E.
F.
1) Install the rubber grommets and brass
eyelets onto the aileron servos.
1.INSTALLING THE AILERON SERVOS.
I. AILERON.
1. Spinner .
2. Wheel spat.
3. Wheels
4. Gear set.
5.Plastic part gear set.
1.
2.
3.
2.
5.
4.
Top side
Aileron
Bottom side
MIDGET MUSTANG-EP - Item code: BH81 . Instruction Manual
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2) Using a modeling knife, remove the cov-
ering at possition show below.
Remove
covering
4) Drill 1,6mm pilot holes through the block
of wood for each of the four mounting screws
provided with the servo.
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.
5. Instal servo tray with aileron servo into
the wing as same as picture below.
Secure
C/A glue
C/A glue
C/A glue
Bottom side
Bottom side
Electric wire
thread
C/A glue
MIDGET MUSTANG-EP - Item code: BH81 INSTRUCTION MANUAL
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Bottom side
Secure
1) Using a ruler & pen to draw a straight
line as below picture.
2) Insert aileron control horn to the aileron.
3) Drill two 2mm holes through the aileron
using the control horn as a guide and screw
the control horn in place.
2x10mm.
Pen.
2mm X 12mm.
INSTALLING THE AILERON
CONTROL HORN.
Straitgh line.
Secure.
Drill 2mm
hole
MIDGET MUSTANG-EP - Item code: BH81 . Instruction Manual
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Repeat the procedure for the other wing
half.
Aileron pushrod.
Aileron pushrod.
INSTALLING THE AILERON
LINKAGES.
INSTALLING THE WING TIP
Epoxy glue.
Epoxy glue.
Repeat the procedure for the other wing
half.
Top side
Bottom side
C/A glue
MIDGET MUSTANG-EP - Item code: BH81 INSTRUCTION MANUAL
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PARTS REQUIRED
MAIN GEAR INSTALATION.
Remove covering
3 x 12mm
Mark point
Secure
MIDGET MUSTANG-EP - Item code: BH81 . Instruction Manual
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C/A glue
3 x 12mm
Drill 2mm
hole
Secure glue
Cut.
Cut
MIDGET MUSTANG-EP - Item code: BH81 INSTRUCTION MANUAL
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C/A glue
INSTALLING ELECTRIC MOTOR.
See pictures below:
Motor mount wood
3 x 15mm
Repeat the procedure for the other wing
half.
C/A glue.
MIDGET MUSTANG-EP - Item code: BH81 . Instruction Manual
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Epoxy glue.
Push
C/A glue.
Epoxy glue.
Secure.
Front view.
Right side
Rotor shaft
Motor
MIDGET MUSTANG-EP - Item code: BH81 INSTRUCTION MANUAL
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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.
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. Hold the cowl firmly in place using
pieces of masking tape.
3. Slide the cowl back over the engine
and secure it in place using four wood screws.
See picture below.
4. Install the muffler and muffler extension
onto the engine and make the cutout in the
cowl for muffler clearance. Connect the fuel
and pressure lines to the carburetor, muffler
and fuel filler valve.
3 x 12mm
Right side
Machine screw.
Right side
Left side
COWLING.
Left side
Install the spinner backplate, propeller and
spinner cone. The spinner cone is held in
place using two 3mm x 12mm wood screws.
3 x 12mm
INSTALLING THE SPINNER.
Bottom side.
MIDGET MUSTANG-EP - Item code: BH81 . Instruction Manual
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1. Install the rubber grommets and brass
collets into the elevator servo. Test fit the servo
into the servo tray .
2. Mount the servo to the tray using the
mounting screws provided with your radio system.
SERVO INSTALLATION.
ELEVATOR INSTALLATION.
C/A glue
C/A glue
HORIZONT AL ST ABILIZER.
See pictures below:
Secure.
Bottom side
Top side
MIDGET MUSTANG-EP - Item code: BH81 INSTRUCTION MANUAL
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C/A glue
C/A glue
1. Draw a center line onto the horizontal
stabilizer. Then slide the horizontal into the
fuselage.
C/A glue
2 Using a modeling knife, cut away the
covering from the fuselage for the stabilizer
and remove it.
Remove covering
3. Mark the shape of the vertical on the left
and right sides onto the horizontal stabilizer
using a felt-tip pen
Center line
4. Remove the stabilizer. Using the lines
you just drew as a guide, carefully remove the
covering from between them using a modeling
knife.
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 failure during flight
Bottom side
Mark line
Remove covering
MIDGET MUSTANG-EP - Item code: BH81 . Instruction Manual
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C/A glue
Elevator control horn install as same as the
way of aileron control horn. Please see pictures below.
ELEVATOR CONTROL HORN INSTALLA-
TION.
Mark point
2*12mm.
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
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 measurements 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.
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
rubbing alcohol.
C/A glue
C/A glue
Epoxy glue
MIDGET MUSTANG-EP - Item code: BH81 INSTRUCTION MANUAL
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Drill a hole 2mm
diameter.
Elevator and rudder pushrod install as same
as the way of aileron pushrod.
M2
M2 lock nut.
ELEVATOR PUSHROD INSTALLATION.
C/A glue.
T op side
Elevator
pushrod
Elevator
pushrod
Bottom side
Secure.
MIDGET MUSTANG-EP - Item code: BH81 . Instruction Manual
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Rudder servo install as same as method of
elevator servo. See picture below:
VERTICAL INSTALLATION.
C/A glue
Cut
Secure
Secure
C/A glue.
Elevator servo.
Secure
Elevator pushrod.
Elevator servo.
MIDGET MUSTANG-EP - Item code: BH81 INSTRUCTION MANUAL
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C/A glue
C/A glue
C/A glue
Remove covering.
1. Using a modeling knife cut away the
covering from the end of fuselage for the rudder hinge.
Hingle slot
Mark poin
3. Mark the shape of the vertical on the
left and right side of the rudder on to the horizontal stabilizer using a felt-tip pen.
2. Put the rudder into the fuselage as
same as picture below.
4. Now, remove the rudder and using a
modeling knife, carefully cut just inside the
marked lines and remove the film of the rudder. Just as you did with the horizontal stabilizer, make sure you only press hard enough
to cut the film, not the balsa rudder.
MIDGET MUSTANG-EP - Item code: BH81 . Instruction Manual
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5. Put the vertical stabilizer back in
place. Using a triangle, check to ensure
that the vertical stabilizer is aligned 90 degree to the horizontal stabilizer .
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 vertical 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
stabilizer in place with T -pins or masking tape.
Allow the epoxy to fully cure before proceeding.
Epoxy glue
Epoxy glue
Epoxy glue
C/A glue
C/A glue
C/A glue
Remove
covering
Also carefully remove the covering from
the horizontal fin as below the lines which
you drew as same picture below.
MIDGET MUSTANG-EP - Item code: BH81 INSTRUCTION MANUAL
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Rudder control horn install as same as the
way of aileron control horn. Please see pictures below.
RUDDER CONTROL HORN INSTALLA-
TION.
Mark point
Drill a hole
2mm diameter
M2
M2 lock nut.
Secure
Rudder pushrod install as same as the way
of aileron pushrod.
RUDDER PUSHROD INSTALLATION.
Rudder pushrod.
Rudder
control horn
MIDGET MUSTANG-EP - Item code: BH81 . Instruction Manual
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Tie wrap.
C/A glue
2. Wrap the receiver and battery pack in
the protective foam to protect them from vibration. Use a rubber band or masking tape to
hold the foam in place.
3. 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.
4. Using a 2mm drill bit, drill a hole through
the side of the fuselage, near the receiver,
for the antenna to exit.
INSTALLING THE RECEIVER AND BA TTERY.
1. Plug the servo leads and the switch
lead into the receiver. Y ou 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.
Tie wrap.
Battery
Elevator
pushrod.
Rudder
pushrod.
Elevator
pushrod.
Rudder
pushrod.
Elevator
pushrod.
C/A glue
Rudder servo.
MIDGET MUSTANG-EP - Item code: BH81 INSTRUCTION MANUAL
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Locate the aluminium wing dihedral brace.
WING A TT ACHMENT .
Battery
*** Test fit 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 fits properly.
Recever
See picture wing attach to fuselage.
WING ATTACHMENT.
Installing the fuselage hatch as same as picture below.
Wing bolt.
Wing bolt.
MIDGET MUSTANG-EP - Item code: BH81 . Instruction Manual
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1) It is critical that your airplane be bal-
anced correctly . Improper balance will cause
your plane to lose control and crash.
THE CENTER OF GRAVITY IS LOCATED
100MM BACK FROM THE LEADING EDGE
OF THE WING .
2) Mount the wing to the fuselage. Using a
couple of pieces of masking tape, place them
on the top side of the wing 100mm back from
the leading edge, at the fuselage sides.
Accurately mark the balance point on the top
of the wing on both sides of the fuselage. The
balance point is located 100mm back from
the leading edge. This is the balance point at
which your model should balance for your first
flights. Later, you may wish to experiment by
shifting the balance up to 10mm forward or
back to change the flying 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 difficult 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 fly), 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 receiver. If you are unable to obt ain
good balance by doing so, then it will be necessary to add weight to the nose or tail to
achieve the proper balance point.
3. Turn the airplane upside down. Place
your fingers on the masking tape and carefully lift the plane .
BALANCING.
Secure.
MIDGET MUSTANG-EP - Item code: BH81 INSTRUCTION MANUAL
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Ailerons : 12mm up 12mm down
Elevator : 12mm up 12mm down
Rudder : 20mm right 20mm left
1) We highly recommend setting up a
plane using the control throws listed.
2) The control throws should be meas-
ured at the widest point of each control surface.
3) Check to be sure the control surfaces
move in the correct directions.
CONTROL THROWS.
1) Completely charge your transmitter and
receiver batteries before your first day of flying.
2) Check every bolt and every glue joint in
your plane to ensure that everything is tight
and well bonded.
3) Double check the balance of the
airplane.
4) Check the control surface.
5) Check the receiver antenna . It should
be fully extended and not coiled up inside the
fuselage.
6) Properly balance the propeller.
We wish you many safe and enjoy-
able flights with your
MIDGET MUST ANG -EP.
PRE-FLIGHT CHECK.
Aileron control
12
12
12
12
20
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