arf P-51 MUSTANG User manual

Instruction Manual book
SPECIFICATION


Wingspan : 2,050mm 80.71 in.


Length : 1,840 mm 72.41 in.


Weight : 6.8kg 14.96 Lbs.


Radio : 07 channels.


Servo : 09 servos.


Engine: O.S GT 33 CC gas.
MadeinVietnam.
ITEM CODE:BH 140

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P-51 MUSTANG Item code: BH140 . Instruction Manual
This instruction manual is designed to help you build a great flying aeroplane. Please read this
manualthoroughlybeforestarting assemblyof yourP-51-MUSTANG. Use theparts listingbelow
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
proceduresdesignedto helpthe newpilot onhiswayto successfulR/C flight.Theywillalsobeable
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.....
Toavoidscratching your newairplane,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. Keepa coupleof
jars or bowls handy to hold the small parts af-
ter you open the bag.
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.
Pleasetrialfit allthe parts.Makesureyouhave
the correct parts and that they fit and are
alignedproperly beforegluing!This willassure
proper assembly.P-51 MUSTANG ARF is
handmadefrom naturalmaterials,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.Do notlet thesechemi-
cals come in contact with the colors on the
covering and the plastic parts.

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P-51 MUSTANG Item code: BH140 . Instruction Manual
Caution:
this model is not a toy!
Ifyou are abeginner tothis typeof powered model,please askan experiencedmodel flyerforhelp
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
youhave to carryout isimportant and mustbe donecarefully.The modelwillonly 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.
SAFETY PRECAUTION.
+ 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 pro-
peller.

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P-51 MUSTANG Item code: BH140 . Instruction Manual
REPLACEMENT LARGE PARTS
1.Air Retract main gear.
2.Door mounting wheel 4.Bomb tray 5. Wheels 6.Antenna.
3. Plastic bomb.
REPLACEMENT SMALL PARTS
3x20mm
F2.Aluminium tube Horizontal stabilizer.
E. Rudder.
F1.Aluminium tube wing dihedral brace.
G. Decal sheet.
A. Cowling.
B. Wing panel(B1,B2).
C Fuselage.
D.Horizontal stabilizer(D1,D2).
KK.Pilot
G

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P-51 MUSTANG Item code: BH140 . Instruction Manual
1) Install the rubber grommets and brass
eyelets onto the aileron servos.
I. AILERON.
1.INSTALLING THE AILERON SERVOS.
2)Using amodeling knife,removethe cov-
ering at possition show below.
Aileron
Remove
covering
Servo tray.
Secure.
Top side
10.Fueltank
8.Air tank.
11.3 way connector.
9.Air line sets.
12.Valveone way.
13.Valve control.
15.Batterytray.
16.Tailgear set.
14.Spinner
bottom side.
Flap Aileron
Servotray.
Servotray.
17.Gunsetfor wing
7.Plastic parts for bottom fuselage.

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P-51 MUSTANG Item code: BH140 . Instruction Manual
Repeat the procedure for the other wing
half.
Aileroncontrolhorn
5. Instal servo tray with aileron servo into
the wing as same as picture below.
2x10mm.
Installing the aileron linkages as pictures
below.
INSTALLING THEAILERON CONTROLHORN.
thread
Electric
wire.
Secure.
A+B Epoxy
PLUS glue
Aileron
control horn
INSTALLING THE AILERON
LINKAGES.
60mm. 3x10mm.
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.
4)Drill 1,6mmpilot holesthrough theblock
of wood for each of the four mounting screws
provided with the servo.

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P-51 MUSTANG Item code: BH140 . Instruction Manual
Repeat the procedure for the other wing
half.
2x10mm.
Secure
Bottom side
servo
tray.
Secure.
II. FLAP
1.INSTALLING THE FLAP SERVO
Flap.
Bottom side

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P-51 MUSTANG Item code: BH140 . Instruction Manual
Installflapcontrol hornassame as
picturebelow.
ControlhornFlap.
2.INSTALLING THE FLAP
CONTROL HORN.
Repeat the procedure for the other wing
half.
A+B Epoxy
PLUS glue
Control horn
of the flap.
Installing the flap linkages as pictures
below.
Secure.
Bottom side.
3.INSTALLING THE FLAP
LINKAGES.
60mm 3x10mm.

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P-51 MUSTANG Item code: BH140 . Instruction Manual
PARTSREQUIRED
INSTALLING AIR RETRACTABLE
LANDING GEAR.
5x45mm. 5x45mm.
3x15mm.
spring
spring
Drill a hole 3mm
diameter

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P-51 MUSTANG Item code: BH140 . Instruction Manual
Secure.
3x15mm.
5x45mm.

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P-51 MUSTANG Item code: BH140 . Instruction Manual
Secure.
3x10mm. 3x6mm.
Secure
3x6mm.
Drill a hole
2mm
Secure
3x10mm.

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P-51 MUSTANG Item code: BH140 . Instruction Manual
Bottom side.
Flap Aileron.
Installing plastic parts for bomb
wing.
Secure.
Secure.
Secure.
3x 15mm
3x20mm.

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P-51 MUSTANG Item code: BH140 . Instruction Manual
Repeat the procedure for the other wing
half.
Bottom side
INSTALLING THE ENGINE MOUNT.
See pictures below:
Drill a hole
6mmdiameter
Frontview.
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.
INSTALLING THE ENGINE.
5x70mm
INSTALLING THE THROTTLE PUSHROD.
Secure.

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P-51 MUSTANG Item code: BH140 . Instruction Manual
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.
Left side.
Secure.
Throttleservo.
Throttleservo.
Throttle pushrod.
INSTALLING THE STOPPER ASSEMBLY
1) The stopper has been pre-assembled
at the factory.
2) Using a modeling knife, cut one length
ofsilicon fuelline (thelength ofsilicon fuelline
iscalculatedby howtheweightedclunk should
restabout 8mmaway fromthe rearof thetank
andmove freelyinside thetank). Connectone
end of the line to the weighted clunk and the
otherend tothe nylonpick uptube inthe stop-
per.
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.
4) Carefullybendthe thirdnylontube down
ata45degree angle(usinga cigarettelighter).
This tubewill beventtube tothe fuelingvalve.
FUEL TANK.
Throttle pushrod.
Cut

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P-51 MUSTANG Item code: BH140 . 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
thestopperassemblytightenthe 3mmx 20mm
machine screw until the rubber stopper ex-
pandsand sealsthetankopening.Donotover
tighten the assembly as this could cause the
tank to split.
When the stopper assembly is installed in the
tank, the top of the vent tube should rest just
belowthe topsurface ofthe tank.It shouldnot
touch the top of the tank.
Tygon gas tubing not included.
Vent tube Fuel pick- up tube
Fuelfilltube
9) To securethe fuel tankin place,apply a
bead of silicon sealer to the forward area of
thetank, whereitexits thefuselagebehind the
enginemountingboxand totherearofthe tank
at the forward bulkhead.
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
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
fueltankcompartment.Airshouldflowthrough
easily.
Secure.
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 frontofthe tankshouldjust about
touch the back of the firewall.

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P-51 MUSTANG Item code: BH140 . Instruction Manual
1. Slide the fiberglass cowl over the en-
gineand lineupthe backedge ofthecowl with
the marks you made on the fuselage.
COWLING.
2. While keeping the back edge of the
cowl flush with the marks, align the front of
thecowlwith thecrankshaftofthe 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.
Fueltank.
Pushrod Choke.
Leftside
Pushrod
Choke.
Pushrod
Choke.
Top side

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P-51 MUSTANG Item code: BH140 . Instruction Manual
Bottom side
3. Slide the cowl back over the engine
andsecure itin placeusing fourwood screws.
Trim and cut
3x 12mm
Bottom side
Secure.
Secure.
Right side.
Left side.

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P-51 MUSTANG Item code: BH140 . Instruction Manual
INSTALLING THE SPINNER.
Installthe spinnerbackplate,propeller and
spinner cone. The spinner cone is held in
placeusing two3mm x8mmmachine screws.
Frontview.
Aluminium 10mm
5x50mm.
Secure
Secure.

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P-51 MUSTANG Item code: BH140 . Instruction Manual
INSTALLING THE ELEVATOR
SERVOS.
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.
12mm
300 mm
Aluminium
Elevator
servo
Elevator servo
Elevator servo
HORIZONTAL STABILIZER.
Horizontal stabilizer installation
See picture below.
Right side
PUSH
Lefthorizontal
stabilizer
Right horizontal
stabilizer
Bottomside

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P-51 MUSTANG Item code: BH140 . Instruction Manual
 Elevatorpushrod installas sameas theway
of aileron pushrod.
ELEVATOR PUSHROD INSTALLATION.
Elevator control horn install as same as the
way of aileron control horn. Please see pic-
tures below.
ELEVATOR CONTROL HORN
INSTALLATION.
Bottom side.
Bottom side
4x15mm
Secure
A+B Epoxy
PLus glue
Elevator
control horn
M2
M2 lock nut.