Black Horce Model P-40C TOMAHAWK Owner's manual

SPECIFICATION


Wingspan : 1,660 mm 65.35 in.


Length : 1,420 mm 55.91 in.


Weight : 3.8 kg 8.36 Lbs.


Radio : 06 channels.


Servo : 08 servos.


Engine : 75 Cu.in 2 Stroke.
91 Cu.in 4 Stroke.
Instruction Manual book
MadeinVietnam.
ITEMCODE:BH56.

2
P-40C TOMAHAWK.
This instruction manual is designed to help you build a great flying aeroplane. Please read this
manualthoroughlybeforestartingassemblyofyourP-40CTOMAHAWK.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
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
proper assembly. P-40C TOMAHAWK 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.
Some more parts........
Tail section assembly
(1) Vertical stabilizer with pre-
installedrudder.
(1) Horizontal stabilizer with pre-
installedelevator halves.
SUGGESTION.
NOTE.

3
P-40C TOMAHAWK.
+ 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.
+Theglowplug clipmustbesecurely attached
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 standinlinewiththesideof thepropel-
ler.
+ Make engine adjustments from behind the
propeller only. Do not reach around the spin-
ningpropeller.
SAFETY PRECAUTION.
Caution: this model is not a toy!
If you are a beginner to this type of powered
model,please askan experiencedmodelflyer
forhelp andsupport.Ifyouattempttooperate
themodel withoutknowingwhat youaredoing
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
Evenifyou havealready built alarge number
ofRC modelspleaseread rightthrough 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: Blowwarm airoverthearea
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
bebuilt inavery shorttime.However,the work
which you have to carry out is important and
must be done carefully. The model will only
be strong and fly 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.
A. Wing panel.
C. Fuselage. B. Cowling.
REPLACEMENT LARGE PARTS
REPLACEMENT SMALL PARTS
D. Horizontal stabilizer.
F. Aluminium wing dihedral brace.
G. Decal sheet.
E. Vertical stabilizer
A
B
C
F
E
G
D
A
1. Fuselage top hatch.
2
1
2. Fairings.

4
P-40C TOMAHAWK.
1) Install the rubber grommets and brass
eyelets onto the aileron servos.
INSTALLING THE AILERON SERVOS.
Bottom of wing
C/Aglue
C/Aglue
C/Aglue
C/Aglue
C/Aglue

5
P-40C TOMAHAWK.
4)Drill 1,6mmpilot holesthroughtheblock
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, re-
move the masking tape and the servo lead
from the thread.
2)Using amodeling knife,remove thecov-
ering at possition show below.
C/Aglue
C/Aglue
C/Aglue
Remove
covering.

6
P-40C TOMAHAWK.
INSTALLING THEAILERON CONTROL HORN.
Aileron
servotray
Servowire.
Thread.
5. Instal servo tray with aileron servo into
the wing as same as picture below.
Secure
3mm x 40mm.
Nilon control clasp.
M3 lock nut.
2x10mm.
aileron controlhorn
Removecovering

7
P-40C TOMAHAWK.
C/Aglue
1. Working with the aileron linkage for
now, thread one clevis onto one of the
threaded wires.
2. Attach the clevis to the outer hole in the
control horn.
3. Plug the aileron servo into the receiver
andcentertheservo.Installthe servoarmonto
the servo. The servo arm should be perpen-
dicular to the servo and point toward the mid-
dle of the wing.
INSTALLING THE AILERON
LINKAGES.

8
P-40C TOMAHAWK.
6.Insertthe 90degree bend down through
the hole in the servo arm. Install one nylon
snap keeper over the wire to secure it to the
arm. Installthe servoarm retainingscrew and
remove the masking tape from the aileron.
4. Locate one nylon servo arm, and using
wire cutters,remove all but one of the arms.
Using a 2mm drill bit, enlarge the third hole
out from the center of the arm to accommo-
date the aileron pushrod wire.
5.Usingpliers,carefullymake a90 degree
bend down at the mark made. Cut off the ex-
cess wire, leaving about 4mm beyond the
bend.
M2clevis.
M2locknut. Snapkeeper.
INSTALLING THE FLAP SERVOS.
Bend and cut after
Aileron

9
P-40C TOMAHAWK.
3mm x 40mm.
Nilon control clasp.
M3 lock nut.
INSTALLING THE FLAP CONTROL HORN.
Remove covering
C/Aglue

10
P-40C TOMAHAWK.
INSTALLING RETRACTABLE
LANDING GEAR.
INSTALLING THE AILERON
LINKAGES.
Top of wing
Remove covering
Remove covering on the pre- cut slot as picture.
Bottom of wing
Aileron servo
Flap servo
Flap
Aileron
Remove covering

11
P-40C TOMAHAWK.
C/Aglue
Secure

12
P-40C TOMAHAWK.
Markpoint
Drill a hole 2mm
diameter
Secure
3 x 12 mm
Secure

13
P-40C TOMAHAWK.
Secure
Cut
Trim and cut the fairings as pictures below.
Cut

14
P-40C TOMAHAWK.
See pictures below:
INSTALLING THE ENGINE MOUNT.
C/A glue
Repeat the procedure for the other wing.
Cut

15
P-40C TOMAHAWK.
C/Aglue
end of the line to the weighted clunk and the
otherend tothenylonpickuptubein thestop-
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) Carefullybend thethirdnylon tubedown
ata 45degreeangle (usingacigarettelighter).
This tubewill bevent tubeto thefuelingvalve.
INSTALLING THE STOPPER ASSEMBLY
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
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.
FUEL TANK.
35 x 25mm
4 x 30mm
Drill a hole 3mm
diameter

16
P-40C TOMAHAWK.
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.
Vent tube
Fuelfilltube
Fuel pick- up tube
9) To secure the fuel tank in place, ap-
plya beadofsilicon sealerto theforward area
of the tank, where it exits the fuselage behind
theengine mountingbox andto therearofthe
tank at the forward bulkhead.
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.
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.
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
fueltankcompartment.Airshouldflowthrough
easily.
silicon tube not included only
use for glow fuel.

17
P-40C TOMAHAWK.
INSTALLING THE ENGINE.
Locate the long piece of wire used for the
throttlepushrod. Oneendofthewire hasbeen
pre-bend in to a “Z” bend at the factory. This
“Z” bend should be inserted into the throttle
armofthe enginewhentheengine isfittedonto
theengine mount.Fittheengineto theengine
mount using the screws provided.
Right side
Mark point
Secure
4x 30mm
13 cm.
Fuel tank.
Drill a hole 4mm
diameter

18
P-40C TOMAHAWK.
Pushrod wire.
1) Slide the fiberglass cowl over the en-
gineand lineup thebackedgeofthe cowlwith
the marks you made on the fuselage.
Left side
Right side
Machine screw
COWLING.
Pushrod wire.
Left side
Right side
Trimandcut
3 x 10mm

19
P-40C TOMAHAWK.
3) Slide the cowl back over the engine
andsecure itin placeusing fourwood screws.
See picture below.
4) Installthe mufflerandmufflerextension
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.
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.
INSTALLING THE SPINNER.
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
Secure
INSTALLING THE FUSELAGE
BATTERY .
Tie wrap.

20
P-40C TOMAHAWK.
HORIZONTALSTABILIZER INSTALLATION.
C/Aglue
C/Aglue
C/Aglue
1) Using a modeling knife, cut away the
covering from the fuselage for the stabilizer
and remove it.
Horizontalstabilizerinstallation.
See picture below.
C/Aglue
Battery
2. Mount the servo to the tray using the
mountingscrews providedwithyourradiosys-
tem.
1. Install the rubber grommets and brass
colletsintotheelevatorservo.Test fittheservo
into the servo tray.
ELEVATOR INSTALLATION.
SERVO INSTALLATION.