Black Horse Model SPEED AIR BH.08 Owner's manual

SPECIFICATION


Wingspan : 1,500 mm 59 in.


Length : 1,160 mm 46 in.


Weight : 2.4 kg 5.28 Lbs.


Radio : 04 channels.


Servo : 04 servos.


Engine : 40 - 46 2 stroke
52 4 stroke
Instruction Manual book
MadeinVietnam.

SPEED AIR-40. Instruction Manual.
2
This instruction manual is designed to help you build a great flying aeroplane. Please read this
manual thoroughly before starting assembly of your SPEED AIR-40. 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
supplierandjoinyourlocalR/CModelFlyingClub.R/CModelFlyingClubsofferavarietyoftraining
proceduresdesignedto helpthenewpilot onhiswaytosuccessfulR/Cflight.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.....
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
aircraftand toprotect thetable. Keepa 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
havethe correctpartsandthatthey fitand are
alignedproperly beforegluing!This willassure
properassembly. SPEEDAIR-40ARFis 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
kitarefuelproof.However,theyarenottolerant
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.
qSome more parts .....

Tail section assembly
(1) Vertical stabilizer with pre-
installedrudder.
(1) Horizontal stabilizer with pre-
installedelevatorhalves.
SUGGESTION.
NOTE.

SPEED AIR-40. Instruction Manual.
3
+ This is not a toy
+ Be sure that no other flyers are using your
radio frequency.
+ Wear safety glasses.
+ Keep loose clothing and wires away from
thepropeller.
+ 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
spinningpropeller.
SAFETY PRECAUTION.
SERVO INSTALLATION.
5) Using Kwik Bond 5 Minute Epoxy, glue
the servo mount into place. Remove any ex-
cess epoxy using a paper towel and rubbing
alcohol. Use pieces of masking tape to hold
the tray in place until the epoxy fully cures.
2) Place the mount onto the wing haft,
aligning the cutout in the mount with the cut-
out in the wing. The two notches in the mount
should face the leading edge of the wing.
 3) While holding the servo mount firmly in
place, trace around it using a pen.
4) Remove the mount, and using a model-
ing knife, carefully remove the covering from
inside the outline you drew.
Servomount.


1) Install the rubber grommets and brass
eyelets onto the aileron servo.
Because the size of servos differ, you
may need to adjust the size of the precut
opening in the mount. The notch in the sides
of the mount allow the servo lead to pass
through.

SPEED AIR-40. Instruction Manual.
4
6)Using amodeling knife,carefully remove
the covering from servo mount.
 7) Install the aileron servo into the servo
mount, withthe outputshaft towardsthe lead-
ing edge of the wing, using the wood screws
provided with your radio system. Drill 1/16”
pilotholes through themount beforeinstalling
the screws. This will prevent the wood from
splitting.


 2) Test fit the aluminium dihedral brace
into each wing half. The brace should slide in
easily.
WINGASSEMBLY.
 1) Location the aluminium wing dihedral
brace.
Pen.
Removecovering.
Epoxyglue.
C/Aglue.
Remove covering.
Aileronservo.
Aluminium.

SPEED AIR-40. Instruction Manual.
5


3) Apply masking tape at the wing join to
hold the wing halves together securely.
Maskingtape.
Epoxyglue.
INSTALLING THE AILERON LINKAGE.
1) Thread one nylon adjustable control
hornonto eachaileron torquerod. Thread the
horns on until they are flush with the ends of
the torque rods.
2) Thread one nylon clevis at least 5/16”
onto each of the two 2mm x 100mm threaded
wires.
3) Withthe aileronservo centered,install
theservo armonto theservo. The armshould
beinstalledso itis parallelwith thetrailingedge
of the wing.
Top side.
Maskingtape.
Bottom side.
Bend and cut after.

SPEED AIR-40. Instruction Manual.
6
4) Slide the pushrod wires following pic-
tureabove.
INSTALLING THE MAIN GEAR
WHEELS.
Remove covering.
Aileronpushrod.
3 x 12 mm. 2mm.
Secure.

SPEED AIR-40. Instruction Manual.
7
INSTALLING THE ENGINE MOUNT.
Repeat the procedure for the other main
gear wheel.
INSTALLING THE STOPPER ASSEMBLY




1) The stopper has been pre-assembled
at the factory.
2) Using a modeling knife, cut one length of
siliconfuel line (thelength ofsilicon fuelline is
calculated by how the weighted clunk 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) Carefullybend thesecondnylontubeup at
a 45 degree angle (using a cigarette lighter).
This tube will be the vent tube to the muffler.
4) Carefully bend the third nylon tube down
ata 45degreeangle (usingacigarette lighter).
This tubewill bevent tubetothefuelingvalve.
FUEL TANK.
When the stopper assembly is installed
in the tank, the top of the vent tube should
rest just below the top surface of the tank.
It should not touch the top of the tank.
Vent tube Fuel pick- up tube
Fuelfilltube

SPEED AIR-40. Instruction Manual.
8
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, whereitexitsthefuselage behindthe
enginemountingbox andto therearofthe 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.
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 tankshould justabout
touch the back of the firewall.
6) When satisfied 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.
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.
5) Test fit the stopper assembly into the tank.
It may be necessary to remove some of the
flashing around the tank opening using a
modeling knife. If flashing is present, make
sure none of it falls into the tank. Fueltank.
NOSE GEAR INSTALLATION.

SPEED AIR-40. Instruction Manual.
9
Adjust the nose gear steering arm until the
arm is parallel with the fire wall.
Installing steering arm as follow
Steering arm.
Locate the long piece of wire used for the
throttlepushrod. Oneendofthe wirehas been
pre-bend in to a “Z” bend at the factory. This
“Z” bend should be inserted into the throttle
armoftheenginewhen theengine isfitted onto
theengine mount.Fit theengine totheengine
mount using the screws provided.
INSTALLING THE ENGINE.
Steering arm.
3x20 mm.

SPEED AIR-40. Instruction Manual.
10
INSTALLING THE SPINNER.
Installthe spinnerbackplate,propeller and
spinner cone. The spinner cone is held in
place using two 3mm x 12mm wood screws.
Pushrod wire.

SPEED AIR-40. Instruction Manual.
11
Elevator servo.
HORIZONTAL STABILIZER.
Center line.
Remove covering.
 1. Using a modeling knife, cut away the
covering from the fuselage for the stabilizer
and remove it.
 2) Using a ruler and a pen, locate the
centerline of the horizontal stabilizer, at the
trailingedge, andplace amark.Useatraingle
and extend this mark, from back to front,
across the top of the stabilizer. Also extend
thismark downtheback ofthe trailingedge of
the stabilizer. Then slide the horizontal
stabilizerthe into the fuselage.
2. Mount the servo to the tray using the
mountingscrews providedwithyour radiosys-
tem.
ELEVATOR INSTALLATION.
SERVO INSTALLATION.
1. Install the rubber grommets and brass
colletsinto theelevatorservo.Testfittheservo
into the servo tray.
The top of the stabilizer does not have
the hinge pins exposed.
 4) Remove the stabilizer. Using the lines
youjust drewasa guide,carefully removethe
covering from between them using a model-
ingknife.
Pen.
Remove covering.
Top side.
Bottom side.
3. With the stabilizer held firmly in place,
use a pen and draw lines onto the stabilizer
where it and the fuselage sides meet. Do this
on both the right and left sides and top and
bottom of the stabilizer.

SPEED AIR-40. Instruction Manual.
12
Epoxyglue.
 6) When you a sure that everything is
aligned correctly, mix up a generous amount
of 30 Minute Epoxy. Apply a thin layer to the
topand bottomofthe stabilizermounting plat-
form sides in the fuselage. Slide the stabilizer
in place and realign. Double check all of your
mea-surements once more before the epoxy
cures. Hold the stabilizer in place with T-pins
or masking tape and remove any excess ep-
oxy using a paper towel and rubbing alcohol.
 7) After the epoxy has fully cured, remove
the masking tape or T-pins used to hold the
stabilizer in place. Carefully inspect the glue
joints. Use more epoxy to fill in any gaps that
may exist that were not filled previously and
clean up the excess using a paper towel and
rubbingalcohol.
C/Aglue.
 1) Drill through 6mm (diameter) the eleva-
tor using the control horn as a guide and
screw the control horn in place.
Markpoint.
Drillhole.
Elevator control horn install as same as the
wayofaileroncontrol horn.Pleaseseepictures
below.
3mm x 40mm.
M3 lock nut.
Nilon
control clasp.
Control horn of elevator.
When cutting through the covering to re-
move it, cut with only enough pressure to
only cut through the covering itself. Cut-
ting into the balsa structure may weaken
it.
5. Using a modeling knife, carefully re-
move the covering that overlaps the stabilizer
mounting platform sides in the fuselage. Re-
move the covering from both the top and the
bottom of the platform sides.
ELEVATOR CONTROL HORN
INSTALLATION.
bend

SPEED AIR-40. Instruction Manual.
13
Bottom.
C/Aglue.
C/Aglue.
2) Install control horn as same as picture
below.
Remove covering

SPEED AIR-40. Instruction Manual.
14
Bend.
Cut.
Hinge.
1) Using a modeling knife, remove the
covering from the top of the fuselage and the
covering from over the precut hinge slot cut
intothe lowerrearportion ofthe fuselageThis
slot accepts the lower vertical.
Remove covering.
Elevator servo.
Secure.
VERTICAL STABILIZER INSTALLATION.

SPEED AIR-40. Instruction Manual.
15
5) Slide the vertical stabilizer back in
place. Using a triangle, check to ensure
that thevertical stabilizeris aligned90degree
to the horizontal stabilizer.
90º
Vertical
Stabilizer.
Horizontal
Stabilizer.
Remove covering.
4) Now, remove the vertical stabilizer and
usinga modelingknife,carefullycutjust inside
the marked lines and remove the film of the
vertical stabilizer. Just as you did with the
horizontalstabilizer,make sureyou onlypress
hard enough to cut the film, not the balsa
verticalstabilizer.
Pen.
Hingeslot.
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
slotin themountingplatform andtothe 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
stabilizerin placewithT-pinsor maskingtape.
Allowtheepoxyto fullycurebeforeproceeding.
Epoxyglue.
C/Aglue.


 2) Slidethe verticalstabilizerinto theslot
in the top of the fuselage. The bottom edge of
the stabilizer should also be firmly pushed
against the top of the horizontal stabilizer.


 3) While holding the vertical stabilizer
firmly in place, use a pen and draw a line on
each side of the vertical stabilizer where it
meets the top of the fuselage.
RUDDERCONTROL HORN INSTALLATION.
When cutting through the covering to re-
moveit,cut withonly enough pressureto only
cut through the covering itself. Cutting into
the balsa structure may weaken it.
Rudder control horn install as same as the
way of elevator control horn. Please see
pictures below.
Rudder
control horn.

SPEED AIR-40. Instruction Manual.
16
SWITCH-THROTTLE SERVO
INSTALLATION.
See pictures below.
Servotray.
 1) Plug the servo leads and the switch
lead into the receiver. Plug the battery pack
lead into the switch.
q 2) Wrap the receiver and battery pack in
the protective foam to protect them from
vibration.
INSTALLINGTHE RECEIVERAND BATTERY.
Rudder pushrod install as same as the way
of aileron pushrod.
Battery.
 3) Do notpermanently securethereceiver
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.
Receiver.
Nose gear pushrod.
Rudder pushrod.
Rudder
pushrod.
Rudderservo.
Elevator servo.
Elevator
pushrod. Elevator
pushrod.
RUDDER PUSHROD INSTALLATION.

SPEED AIR-40. Instruction Manual.
17
Secure servo tray on to the fuselage.
 1) Install the throttle servo and the swich
in the servo tray.
Switch.
 2) Secure the switch in place using the
two machine screws provided with the radio
system.
Secure.
Cut.
Thottl pushrod.

SPEED AIR-40. Instruction Manual.
18
 1)It iscriticalthat yourairplanebebalanced
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.
BALANCING.
 2) Turn the airplane upside down. Place
yourfingers onthe maskingtape andcarefully
lift the plane .
ATTACHMENT WING-FUSELAGE.
See pictures below:
Remove covering.
Markpoint.
Accurately mark the balance point on the top
of the wing on both sides of the fuselage. The
balancepoint islocated 100mmback fromthe
leadingedge.Thisisthebalancepointatwhich
yourmodel shouldbalancefor yourfirstflights.
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
smoothnessandarrow- liketracking, butit may
thenrequiremorespeed fortakeoff and make
it more difficult to slow down for landing.
Movingthe balanceaftmakesthemodel more
agile with a lighter and snappier ”feel”. In any
case, please start at the location we
recommend .

SPEED AIR-40. Instruction Manual.
19
CG
100MM.
 1)We highlyrecommendsettingup aplane
using the control throws listed.
 2) The control throws should be measured
at the widest point of each control surface.
 3) Check to be sure the control surfaces
move in the correct directions.
CONTROL THROWS.
Ailerons : 15mm up 15mm down.
Elevator : 10mm up 10mm down.
Rudder : 15mm right 15mm left.
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,themodel is“tailheavy” andyou must add
weigh*tothe nose.Ifthenosedrops, itis“nose
heavy” and you must add weight* to the tail to
balance.
Lift the model. If the tail drops when you
lift,themodel is“tailheavy” andyou must add
weigh*tothe nose.Ifthenosedrops, itis“nose
heavy” and you must add weight* to the tail to
balance.
*Ifpossible,first attemptto balancethe model
by changing the position of the receiver
batteryand receiver.Ifyouareunabletoobtain
good balance by doing so, then it will be
necessary to add weight to the nose or tail to
achieve the proper balance point. 
1) Completely charge your transmitter and
receiverbatteries beforeyourfirstday offlying.
 2) Check every bolt and every glue joint in
your plane to ensure that everything is tight
and well bonded.
 3) Doublecheckthe balanceoftheairplane.
 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.
PRE-FLIGHT CHECK.
Aileron Control
10
10
We wish you many safe and enjoyable
flights with your SPEED AIR - 40.