Black Horse Model Twister Owner's manual

SPECIFICATION
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
Wingspan : 1,380 mm 54.3 in.
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Length : 1,100 mm 43.3 in.
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Weight : 2.15 kg 4.73 Lbs.
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Radio : 04 channels.
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Servo : 05 servos.


Engine : 32-40 Cu. in 2 stroke.
52 Cu. in 4 stroke.
Instruction Manual book
MadeinVietnam.

TWISTER . Instruction Manual
2
This instruction manual is designed to help you build a great flying aeroplane. Please read this
manualthoroughlybeforestartingassemblyofyour TWISTER.Usethepartslistingbelowtoidentify
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
aircraftand toprotect thetable. Keepa couple
of jars or bowls handy to hold the small parts
after you open the bag.
Pleasetrialfitalltheparts. Makesureyouhave
the correct parts and that they fit and are
alignedproperly beforegluing!Thiswillassure
properassembly. TWISTER ARFishand made
from natural materials, every plane is unique
andminor adjustmentsmayhave tobe 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-
installedrudder.
(1) Horizontal stabilizer with pre-
installedelevator halves.
SUGGESTION
NOTE.

TWISTER. 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.
+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. 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.
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, thework
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.
REPLACEMENT LARGE PARTS
B. Right wing panel.
D. Fuselage.
F. Horizon stabilizer.
G. Vertical stabilizer.
C. Left wing panel.
E. Fuselage top hatch.
A
B
D
C
E
G
F
A. Cowling.

TWISTER . Instruction Manual
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 4. 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.
Electricwire
 3. Drill 1,5mm pilot holes through the block
of wood for each of the four mounting screws
provided with the servo. Install servo into ai-
leron servo tray as same as picture below.
Aileronservotray
INSTALLING THE AILERON SERVOS.
 1. Install the rubber grommets and brass
eyelets onto the aileron servo.
 2.Usinga modelingknife,remove thecov-
ering servo tray.
Bottom side of the wing.
Servo tray.

TWISTER. INSTRUCTION MANUAL
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Servo tray
Thread
Secure
 5. Instal servo tray with aileron servo into
the wing as same as picture below.
Repeat the procedure for the other wing
half.
INSTALLING THE AILERON CONTROL
HORN.
ControlhornofAileron
3mm x 40mm.
M3 lock nut.
Nilon
control clasp.
2 x 10 mm. 1. Using a ruler & pen to draw a straight
line as below picture.
Straitghline
 2. Drill through 6mm (diameter) the ai-
leron using the control horn as a guide and
screw the control horn in place.
AileronControlhorn

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INSTALLING THE AILERON LINKAGES
 1. Working with the aileron linkage for
now, thread one nylon clevis onto one of the
threaded wires.
 2. Attach the clevis to the outer hole in the
control horn. Install a silicone tube on the
clevis.
 3. Plug the aileron servo into the receiver
andcentertheservo.Installthe servoarmonto
the servo. The servo arm should be
perpendicular to the servo and point toward
the middle of the wing.
Bottom side
Top side
 3) Install control horn as same as picture
below.
Control horn
Remove
covering
C/Aglue

TWISTER. INSTRUCTION MANUAL
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 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
outfromthecenterofthe armtoaccommodate
the aileron pushrod wire.
 5. Using pliers, carefully make a 90
degree bend down at the mark made. Cut off
the excess wire, leaving about 4mm beyond
thebend.
 6.Insertthe90degree 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.
JOINING THE WING HALVES
 1. Locate the aluminium wing dihedral
brace. Using a ruler, locate its centre and
draw a vertical line .
Removecovering
Bend and cut after
 3. Test fit the dihedral brace into each
winghalf. Thebrace shouldslidein easilyup
tothecentrelinethatyoudrew.Ifnot,use220
gritsandpaperwithasandingblockandsand
downthe edgesand endsof thebrace untilit
fits properly.
 2. Usingamodeling knife,remove the cov-
ering wing.

TWISTER . Instruction Manual
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 3. Mix a generous amount of 30 minute
epoxy. Coat the exposed half of the dihedral
brace,andtheremainingwingjoinerboxand
both root ribs with epoxy. Slide the two wing
halves together and carefully align them at
theleadingandtrailingedges.Wipeawayany
excessepoxy usingpaper towels.Use mask
ing tape wrapped around the center section
to hold the halves in place until the epoxy
cures.
INTALLING THE ENGINE MOUTH
Bottomside
Topside
Maskingtape.
Apply masking tape.
Maskingtape.
Apply epoxy to
theseareas.
3x25mm.
3x20mm.

TWISTER. INSTRUCTION MANUAL
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INSTALLING THE STOPPER ASSEMBLY
 1. The stopper has been pre-assembled at
the factory.
 2.Usingamodelingknife,cut onelength of
siliconfuelline (thelength ofsilicon fuellineis
calculated by how the weighted clunk should
restabout 8mmaway fromtherearofthetank
andmove freelyinside thetank). Connectone
end of the line to the weighted clunk and the
otherend tothenylonpickuptubein thestop-
per.
 3.Carefully bendthe secondnylon tubeup
ata 45degreeangle (usingacigarettelighter).
This tube will be the vent tube to the muffler.
 4.Carefully bendthe thirdnylon tubedown
ata 45degreeangle (usingacigarettelighter).
This tubewill bevent tubeto thefuelingvalve.
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.
 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 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.
 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.
FUEL TANK
Vent tube Fuel pick- up tube
Fuelfilltube
3x25mm.

TWISTER . Instruction Manual
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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
fitted onto the engine mount. Fit the engine
to the engine mount using the screws
provided.
100mm
C/Aglue
INTALLING THE ENGINE-THROTTLE
Tank brace
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, whereit exitsthefuselage behindthe
enginemountingbox andtotherearofthetank
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

TWISTER. INSTRUCTION MANUAL
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Martpoint
 1) Slide the fiberglass cowl over the en-
gine and line up the back edge of the cowl
with the marks you made on the fuselage.
COWLING
Trimandcut
Pushrodwire
3x20mm

TWISTER . Instruction Manual
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3) Slide the cowl back over the engine
and secure it in place using four wood
screws.See picture below.
Machinescrew.
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.
3x10mm

TWISTER. INSTRUCTION MANUAL
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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.
Installthe spinnerbackplate,propellerand
spinner cone. The spinner cone is held in
place using two 3mm x 12mm wood screws.
INSTALLING THE SPINNER
 1) Using a modeling knife, cut away the
covering from the fuselage for the stabilizer
and remove it.
 2) Draw a center line onto the horizontal
stabilizer. Then slide the horizontal into the
fuselage.
Secure
Centerline.
Removecovering
 1. Install the rubber grommets and brass
colletsintotheelevatorservo.Testfittheservo
into the servo tray.
 2. Mount the servo to the tray using the
mountingscrews providedwithyourradiosys-
tem.
ELEVATOR INSTALLATION.
SERVO INSTALLATION.
HORIZONTAL STABILIZER INSTALLATION.
Elevatorservo

TWISTER . Instruction Manual
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 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
topand bottomofthestabilizermountingarea
and to the stabilizer mounting platform sides
inthefuselage.Slidethestabilizerinplaceand
re-align. Double check all of your
measurements one more time before the
epoxycures. Removeanyexcess epoxyusing
a paper towel and rubbing alcohol and hold
the stabilizer in place with T-pins or masking
tape.
Epoxyglue
Top side
Bottom side
 3) Mark the shape of the vertical on the
left and right sides onto the horizontal stabi-
lizer using a felt-tip pen
 4) Remove the stabilizer. Using the lines
youjustdrew asa guide,carefully removethe
coveringfrom betweenthem usingamodeling
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
balsastructure mayweaken it.Thiscouldlead
to possible failure during flight
Mark point
Topside
Bottomside

TWISTER. INSTRUCTION MANUAL
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 6) After the epoxy has fully cured, re-
move
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
rubbingalcohol.
C/A glue
Elevator control horn install as same as the
way of aileron control horn. Please see pic-
tures below.
Control horn of elevator.
C/Aglue
3mm x 40mm.
M3 lock nut.
Nilon
control clasp.
ELEVATOR CONTROL HORN INSTALLA-
TION.
Markpoint
Drill a hole with 6mm (diameter)
Remove covering

TWISTER . Instruction Manual
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Bend and
cut after
Elevator servo
ELEVATOR PUSHROD INSTALLATION.
Elevator pushrod
Bottom side
Top side

TWISTER. INSTRUCTION MANUAL
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 1) Using a modeling knife cut away the
covering from the fuselage for the rudder and
remove it.
VERTICAL INSTALLATION
 2) Slide the rudder into the fuselage as
same as picture below.
 3)Mark the shapeof the verticalon the left
and right side on the rudder using a felt-tip
pen.
 4) Now, remove the rudder and using a
modeling knife, carefully cut just inside the
markedlinesandremovethefilm oftherudder.
Just as you did with the horizontal stabilizer,
make sure you only press hard enough to cut
the film, not the balsa rudder.
 5)Putthe vertical stabilizer back in place.
Using a triangle, check to ensure that the
vertical stabilizer is aligned 90 degree to the
horizontal stabilizer.
Remove covering
Markpoint
Rudder servo
Remove covering

TWISTER . Instruction Manual
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Rudder control horn install as same as the
way of aileron control horn. Please see pic-
tures below.
Controlhornof Rudder.
RUDDER CONTROL HORN INSTALLA-
TION.
3mm x 40mm.
M3 lock nut.
Nilon
control clasp.
Markpoint
Remove
covering
Epoxyglue
C/Aglue
 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 andtothevertical
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
stabilizerinplacewithT-pinsormaskingtape.
Allowtheepoxytofullycurebeforeproceeding.
90º
Vertical
Stabilizer.
Horizontal
Stabilizer.

TWISTER. INSTRUCTION MANUAL
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Rudder
pushrod
Elevator
pushrod
Rudderservo
Elevatorservo
Bend and cut after
C/Aglue
RUDDER PUSHROD INSTALLATION.

TWISTER . Instruction Manual
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Throtte servo
Throtte pushrod
Cut
Afterinstalling theadjustablemetal connec-
tor apply a small drop of thin C/A to the bot-
tom nut. This will prevent the connector from
looseningduringflight.
INSTALLING THE THROTTLE PUSHROD
 1) Install one adjustable metal connector
through the third hole out from the center of
oneservo arm,enlarge theholeintheservo
arm using a 2mm drill bit to accommodate
the servo connector. Remove the excess
material from the arm.
Servo arm.
Conector.
 1. Cutout theswitch holeusingamodeling
knife. Use a 2mm drill bit and drill out the two
mounting holes through the fuselage side.

2. Secure the switch in place using the
two machine screws provided with the radio
system.
INSTALLING THE SWITCH.
 2) Plug the throttle servo into the receiver
and turn on the radio system. Check to
ensurethatthe throttleservo outputshaft is
moving in the correct direction. When the
throttle stick is moved forward from idle to
full throttle, the throttle barrel should also
open and close using this motion. If not,
reverse the direction of the servo, using the
transmitter.
 3) Slide the adjustable metal connector /
servo arm assembly over the plain end of
the pushrod wire. Position the throttle stick
andthe throttletrimattheirlowest positions.
 4) Manuallypush thecarburatorbarrel fully
closed. Angle the arm back about 45 degree
fromcenterand attachtheservo armonto the
servo. With the carburator barrel fully closed,
tighte the set screw in the adjustable metal
connector.
 5) Remove the excess throttle pushrod
wire using wire cutters and install the servo
arm retaining screw.