instruction manual book

INSTRUCTION MANUAL BOOK
SPECIFICATION
Wingspan:
Length
:
Weight
:
Engine
:
Radio
:
Servo
:
1,800 mm
1,700 mm
4.8 Kg
1.60 cu.in
6 channels.
6 servos.
70.9 in.
66.93 in.
10.56 Lbs.
2 stroke.
Made in Vietnam.
EXTRA 300L.
Instruction Manual
This instruction manual is designed to help you build a great flying aeroplane. Please read this
manual thoroughly before starting assembly of your EXTRA 300L. 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.
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 preinstalled rudder.
(1) Horizontal stabilizer with preinstalled elevator halves.
2
Some more parts.
HARDWARE PACK
COWLING.
Landing gear.....
SUGGESTION.
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
aircraft and to protect the table. Keep a couple
of jars or bowls handy to hold the small parts
after you open the bag.
NOTE.
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. EXTRA 300L ARF 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.
EXTRA 300L.
Caution: this model is not a toy!
If you are a beginner to this type of powered
model, please ask an experienced model flyer
for help 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.
INSTRUCTION MANUAL
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 propeller.
INSTALLING THE AILERON SERVOS.
1. Install the rubber grommets and brass
eyelets onto the aileron servo.
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 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.
3
EXTRA 300L.
Instruction Manual
Electric
wire.
Thread.
C/A glue.
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,
remove the masking tape and the servo lead
from the thread.
C/A glue.
2. Using a modeling knife, remove the
covering at possition show below.
Remove the
covering.
Repeat the procedure for the other wing
half.
Bottom of wing.
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.
4. Drill 1,5mm pilot holes through the block
of wood for each of the four mounting screws
provided with the servo. Install servo into aileron
servo tray as same as picture below.
4
EXTRA 300L.
INSTRUCTION MANUAL
INSTALLING THE AILERON CONTROL HORN.
Remove the
covering.
Repeat the procedure for the other wing
half.
INSTALLING THE AILERON CONTROL HORN.
Nilon control clasp.
Aileron Control horn
Install aileron control horn as same
as picture below.
3x50mm.
M3 lock nut.
Control horn ofAileron
5
EXTRA 300L.
Instruction Manual
INSTALLING THE AILERON
LINKAGES.
Installing the aileron linkages as pictures
below.
M3
M3 lock nut
Control horn.
bottom size
Attach the clevis to the outer hole in the control horn.
Top size
C/A glue.
Repeat the procedure for the other wing
half.
INSTALLING THE ENGINE MOUNT.
Repeat the procedure for the other wing
half.
6
EXTRA 300L.
INSTRUCTION MANUAL
4x30mm
FUEL TANK.
INSTALLING THE STOPPER ASSEMBLY
7
EXTRA 300L.
1. The stopper has been pre-assembled at
the factory.
2. Using a modeling knife, cut one length of
silicon fuel line (the length of silicon fuel line is
calculated by how the weighted clunk should
rest about 8mm away from the rear of the tank
and move freely inside the tank). Connect one
end of the line to the weighted clunk and the
other end to the nylon pick up tube in the stopper.
Instruction Manual
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 front of the tank should just about
touch the back of the firewall.
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. Carefully bend the third nylon tube down
at a 45 degree angle (using a cigarette lighter).
This tube will be vent tube to the fueling valve.
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.
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.
Blow through one of the lines to ensure
the fuel lines have not become kinked inside
the fuel t ank comp artment. Air should flow
through easily.
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.
9. To secure the fuel tank in place, apply a
bead of silicon sealer to the forward area of
the tank, where it exits the fuselage behind the
engine mounting box and to the rear of the tank
at the forward bulkhead.
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 permanently until after balancing the airplane.
You may need to remove the tank to mount
the battery in the fuel tank compartment.
8
EXTRA 300L.
INSTRUCTION MANUAL
Fuel tank.
INSTALLING THE ENGINE.
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.
15cm.
C/A glue.
9
EXTRA 300L.
Instruction Manual
COWLING.
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.
Drill 2mm hole
4*30mm
Right side. Trim and cut.
Secure
Bottom side.
10
Trim and cut.
EXTRA 300L.
INSTRUCTION MANUAL
Right side.
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.
INSTALLING THE SPINNER.
Bottom side.
Install the spinner backplate, propeller and
spinner cone. The spinner cone is held in
place using two 3mm x 12mm wood screws.
Left side.
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.
3x12 mm.
Machine screw.
Top side.
11
EXTRA 300L.
MAIN GEAR INSTALATION.
PARTS REQUIRED
1. Assemble and mounting the wheel
pants as shown in the following pictures.
Drill 8mm hole
Drill 5mm hole
12
Instruction Manual
EXTRA 300L.
INSTRUCTION MANUAL
2. A drop of C/A glue on the wheel collar
screws will help keep them from coming lose
during operation.
Repeat the process for the other wheel.
Repeat the procedure for the other
wheel pant .
INSTALLING THE MAIN LANDING GEAR.
1. The blind nuts are already mounted inside the fuselage.
2. The holes in the landing gear should be
to accept the mounting bolts.
Finisling
MOUNTING THE TAIL WHEEL
BRACKET.
Secure.
3x12mm
1. Set the tail wheel assembly in place
on the plywood plate. The pivot point of the
tail wheel wire should be even with the rudder hinge line and the tail wheel bracket should
be centered on the plywood plate.
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EXTRA 300L.
Instruction Manual
2. Using a pen, mark the locations of the
two mounting screws. Remove the tail wheel
bracket and drill 1mm pilot holes at the locations marked.
Remove the covering
elevator servo right side
elevator servo left side
INSTALLING THE FUSELAGE
SERVOS.
HORIZONTAL STABILIZER INSTALLATION.
See picture below.
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.
14
Top elevator.
Center line.
EXTRA 300L.
INSTRUCTION MANUAL
Center line.
C/A glue.
C/A glue.
1. Using a modeling knife, cut away the
covering from the fuselage for the stabilizer
and remove it
C/A glue.
2. Draw a center line onto the horizontal
stabilizer. Then put the horizontal into the fuse
large.
C/A glue.
Center line.
Bottom elevator
15
EXTRA 300L.
Instruction Manual
Top elivator
3. Mark the shape of the vertical on the left
and right sides onto the horizontal stabilizer
using a felt-tip pen
Check to mark sure the wing and stabilizer are paralell. If they are not, lightly sand
the opening in the fuselage for the stabilizer
until the stabilizer is paralell to the wing.
Bottom elivator
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
Remove covering.
Bottom side.
16
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.
Epoxy glue.
EXTRA 300L.
INSTRUCTION MANUAL
C/A glue.
Right side.
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.
Remove covering
ELEVATOR CONTROL HORN
PUSHROD INSTALLATION.
Elevator control horn install as same as the
way of aileron control horn. Please see pictures
below.
M3 lock nut.
3mm x 40mm.
Nilon control clasp.
Control horn of elevator.
Left side.
C/A glue.
17
EXTRA 300L.
Instruction Manual
VERTICAL INSTALLATION.
Elevator
control horn
Elevator
control horn
ELEVATOR PUSHDROD
INSTALLATION
Elevator pushrod install as same as the
way of aileron pushrod.
Vertical stabilizer installation
See picture below.
Hinge.
1. Using a modeling knife cut away the
covering from the end of fuselage for the rudder hinge.
Elevator
pushrod.
Elevator
pushrod.
C/A glue.
18
EXTRA 300L.
INSTRUCTION MANUAL
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 horizont al stabilizer,
make sure you only press hard enough to cut
the film, not the balsa rudder.
C/A glue.
Remove covering.
C/A glue.
Also carefully remove the covering from
below the lines as you drew as same picture
below.
Remove
covering.
Hinge slot.
2. Put the rudder into the fuselage as
same as picture below.
3. Mark the shape of the vertical on the
left and right side on the rudder using a felttip pen.
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.
Pen.
Epoxy glue.
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EXTRA 300L.
Instruction Manual
RUDDER CONTROL HORN INSTALLATION.
Epoxy glue.
Rudder control horn install as same as the
way of aileron control horn. Please see pictures below.
M3 lock nut.
3mmx60mm. Nilon control clasp.
Control horn of Rudder.
C/A glue.
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 withT-pins or masking tape.
Allow the epoxy to fully cure before proceeding.
RUDDER PUSHROD INSTALLATION.
1. Rudder pushrod install as same as
the way of aileron control horn.
2. Rudder push - pull system install as
same as picture below.
M3 clevis ( 4pcs for push - pull system ).
M3 lock nut.
Rudder push-pull system install as sams
as picture below
C/A glue.
RUDDER CONTROL HORN INSTALLATION.
Rudder control horn install as same as the
way of aileron control horn. Please see pictures
below.
20
Remove
covering.
EXTRA 300L.
INSTRUCTION MANUAL
Rudder
control horn.
. Elevator
pushrod.
Rudder cable.
C/A glue.
Rudder
control horn.
Elevator
pushrod.
Rudder cable.
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EXTRA 300L.
Instruction Manual
Cut.
Rudder push-pull
cable.
3. Secure the tail wheel bracket in place
using three 3mm x 12mm wood screws. Be
careful not to overtighten the screws.
3X12mm
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EXTRA 300L.
INSTRUCTION MANUAL
secure.
Throttle servo.
Rudder cable.
INSTALLING THE THROTTLE PUSHROD.
Throttle pushrod.
INSTALLING THE SWITCH.
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 material
from the arm.
Conector.
1. Cut out the switch hole using a modeling
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.
Servo arm.
After installing the adjustable metal connector apply a small drop of thin C/A to the bottom nut. This will prevent the connector from
loosening during flight.
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EXTRA 300L.
Instruction Manual
Battery
Switch
INSTALLING THE RECEIVER AND BATTERY.
1. Plug the servo leads and the switch
lead into the receiver. You 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.
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.
Tie wrap.
24
Receiver
EXTRA 300L.
INSTRUCTION MANUAL
WING ATTACHMENT.
1. Using a modeling knife, remove the covering fuselage.
2. Locate the aluminium wing dihedral
brace.
3.
lage.
Test fit the dihedral brace into fuse-
Wing bolt.
Secure the wing and fuse large
through wing bolt as picture below.
Wing bolt.
Installing the canopy as same as
picture below
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EXTRA 300L.
Instruction Manual
BALANCING.
1) It is critical that your airplane be balanced correctly. Improper balance will cause
your plane to lose control and crash.
THE CENTER OF GRA VITY IS LOCA TED
135MM 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 135 mm back from
the leading edge, at the fuselage sides.
3. Turn the airplane up side down. Place
your fingers on the masking tape and carefully
lift the plane .
Accurately mark the balance point on the top
of the wing on both sides of the fuselage. The
balance point is located 135mm 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.
Secure the canopy frame.
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 obtain
good balance by doing so, then it will be
necessary to add weight to the nose or tail to
achieve the proper balance point.
CG
135mm
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EXTRA 300L.
INSTRUCTION MANUAL
CONTROL THROWS.
1) We highly recommend setting up a
plane 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.
Ailerons : 30mm up 30mm down
Elevator : 30mm up 30mm down
Rudder : 50mm right 50mm left
30
30
Ailerons Control
30
30
50
50
PRE-FLIGHT CHECK.
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 enjoy.
27
EXTRA 300L.
28
Instruction Manual
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