Seagull Models Laser 200 User manual

LASER 200
Hand-made Almost Ready to Fly R/C Model Aircraft
ASSEMBLY MANUAL
Made in Vietnam.
Kit features
• Ready-made-minimal assembly & finishing required.
• Ready-covered covering.
• Comprehensive hardware pack including wheels, tank, spats,undercarriage.
• Photo-illustrated step-by-step Assembly Manual.
SPECIFICATIONS:
WING SPAN ----------------------------------------175CM -------------------------------- 68.75 in.
WING AREA ------------------------------------------4746CM2 --------------------------735.6 Sq.in.
WEIGHT ---------------------------------------4.1 - 5KG ---------------------- 9.02lb - 11lb.
ENGINE SIZE -------------------------------------.91 - 1.20 ---------------------------- 2 stroke.
-------------------------------------1.20 - 1.50 ---------------------------- 4 stroke.
RECOMMENDED R/C --------------------------- 4 CHANNEL MINIMUM WITH 6 SERVOS.
FLYING SKILL LEVEL ----------------------------------------ADVANCED / INTERMEDIATE.
LENGTH -------------------------------------------161CM ----------------------------------63.4in.

LASER 200 Instruction Manual
2
INTRODUCTION
Thank you for choosing the LASER 200 ARTF by SEAGULL MODELS. The LASER 200 was
designed with the intermediate/advanced sport flyer in mind. It is a semi scale airplane which is easy
to fly and quick to assemble. The airframe is conventionally built using balsa, plywood and veneer
to make it stronger than the average ARTF , yet the design allows the aeroplane to be kept light. You
will find that most of the work has been done for you already. The pushrods are pre-made to the
correct lengths, the motor mount has been fitted and the hinges are pre-installed and pinned for
security. Flying the LASER 200 is simply a joy.
This instruction manual is designed to help you build a great flying aeroplane. Please read this
manual thoroughly before starting assembly of your LASER 200 . 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.
ADDITIONAL ITEMS REQUIRED
.91-1.20 2-stroke engine or
1.20-1.50 4-stroke engine.
Computer radio with six servos.
Glow plug to suit engine.
Propeller to suit engine.
Protective foam rubber for radio
system.
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.
(1) Canopy hatch.
WING ASSEMBLY
(1) Right wing half with pre-installed
aileron.
(1) Left wing half with pre-installed
aileron.
(1) Alumium wing dihedral brace.
Tail section assembly
(1) Vertical stabilizer with pre-
installed rudder.
(1) Horizontal stabilizer with pre-
installed elevator halves.
Some more parts.
HARDWARE PACK
COWLING
Landing gear.....

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LASER 200 Instruction Manual
NOTE: To avoid scratching your new aero-
plane we suggest that you cover your
workbench with an old towel. Keep a
couple of jars or bowls handy to hold
the small parts after you open the
bags.
Please trial fit all parts. Make sure you
have the correct parts and that they
fit and are aligned properly before
gluing! This will ensure proper as-
sembly as the LASER 200 is made
from natural materials and minor ad-
justments may have to be made.
The paint and plastic parts used in
this kit are fuel proof. However, they
are not tolerant of many harsh chemi-
cals including the following: paint
thinner, cyano-acrylate glue accel-
erator, cyanoacrylate glue de-bonder
and acetone. Do not let these chemi-
cals come in contact with the colours
on the covering and the plastic parts.

LASER 200 Instruction Manual
4
4)Deflect the aileron and completely
saturate each hinge with thin C/A glue. The
ailerons front surface should lightly contact the
wing during this procedure. Ideally, when the
hinges are glued in place, a 1/64” gap or less
will be maintained throughout the lengh of the
aileron to the wing panel hinge line.
Note:
The control surfaces, including the
ailerons, elevators, and rudder, are
prehinged with hinges installed, but the
hinges are not glued in place. It is
imperative that you properly adhere the
hinges in place per the steps that follow
using a high-quality thin C/A glue.
1) Carefully remove the aileron from one
of the wing panels. Note the position of the
hinges.
2) Remove each hinge from the wing panel
and aileron and place a T-pin in the center of
each hinge. Slide each hinge into the aileron
until the T-pin is snug against the aileron. This
will help ensure an equal amount of hinge is
on either side of the hinge line when the aileron
is mounted to the wing panel.
HINGING THE AILERONS.
Note:
The hinge is constructed of a special
material that allows the C/A to wick or
penetrate and distribute throughout the
hinge, securely bonding it to the wood
structure of the wing panel and aileron.
3) Slide the aileron on the wing panel until
there is only a slight gap. The hinge is now
centered on the wing panel and aileron.
Remove the T-pins and snug the aileron
against the wing panel. A gap of 1/64” or less
should be maintained between the wing panel
and aileron.
5) Turn the wing panel over and deflect the
aileron in the opposite direction from the
opposite side. Apply thin C/A glue to each
hinge, making sure that the C/A penetrates into
both the aileron and wing panel.
C/A glue.
C/A glue.

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LASER 200 Instruction Manual
6) Using C/A remover/debonder and a
paper towel, remove any excess C/A glue that
may have accumulated on the wing or in the
aileron hinge area.
Using a small weight (Weighted fuel pick-up
works well) and thread, feed the string through
the wing as indicated.
INSTALLING THE AILERON SERVOS.
Attach servo lead to the aileron servo. Attach
the string to the servo lead and carefully thread
it though the wing. Once you have thread the
lead throught the wing, remove the string so it
can use for the other servo lead. Tape the servo
lead to the wing to prevent it from falling back
into the wing.
2) Install the aileron servo mount into the
wing, with the output shaft towards the lead-
ing edge of the wing.
Wing bottom.
Small weight.
Thread.
Electric wire.
8) After both ailerons are securely hinged,
firmly grasp the wing panel and aileron to
make sure the hinges are securely glued and
cannot be pulled out. Do this by carefully
applying medium pressure, trying to separate
the aileron from the wing panel. Use caution
not to crush the wing structure.
Note: Work the aileron up and down several
times to “work in” the hinges and check
for proper movement.
7) Repeat this process with the other wing
panel, securely hinging the aileron in place.
1) Install the rubber grommets and brass
collets onto the aileron servo. Test fit the servo
into the aileron servo mount.
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.
We recommended to use long ser-
vos arm for all servos without throttle
servo.
Small weight.
Thread.
Servo (2pcs).

LASER 200 Instruction Manual
6
AILERON LINKAGE.
INSTALLING THE AILERON LINKAGE.
1) Using a ruler & pen to draw a straight
line as below picture.
2) Locate the two nylon control horns, two
nylon control horn backplates and six machine
screws.
3) Position the aileron horn on the bottom
side of aileron. The clevis attachment holes
should be positioned over the hinge line.
4) Using a 1mm drill bit and the control
horns as a guide, drill the mounting holes
through the aileron halves.
6) Thread one nylon adjustable control horn
onto each aileron control rod. Thread the
horns on until they are flush with the ends of
the control rods.
5) Mount the control horns by inserting the
screws through the control horn bases and
aileron halves, then into the mounting
backplates. Do Not overtighten the screws or
the backplates may crush the wood.
Repeat the procedure for the other wing
half.2MM x 30mm.
Straight line.
3MM x 30mm.
M3 lock nut.
M3 lock nut.
Control Horn.
Mounting Screws.
Mounting Plate.
3MM x 30mm.
2MM x 30mm.
C/A glue attach.

7
LASER 200 Instruction Manual
Mark point.
Repeat the procedure for the other wing
half.
M2 lock nut.
Snap keepper.

LASER 200 Instruction Manual
8
FUEL TANK.
INSTALLING THE STOPPER ASSEMBLY.
1) Using a modeling knife, carefully cut
off the rear portion of one of the 3 nylon tubes
leaving 1/2” protruding from the rear of the
stopper. This will be the fuel pick up tube.
2) Using a modeling knife, cut one length
of silicon fuel line. Connect one end of the
line to the weighted fuel pickup and the other
end to the nylon pick up tube.
3) Carefully bend the second nylon tube
up at a 45º angle. This tube is the vent tube.
ENGINE MOUNT.
Mark and drill 4 holes for engine mount.

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LASER 200 Instruction Manual
Carefully use a lighter or heat gun to
permenently set the angle of the vent tube.
Important: When the stopper assembly is in-
stalled 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.
4) 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 falls into the tank.
5) With the stopper assembly in place,
the weighted pickup should rest away from
the rear of the tank and move freely inside the
tank. The top of the vent tube should rest just
below the top of the tank. It should not touch
the top of the tank.
6) When satisfied with the alignment of
the stopper assembly tighten the 3mm x 20mm
machine screw until the rubber stopper ex-
pands and seals the tank opening. Do not
overtighten the assembly as this could cause
the tank to split.
Attach the silicone fuel and pressure pipes to
the tank. The lower pipe is the ‘feed’ and the
upper two the ‘pressure and fill’. The fill pipe
is the next pipe.
Slide the tank into the fuselage from inside so
that the neck is at the top of the fuselage and
it locates through the engine bulkhead. Gently
secure it to the top horizontal former with a
cable tie.
You should mark which tube is the vent
and which is the fuel pickup when you
attach fuel tubing to the tubes in the stopper.
Once the tank is installed inside the fuselage,
it may be difficult to determine which is which.
Blow through one of the lines to ensure
the fuel lines have not become kinked in-
side the fuel tank compartment. Air should flow
through easily.
WHEEL AND WHEEL PANTS.
PARTS REQUIRED
1) Assembling and mounting the wheel
pants as shown below pictures.

LASER 200 Instruction Manual
10
Landing gear.
2) Follow diagram below for wheel pant
installation:
3) You have to trim each axles and using a
toll cutting and cut-off wheel.
Caution when cutting the axles and wear
protective goggles.
14mm.
7mm.
62mm.
lite-plywood block.
Wheel Collar.
Axle.
Wheel.
Nut.
Wheel Pant.
Landing Gear.
Nut.
Plywood Washer.
Plywood Washer.

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LASER 200 Instruction Manual
4) 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.
MOUNTING THE ENGINE.
1) Trial fit your engine on the motor mount.
The engine should be positioned so there is
ample clearance in the cowling for spinner
backplate mounted to the prop drive shaft.
2) Marking 4 points on the motor mount.
3) Secure your engine on the motor mount
by mounting with 4 bolts, 8 washers, and 4
nuts provided.
A drop C/A glue on the bolt threads will help
prevent loosening in flight.
 4) Attach the Z-Bend in the pushrod wire to
the throttle arm on the carburetor. You will need
to remove the throttle arm from the car- buretor
to be able to attach the Z-bend. When
complete, re-attach the throttle arm to the car-
buretor.
Pushrod wire.
COWLING.
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.
Cylinder head.
4MM x 30MM.
150mm.
Muffler exhaust.
Screw set.

LASER 200 Instruction Manual
12
INSTALLING THE MAIN LANDING GEAR.
1) The blind nuts for securing the landing
gear are already mounted inside the fuselage.
2) Using the hardware provided, mount
the main landing gear to the fuselage.
1.5mm wire
( needle valve).
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. Use the spinner backplate as a guide.
Hold the cowl firmly in place using pieces of
masking tape.
Because of the size of the cowl, it may be nec-
essary to use a needle valve extension for the
high speed needle valve. Make this out of suf-
ficient length 1.5mm wire and install it into the
end of the needle valve. Secure the wire in
place by tightening the set screw in the side of
the needle valve.
3) 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. Secure the cowl to fuse-
lage using the 3mmx12mm screws (4).
3mmx12mm.

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LASER 200 Instruction Manual
Right side.
Using spinner size 3” ( not include).
Install the spinner backplate, propeller and
spinner cone.
The propeller should not touch any part
of the spinner cone. If it does, use a
sharp modeling knife and carefully trim away
the spinner cone where the propeller comes
in contact with it.
ELEVATOR AND RUDDER SERVO
INSTALLATION.
1) Locate and cut out the covering film
from the servo holes in both sides of fuselage.
2) Install the rubber grommets and brass
collets onto the aileron servo. Test fit the servo
into the aileron servo mount.
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.
1) Carefully remove the elevator from one
of the horizontal stabilizer panels. Note the
position of the hinges.
2) Remove each hinge from the horizontal
stabilizer panel and elevator and place a T-pin
in the center of each hinge. Slide each hinge
into the elevator until the T-pin is snug against
the elevator. This will help ensure an equal
amount of hinge is on either side of the hinge
line when the elevator is mounted to the
horizontal stabilizer panel.
HINGING THE ELEVATORS.
Left side.
INSTALLING THE SPINNER.
We recommended to use long ser-
vos arm for all servos without throttle
servo.

LASER 200 Instruction Manual
14
HORIZONTAL STABILIZER.
1) Using a ruler and a pen, locate the
centerline of the horizontal stabilizer, at the
trailing edge, and place a mark. Use a tri-
angle and extend this mark, from back to front,
across the top of the stabilizer. Also extend
this mark down the back of the trailing edge
of the stabilizer.
Center line.
6) Using C/A remover/debonder and a
paper towel, remove any excess C/A glue that
may have accumulated on the horizontal
stabilizer or in the elevator hinge area.
8) After both horizontal stabilizer are
securely hinged, firmly grasp the horizontal
stabilizer panel and elevator to make sure the
hinges are securely glued and cannot be pulled
out. Do this by carefully applying medium
pressure, trying to separate the elevator from
the horizontal stabilizer panel. Use caution not
to crush the horizontal stabilizer structure.
7) Repeat this process with the other
horizontal stabilizer panel, securely hinging the
elevator in place.
5) Turn the horizontal stabilizer panel over
and deflect the elevator in the opposite
direction from the opposite side. Apply thin C/
A glue to each hinge, making sure that the C/A
penetrates into both the elevator and horizontal
stabilizer panel.
3) Slide the elevator on the horizontal
stabilizer panel until there is only a slight gap.
The hinge is now centered on the horizontal
stabilizer panel and elevator. Remove the T-
pins and snug the elevator against the
horizontal stabilizer panel. A gap of 1/64” or
less should be maintained between the
horizontal stabilizer panel and elevator.
The hinge is constructed of a special
material that allows the C/A to wick or
penetrate and distribute throughout the
hinge, securely bonding it to the wood
structure of the horizontal stabilizer
panel and elevator.
4)Deflect the elevator and completely
saturate each hinge with thin C/A glue. The
elevators front surface should lightly contact
the horizontal stabilizer during this procedure.
Ideally, when the hinges are glued in place, a
1/64” gap or less will be maintained throughout
the lengh of the elevator to the horizontal
stabilizer panel hinge line.
Note:
C/A glue.
C/A glue.

15
LASER 200 Instruction Manual
8) After the epoxy has fully cured, re-
move 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 rubbing alcohol.
2) Using a modeling knife, carefully re-
move the covering at mounting slot of hori-
zontal stabilizer ( both side of fuselage).
3) Slide the stabilizer into place in the pre-
cut slot in the rear of the fuselage. The stabi-
lizer should be pushed firmly against the front
of the slot.
4) 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.
5) Remove the stabilizer. Using the lines
you just drew as a guide, carefully remove the
covering from between them using a model-
ing knife.
6) 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.
When cutting through the covering to re-
move it, cut with only enough pressure to
only cut through the covering itself. Cutting
into the balsa structure may weaken it.
7) 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 realign. Double check all of your mea-
surements once more before the epoxy cures.
Hold the stabilizer in place with T-pins or mask-
ing tape and remove any excess epoxy using
a paper towel and rubbing alcohol.
Remove covering.
Hinge slot.
Covered wood
filler piece.

LASER 200 Instruction Manual
16
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.
2) Slide the vertical stabilizer into the slot
in the top of the fuselage. The rear edge of
the stabilizer should be flush with the rear
edge of the fuselage and the lower rudder
hinge should engage the precut hinge slot in
the lower fuselage. The bottom edge of the
stabilizer should also be firmly pushed against
the top of the horizontal stabilizer.
VERTICAL STABILIZER
INSTALLATION.
1) Using a modeling knife, remove the
covering from over the precut hinge slot cut
into the lower rear portion of the fuselage. This
slot accepts the lower rudder hinge.
Hinge slot.
HINGING THE RUDDER.
Hinging the rudder refer to hinging the
aileron and elevator.
C/A glue.

17
LASER 200 Instruction Manual
7) Turn the fuselage panel over and deflect
the vertical stabilizer in the opposite direction
from the opposite side. Apply thin C/A glue to
each hinge, making sure that the C/A
penetrates into thevertical stabilizer and
fuselage panel.
8) Using C/A remover/debonder and a
paper towel, remove any excess C/A glue that
may have accumulated on the fuselage or in
the vertical stabilizer hinge area.
Work the rudder left and right several
times to “work in” the hinges and check
for proper movement.
Note:
5) Slide the vertical stabilizer back in
place. Using a triangle, check to ensure that
the vertical stabilizer is aligned 90º to the hori-
zontal stabilizer as shown in the illustration
below.
When cutting through the covering to re-
move it, cut with only enough pressure
to cut through the covering itself. Cutting into
the balsa structure may weaken it.
6)Deflect the vertical stabilizer and
completely saturate each hinge with thin C/A
glue. The vertical stabilizer front surface
should lightly contact the fuselage during this
procedure. Ideally, when the hinges are glued
in place, a 1/64” gap or less will be maintained
throughout the lengh of the vertical stabilizer
to the fuselage panel hinge line.
Note: The hinge is constructed of a special
material that allows the C/A to wick or penetrate
and distribute throughout the hinge, securely
bonding it to the wood structure of the fuselage
panel and vertical stabilizer.
4) Remove the stabilizer. Using a mod-
eling knife, remove the covering from below
the lines you drew. Also remove the covering
from the bottom edge of the stabilizer and the
bottom and top edges of the filler block. Leave
the covering in place on the sides of the filler
block.
90º
Vertical
Stabilizer.
Horizontal
Stabilizer.
Remove covering.
C/A glue.

LASER 200 Instruction Manual
18
3mm
drill bit.
Rudder.
2.2mm.
9) When you are sure that everything is
aligned correctly, mix up a generous amount of
30 Minute Epoxy. Apply a thin layer to the mount-
ing slot in the top of the fuselage and to the sides
and bottom of the vertical stabilizer mounting
area. Apply epoxy to the bottom and top edges
of the filler block and to the lower hinge also.
Set the stabilizer in place and realign. Double
check all of your measurements once more be-
fore the epoxy cures. Hold the stabilizer in place
with T-pins or masking tape and remove any
excess epoxy using a paper towel and rubbing
alcohol. Allow the epoxy to fully cure before pro-
ceeding.
INSTALLING TAIL STRUT SYSTEM.
Tail strut system assembly follow pictures
below.
3MM x 30mm.
3mm
drill bit.
Opening up the hole slightly with 2.2mm
screw.

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LASER 200 Instruction Manual
2mmx20mm.
3mmx30mm.
CONTROL HORN INSTALLTION.
1) Locate the three nylon control horns,
three nylon control horn backplates.
2) Position the two elevator horns on the
bottom side of each elevator out from the sides
of the fuselage. The clevis attachment holes
should be positioned over the hinge line.
3) Using a 1.5mm drill bit and the control
horns as a guide, drill the mounting holes
through the elevator halves.
4) Mount the control horns by inserting the
screws through the control horn bases and
eleva- tor halves, then into the mounting
backplates. Do not overtighten the screws or
the backplates may crush the wood.
5) Position the rudder control horn on the
left side of the airplane.
6) Install the rudder control horn using the
same method as with the elevator control
horns.
Control Horn.
Mounting Screws.
Mounting Plate.
3MM x 30mm.
2MM x 20mm.
C/A glue attach.

LASER 200 Instruction Manual
20
 3) Connect the elevator and rudder servos
to your radio’s receiver and turn on the sys-
tem. Set the trim tabs on the transmitter to
neutral and center the servo arms. The eleva-
tor and rudder servo arms should be perpen-
dicular to the servos.
4) One at a time, hold the pushrods in po-
sition over the respective servos to check for
proper servo direction. If any servo turns in
the wrong direction, switch your radio’s re-
versing switches as necessary to achieve the
correct direction.
Control horn.
Connector.
Pushrod.
Metal clevis.
2) Rudder pushrods assembly follow
picture below.
PUSHROD INSTALLATION.
 1) Elevator pushrods assembly follow
pictures below.
Metal clevis.
Control horn.
Pushrod. Connector.
Rudder control horn.
Elevator control horn.