Made in Vietnam.
Kit features.
• Ready-made—minimal assembly & finishing required.
• Ready-covered covering.
• Photo-illustrated step-by-step Assembly Manual.
Specifications
Wingspan-------------------------------------- 70.9 in------------------------------ 180cm.
Wing area------------------------------------- 863.4 sq.in------------------- 55.7 sq.dm.
Approximate flying weight------------------10.6 lbs------------------------------4.8kg.
Length------------------------------------------ 46.6in -----------------------------118.3cm.
Recommended engine size-------------- .1.20 cu.in----------------------- 2-stroke.
.1.50cu.in------------------------4-stroke.
Radio System required 4 channels with 6 servos
Flying skill level Intermediate/advanced.
“Graphics and specifications may change without notice”.
MS: SEA 82
ASSEMBLY MANUAL
GEEBEE. Instruction Manual
2
INTRODUCTION.
Thank you for choosing the GEEBEE ARTF by SEAGULL MODELS. The GEEBEE was
designed with the intermediate/advanced sport scale 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 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 motor mount has been fitted and the hinges
are pre-installed . Flying the GEEBEE 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 GEEBEE. 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.
.1.2 cu.in 2-stroke engine.
.1.5 cu.in 4-stroke engine.
4 channels with 6 servos.
Glow plug to suit engine
Propeller to suit engine
Protective foam rubber for radio
system
Silicone fuel line
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/ aileron
(1) Left wing half with/ aileron
(1) Aluminium dihedral brace
Tail section assembly
(1) Horizontal stabilizer/ elevator
halves.
(1) Rudder halves.
Some more parts.
HARDWARE PACK
COWLING
Landing gear.....
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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 wing
panel until the T-pin is snug against the wing
panel. This will help ensure an equal amount
of hinge is on either side of the hinge line when
the aileron is mounted to the aileron.
3) Slide the wing panel on the aileron 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.
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.
Note:
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 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.
To avoid scratching your new aeroplane 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
assembly as the GEEBEE is made from
natural materials and minor adjustments 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 chemicals including the following: paint thinner, cyano-acrylate
glue accelerator, cyanoacrylate glue de-bonder
and acetone. Do not let these chemicals come
in contact with the colours on the covering and
the plastic parts.
NOTE:
HINGING THE AILERONS.
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.
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.
C/A glue.
Hinge.
Hinge.
T- pin.
Hinge.
T- pin.
GEEBEE. Instruction Manual
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TURNBUCKLE INSTALLATION.
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.
7) Repeat this process with the other wing
panel, securely hinging the aileron in place.
HINGING THE RUDDER.
Glue the elevator hinges in place using the
same techniques used to hinge the ailerons.
Glue the rudder hinges in place using the
same techniques used to hinge the ailerons.
Work the aileron up and down several
times to “work in” the hinges and check
for proper movement.
Note:
Aileron control horn: See pictures below.
AILERON CONTROL HORN
Hinge.
2 sets.
3x40mm.
HINGING THE ELEVATOR.
Installing the turnbuckle for the wing as same
as pictures below.
The hole location of turnbuckles shown in picture below .
Washer.
Turnbuckle.
Wing bottom.
3 x 20mm.
Washer.
Wing bottom.
Locker glue.
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Aluminum Washer.
CONTRONL HORN M3
M3 LOCK NUT.
Epoxy.
Aluminum Washer.
ELEVATOR CONTROL HORN.
M3 LOCK
NUT.
ALUMINUM WASHER.
ALUMINUM WASHER.
CONTRONL HORN
M3 SCREW.
16mm.
Epoxy.
Wing
Epoxy.
Wing
Install the elevator control horn using the
same method as with the aileron control
horns.
2 sets.
3x35mm.
Rudder control horn:
Using the same techniques used aileron
control horn. See picture below .
Elevator control horn.
16mm.
Epoxy.
RUDDER CONTROL HORN.
1 sets.
3x35mm.
Horizontal
Stabilizer.
GEEBEE. Instruction Manual
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2) Using a modeling knife, cut one length
of silicon fuel line. Connect one end of the line
to the weighted fuel pick up and the other end
to the nylon pick up tube.(The silicon tube is
not included).
3) Carefully bend the second nylon tube
up at a 45º angle. This tube is the vent tube.
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.
INST ALLING THE STOPPER ASSEMBL Y.
Thread locker glue.
See pictures below.Make yourself the
template of your engine on paper .
ENGINE MOUNT INSTALLATION.
Mark and drill 4 holes for engine mount.
Insert 4 blind nuts to firewall.
4x30mm.
16mm.
EPOXY .
Rudder control horn.
Hinge.
CONTRONL HORN
M3 SCREW.
ALUMINUM WASHER.
ALUMINUM WASHER.
M3 LOCK NUT.
EPOXY .
Fuselage.
Rudder.
3 x 25mm.
3 x 25mm.
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Vent tube.
Fuel pick up tube.
Fuel fill tube.
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 pick-up 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.
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.
Carefully use a lighter or heat gun to
permenently set the angle of the vent tube.
6) When satisfied with the alignment of
the stopper assembly tighten the 3 x 20mm
machine screw until the rubber stopper expands and seals the tank opening. Do not
overtighten the assembly as this could cause
the tank to split.
FUEL TANK INSTALLATION.
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.
Tie Wrap.
Fuel tank.
Fuel pick-up tube.
Fuel fill tube.
Vent tube.
GEEBEE. Instruction Manual
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6) Attach the Z-Bend in the pushrod wire to
the throttle arm on the carburetor .
5) Bolt the engine to the engine mount using
the four machine screws. Double check that
all the screws are tight before proceeding.
155mm
.
4.2 mm
diameter.
Machine Screw 4x30mm.
Pushrod wire.
INSTALLING THE BATTERY.
Battery.
Tie Wrap.
1) Install the pushrod housing through the
predrilled hole in the firewall and into the servo
compartment. The pushrod housing should
protrude 1/4" out past the front of the firewall.
Make a Z-Bend 1/4" from one end of the plain
wire pushrod.
MOUNTING THE ENGINE.
4) Remove the engine. Using an drill bit,
drill the mounting holes through the engine
mount at the four locations marked.
2) Place your engine onto the engine
mount. Adjust the engine is centered of the
edges of the engine case.
3) When you are satisfied with the alignment, mark the locations of the engine
mounting.
Epoxy.
Battery tray.
Blow through one of the lines to ensure
the fuel lines have not become kinked inside the fuel tank compartment. Air should
flow through easily.
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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.
3) Install the muffler and muffler extension
onto the engine and make the cut out in the
cowl for muffler clearance. Connect the fuel
and pressure lines to the carburetor, muffler
and fuel filler valve. Secure the cowl to fuselage using the 3x10mm screws (4).
Because of the size of the cowl, it may be necessary to use a needle valve extension for the
high speed needle valve. Make this out of sufficient 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.
Trim and cut.
COWLING INST ALLA TION.
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 then trim
and cut.
Trim and cut.
Dummy
Engine.
Silicon
glue.
Cowling.
Dummy
Engine.
Dummy
Engine.
Machine Screw 3x10mm.
GEEBEE. Instruction Manual
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INSTALLING THE SWITCH.
Install the switch into the precut hole in the
side of fuselage.
THROTTLE SERVO ARM INSTALLATION.
Install adjustable servo connector in the servo
arm .
2) Secure the servos with the screws provided with your radio system.
INSTALLING THE FUSELAGE SERVO.
1) Install the rubber grommets and brass
collets onto the throttle servo. T est fit the servo
into the aileron servo mount.
Switch.
Throttle servo.
Elevator servo.
Elevator servo.
Rudder servo.
Adjustable Servo
connector.
Servo arm.
Loctite secure.
1 pcs.
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
.
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Elevator servo arm.
Installing the aileron servo in place using the
same techniques used to flap servo.
Attach the string to the servo lead and carefully thread it though the wing.
String.
Small Weight.
Wing.
Wing rib.
Throttle servo arm.
Elevator servo arm.
Rudder servo arm.
INSTALLING THE AILERON SERVOS.
Servos.
Small weight.
Thread.
String.
Small weight.
Electric wire.
Aileron
Servo.
String.
Small Weight.
AILERON PUSHROD HORN INST ALLA TION
Wing.
Aileron.
M2 lock nut.
M2 clevis.
75mm.
110mm.
GEEBEE. Instruction Manual
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Repeat the procedure for the other wing.
Wing.
Aileron.
M2 lock nut.
WING ASSEMBLY.
NOTE: We highly recommend using 30
minute epoxy as it is stronger and provides
more working time, allowing the builder to
properly align the parts. Using fast cure epoxy
when joining the wing halves could result in the
glue drying before the wing halves are aligned
properly which may result in failure of the wing
centre section during flight.
1) Test fit the wing tube into each wing half.
The brace should slide in easily up to the
centreline that you drew. If not, use 220 grit
sandpaper with a sanding block and sand
down the edges and ends of the brace until it
fits properly.
Masking tape.
Epoxy.
Aileron.
Wing.
Wing.
Aileron.
Carefully slide the two wing halves together
and firmly press them together, allowing the
excess epoxy to run out. There should not be
any gap in the wing halves. Use rubbing
alcohol and a paper tower to clean up any
excess epoxy.
Apply masking tape at the wing join to hold
the wing halves together securely .
2) Remove the brace when satisfied with its
fit ineach wing half. Coat the dihedral brace
with 30 minute epoxy. Next, pour some epoxy
into the dihedral box in one wing panel. Make
sure you cover the top and bottom as well as
the sides of the dihedral brace.Use enough
epoxy to fill any gaps.
Epoxy.
Epoxy.
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Epoxy.
3) Peel off the backing from the self adhesive covering strip. Apply the strip to the centre
section of the wing starting from the bottom
trailing edge. Wrap the strip all the way around
the wing until it meets the trailing edge again.
Trim off any excess strip.
Remove the covering.
Remove covering.
Pen.
When cutting through the covering to
remove it, cut with only enough pressure
to only cut through the covering itself. Cutting into the balsa structure may weaken
it.
Masking tape.
INST ALLING THE HORIZONTAL STABILIZER.
Hinge slot.
Center line.
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90º
Vertical
Stabilizer.
Horizontal
Stabilizer.
Put the vertical stabilizer into the in the top
of the horizontal fin. The bottom edge of the
stabilizer should also be firmly pushed against
the top of the horizontal stabilizer .
Remove covering.
Fill epoxy.
Hinge.
INST ALLING THE VERTICAL ST ABILIZER.
Epoxy.
Hinge.
C/A glue.
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1) Using a modeling knife, remove the
covering from over the two main gear mounting slots located in the bottom of the wing.
2) Insert the 90º bend of one main gear
wire into the predrilled hole in one mounting
slot.
INSTALLING THE MAIN GEAR WIRES.
3) Using the two landing gear straps as a
guide, mark the locations of the four 3 x 10mm
mounting screws onto the wing surface.
Install the landing gear.
M3 x 30mm.
Wing botom.
Remove the covering.
Spring landing gear .
Wing botom.
M3x15mm.
1
1
11mm.
9mm.
GEEBEE. Instruction Manual
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Turnbuckle.
WHEEL PANT INSTALLATION.
Epoxy .
Screw
M3x30mm.
Install wooden tray to right position.
Install fibre glass wheel pants.
Trim and cut
Set of fibreglass wheel pants.
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11mm.
9mm.
Install wheel to the
landing gear.
Screw M3x10mm.
Drill diameter =12mm.
Screw the wheel pants.
GEEBEE. Instruction Manual
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L1.
L2.
L1.
L2.
L1 = 35cm
L
2
= 50cm
2
1
2
L1.
L2.
Calbe trust.
2
1.
Fix cable to the bottom wing.
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ELEV ATOR- RUDDER PUSHROD HORN INST ALLA TION.
Elevator control horn.
Rudder control horn.
1) Elevator and rudder pushrods assembly follow pictures below.
GEEBEE. Instruction Manual
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Attach to servo arm in fuselage.
M2 clevis. M2 Lock nut.
Attach to elevator - rudder control horn.
2) Connect the elevator and rudder servos
to your radio’s receiver and turn on the system. Set the trim tabs on the transmitter to
neutral and center the servo arms. The elevator and rudder servo arms should be perpendicular to the servos.
3) One at a time, hold the pushrods in position over the respective servos to check for
proper servo direction. If any servo turns in
the wrong direction, switch your radio’s reversing switches as necessary to achieve the
correct direction.
Elevator.
Elevator.
Rudder.
Throttle.
Switch.
Elevator pushrod.
Rudder pushrod.
Control horn.
Metal clevis.
M2 lock nut.
Elevator pushrod.
Rudder pushrod.
Elevator.
Elevator.
Rudder.
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4) Install servos arm to servos. Notice the
position of the servo arms on the servos. See
picture below.
MOUNTING THE CONTROL CLASP.
3 x 12mm diametter.
Control clasp.
2 MM x 20 MM.
Machine Screw
pen
See pictures below:
WING FILLET INSTALLATION.
Trim and cut.
C/A glue.
GEEBEE. Instruction Manual
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Antenna.
Bolt the wing to fuselage.
C/A glue.
Receiver.
Tie Wrap.
1) Plug the six servo leads and the switch
lead into the receiver. Plug the battery pack
lead into the switch also.
3) Route the antenna in the antenna tube
inside the fuselage and secure it to the bottom of fuselage using a plastic tape.
C/A glue.
2) Wrap the receiver and battery pack in
the protective foam rubber to protect them
from vibration.
Epoxy.
INSTALLING THE BATTERY-RECEIVER.
ATTACHMENT WING - FUSELAGE.
Trim and cut.
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C/A glue.
Wing bolt.
1) It is critical that your airplane be balanced correctly . Improper balance will cause
your plane to lose control and crash. The cen-
ter of gravity is locate
9cm back from the lead-
ing edge of the wing, measured at wing tip.
2) If the nose of the plane falls, the plane
is nose heavy. To correct this first move the
battery pack further back in the fuselage. If
this is not possible or does not correct it, stick
small amounts of lead weight on the fuselage
sides under the horizontal stabilizer . If the tail
of the plane falls, the plane is tail heavy .
T o correct this, move the battery and receiver
forward orif this is not possible, stick weight
onto the firewall.When balanced correctly , the
airplane should sit level or slightly nose down
when you lift it up with your fingers.
BALANCING.
2) Turn on the radio system, and with the
trim tabs on the transmitter in neutral, center
the control surfaces by making adjustments
to the clevises or adjustable servo connectors.
The servo arms should be centered also.
1) We highly recommend setting up the
GEEBEE using the control throws listed at
right. We have listed control throws for both
Low Rate (initial test flying/sport flying) and
High Rate (aerobatic flying).
CONTROL THROWS.
9 cm.
GEEBEE. Instruction Manual
24
3) When the elevator, rudder and aileron
control surfaces are centered, use a ruler and
check the amount of the control throw in each
surface. The control throws should be
measured at the widest point of each surface!
INITIAL FL YING
AEROBA TIC FL YING
4) By moving the position of the adjustable control horn out from the control surface,
you will decrease the amount of throw of that
control surface. Moving the adjustable control horn toward the control surface will increase the amount of throw.
FLIGHT PREPARATION.
Do not use the aerobatic settings for
initial test flying or sport flying.
A) Check the operation and direction of
the elevator, rudder, ailerons and throttle.
B) Plug in your radio system per the
manufacturer's instructions and turn everything on.
E)Check the throttle. Moving the throttle
stick forward should open the carburetor barrel. If it does not, flip the servo reversing switch
on your transmitter to change the direction.
D) Check the rudder. Looking from behind the airplane, move the rudder stick to the
right. The rudder should move to the right. If it
does not, flip the servo reversing switch on
your transmitter to change the direction.
C) Check the elevator first. Pull back on
the elevator stick. The elevator halves should
move up. If it they do not, flip the servo reversing switch on your transmitter to change
the direction.
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8) Properly balance the propeller . An out
of balance propeller will cause excessive vibration which could lead to engine and/or airframe failure.
We wish you many safe and enjoyable
flights with your GEEBEE .
7) Check the receiver antenna. It should
be fully extended and not coiled up inside the
fuselage.
5) If your radio transmitter is equipped
with dual rate switches double check that they
are on the low rate setting for your first few
flights.
6) Check to ensure the control surfaces
are moving the proper amount for both low
and high rate settings.
2) Check every bolt and every glue joint
in the
GEEBEE to ensure that everything is
tight and well bonded.
3) Double check the balance of the airplane. Do this with the fuel tank empty .
4) Check the control surfaces. All should
move in the correct direction and not bind in
any way.
PREFLIGHT CHECK.
1) Completely charge your transmitter
and receiver batteries before your first day of
flying.
F)From behind the airplane, look at the
aileron on the right wing half. Move the aileron
stick to the right. The right aileron should move
up and the other aileron should move down. If
it does not, flip the servo reversing switch on
your transmitter to change the direction.
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