Specifications:
Wing span ------------------------------98.4in (250cm).
Wing area ----------------1576.4sq.in (101.7sq dm).
Weight ----------------------13.2-15.4lbs (6.0-7.0kg).
Length ------------------------------67.3in (171.0cm).
Engine ------------------ -----------33-40cc.
Radio -------------------6 channels with 7 servos.
“Graphics and specifications may change without notice”.
MS:176
ASSEMBL Y MANUAL
ERCOUPE Instruction Manual.
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INTRODUCTION.
Thank you for choosing the ERCOUPE ARTF by SEAGULL MODELS COMPANY LTD. The
ERCOUPE 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 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 ERCOUPE 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 ERCOUPE. 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.
KIT CONTENTS
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4
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ADDITIONAL ITEMS REQUIRED..
Engine 33cc-40cc.
Computer radio with 7servos.
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.
KIT CONTENTS.TS
1 Fuselage
2 Wing Set
3 Tail Set
4 Cowling
5 Main Landing Gear
6 Wing Tube
7 Hardware Set
8 Fiberglass Wheel Pants
9 Canopy
10 Pilot
11 Fuel Tank
Aileron control horn.
INSTALL THE AILERONS CONTROL
HORN.
1) Locate the hardware necessary to install
the control horns for the ailerons.
Fiberglass control horn.
2)Position the Control horn on the Aileron
and use 30-minute Epoxy
Epoxy .
Install the elevator control horn using the
same method as same as the aileron control
horns.
INSTALL ELEVATOR CONTROL HORN.
Fiberglass control horn.
ERCOUPE Instruction Manual.
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Adjustable Servo
connector.
Servo arm.
Loctite secure.
1 PCS.
INSTALLING THE FUSELAGE SERVOS.
Throttle servo.
1) Install the rubber grommets and brass
collets onto the throttle servo. T est fit the servo
into the aileron servo mount.
2) Secure the servos with the screws provided with your radio system.
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.
THROTTLE SERVO ARM INSTALLATION.
Install adjustable servo connector in the servo
arm as same as picture below:
Rudder control horn.
Epoxy .
Elevator control horn.
Position the Control horn on the Aileron and
use 30-minute Epoxy
INSTALL RUDDER CONTROL HORN.
Repeat steps to install the rudder control horn
as same as steps done for ailerons.
Fiberglass control horn.
Epoxy .
Nose Retractable servo.
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Throttle servo arm.
3/ 32” Hole.
INSTALLING THE SWITCH.
Install the switch into the precut hole in the
side, in the fuselage.
Trim and cut.
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.
INSTALLING THE ST OPPER ASSEMBL Y.
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.
Nose Retractable servo arm.
Vent tube.
Fuel pick up tube.
Fuel fill tube.
Switch
ERCOUPE Instruction Manual.
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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.
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.
3) Carefully bend the second nylon tube
up at a 45º angle. This tube is the vent 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.
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.
FUEL TANK INSTALLATION.
7) Slide the fuel tank into the fuselage. Guide
the lines from the tank through the hole in the
firewall.
Fuel tank.
8) Use plywood template to hold in place
the fuel tank with C/A glue to secure the fuel
tank inside the fuselage.
C/A glue.
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.
Vent tube.
Fuel pick up tube.
Fuel fill tube.
9) Connect the lines from the tank to the engine
and muffler. The vent line will connect to the
muffler and the line from the clunk to the
carburetor.
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MOUNTING THE ENGINE.
5 x 80 mm
5x80mm.
Screw.
150mm
5.2mm
ERCOUPE Instruction Manual.
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NOSE LANDING GEAR
INSTALLTION.
1)Locate the items necessary to attach the
nose landing gear that are included with your
model.
2)Install nose landing gear and wheel pant.
Thread locker glue.
Screw.
M3x25mm.
Drill hole.
Screw.
Screw.
5.2mm
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3)Install nose landing gear at the top
Fuselage.
Axle.
wheel collar
wheel
Screw.
3)Install nose landing gear at the top
Fuselage.
ERCOUPE Instruction Manual.
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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.
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 as shown.
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2
Crimp.
Cableend.
M3
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INSTALLING THE SPINNER.
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.
Machine screw M3x10mm.
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 fuselage using the M3x10mm screws.
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.
INSTALLING THE AILERON - FLAP SER VOS.
ERCOUPE Instruction Manual.
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6) Secure the servo to the aileron hatch using
Phillips screwdriver and the screws provided
with the servo.
7) Apply 1-2 drops of thin C/A to each of the
mounting tabs. Allow the C/A to cure without
using accelerator.
Servos.
Small weight.
Thread.
1) Using a small weight (Weighted fuel pick-up
works well
) and string, feed the string through
the wing as indicated.
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.
String.
Small weight.
2) Place the servo between the mounting
blocks and space it from the hatch. Use a pencil
to mark the mounting hole locations on the
blocks.
3) Use drill bit in a pin vise to drill the mouting
holes in the blocks.
4) Apply 2-3 drops of thin C/A to each of the
mounting holes. Allow the C/A to cure without
using accelerator.
5) Use dental floss to secure the connection
so they cannot become unplugged.
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9) Set the aileron hatch in place and use a
Phillips screw driver to install it with four wood
screws.
8) A string has been provided in the wing to
pull the aileron lead through to the wing root.
Remove the string from the wing at the servo
location and use the tape to attach it to the
servo extension lead. Pull the lead through the
wing and remove the string.
2x10
Wing.
M3 lock nut.
90mm.
Aileron.
AILERON PUSHROD HORN INSTALLA TION
ERCOUPE Instruction Manual.
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LANDING GEAR INST ALLTION.
1)Locate the items necessary to attach the
landing gear that are included with your model.
1)Locate the items necessary to attach the
landing gear that are included with your model.
2 mm
M3 X 25 mm
Thread locker glue
Epoxy
Epoxy
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5.2mm
5.2mm
Thread locker glue
3x10 mm
2mm
ERCOUPE Instruction Manual.
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TAIL SET INSTALLTION.
ATTACHMENT TAIL SET-FUSELAGE.
Epoxy
Epoxy
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M2 lock nut.
M2 clevis.
40mm.
.
4) Elevator and rudder pushrods assembly
as pictures below.
3) Thread one clevis and M3 lock nut on
to each elevator control rod. Thread the horns
on until they are flush with the ends of the control rods.
Elevator pushrod.
2 pcs.
Elevator control horn.
ELEVATOR PUSHROD HORN
INSTALLATION.
1) Install the elevator control horn using
the same method as with the aileron control
horns.
2) Position the elevator control horn on
the both side of elevator.
Control horn.
M2 lock nut.
Metal clevis.
Elevator pushrod.
ELEVATOR PUSHROD HORN
INSTALLATION.
M2 lock nut.
M2 clevis.
50mm.
Rudder pushrod.
1 pcs.
4x45mm
ERCOUPE Instruction Manual.
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- Apply a bead of canopy glue around the inside
edge of the canopy. Position the canopy onto
the hatch. Use tape to hold the canopy secure
until the glue fully cures.
2) If all the decals are not precut, please use
scissors or a sharp hobby knife to cut the
decals from the sheet. Please be certain the
model is clean and free from oily fingerprints
and dust. Position decal on the model where
desired, using the photos on the box and aid
in their location.
4) Position the canopy onto the fuselage. Trace
around the canopy and onto the fuselage using
a felt-tipped pen.
APPLY THE DECALS.
1) If all the decals are precut and ready to
stick. Please be certain the model is clean and
free from oily fingerprints and dust. Position
decal on the model where desired, using the
photos on the box and aid in their location.
Epoxy .
C/A glue.
M2x6mm.
3) Position the pilot figure on the canopy floor
as show. Locate the oval shaped on the canopy
floor and remove the covering. Use epoxy to
glue this into the base of the pilot figure and
glue the cockpit panel in place with C/A glue,
please see pictures as shown.
If you are going to install a pilot figure, please
use a sanding bar to sand the base of the figure
so that it is flat.
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M2x6mm.
INSTALLATION PILOT AND CANOPY.
1) Locate items necessary to install pilot,
cockpit panel, and canopy.
2) A scale pilot is included with this ARF. The
Seagull Pilot included fitting well to the cockpit.
(or you can order others scale pilot figures
made by Seagull factory. They are available at
Seagull distributors.)
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Wing bolt.
ATTACHMENT WING-FUSELAGE.
Wing tube.
Attach the aluminium tube into fuselage.
Insert two wing panels as pictures below.
Battery.
INST ALLING ANTENNA AND THE
BATTERY-RECEIVER.
1) Plug the five 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.
2) Wrap the receiver and battery pack in
the protective foam rubber to protect them
from vibration.
M4x20mm.
ERCOUPE Instruction Manual.
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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,
the model is “tail heavy” and you must add
weight* to the nose. If the nose drops, it is
“nose heavy” and you must add weight* to the
tail to balance.
Accurately mark the balance point on the top
of the wing on both sides of the fuselage. The
balance point is located
110 mm back from
the leading edge of the wing at the wing root.
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 .
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 LOCATED
110 MM BACK FROM THE LEADING EDGE
OF THE WING AT THE WING ROOT.
2) Mount the wing to the fuselage. Using a
couple of pieces of masking tape, place them
on the top side of the wing
110 mm back from
the leading edge of the wing at the wing root.
3) Turn the airplane upside down. Place
your fingers on the masking tape and carefully
lift the plane .
*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.
110mm.
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CONTROL THROWS.
Ailerons:
High Rate :
Up : 18 mm
Down : 18 mm
Low Rate :
Up : 10 mm
Down : 10 mm
Elevator:
High Rate :
Up : 18 mm
Down : 18 mm
Low Rate :
Up : 10 mm
Down : 10 mm
Rudder:
High Rate :
Right : 25 mm
Left : 25 mm
Low Rate :
Right : 20 mm
Left : 20 mm
ERCOUPE Instruction Manual.
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We wish you many safe and enjoyable
flights with your ERCOUPE.
7) Check the receiver antenna. It should
be fully extended and not coiled up inside the
fuselage.
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 .
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.
2) Check every bolt and every glue joint
in the ERCOUPE to ensure that everything is
tight and well bonded.
6) Check to ensure the control surfaces
are moving the proper amount for both low
and high rate settings.
1) Completely charge your transmitter
and receiver batteries before your first day of
flying.
D) 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.
E) 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.
C ) 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.
A) Plug in your radio system per the
manufacturer's instructions and turn everything on.
B) 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.
8) Properly balance the propeller. An out
of balance propeller will cause excessive vibration which could lead to engine and/or airframe failure.
PREFLIGHT CHECK.
Check the operation and direction of the
elevator, rudder, ailerons and throttle.
FLIGHT PREPARATION.
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