Seagull Models NIEUPORT 28 REPLICA User manual

1
Specications:
Wingspan--------------- 68.0 in (172.7 cm).
Wing area--------------- 1155.7 sq.ins (74.6 sq.dm).
Weight------------------- 12.8-13.2 lbs (5.8-6.0 kg).
Length------------------- 55.0 in (139.8 cm).
Engine/Motor size----- 20-26cc gasoline.
Radio--------------------- 5 channels with 6 servos.
ASSEMBLY MANUAL
Code : SEA 303

NIEUPORT 28 REPLICA Instruction Manual.
2
ank you for choosing the NIEUPORT 28 REPLICA ARTF by SG MODELS . e
NIEUPORT 28 REPLICA was designed with the intermediate/advanced sport yer
in mind. It is a semi scale airplane which is easy to y and quick to assemble. e air-
frame is conventionally built using balsa, plywood to make it stronger than the av-
erage ARTF, yet the design allows the aeroplane to be kept light. You will nd that
most of the work has been done for you already. e motor mount has been tted and
the hinges are pre-installed. Flying the NIEUPORT 28 REPLICA is simply a joy.
is instruction manual is designed to help you build a great ying aeroplane. Please read
this manual throughly before starting assembly of your NIEUPORT 28 REPLICA Use the
parts listing below to indentify all parts.
Please be aware that this aeroplane is not a toy and if assembled or used incorrectly it is ca-
pable of causing injury to people or property. WHEN YOU FLY THIS AEROPLANE YOU
ASSUME ALL RISK & REPONSIBILITY.
If you are inexperienced with basic R/C ight we strongly recommend you contact your R/C
supplier and join your local R/C model Flying Club. R/C Model Flying Clubs oer a variety
of training procedures designed to help the new pilot on his way to successful R/C ight.
ey will also be able to advise on any insurance and safety regulations that may apply.
INTRODUCTION.
WARNING.
KIT CONTENTS.
1
2
5
8
7
6
3
4
2
2
3
4

3
KIT CONTENTS.
SEA303 NIEUPORT 28 REPLICA
1. Fuselage
2. Upper wing set
3. Lower wing set
4. Tail set
5. Cowling
6. Aluminum wing tube
7. Windshield and pilot
8. Landing gear
ADDITIONAL ITEMS REQUIRED.
TOOLS & SUPPLIES NEEDED.
in cyanoacrylate glue.
Medium 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.
read-lock.
Paper towels.
�20-26cc gasoline engine.
�Computer radio 6 with chanlel 8
servos.
�Glow plug to suit engine.
�Propeller to suit engine.
�Protective foam rubber for radio
system.
HINGING THE AILERON.
Note : e control surfaces, including the ailer-
ons, 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 us-
ing 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 wing
panel until the T-pin is snug against the wing
panel. is will help ensure an equal amount
of hinge is on either side of the hinge line
when the aileron is mounted to the aileron.
T-pin.
Hinge.
1.
2.
3) Slide the wing panel on the aileron un-
til there is only a slight gap. e hinge is
now centered on the wing panel and ai-
leron. Remove the T-pins and snug the
aileron against the wing panel. A gap of
1/64” or less should be maintained be-
tween the wing panel and aileron.

NIEUPORT 28 REPLICA Instruction Manual.
4
NOTE : e hinge is constructed of a spe-
cial 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.
5) Turn the wing panel over and deect 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 ai-
leron hinge area.
7) Repeat this process with the other
wing panel, securely hinging the aileron
in place.
8) Aer both ailerons are securely hinged,
rmly grasp the wing panel and aileron to
make sure the hinges are securely glued
and cannot be pulled out. Do this by care-
fully applying medium pressure, trying to
separate the aileron from the wing panel.
Use caution not to crush the wing struc-
ture.
Work the aileron up and down sev-
eral times to “work in” the hinges
and check for proper movement.
Note :
4) Deect the aileron and completely sat-
urate each hinge with thin C/A glue. e
ailerons front surface should lightly con-
tact the wing during this procedure. Ide-
ally, 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.
INSTALL THE AILERONS
CONTROL HORN.
Fiberglass control horn
Hinge.
C/A glue.
2.
3.
5.
1.
4.
Epoxy.

5
Ailerons control horn
Epoxy.
3.
INSTALLING THE ALLERON SERVOS.
1.
Because the size of servos dier, you
may need to adjust the size of the precut
opening in the mount. e notch in the
sides of the mount allow the servo lead to
pass through.
1) Using a small weight (Weighted fuel
pick-up works well) and string, feed the
string through the wing as indicated.
2.
2) Use dental oss to secure the connec-
tion so they cannot become unplugged.
3) 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.
3.
4.
5.
6.
Ask the customer to use this machine.
Torque : 80 oz-in (5.8 kg-cm) @ 4.8V;
100 oz-in (7.2 kg-cm) @ 6.0V

NIEUPORT 28 REPLICA Instruction Manual.
6
AILERON PUSHROD INSTALLATION.
Please see below pictures.
7.
8.
9.
10.
1.
2.
3.
4.
30mm

7
2) Secure the servos with the screws
provided with your radio system.
.
INSTALLING THE FUSELAGE SERVOS.
.
Because the size of servos dier, you
may need to adjust the size of the precut
opening in the mount. e notch in the
sides of the mount allow the servo lead to
pass through.
1) Install the rubber grommets and brass
collets into all servos. Test t the servos
into the fuselage servo mounts.
Elevator servo. rottle servo.
Rudder servo arm.
rottle servo arm.
THROTTLE SERVO ARM
INSTALLATION.
Install adjustable servo connector in the
servo arm as same as picture below:
1.
1.
2.
Rudder servo.
Elevator servo.
Elevator servo arm .
Elevator servo arm.
INSTALLING THE RECEIVER SWITCH.
Install the switch into the precut hole in
the side, in the fuselage.
3/32” Hole.
.
INSTALLING THE ENGINE SWITCH.
Trim and cut.
Switch.
1.
2.
3.
Trim and cut.
1.

NIEUPORT 28 REPLICA Instruction Manual.
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Please see these below pictures.
Switch.
INSTALLING THE MAIN LANDING
GEAR TO FUSELAGE.
2.
1.
2.
3.
4.
5.
6.
7.
8.

9
INSTALLING THE STOPPER
ASSEMBLY.
1) Using a modeling knife, carefully cut
o the rear portion of one of the 3 nylon
tubes leaving 1/2” protruding from the
rear of the stopper. is 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 pick up and
the other end to the nylon pick up tube.
1.
9.
10.
11.
12.
13.
14.
M3x4

NIEUPORT 28 REPLICA Instruction Manual.
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2.
FUEL TANK INSTALLATION.
7) Slide the fuel tank into the fuselage. Guide
the lines from the tank through the hole in
the ewall.
3) Carefully bend the second nylon tube up
at a 45º angle. is tube is the vent tube.
4) Test t the stopper assembly into the tank.
It may be necessary to remove some of the
ashing around the tank opening using a
modeling knife. If ashing is present, make
sure none falls into the tank.
6) When satised with the alignment of the
stopper assembly tighten the 3 x 20mm ma-
chine screw until the rubber stopper expands
and seals the tank opening. Do not overtight-
en the assembly as this could cause the tank
to split.
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. e top of the vent tube should rest just
below the top of the tank. It should not touch
the top of 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 dilt to determine which is which.
2.
3.
4.
3.
1.
Vent tube.
Fuel ll tube.
Fuel pick up tube.

11
Nylon M4x25mm.
5.
6.
Fuel pick up tube. Fuel ll tube.
Vent tube.
7.
8.
ENGINE MOUNT INSTALLATION.
1) Locate the items necessary to install
the engine mount included with your
model.
8) Connect the lines from the tank to the
engine and mu.  vent line will con-
nectto the mu and the line from the
clunk tothe carburetor.
Blow through one of the lines to ensure
the fuel lines have not become kinked inside
the fuel tank compartment. Air should w
through easily.
1.
2) Use four 4x30mm head bolts and four
4mm washers to attach the engine mount
rails to the ewall. Tighten the screws
. Make sure to use threadlock on the
screws to help prevent them from vibrat-
ing loose.
2.
Balsa wood.
ead locker glue.

NIEUPORT 28 REPLICA Instruction Manual.
12
1) Position the engine with the drive
washer (145mm) forward of the ewall as
shown.
145mm
2) Use a pin drill and 4mm drill bit to drill
a small indentation in the mount for the
engine mounting screw.
1.
3) Use a drill to drill the four holes in the
engine mount rails.
4mm
4) On the e wall has the location for the
throttle pushrod tube (pre-drill).
5) Slide the pushrod tube in the ewall
and guide it through the fuel tank mount.
Use medium C/A to glue the tube to the
ewall and the fuel tank mount.
6) Connect the Z-bend in the 450mm
throttle pushrod to the outer hole of the
carburetor arm.
7) Slide the throttle pushrod wire into
the tube. Position the engine between
thmounts. Use four M4x30mm machine
screws to secure the engine to the mount
as shown.
4mm
Machine screw M4x30mm
Pushrod wire.
5.
2.
3.
4.
MOUNTING THE ENGINE.
3.

13
6.
7.
8) Reinstall the servo horn by sliding the
connector over the pushrod wire. Cent-
er the throttle stick and trim and install
the servo horn perpendiular to the servo
center line.
9) Move the throttle stick to the closed po-
sition and move the carburetor to closed.
Use a 2.5mm hex wrench to tighten the
screw that secures the throttle pushrod
wire. Make sure to use threadlock on the
screw so it does not vibrate loose.
8.
9.
COWLING.
Please see below pictures.
1.
2.
3.

NIEUPORT 28 REPLICA Instruction Manual.
14
1) Tape the cowl to the fuselage using
low-tack tape.
2) Use a drill and drill bit to drill the holes
for the cowl mounting screws. Make sure
the cowl position is correct before drilling
each hole.
3) With the mu, needle valve, and spark/
glow plug removed from the engine, slide
the cowl in place over the engine. Tem-
porarily install the propeller and spinner
in order to d the exact location of the
cowl. When satisd with the cowl place-
ment, secure the cowl to the fuselage us-
ing masking tape.
4) Install the mu and mu extension
onto the engine and make the cutout in
the cowl for mu clearance. Connect the
fuel and pressure lines to the carburetor,
mu and fuel ler valve. Secure the cowl
to fuselage using the M3x10mm socket
head screws.
6.
7.
4.
5.
8.
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-
cient 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.
9.
M3x10mm

15
10.
1.
ELECTRIC POWER CONVERSION.
1) Locate the items neccessary to install
the electric power conversion included
with your model.
3) Attach the electric motor box to the
rewall suitable with the cross lines
drawn on the electric motor box and re-
wall. Using M4x25mm to secure the mo-
tor box to the rewall. Please see pictures
below.
You follow the same pattern on page 18
to drill hole mounted motor.
- Motor: 110 - 2000 Watts
- Propeller: 17x8 ~ 19x10
- ESC: 850A
- 8S- 9S Lipo
4) Attach the motor to the front of the
electric motor box using four 4mm blind
nut, four M4x20mm hex head bolts to se-
cure the motor. Please see picture shown.
M4x25mm and washers.
2.
3.
4mm
4.
5.

NIEUPORT 28 REPLICA Instruction Manual.
16
en, use 5.5mm drill bit to enlarge the
holes on the electric motor box.
5.5mm
Blind nut.
6.
7.
145mm
Epoxy.
Balsa stick.
6) Attach the speed control to the side of
the motor box using two-sided tape and
tie wraps. Connect the appropriate leads
from the speed control to the motor. Make
sure the leads will not interfere with the
operation of the motor.
5) Attach the motor to the front of the
electric motor box using four 4mm blind
nut, four M4x20mm hex head bolts to se-
cure the motor. Please see picture shown.
8.
9.
10.
11.
12.
Speed cotrol.
M4x20mm

17
INSTALLING THE SPINNER.
Install the spinner backplate, propeller
and spinner cone.
Battery.
13.
14.
15.
16.
1.
e 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 propel-
ler comes in contact with it.
HINGING THE ELEVATOR.
Glue the elevator hinges in place using
the same techniques used to hinge the ai-
lerons.
2.
1.

NIEUPORT 28 REPLICA Instruction Manual.
18
INSTALLING THE 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
triangle 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.
ElevatorFiberglass control horn.
2.
3.
4) With the stabilizer held rmly 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 le sides and top and
bottom of the stabilizer.
2) Using a modeling knife, carefully
rmove the covering at mounting slot of
horizontal stabilizer (both side of fuse-
lage).
3) Slide the stabilizer into place in the
precut slot in the rear of the fuselage. e
stabilizer should be pushed rmly against
the front of the slot.
1.
2.
3.
Epoxy.
Epoxy.
Draw center line.
Cut.
INSTALL ELEVATOR CONTROL HORN.
Fiberglass control horn.
1.

19
4.
Pen.
5) Remove the stabilizer. Using the lines you
just drew as a guide, carefully remove the
covering from between them using a mod-
eling knife.
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.
6) Using a modeling knife, carefully remove
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.
Trim and Cut.
5.
6.
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
measurements once more before 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.
Fill Epoxy.
7.
8.
Epoxy.
Repeat steps to install the rudder control
horn as same as steps done for ailerons.
INSTALL RUDDER CONTROL HORN.

NIEUPORT 28 REPLICA Instruction Manual.
20
Fiberglass control horn.
Rudder Fiberglass control horn.
1.
2.
3.
1.
INSTALLING VERITICAL FIN.
1) While holding the vertical stabilizer
rmly 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) Using a modeling knife, remove the
covering from over the precut hinge slot
cut into the lower rear portion of the fu-
selage.
Epoxy.
2.
3.
4.