Seagull Models Magic Star 3D EP User manual

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ASSEMBLY MANUAL
Code: SEAX157
www.seagullmodels.com
“ Graphics and specications may change without notice “ .
MAGIC STAR 3D ELECTRIC POWER
wingspan 39”
Specications:
Wingspan---------------39 in (99.1 cm).
Wing area---------------432.5 sq.in (27.9 sq.dm).
Weight-------------------1.5-1.9 lbs (0.7-0.85 kg).
Length-------------------33.8 in (85.8 cm).
Motor size---------------450-180 size brushless
----------------------------30-amp brushless ESC
Radio---------------------4 channels with 4 sub -micro servos.

MAGIC STAR 3D EP Instruction Manual.
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ank you for choosing the MAGIC STAR 3D EP ARTF by SEAGULL MODELS
COMPANY LTD,. e MAGIC STAR 3D EP was designed with the intermediate/ad-
vanced sport yer in mind. It is a semi scale airplane which is easy to y and quick to as-
semble. e airframe is onventionally built using balsa, plywood to make it stronger
than the average 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 t-
ted and the hinges are pre-installed. Flying the MAGIC STAR 3D EP 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 MAGIC STAR 3D EP . User the arts
listing below to indentify all parts.
Please be awere that this aeroplane is not a toy and if assembley or used incorrectly it is
capable 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
5
2
3
3
2
4
6
7
8

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KIT CONTENTS.
SEAX157 MAGIC STAR 3D EP
SEAX15701 Fuselage
SEAX15702 Wing set
SEAX15703 Tail set
SEAX15704 Canopy
SEAX15705 Pilot
SEAX15706 Cowling
SEAX15707 Aluminum tube
SEAX15708 Landing gear
ADDITIONAL ITEMS REQUIRED.
450-480 size brushless coutrunner
motor
30-amp brushless ESC
Computer radio with 4 sub-micro
servos.
Glow plug to suit engine.
Propeller to suit engine.
Protective foam rubber for radio
system.
TOOLS & SUPPLIES NEEDED.
ick 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.
HINGING THE AILERON.
Note : e control surfaces, including the ai-
lerons, elevators, and rudder, are prehinged
with hinges installed, but the hinges are not
glued in place. It is imperative that you prop-
erly 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 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.
3) Slide the wing panel on the aileron until
there is only a slight gap. e hinge is now
centered on the wing panel and aileron. Re-
move 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.
Hinge.

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4) Deect the aileron and completely satu-
rate each hinge with thin C/A glue. e ailer-
ons 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 : 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.
C/A glue.
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 carefully ap-
plying medium pressure, trying to separate
the aileron from the wing panel. Use caution
not to crush the wing structure.
INSTALL THE AILERONS CONTROL
HORN.
Fiberglass control horn
Epoxy.
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 pa-
per towel, remove any excess C/A glue that
may have accumulated on the wing or in the
aileron hinge area.
7) Repeat this process with the other wing
panel, securely hinging the aileron in place.
Work the aileron up and down sev-
eral times to “work in” the hinges
and check for proper movement.
Note :

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Epoxy.
Aileron control horn.
INSTALLING THE AILERON SERVOS.
Servos
.
Small weight
.
Thread
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) 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.

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3) e pushrod wire will pass through
the hole in the micro screw-lock connec-
tor. Use side cutters to trim the pushrod
so it is past the connector as shown.
2) Pass the Z-bend pushrod through the
hole of the control horn.
AILERON PUSHROD HORN
INSTALLATION.
1) Use a very small amount of medium
CA to secure the nut to the bottom of the
connector threads. Do not use thin CA
for ths step as it can wick through the nut
and glue the conector to the arm. Make
sure the conector still rotates freely in the
am aer the glue is cured.
CA glue.

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Repeat steps to install the remaining ai-
leron control horn and pushrod.
1) e blind nuts for securing the land-
ing gear are already mounted inside the
fuselage.
2) Using the hardware provided, mount
the main landing gear to the fuselage.
3) Place the fuselage inverted on the
workbench in a suitable stand. Set the
landing gear in place and use a screw-
drive to secure the landing gear to the fu-
selage using bolts M3x15mm and wash-
ers. Make sure to use the threadlock on
the bolts so they don’t vibrate loose.
INSTALLING THE MAIN LANDING
GEAR TO FUSELAGE.
M3x15mm
read locker glue.
C/A glue.
M3x15mm
WHEELS AND WHEEL PANTS.
2) Follow diagram below for wheel pant
installation:
1) Locate the items neccessary to install
Use a drill and 8mm drill bit to drill a
hole in the wheel pants.
3) You have to trim each axle using a tool
cutting and cut-o wheel.
5) Place the wheel assembly in the wheel
pants. e threaded portion of the axle
will t the notch of the wheel pant as
shown.
4) Slide the collar to the axle and setscrew
the collars to secure the collar to the axle
and then slider the wheel on the axle with
a drop of oil on the axle so the wheel will
spin freely when installed. Prepare a sec-
ond collar and tighten the setscrew using
hex wrench to secure the collar to the
axle.
.
Drill a hole.
8mm
14mm

MAGIC STAR 3D EP Instruction Manual.
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Repeat steps to install remaining wheel
pants to the landing gear.
6) Slide the threaded end of the axle
through the hole in the bottom of the
landing gear leg. Use a washer and lock-
nut to tighten the axle to the landing gear.
Make sure to use threadlock on the nut so
it won’t vibrate loose in ight as shown.
7) Tighten the setcrews using a hex
wrench to secure the collars on the axle
over the at spot to retain the wheel as
shown.
ELECTRIC POWER CONVERSION.
1) Locate the items neccessary to install
the electric power conversion included
with your model.
2) Recommend the items necessary to in-
stall the electric power conversion parts
included with your model.
Wheel collar.
Wheel.
M3
Axle.
Washer.
Wheel. Wheel collar.
Washer.
nut.--
Lite-Plywood
block.
Wheel Pant.
C/A glue.
M3.
Axle.

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3) Attach the motor to the front of the
electric motor box using four 4mm blind
nut, four M3x10mm hex head bolts to se-
cure the motor. Please see picture shown.
.
Blind nut.
4) Attach the motor to the front of the
electric motor box using four 4mm blind
nut, four M3x10mm hex head bolts to se-
cure the motor. Please see picture shown.
M3x10mm
4 mm
76 mm
Epoxy
4 mm
Balsa stick.
Epoxy

MAGIC STAR 3D EP Instruction Manual.
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5) Attach the speed control to the side of
the motor box using hook and loop tape.
Connect the appropriate leads from the
speed control to the motor. Make sure the
leads will not interfere with the operation
of the motor.
6) Apply a piece of hook and loop tape to
the battery tray. Insert the hook and loop
strap through the slot in the battery tray
. Make sure not to get the motor and re-
ceiver leads inside the straps as they may
come accidentally disconnected when
you strap down the battery.
Speed control
COWLING.
1) Slide the berglass cowl over the en-
gine and line up the back edge of the cowl
with the marks you made on the fuselage
then trim and cut as shown.
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.

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2) While keeping the back edge of the cowl
ush with the marks, align the front of the
cowl with the cranksha of the engine. e
front of the cowl should be positioned so the
cranksha is in nearly the middle of the cowl
opening. Hold the cowl rmly in place using
pieces of masking tape.
3) Install the muer and muer extension
onto the engine and make the cutout in the
cowl for muer clearance. Connect the fuel
and pressure lines to the carburetor, muer
and fuel ller valve. Secure the cowl to fuse-
lage using the M2x8mm screws.
2x8mm
INSTALLING THE PROPELLER.
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.

MAGIC STAR 3D EP Instruction Manual.
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STABILIZER INSTALLATION.
1) Using a ruler and a pen, locate the cen-
terline 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.
.
2) Using a modeling knife, carefully re-
move 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.
Draw center line
4) With the stabilizer held rmly in place,
use a pen and draw lines onto the stabi-
lizer where it and the fuselage sides meet.
Do this on both the right and le 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
modeling knife.
When cutting through the covering to
remove it, cut with only enough pressure
to only cut through the covering itself. Cut-
ting into the balsa structure may weaken
it.
6) Using a modeling knife, carefully re-
move the covering that overlaps the sta-
bilizer mounting platform sides in the
fuselage. Remove the covering from both
the top and the bottom of the platform
sides.
Trim and cut
Epoxy

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7) Fit the joiner wire into the elevators.
Check to make sure the elevators are in
alignment with each other by placing the
assembly on a at surface. It may be nec-
essary to bend the joiner wire slightly to
align both elevator halves.
8) Place the joiner wire in the slot for the
stabilizer. Once the joiner is in position,
slide the stabilizer into the slot in the fu-
selage.
Epoxy.
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 top and bottom of the stabi-
lizer 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
thestabilizerin placewithT-pinsormask-
ing tape and remove any excess epoxy us-
ing a paper towel and rubbing alcohol.
VERTICAL FIN INSTALLATION.
1) Place the n in the slot on the top of the
fuselage. While holding the vertical stabiliz-
er 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.
Pen.
4) Remove the n from the fuselage. Using
a modeling knife, remove the covering from
below the lines you drew.
Knife.

MAGIC STAR 3D EP Instruction Manual.
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Remove the covering
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.
2) Place the n back in the slot on top of the
fuselage. Using a triangle, check to ensure
that the n is aligned 90º to the stabilizer.
3) Use a straight edge to make sure the n is
aligned with the rear of the fuselage.
1) Use a pin vise and drill bit to drill a hole
in the center of each hinge slot. is creates a
tunnel for the CA to wick into, creating a bet-
ter bond between the hinge and surrounding
wood. Prepare all of the hinge slots for the
vertical n, rudder, horizontal stabilizer, and
elevators.
90º
Vertical
Stabilizer.
Horizontal
Stabilizer.
4) When you are sure that everything is
aligned correctly, mix up a generous amount
of 30 Minute Epoxy. Apply a thin layer to
the mounting 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 ller block and
to the lower hinge also. Set 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. Al-
low the epoxy to fully cure before proceed-
ing.
Epoxy.
Epoxy.
RUDDER AND ELEVATOR
INSTALLATION.

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2) Place a T-pin in the center of four CA
hinges. Insert the hinges into the elevator as
shown. e T-pin will rest on the edge of the
bevel of the control surface. Prepare both el-
evators at this time.
3) Mix a small amount of 5-minute epoxy
and apply it to the joiner wire and into the
hole and slot inthe elevator.
T-pin.
Epoxy.
Epoxy.
4) Place both elevators into position once the
epoxy has been applied. Use a paper towel
and rubbing alcohol to remove any excess
epoxy before it begins to cure, Make sure to
check the alignment of the elevators to make
sure they are in alignment while the epoxy
cures.
5) Remove the T-pins from hinges. Position
the elevators so they move freely without the
counterbalances hitting the ends of the sta-
bilizer.
6) Saturate each of the hinges with thin CA
on both the top and bottom of the hinge. Set
the assembly aside to cure.

MAGIC STAR 3D EP Instruction Manual.
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7) Break in the hinges by working the stabi-
lizer up and down a number of times. is
will reduce the initial load on the servo when
the servo is connected for the rst time.
9) Slide the rudder into position, guiding the
tab on the tail wheel knuckle into the slot at
the bottom of the rudder.
10) Check to make sure the counterbalance
can move freely without hitting the top of
the n. Apply thin CA to each of the hinges.
Make sure to fully saturate both sides of the
hinges.
8) Fit the tail wheel assembly into the slot
at the bottom of the rudder. Use a small
amount of 5-minute epoxy to glue the tail
wheel into position in the rudder.
RUDDER AND ELEVATOR SERVO
INSTALLATION.
1) e process as aileron servo to install
servos for elevator.

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2) Locate position elevator control horn.
en, apply 2-3 drops of epoxy to the
backplate where it contacts control horn
to keep it from accidentally coming loose
in ight.
CA glue.
Epoxy.
3) Pass the Z-bend in the elevator push-
rod through the hole of the control horn.
4) Slide the pushrod into the hole in the
pushrod connector. And use side cutters
to trim the excess length of wire beyond
the connector as shown. Insert the con-
trol horn in the slot in the elevator.
Elevator control horn.
Elevator pushrod.

MAGIC STAR 3D EP Instruction Manual.
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Repeat steps to install the rudder servo.
Rudder control horn.
Rudder pushrod.
.
INSTALLATION PILOT AND CANOPY.
1) Locate items necessary to install pilot,
seats.
2) A scale pilot is included with this ARF.
e Seagull Pilot included tting well to
the cockpit. (or you can order others scale
pilot gures made by Seagull factory.
ey are available at Seagull distributors.)
If you are going to install a pilot gure,
please use a sanding bar to sand the base
of the gure so that it is at.
3) Position the pilot gure on the canopy
oor as show. Locate the oval shaped on
the canopy oor and remove the cover-
ing. Use epoxy to glue this into the base of
the pilot gure and glue the cockpit panel
in place with C/A glue, please see pictures
as shown.
Epoxy.
40mm
4) Position the canopy onto the fuselage.
Trace around the canopy and onto the fu-
selage using a felt-tipped pen.
C/A glue.
1) If all the decals are precut and ready to
stick. Please be certain the model is clean
and free from oily ngerprints and dust.
Position decal on the model where de-
sired, using the photos on the box and aid
in their location.
APPLY THE DECALS.

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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 cer-
tain the model is clean and free from oily
ngerprints and dust. Position decal on
the model where desired, using the pho-
tos on the box and aid in their location.
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 GRAV-
ITY IS LOCATED 89MM BACK
FROM THE LEADING EDGE OF
THE WING AT THE WING ROOT.
3) With the model upright, place your
ngers on the masking tape and carefully
li the plane.
2) Mount the wing to the fuselage. Using
a couple of pieces of masking tape, place
them on the bottom side of the wing
89mm back from the leading edge of the
wing at the wing root.
3) Insert two wing panels as shown.
WING INSTALLATION.
2) Slide the aluminum tube into the sock-
et in the fuselage.
Wing tube.
1) Remove covering from the fuselage by
using knife.
Wing bolt.

MAGIC STAR 3D EP Instruction Manual.
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Accurately mark the balance point on
the botttom of the wing on both sides of
the fuselage. e balance point is located
89 mm back from the leading edge of
the wing at the wing root. is is the bal-
ance point at which your model should
balance for your rst ights. Later, you
may wish to experiment by shiing the
balance up to 10mm forward or back to
change the ying characteristics. Mov-
ing the balance forward may improve the
smoothness and arrow- like tracking, but
it may then require more speed for take
o and make it more dicult to slow
down for landing. Moving the balance a
makes the model more agile with a light-
er 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
y), and empty fuel tanks, hold the model
at the marked balance point with the sta-
bilizer level.
Li the model. If the tail drops when
you li, 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.
*If possible, rst attempt to balance the
model by changing the position of the re-
ceiver battery and receiver. If you are un-
able 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.
CONTROL THROWS.
89 mm
Ailerons:
32mm - 51mm up.
32mm - 51mm down.
Elevator:
32mm - 70mm up.
32mm - 70mm down.
Rudder:
38mm - 70mm le.
38mm - 70mm right.
4) Do not turn plane upside down. Only
low wing models should be turned up-
sidedown for balancing. Remove this
paragraph, it is not intended for use in
the instructions. it is a note for you.High
Wing models must be balanced upright.