Seagull Models Mini MXS-R EP User manual

1
www.seagullmodels.com
ASSEMBLY MANUAL
MS: X128
Specifications:
Wingspan---------------------------35.4in(90cm).
Wingarea--------------226.3sq.in(14.6sqdm).
Weight----------------1.9-2.1lbs(0.85-0.95kg).
Length-----------------------------30.4in(77.2cm).
Speedcontrol(ESC)-------------15A-30Aamp.
Motor -------------------------------------- 450-480.
Radio-----------4channelswith5miniservos.
Battery3-cell 1800mAhto 2100mAhLi-Po.
10 x 5E Electric Prop.
“Graphics and specifications may change without notice”.

MINI MXS-R EP Instruction Manual.
2
INTRODUCTION.
Thank you for choosing the MINI MXS-R EP ARTF by SEAGULL MODELS COMPANY LTD. The
MINIMXS-REP wasdesignedwiththeintermediate/advancedsportflyerinmind.Itisa semiscale
airplane whichiseasytoflyandquicktoassemble.Theairframeisconventionallybuiltusingbalsa,
plywoodto make itstrongerthantheaverageARTF , yetthedesignallowstheaeroplane 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 MINI MXS-R EP 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 MINI MXS-R EP . 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.
IfyouareinexperiencedwithbasicR/CflightwestronglyrecommendyoucontactyourR/Csupplier
and join your local R/C Model Flying Club. R/C Model Flying Clubs offer a variety of training
proceduresdesigned to helpthenewpiloton his waytosuccessfulR/Cflight. They willalsobeable
to advise on any insurance and safety regulations that may apply.
KIT CONTENTS
1
2
9
3
4
5
5
8
6
7
10
11
12

3
www.seagullmodels.com
KIT CONTENTS.
1 Fuselage
2 Left wing panel
3 Right wing panel
4 Fiberglass cowl
5 Tail set
6 Landing gear
7 Wheel pants (2)
8 Wheel (2)
9 Spinner
10 Carbon fiber wing tube
11 Harware bag included.
12 Canopy
ADDITIONAL ITEMS REQUIRED.
Motor 450-480
4 channel radio with 5 mini servos
Propeller to suit engine
Propeller to suit motor
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.
HINGING THE AILERONS .
Note:
1) Carefully remove the aileron from one
of the wing panels. Note the position of the
hinges.
2)Removeeachhingefromthewingpanel
and aileron and place a T-pin in the center of
each hinge. Slide each hinge into the aileron
untiltheT-pin issnug againstthe aileron.This
will help ensure an equal amount of hinge is
oneither side ofthehingelinewhentheaileron
is mounted to the wing panel.
Hinge.
T-pin.
TOOLS & SUPPLIES NEEDED.
Thick cyanoacrylate glue
30 minute epoxy
5 minute epoxy
Hand or electric drill
Assorted drill bits
Modellingknife
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
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
shouldbemaintained between the wingpanel
andaileron.

MINI MXS-R EP Instruction Manual.
4
8)Afterboth ailerons are securelyhinged,
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.
6) Using C/A remover/debonder and a
papertowel,remove any excess C/A gluethat
may have accumulated on the wing or in the
aileronhinge area.
5)Turnthe wing panel over anddeflect the
aileron in the opposite direction from the
opposite side. Apply thin C/A glue to each
hinge,making surethattheC/A penetratesinto
both the aileron and wing panel.
Workthe aileron upand down several
times to “work in” the hinges and
check for proper movement.
Note:
HINGING THE ELEVATORS.
Glue the elevator hinges in place using the
same techniques used to hinge the ailerons.
4) Deflect the aileron and completely
saturate each hinge with thin C/A glue. The
aileronsfrontsurfaceshouldlightlycontactthe
wing during this procedure. Ideally, when
thehinges 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.
Hinge.
Thehinge 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.
Note:

5
www.seagullmodels.com
HINGING THE RUDDER.
Glue the rudder hinges in place using the
same techniques used to hinge the ailerons.
INSTALL THE AILERONS CONTROL
HORN.
Hinge.
Epoxy.
Aileronfiberglass
control horn .
INSTALL ELEVATOR CONTROL HORN.
Fiberglass
control horn.
Fiberglass
control horn.
INSTALL RUDDER CONTROL HORN.
Elevatorfiberglass
controlhorn.
Epoxy.
Epoxy.
Fiberglass
control horn.

MINI MXS-R EP Instruction Manual.
6
INSTALLING THE FUSELAGE SERVOS.
1) Installthe rubber grommetsand brass
colletsonto thethrottleservo. Testfit the servo
into the aileron servo mount.
 2) Secure the servos with the screws pro-
vided with your radio system.
Because the size of servos differ, you
mayneedto adjust the size of the precut open-
ing in the mount. The notch in the sides of the
mount allow the servo lead to pass through.
Rudder fiberglass
control horn.
Cut.
Elevator servo arm.
Rudder servo.
FUSELAGE SERVO ARM INSTALLATION.
Installadjustableservo connectorinthe servo
arm as same as picture below:
Elevator servo.
Rudder servo.
Cut.
WHEEL AND WHEEL PANTS.
1) Assembling and mounting the wheel
pants as shown below pictures.
Elevator servo arm.
Rudder servo arm.

7
www.seagullmodels.com
2) Follow diagram below for wheel pant
installation:
3) You have to trim each axle using a toll
cutting and cut-off wheel.
Cautionwhen cutting theaxles and wear
protective goggles.
INSTALLING THE MAIN LANDING GEAR
TO FUSELAGE.
 5) The blind nuts for securing the landing
geararealready mounted inside thefuselage.
 6) Using the hardware provided, mount
the main landing gear to the fuselage.
 7) Placethefuselageinvertedonthework-
benchinasuitablestand. Set the landing gear
in place and use a screwdrive to secure the
landing gear to the fuselage using bolts
M3x10mmandwashers.Makesuretousethe
threadlock on the bolts so they don’t vibrate
loose.
 4) A drop of C/A glue on the wheel collar
screws will help keep them from coming lose
duringoperation.
Repeat the process for the other wheel.
wheel Pant.
wheel.
M3.
wheel collar.
nut. Axle.
Washer.
Lite-Plywood
block.

MINI MXS-R EP Instruction Manual.
8
Cut.
Cut.

9
www.seagullmodels.com
C/Aglue.
C/Aglue.
M3x10mm.

MINI MXS-R EP Instruction Manual.
10
Servos.
Smallweight. Thread.
INSTALLINGTHEAILERON.
2) Place the servo between the mounting
blocksandspaceitfromthehatch.Useapencil
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.
1) Usinga small weight (Weightedfuelpick-up
workswell) andstring, feed the string through
the wing as indicated.
Because the size of servos differ, you
mayneed toadjustthesizeof theprecutopen-
ing in the mount. The notch in the sides of
themountallowtheservolead topassthrough.
4) Apply 2-3 drops of thin C/A to each of the
mounting holes.Allow the C/Ato cure without
using accelerator.
6) Secure the servo to the aileron hatch using
Phillips screwdriver and the screws provided
with the servo.
5) Use dental floss to secure the connection
so they cannot become unplugged.
7) Apply 1-2 drops of thin C/A to each of the
mounting tabs. Allow the C/A to cure without
using accelerator.

11
www.seagullmodels.com
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
servoextensionlead.Pull the lead throughthe
wing and remove the string.
9) Set the aileron hatch in place and use a
Phillips screw driver to install it with four wood
screws.
Aileronservo.

MINI MXS-R EP Instruction Manual.
12
M3 x 15mm.
Electric motor.
122mm.
4mm.
ELECTRIC POWER ASSEMBLY.
1) Locate the items neccessary to install the
electric power installation.
2) Attach the electric motor box to the firewall
suitable with the cross lines drawn on the electric
motor box and firewall. Using epoxy and balsa
stick to secure the motor box to the
firewall.Please see pictures below.
3) Attach the motor to the front of the electric
motor box using four 3mm blind nut, four
M3x15mm hex head bolts to secure the motor.
Please see picture shown.
Epoxy.
Balsa.
Epoxy.
15A-30A.
4mm.

13
www.seagullmodels.com
Battery.
4) Locate the plywood battery tray to the
fuselage.
Battery.
1800mAh-2100mAh.
Speed control.
5) 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.
Trim and cut.
1)Slide the fiberglasscowl over themotor
and line up the back edge of the cowl with the
marksyoumadeonthefuselagethentrimand
cut as shown.
COWLING.
2) While keeping the back edge of the
cowl flush with the marks, align the front of
thecowl with the crankshaft oftheengine. The
front of the cowl should be positioned so the
crankshaft is in nearly the middle of the cowl
opening.Use thespinnerbackplateasa guide.
Hold the cowl firmly in place using pieces of
masking tape.
Becauseofthe size of thecowl, it may benec-
essaryto use a needlevalve extensionfor the
highspeedneedlevalve. Make this out of suf-
ficient length 1mm wire and install it into the
end of the needle valve. Secure the wire in
placeby tightening the setscrew in theside of
the needle valve.

MINI MXS-R EP Instruction Manual.
14
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.
INSTALLING THE HORIZONTALSTABILIZER.
1) Using a ruler and a pen, locate the
centerlineofthehorizontalstabilizer,atthetrail-
ing edge, and place a mark. Use a triangle
and extend this mark, from back to front,
across the top of the stabilizer. Also extend
thismark down theback of thetrailing edge of
the stabilizer.
2)Using amodelingknife,carefully remove
thecoveringatmounting slot of horizontal sta-
bilizer ( both side of fuselage).
Remove covering.
3) Put the stabilizer into place in the po-
sition of the fuselage.
5) When you are satisfied with the align-
ment, hold the stabilizer in place with T- pins
or masking tape, but do not glue at this time.
4) Install the stabilizer onto the fuselage.
Align the centerline drawn on the top and the
rear of the stabilizer with the centre of the fu-
selage. When that is aligned, hold the stabi-
lizer in that position using T-pins or masking
tape. Align the horizontal stabilizer with the
wing. When viewed from the rear, the hori-
zontal stabilizer should be level with the wing.
Ifitis not level, use sandpaperand sand down
the high side of the stabilizer mounting plat-
form until the proper alignment is achieved.
The tips of the stabilizer should also be equal
distance from the tips of the wing.
6) 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.
Hingeslot.

15
www.seagullmodels.com
Pen.
Remove covering.
8) 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
toonly cut throughthe coveringitself. Cutting
into the balsa structure may weaken it.
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
bottom of the stabilizer mounting area and to
the stabilizer mounting platform sides in the
fuselage. Putting the stabilizer in place and
realign. Double check all of your measure-
ments once more before the epoxy cures.
Holdthe stabilizerinplacewithT-pinsormask-
ing tape and remove any excess epoxy using
a paper towel and rubbing alcohol.
7) Removethe stabilizer. Using the lines
youjust drew as aguide, carefullyremove the
covering from between them using a model-
ingknife.
Epoxy.
INSTALLING VERITICAL FIN.
1) Using a modeling knife, remove the
covering from over the precut hinge slot cut
into the lower rear portion of the fuselage.
2) Slidethe vertical stabilizer intothe slot
in the top of the fuselage. The rear edge of
thestabilizer shouldbeflushwith therearedge
of the fuselage and the lower rudder hinge
should engage the precut hinge slot in the
lowerfuselage. The bottom edge ofthe stabi-
lizer should also be firmly pushed against the
top of the horizontal stabilizer.
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.
Cut.

MINI MXS-R EP Instruction Manual.
16
5) Slide the vertical stabilizer back in
place. Using a triangle, check to ensure that
thevertical stabilizer is aligned90º to thehori-
zontal stabilizer.
90º
Vertical
Stabilizer.
Horizontal
Stabilizer.
6) When you are sure that everything is
alignedcorrectly,mix up a generous amount of
Flash30MinuteEpoxy. Applyathinlayertothe
mounting slot in the top of the fuselage and to
the sides and bottom of the vertical stabilizer
mountingarea. Applyepoxy to the bottom and
top edges of the filler block and to the lower
hinge also. Set the stabilizer in place and re-
align. 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. Allow the epoxy to
fully cure before proceeding.
ELEVATOR - RUDDER 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.
C/Aglue. Hinge.
When cutting through the covering to re-
moveit, cut withonly enoughpressure to
only cut through the covering itself. Cutting
into the balsa structure may weaken it.
Pen.
Cut.
4) Remove the stabilizer. Using a mod-
eling knife, remove the covering from below
the lines you drew.

17
www.seagullmodels.com
Rudder control horn.
Elevator control horn.
Elevator control horn.
75mm.
40mm.
AILERONPUSHRODHORNINSTALLATION
75mm.
Repeat the procedure for other landing
gear.
30mm.
Elevator pushrod.
Elevator pushrod.
Rudder pushrod.

MINI MXS-R EP Instruction Manual.
18
INSTALLING THE BATTERY-RECEIVER.
1)Plugthe five servoleads and the switch
lead into the receiver. Plug the battery pack
lead into the switch also.
2) Wrap the receiver and battery pack in
the protective foam rubber to protect them
from vibration.
 3) Route theantenna in the antennatube
inside the fuselage and secure it to the bot-
tom of fuselage using a plastic tape.
APPLY THE DECALS.
1) If all the decals are precut and ready to
stick.Pleasebecertainthe 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.
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.
INSTALLATION PILOT.
1) 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.)
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.
2) 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, please
see pictures as shown.
Epoxy.
- 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.
3) Position the canopy onto the fuselage. Trace
around the canopy and onto the fuselage using
a felt-tipped pen.
12
2
C/Aglue.
4) Install the canopy and secure it with M2x6mm
screws.
1
25mm

19
www.seagullmodels.com
Receiver.
Battery.
Tie wrap.
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 GRAVITYIS LOCATED
55MM BACK FROM THE LEADING EDGE
OF THE WINGAT THE WING ROOT.
 3) Turn the airplane upside down. Place
yourfingersonthe masking tape and carefully
lift the plane .
 2) Mount thewing to thefuselage. Usinga
couple of pieces of masking tape, place them
on the top side of the wing 55mm back from
the leading edge of the wing at the wing root.
ATTACHMENT WING-FUSELAGE.
Wing tube.
Attach the carbon fiber tube into fuselage.
Insert two wing panels as pictures below.
Wing bolt.
Accurately mark the balance point on the top
of the wing on both sides of the fuselage. The
balance point is located 55mm back from the
leadingedge of thewing atthe wingroot. This
is the balance point at which your model
should balance for your first flights. Later, you
maywishtoexperimentby 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
alighterandsnappier”feel”. Inanycase,please
start at the location we recommend .

MINI MXS-R EP Instruction Manual.
20
Withthe wing attachedtothefuselage,allparts
ofthemodelinstalled( ready to fly), and empty
fuel tanks, hold the model at the
markedbalance point with thestabilizer 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
“noseheavy” and you mustadd weight* tothe
tail to balance.
*Ifpossible, first attemptto balance themodel
bychanging the position of the receiverbattery
and receiver. If you are unable to obtain good
balance by doing so, then it will be necessary
toadd weight tothe noseor tailto achievethe
proper balance point.
CONTROL THROWS.
Ailerons: 10mm - 12mm up.
10mm - 12mm down.
Elevator: 10mm - 12mm up.
10mm - 12mm down.
Rudder: 15mm - 20mm left.
15mm - 20mm right.
55mm.