Seagull Models MINI CHRISTEN EAGLE II N54CE User manual

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ASSEMBLY MANUAL
MS: X104
Specifications:
Wingspan-----------------35.4in(90.0cm).
Wingarea------------------392.2sq.in(25.3sqdm).
Weight-----------------------3.5lbs(1.6kg).
Length-----------------------31.0in(78.8cm).
Speedcontrol(ESC)-----30A-40Aamp.
Motor ------------------------480.
Radio-----------4channelswith4miniservos.
Battery2-3-cell 2200mAhto 2600mAhLi-Po.
10 x 5E Electric Prop.
“Graphics and specifications may change without notice”.

MINI CHRISTEN EAGLE II N54CE Instruction Manual.
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INTRODUCTION.
Thank you for choosing the MINI CHRISTEN EAGLE II N54CE ARTF by SEAGULL MODELS
COMPANY LTD. The MINI CHRISTEN EAGLE II N54CE was designed with the intermediate/
advancedsport flyer in mind.It is a semi scale airplane which is easyto fly and quickto assemble.
Theairframeisconventionallybuiltusingbalsa,plywoodtomakeitstrongerthantheaverageARTF
,yetthedesignallowstheaeroplanetobekeptlight.Youwillfindthatmostoftheworkhasbeendone
for you already.The motor mount has been fitted and the hinges are pre-installed . Flying the MINI
CHRISTEN EAGLE II N54CE 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 CHRISTEN EAGLE II N54CE . 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
proceduresdesignedtohelp thenewpilotonhis waytosuccessfulR/Cflight. Theywillalsobeable
to advise on any insurance and safety regulations that may apply.
KIT CONTENTS
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KIT CONTENTS.
ADDITIONAL ITEMS REQUIRED.
Motor 480
4 channel radio with 4 mini servos
Speed control (ESC) 30A-40A amp.
Battery 2-3-cell 2200mAh to
2600mAhLi-Po.
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)Remove each hinge fromthewingpanel
and aileron and place a T-pin in the center of
each hinge. Slide each hinge into the aileron
untiltheT-pin is snug against the aileron.This
will help ensure an equal amount of hinge is
oneithersideof thehingeline whentheaileron
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
shouldbemaintainedbetweenthewingpanel
andaileron.
SEAX10401 Fuselage
SEAX10402 Wing Set
SEAX10403 Tail Set
SEAX10404 Cowling
SEAX10405 Landing Gear Set
SEAX10406 Canopy Hatch
SEAX10407 Wing Tube
SEAX10408 Hardware
SEAX10409 Pushrod Set

MINI CHRISTEN EAGLE II N54CE Instruction Manual.
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8)Afterboth ailerons aresecurely 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.
6) Using C/A remover/debonder and a
papertowel, remove any excess C/A glue that
may have accumulated on the wing or in the
aileronhingearea.
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,makingsurethattheC/Apenetratesinto
both the aileron and wing panel.
Workthe aileron up and downseveral
times to “work in” the hinges and
check for proper movement.
Note:
4) Deflect the aileron and completely
saturate each hinge with thin C/A glue. The
aileronsfront surface shouldlightlycontactthe
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 aspecial
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:
Epoxy.

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HINGING THE ELEVATORS.
3) Remove each hinge from the horizontal
stabilizerpanelandelevatorandplaceaT-pin
in the center of each hinge. Slide each hinge
intotheelevator until theT-pin is snug against
the elevator. This will help ensure an equal
amount of hinge is on either side of the hinge
line when the elevator is mounted to the
horizontal stabilizer panel.
2) Carefully remove the elevator from one
of the horizontal stabilizer panels. Note the
positionofthehinges.UsedC/Agluetofixthe
hingeposition.
1)Locate the items for this section of the
manual.
Applyepoxy glue.
Glue the elevator hinges in place using the
same techniques used to hinge the ailerons.
HINGING THE RUDDER.
Glue the rudder hinges in place using the
same techniques used to hinge the ailerons.
Hinge.
Epoxy.
Epoxy.

MINI CHRISTEN EAGLE II N54CE Instruction Manual.
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Rudder fiberglass
control horn.
Epoxy.
INSTALL ELEVATOR CONTROL HORN.
INSTALL RUDDER CONTROL HORN.
Elevatorfiberglass
controlhorn.
Epoxy.
Fiberglass
control horn.
Fiberglass
control horn.
INSTALL THE AILERONS CONTROL
HORN.
Epoxy.
Aileronfiberglass
control horn .
Fiberglass
control horn.

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INSTALLING THE FUSELAGE SERVOS.
Elevator servo.
Rudder servo.
 1) Secure the servos with the screws pro-
vided with your radio system.
Because the size of servos differ, you
mayneed toadjustthe sizeoftheprecut open-
ing in the mount. The notch in the sides of the
mount allow the servo lead to pass through.
Elevator servo arm.
Rudder servo arm.
FUSELAGE SERVO ARM INSTALLATION.
Installadjustableservoconnectorin the servo
arm as same as picture below:
WHEEL AND WHEEL PANTS
ASSEMBLY.
1) Assembling and mounting the wheel
pants to the landing gear as shown below
pictures.
2) Follow diagram below for wheel pant
installation:
wheel Pant.
wheel.
M3.
wheel collar.
nut. Axle.
Washer.
Lite-Plywood
block.

MINI CHRISTEN EAGLE II N54CE Instruction Manual.
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INSTALLING THE MAIN LANDING GEAR
TO FUSELAGE.
 5) The blind nuts for securing the landing
gearare already mounted inside the fuselage.
 6) Using the hardware provided, mount
the main landing gear to the fuselage.
 7) Placethefuselageinverted on thework-
benchin a suitable stand. Set thelandinggear
in place and use a screwdrive to secure the
landing gear to the fuselage using bolts
M3x10mmand washers. Make suretousethe
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
and wheel pant.
Thread locker glue.
M3x10mm.

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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) Usingasmallweight(Weighted fuel pick-up
workswell) and string, feedthestring through
the wing as indicated.
Because the size of servos differ, you
mayneedtoadjustthesize ofthe precutopen-
ing in the mount. The notch in the sides of
themountallowtheservoleadtopassthrough.
4) Apply 2-3 drops of thin C/A to each of the
mounting holes.Allow the C/A to 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.
Servos.
Smallweight. Thread.
INSTALLING THEAILERON.
C/Aglue.
M3x10mm.

MINI CHRISTEN EAGLE II N54CE Instruction Manual.
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7) Apply 1-2 drops of thin C/A to each of the
mounting tabs. Allow the C/A to cure without
using accelerator.
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
servoextension lead. Pull the lead through the
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.
M2x6mm.

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M3x12mm.
Electric motor.
153mm.
ELECTRIC POWER ASSEMBLY.
1) Locate the items neccessary to install the
electric power installation.
30A-40A.
480.
Battery.
2) Locate the plywood battery tray to the
fuselage.
2200mAh-2600mAh.
3) 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.
Speed control.
15A-30A.
Battery.

MINI CHRISTEN EAGLE II N54CE Instruction Manual.
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Machine screw M2x6mm.
1)Slidethefiberglass cowl over the motor
and line up the back edge of the cowl with the
marksyou made onthefuselagethen trim and
cut as shown.
COWLING.
2) While keeping the back edge of the
cowl flush with the marks, align the front of
thecowl withthecrankshaft oftheengine. The
front of the cowl should be positioned so the
crankshaft is in nearly the middle of the cowl
opening.Usethespinnerbackplateas aguide.
Hold the cowl firmly in place using pieces of
masking tape.
3) Use four M2x6mm machine screws to
secure the fiberglass cowling to thefuselage
as shown.

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INSTALLINGTHEHORIZONTALSTABILIZER.
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
thismarkdown the back of the trailing edge of
the stabilizer.
2)Usingamodelingknife,carefullyremove
thecovering at mounting slot of horizontal sta-
bilizer ( both side of fuselage).
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.
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.
Ifit is not level, use sandpaper and 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.
Pen.

MINI CHRISTEN EAGLE II N54CE Instruction Manual.
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Remove covering.
Epoxy.
INSTALLINGTHE VERTICALSTABILIZER.
1) Using a modeling knife, remove the
covering from over the precut hinge slot cut
into the lower rear portion of the tail at the fu-
selage.
10) After the epoxy has fully cured, re-
move the masking tape orT-pins used to hold
the stabilizer in place. Carefully inspect the
glue joints. Use more epoxy to fill in any gaps
that may exist that were not filled previously
and clean up the excess using a paper towel
and rubbing alcohol.
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 through the coveringitself. Cutting
into the balsa structure may weaken it.
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
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-pins ormask-
ing tape and remove any excess epoxy using
a paper towel and rubbing alcohol.
7) Removethe stabilizer. Using the lines
youjustdrewas a guide, carefully remove the
covering from between them using a model-
ingknife.

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C/Aglue. Hinge.
90º
Vertical
Stabilizer.
Horizontal
Stabilizer.
3) Slide the vertical stabilizer back in
place. Using a triangle, check to ensure that
theverticalstabilizerisaligned 90º to the hori-
zontal stabilizer.
2) 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.
Epoxy.
4) When you are sure that everything is
alignedcorrectly, mixupa generousamountof
Flash30MinuteEpoxy. Applyathinlayertothe
mounting slot and to bottom of the vertical sta-
bilizer mounting area. Apply epoxy to the bot-
tomandtopedgesof the filler blockandtothe
lower hinge also. Set the stabilizer in place
andrealign. Doublecheckallofyour measure-
mentsoncemorebefore theepoxycures.Hold
the stabilizer in place with T-pins or masking
tape and remove any excess epoxy using a
papertowel and rubbing alcohol. Allowtheep-
oxy 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.
Elevator control horn.

MINI CHRISTEN EAGLE II N54CE Instruction Manual.
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Wing.
Aileron.
Rudder control horn.
AILERONPUSHRODHORN INSTALLATION
270mm.
270mm.
Rudder pushrod.
Elevator pushrod.
50mm.

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CABANE STRUTINSTALLATION
1)Locate the items for this section of the
manual.
2)Use a hobby knife with blade to remove
the covering on the top of the fuselage so the
cabane struts can be inserted into the
fuselage.Werecommend usingatrimseal tool
toironthecoveringneatlyintotheopenings in
the fuselage .
3) Place the cabane struts on position
,noting their position as shown in the
photo.Loosely install the four M3x6 socket
headmachine screws and M3 washers.Leave
, the hardware loose so the struts can be
positioned while installing the upper wing
centerrib.Maker sure to use threadlock on the
screws so they won’t vibrate loose.
M3x6mm.
4) Place the upper center wing rib in
position on the cabene struts.Start the M3x12
socket head screws that secure the rib to the
cabane struts.
5)Use a 2.5mm hex wrench to slowly
tighten the hardware securing the cabane
strutsinposition onthefuselage.Youmaywant
to use hemostarts to hold the M3 nuts when
usingthem to attach the uppercenter wing rib
to the struts .Again ,make sure to use
threadlock on all the fastenners to prevent
them from vibrating loose.
M3x12mm.

MINI CHRISTEN EAGLE II N54CE Instruction Manual.
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ATTACHMENT WING-FUSELAGE.
Wing tube.
Attach the carbon fiber into fuselage.
Insert two wing panels as pictures below.
Wing bolt.
INSTALLING THE RECEIVER.
Receiver.
1)Plugthefiveservoleadsandtheswitch
lead into the receiver. Plug the battery pack
lead into the switch also.
2) Wrap the receiver pack in the protec-
tive foam rubber to protect them from vibra-
tion.
 3) Route theantenna in the antennatube
inside the fuselage and secure it to the bot-
tom of fuselage using a plastic tape.
M3x6mm.

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INSTALLATION WING STRUTS.
1)Locate the items for this section of the
manual.
2)Attach the wing strut to the top of the
bottom wing panel using an M3x6 machine
screw.
3)Repeat steps to prepare the remaining
wing panel for installation.
PlacetheFuselage Hatchbackonthefuselage
to complete the assembly of your models.
M3x6mm.
M3x6mm.
3)Threadaclevis oneachendofa threadded
rod.Connect the rod between the top and
bottomailerons.With the radio sysytem on and
the bottom aileron contered ,adjust the length
to center the top aileron.Once centered ,slide
the silicone tubing over the forks of the clevis
to prevent it from opening accidentally.Apply
threadlockon the nuts andclevises to prevent
them from vibrating loose.Use needle nose
pliers to tighten the nut against the clevis to
preventit fromvibratingandchanging position.
M3x6mm.
150mm.
150mm.

MINI CHRISTEN EAGLE II N54CE Instruction Manual.
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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”andyoumustaddweight*tothe
tail to balance.
*Ifpossible,first attempt to balance the model
bychanging thepositionof thereceiverbattery
and receiver. If you are unable to obtain good
balance by doing so, then it will be necessary
toadd weight to the nose ortail toachievethe
proper balance point.
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 GRAVITY IS LOCATED
75MM BACK FROM THE LEADING EDGE
OF THE WINGAT THE WING ROOT.
 3) Turn the airplane upside down. Place
yourfingers on the masking tape and carefully
lift the plane .
 2)Mount the wing tothe fuselage.Usinga
couple of pieces of masking tape, place them
on the top side of the wing 75mm back from
the leading edge of the wing at the wing root.
Accurately mark the balance point on the top
of the wing on both sides of the fuselage. The
balance point is located 75mm back from the
leadingedge of the wing at thewingroot. This
is the balance point at which your model
should balance for your first flights. Later, you
maywish toexperimentbyshifting thebalance
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”. Inany case,please
start at the location we recommend .
Withthewingattached tothefuselage, allparts
ofthe model installed ( readytofly),andempty
fuel tanks, hold the model at the
markedbalancepointwiththestabilizerlevel..
BALANCING.