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www.seagullmodels.com

ASSEMBLY MANUAL

MS: X104

Specifications:Wing span ----------------- 35.4in (90.0cm).Wing area ------------------392.2sq.in (25.3sq dm).Weight -----------------------3.5lbs (1.6kg).Length -----------------------31.0in (78.8cm).Speed control(ESC)-----30A-40A amp.Motor ------------------------ 480.Radio ----------- 4 channels with 4 mini servos.Battery 2-3-cell 2200mAh to 2600mAh Li-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 MODELSCOMPANY LTD. The MINI CHRISTEN EAGLE II N54CE 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 donefor you already.The motor mount has been fitted and the hinges are pre-installed . Flying the MINICHRISTEN EAGLE II N54CE is simply a joy.This instruction manual is designed to help you build a great flying aeroplane. Please read thismanual thoroughly before starting assembly of your MINI CHRISTEN EAGLE II N54CE . Use theparts listing below to identify all parts.

WARNING.

Please be aware that this aeroplane is not a toy and if assembled or used incorrectly it iscapable of causing injury to people or property. WHEN YOU FLY THIS AEROPLANE YOUASSUME ALL RISK & RESPONSIBILITY.If you are inexperienced with basic R/C flight we strongly recommend you contact your R/C supplierand join your local R/C Model Flying Club. R/C Model Flying Clubs offer a variety of trainingprocedures designed to help the new pilot on his way to successful R/C flight. They will also be ableto advise on any insurance and safety regulations that may apply.

KIT CONTENTS

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KIT CONTENTS.

ADDITIONAL ITEMS REQUIRED.

Motor 4804 channel radio with 4 mini servosSpeed control (ESC) 30A-40A amp.Battery 2-3-cell 2200mAh to2600mAh Li-Po.

The control surfaces, including theailerons, elevators, and rudder, areprehinged with hinges installed, butthe hinges are not glued in place. Itis imperative that you properlyadhere the hinges in place per thesteps that follow using a high-qualitythin C/A glue.

HINGING THE AILERONS .

Note:

1) Carefully remove the aileron from oneof the wing panels. Note the position of thehinges.

2) Remove each hinge from the wing paneland aileron and place a T-pin in the center ofeach hinge. Slide each hinge into the aileronuntil the T-pin is snug against the aileron. Thiswill help ensure an equal amount of hinge ison either side of the hinge line when the aileronis mounted to the wing panel.

Hinge.

T-pin.

TOOLS & SUPPLIES NEEDED.

Thick cyanoacrylate glue30 minute epoxy5 minute epoxyHand or electric drillAssorted drill bitsModelling knifeStraight edge ruler2mm ball driverPhillips head screwdriver220 grit sandpaper90° square or builder’s triangleWire cuttersMasking tape & T-pinsThread-lockPaper towels

3) Slide the aileron on the wing panel untilthere is only a slight gap. The hinge is nowcentered on the wing panel and aileron.Remove the T-pins and snug the aileronagainst the wing panel. A gap of 1/64” or lessshould be maintained between the wing paneland aileron.

SEAX10401 FuselageSEAX10402 Wing SetSEAX10403 Tail SetSEAX10404 CowlingSEAX10405 Landing Gear SetSEAX10406 Canopy HatchSEAX10407 Wing TubeSEAX10408 HardwareSEAX10409 Pushrod Set


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8) After both ailerons are securely hinged,firmly grasp the wing panel and aileron tomake sure the hinges are securely glued andcannot be pulled out. Do this by carefullyapplying medium pressure, trying to separatethe aileron from the wing panel. Use cautionnot to crush the wing structure.

7) Repeat this process with the other wingpanel, securely hinging the aileron in place.

6) Using C/A remover/debonder and apaper towel, remove any excess C/A glue thatmay have accumulated on the wing or in theaileron hinge area.

5) Turn the wing panel over and deflect theaileron in the opposite direction from theopposite side. Apply thin C/A glue to eachhinge, making sure that the C/A penetrates intoboth the aileron and wing panel.

Work the aileron up and down severaltimes to “work in” the hinges andcheck for proper movement.

Note:

4) Deflect the aileron and completelysaturate each hinge with thin C/A glue. Theailerons front surface should lightly contact thewing during this procedure. Ideally, whenthehinges are glued in place, a 1/64” gap orless will be maintained throughout the lenghof the aileron to the wing panel hinge line.

Hinge.

The hinge is constructed of a specialmaterial that allows the C/A to wickor penetrate and distributethroughout the hinge, securelybonding it to the wood structure ofthe wing panel and aileron.

Note:

Epoxy.

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HINGING THE ELEVATORS.

3) Remove each hinge from the horizontalstabilizer panel and elevator and place a T-pinin the center of each hinge. Slide each hingeinto the elevator until the T-pin is snug againstthe elevator. This will help ensure an equalamount of hinge is on either side of the hingeline when the elevator is mounted to thehorizontal stabilizer panel.

2) Carefully remove the elevator from oneof the horizontal stabilizer panels. Note theposition of the hinges. Used C/A glue to fix thehinge position.

1)Locate the items for this section of themanual.

Apply epoxy glue.

Glue the elevator hinges in place using thesame techniques used to hinge the ailerons.

HINGING THE RUDDER.

Glue the rudder hinges in place using thesame techniques used to hinge the ailerons.

Hinge.

Epoxy.

Epoxy.


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Rudder fiberglasscontrol horn.

Epoxy.

INSTALL ELEVATOR CONTROL HORN.

INSTALL RUDDER CONTROL HORN.

Elevator fiberglasscontrol horn.

Epoxy.

Fiberglasscontrol horn.


INSTALL THE AILERONS CONTROLHORN.

Epoxy.

Aileron fiberglasscontrol 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, youmay need to adjust the size of the precut open-ing in the mount. The notch in the sides of themount allow the servo lead to pass through.

Elevator servo arm.

Rudder servo arm.

FUSELAGE SERVO ARM INSTALLATION.

Install adjustable servo connector in the servoarm as same as picture below:

WHEEL AND WHEEL PANTSASSEMBLY.

1) Assembling and mounting the wheelpants to the landing gear as shown belowpictures.

2) Follow diagram below for wheel pantinstallation:

wheel Pant.

wheel.

M3.

wheel collar.

nut.Axle.

Washer.

Lite-Plywood block.


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INSTALLING THE MAIN LANDING GEARTO FUSELAGE.

5) The blind nuts for securing the landinggear are already mounted inside the fuselage.

6) Using the hardware provided, mountthe main landing gear to the fuselage.

7) Place the fuselage inverted on the work-bench in a suitable stand. Set the landing gearin place and use a screwdrive to secure thelanding gear to the fuselage using boltsM3x10mm and washers. Make sure to use thethreadlock on the bolts so they don’t vibrateloose.

4) A drop of C/A glue on the wheel collarscrews will help keep them from coming loseduring operation.

Repeat the process for the other wheeland wheel pant.

Thread locker glue.

M3x10mm.

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2) Place the servo between the mountingblocks and space it from the hatch. Use a pencilto mark the mounting hole locations on theblocks.

3) Use drill bit in a pin vise to drill the moutingholes in the blocks.

1) Using a small weight (Weighted fuel pick-upworks well) and string, feed the string throughthe wing as indicated.

Because the size of servos differ, youmay need to adjust the size of the precut open-ing in the mount. The notch in the sides ofthe mount allow the servo lead to pass through.

4) Apply 2-3 drops of thin C/A to each of themounting holes. Allow the C/A to cure withoutusing accelerator.

6) Secure the servo to the aileron hatch usingPhillips screwdriver and the screws providedwith the servo.

5) Use dental floss to secure the connectionso they cannot become unplugged.

Servos.

Small weight. Thread.

INSTALLING THE AILERON.

C/A glue.

M3x10mm.


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7) Apply 1-2 drops of thin C/A to each of themounting tabs. Allow the C/A to cure withoutusing accelerator.

8) A string has been provided in the wing topull the aileron lead through to the wing root.Remove the string from the wing at the servolocation and use the tape to attach it to theservo extension lead. Pull the lead through thewing and remove the string.

9) Set the aileron hatch in place and use aPhillips screw driver to install it with four woodscrews.

M2x6mm.

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M3x12mm.

Electric motor.

153mm.

ELECTRIC POWER ASSEMBLY.

1) Locate the items neccessary to install theelectric power installation.

30A-40A.

480.

Battery.

2) Locate the plywood battery tray to thefuselage.

2200mAh-2600mAh.

3) Attach the speed control to the side of themotor box using two-sided tape and tie wraps.Connect the appropriate leads from the speedcontrol to the motor. Make sure the leads willnot interfere with the operation of the motor.

Speed control.15A-30A.

Battery.


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Machine screw M2x6mm.

1) Slide the fiberglass cowl over the motorand line up the back edge of the cowl with themarks you made on the fuselage then trim andcut as shown.

COWLING.

2) While keeping the back edge of thecowl flush with the marks, align the front ofthe cowl with the crankshaft of the engine. Thefront of the cowl should be positioned so thecrankshaft is in nearly the middle of the cowlopening. Use the spinner backplate as a guide.Hold the cowl firmly in place using pieces ofmasking tape.

3) Use four M2x6mm machine screws tosecure the fiberglass cowling to thefuselageas shown.

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INSTALLING THE HORIZONTAL STABILIZER.

1) Using a ruler and a pen, locate thecenterline of the horizontal stabilizer, at the trail-ing edge, and place a mark. Use a triangleand extend this mark, from back to front,across the top of the stabilizer. Also extendthis mark down the back of the trailing edge ofthe stabilizer.

2) Using a modeling knife, carefully removethe covering at mounting slot of horizontal sta-bilizer ( both side of fuselage).

INSTALLING THE SPINNER.

Install the spinner backplate, propeller andspinner cone.

The propeller should not touch any partof the spinner cone. If it does, use a

sharp modeling knife and carefully trim awaythe spinner cone where the propeller comesin 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- pinsor masking tape, but do not glue at this time.

4) Install the stabilizer onto the fuselage.Align the centerline drawn on the top and therear 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 maskingtape. Align the horizontal stabilizer with thewing. When viewed from the rear, the hori-zontal stabilizer should be level with the wing.If it is not level, use sandpaper and sand downthe high side of the stabilizer mounting plat-form until the proper alignment is achieved.The tips of the stabilizer should also be equaldistance from the tips of the wing.

6) With the stabilizer held firmly in place,use a pen and draw lines onto the stabilizerwhere it and the fuselage sides meet. Do thison both the right and left sides and top andbottom of the stabilizer.

Pen.


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Remove covering.

Epoxy.

INSTALLING THE VERTICAL STABILIZER.

1) Using a modeling knife, remove thecovering from over the precut hinge slot cutinto the lower rear portion of the tail at the fu-selage.

10) After the epoxy has fully cured, re-move the masking tape or T-pins used to holdthe stabilizer in place. Carefully inspect theglue joints. Use more epoxy to fill in any gapsthat may exist that were not filled previouslyand clean up the excess using a paper toweland rubbing alcohol.

Remove covering.

8) Using a modeling knife, carefully re-move the covering that overlaps the stabilizermounting platform sides in the fuselage. Re-move the covering from both the top and thebottom of the platform sides.

When cutting through the covering to re-move it, cut with only enough pressure

to only cut through the covering itself. Cuttinginto the balsa structure may weaken it.

Epoxy.

9) When you are sure that everything isaligned correctly, mix up a generous amountof 30 Minute Epoxy. Apply a thin layer to thebottom of the stabilizer mounting area and tothe stabilizer mounting platform sides in thefuselage. Putting the stabilizer in place andrealign. Double check all of your measure-ments once more before the epoxy cures.Hold the stabilizer in place with T-pins or mask-ing tape and remove any excess epoxy usinga paper towel and rubbing alcohol.

7) Remove the stabilizer. Using the linesyou just drew as a guide, carefully remove thecovering from between them using a model-ing knife.

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C/A glue.Hinge.

90º

VerticalStabilizer.Horizontal

Stabilizer.

3) Slide the vertical stabilizer back inplace. Using a triangle, check to ensure thatthe vertical stabilizer is aligned 90º to the hori-zontal stabilizer.

2) While holding the vertical stabilizerfirmly in place, use a pen and draw a line oneach side of the vertical stabilizer where itmeets the top of the fuselage.

Epoxy.

4) When you are sure that everything isaligned correctly, mix up a generous amount ofFlash 30 Minute Epoxy. Apply a thin layer to themounting slot and to bottom of the vertical sta-bilizer mounting area. Apply epoxy to the bot-tom and top edges of the filler block and to thelower hinge also. Set the stabilizer in placeand realign. Double check all of your measure-ments once more before the epoxy cures. Holdthe stabilizer in place with T-pins or maskingtape and remove any excess epoxy using apaper towel and rubbing alcohol. Allow the ep-oxy to fully cure before proceeding.

ELEVATOR - RUDDER PUSHROD HORNINSTALLATION.

1) Install the elevator control horn usingthe same method as with the aileron controlhorns.

2) Position the elevator control horn onthe both side of elevator.

Elevator control horn.


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Wing.

Aileron.

Rudder control horn.

AILERON PUSHROD HORN INSTALLATION

270mm.

270mm.

Rudder pushrod.

Elevator pushrod.

50mm.

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CABANE STRUT INSTALLATION


2)Use a hobby knife with blade to removethe covering on the top of the fuselage so thecabane struts can be inserted into thefuselage.We recommend using a trim seal toolto iron the covering neatly into the openings inthe fuselage .

3) Place the cabane struts on position,noting their position as shown in thephoto.Loosely install the four M3x6 sockethead machine screws and M3 washers.Leave, the hardware loose so the struts can bepositioned while installing the upper wingcenter rib.Maker sure to use threadlock on thescrews so they won’t vibrate loose.

M3x6mm.

4) Place the upper center wing rib inposition on the cabene struts.Start the M3x12socket head screws that secure the rib to thecabane struts.

5)Use a 2.5mm hex wrench to slowlytighten the hardware securing the cabanestruts in position on the fuselage.You may wantto use hemostarts to hold the M3 nuts whenusing them to attach the upper center wing ribto the struts .Again ,make sure to usethreadlock on all the fastenners to preventthem from vibrating loose.

M3x12mm.


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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) Plug the five servo leads and the switchlead into the receiver. Plug the battery packlead into the switch also.

2) Wrap the receiver pack in the protec-tive foam rubber to protect them from vibra-tion.

3) Route the antenna in the antenna tubeinside the fuselage and secure it to the bot-tom of fuselage using a plastic tape.

M3x6mm.

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INSTALLATION WING STRUTS.


2)Attach the wing strut to the top of thebottom wing panel using an M3x6 machinescrew.

3)Repeat steps to prepare the remainingwing panel for installation.

Place the Fuselage Hatch back on the fuselageto complete the assembly of your models.

M3x6mm.

M3x6mm.

3)Thread a clevis on each end of a threaddedrod.Connect the rod between the top andbottom ailerons.With the radio sysytem on andthe bottom aileron contered ,adjust the lengthto center the top aileron.Once centered ,slidethe silicone tubing over the forks of the clevisto prevent it from opening accidentally.Applythreadlock on the nuts and clevises to preventthem from vibrating loose.Use needle nosepliers to tighten the nut against the clevis toprevent it from vibrating and changing position.

M3x6mm.

150mm.

150mm.


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Lift the model. If the tail drops when you lift,the model is “tail heavy” and you must addweight* to the nose. If the nose drops, it is“nose heavy” and you must add weight* to thetail to balance.

*If possible, first attempt to balance the modelby changing the position of the receiver batteryand receiver. If you are unable to obtain goodbalance by doing so, then it will be necessaryto add weight to the nose or tail to achieve theproper balance point.

BALANCING.

1) It is critical that your airplane bebalanced correctly. Improper balance willcause your plane to lose control and crash.THE CENTER OF GRAVITY IS LOCATED75MM BACK FROM THE LEADING EDGEOF THE WING AT THE WING ROOT.

3) Turn the airplane upside down. Placeyour fingers on the masking tape and carefullylift the plane .

2) Mount the wing to the fuselage. Using acouple of pieces of masking tape, place themon the top side of the wing 75mm back fromthe leading edge of the wing at the wing root.

Accurately mark the balance point on the topof the wing on both sides of the fuselage. Thebalance point is located 75mm back from theleading edge of the wing at the wing root. Thisis the balance point at which your modelshould balance for your first flights. Later, youmay wish to experiment by shifting the balanceup to 10mm forward or back to change theflying characteristics. Moving the balanceforward may improve the smoothness andarrow- like tracking, but it may then requiremore speed for take off and make it moredifficult to slow down for landing. Moving thebalance aft makes the model more agile witha lighter and snappier ”feel”. In any case,pleasestart at the location we recommend .

With the wing attached to the fuselage, all partsof the model installed ( ready to fly), and emptyfuel tanks, hold the model at themarked balance point with the stabilizer level..

BALANCING.

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75mm.

CONTROL THROWS.

Ailerons:High Rate :

Up : 15 mmDown : 15 mm

Low Rate :Up : 10 mmDown : 10 mm

Elevator:High Rate :

Up : 15 mmDown : 15 mm

Low Rate :Up : 10 mmDown : 10 mm

Rudder:High Rate :

Right : 30 mmLeft : 30 mm

Low Rate :Right : 20 mmLeft : 20 mm


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7) Check the receiver antenna. It shouldbe fully extended and not coiled up inside thefuselage.

5) If your radio transmitter is equippedwith dual rate switches double check that theyare on the low rate setting for your first fewflights.

6) Check to ensure the control surfacesare moving the proper amount for both lowand high rate settings.

8) Properly balance the propeller. An outof balance propeller will cause excessive vi-bration which could lead to engine and/or air-frame failure.

3) Double check the balance of the air-plane. Do this with the fuel tank empty.

2) Check every bolt and every glue jointin the MINI CHRISTEN EAGLE II N54CEto ensure that everything is tight and wellbonded.

1) Completely charge your transmitterand receiver batteries before your first day offlying.

PREFLIGHT CHECK.

We wish you many safe and enjoyableflights with your MINI CHRISTEN EAGLE IIN54CE.

4) Check the control surfaces. All shouldmove in the correct direction and not bind inany way.

D) Check the throttle. Moving the throttlestick forward should open the carburetor bar-rel. If it does not, flip the servo reversing switchon your transmitter to change the direction.

E) From behind the airplane, look at theaileron on the right wing half. Move the aileronstick to the right. The right aileron should moveup and the other aileron should move down. Ifit does not, flip the servo reversing switch onyour transmitter to change the direction.

C) Check the rudder. Looking from be-hind the airplane, move the rudder stick to theright. The rudder should move to the right. If itdoes not, flip the servo reversing switch onyour transmitter to change the direction.

B) Check the elevator first. Pull back onthe elevator stick. The elevator halves shouldmove up. If it they do not, flip the servo re-versing switch on your transmitter to changethe direction.

Check the operation and direction of theelevator, rudder, ailerons and throttle.

FLIGHT PREPARATION.

A) Plug in your radio system per themanufacturer's instructions and turn every-thing on.

“Graphics and specifications may change without notice”. · Battery 2-3-cell 2200mAh to 2600mAh...

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