Seagull Models CHRISTEN HUSKY SEA180 User manual

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CHRISTEN
HUSKY
“Graphics and specifications may change w ithout notice”.
Specications:
Wingspan---------------79.9 in (203 cm).
Wing area----------------922.3 sq.in (59.5 sq.dm).
Weight-------------------7.9 - 8.8 lbs (3.6 - 4.0 kg).
Length-------------------50.0 in (127.0cm).
Engine-------------------0.61 - 0.75 cu.in----2 stroke.
..........................................- 0.91 cu.in----4 stroke.
Radio--------------------5 channels with 7 servos.
Electric conversion: Optional.
ASSEMBLY MANUAL
MS: 180

CHRISTENHUSKY Instruction Manual.
2
ank you for choosing the CHRISTEN HUSKY ARTF by SEAGULL MODELS
COMPANY LTD,. e CHRISTEN HUSKY 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 CHRISTEN HUSKY is simply a joy.
is instruction manual is designed to help you build a great ying earoplane. Please read
this manual throughly before starting assembly of your CHRISTEN HUSKY. User the parts
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 inexperianced 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
3
11
5
22
4
6
3
1
10

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KIT CONTENTS.
SEA180 CHRISTEN HUSKY 2030mm
SEA18001 Fuselage
SEA18002 Wing set
SEA18003 Tail set
SEA18004 Cowling
SEA18005 Main Landing Gear
SEA18006 Tail Gear
SEA18007 Windshield & Window Set
SEA18008 Decal Set
SEA18009 Linkage Set
SEA18010 Wing Tube
SEA18011 Fiberglass Wheel pants
ADDITIONAL ITEMS REQUIRED.
0.61- 0.75 2-stroke.
0.91 4-stroke.
Computer radio with 7 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 FLAP
M2x10 mm
M2x10 mm

CHRISTENHUSKY Instruction Manual.
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HINGING THE ELEVATORS.
3) Remove each hinge from the horizon-
tal stabilizer panel and elevator and place a
Tpin in the center of each hunge. Slide each
hinge into the elevator until the T-pin is
snug against the elevator. is will help en-
sure an equal amount of hinge is on either
side of the hinge line when the elevator is
mounted to the horizontal stabilizer panel.
1) Locate the items for this section of the
manual.
2) Carefully remove the elevator from one
of the horizontal stabilizer panels. Note the
position of the hinges. Used C/A glue to x
the hinges position.
Epoxy
C/A glue
Epoxy

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HINGING THE RUDDER.
Glue the rudder hinges in place using the
same techniques used to hinge the ailer-
ons.
Fiberglass
INSTALL THE
Epoxy
Epoxy
INSTALL THE AILERONS CONTROL
HORN.
Fiberglass control horn
Epoxy

CHRISTENHUSKY Instruction Manual.
66
.
.
.
.
INSTALL FLAP CONTROL HORN.
INSTALL ELEVATOR CONTROL HORN.
INSTALL RUDDER CONTROL HORN.
Aileron control horn
Epoxy
Install the ap control horn using the
same method as same as the aileron con-
trol horns.
Fiberglass control horn.
Epoxy
Flap control horn
Epoxy
Fiberglass control horn
Fiberglass control horn
Repeat steps to install the rudder control
horn as same as steps done for ailerons.

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.
wheel collar.
wheel.
Axle.
Washer.
M3.
wheel Pant.
wheel.
M3.
M3.
wheel collar.
nut. Axle.
Washer.
M3.
M4x20mm
Epoxy
Epoxy
Rudder control
WHEEL AND WHEEL PANTS
1) Assembling and muonting the wheel
pants as shown below pictures.
Axle
Wheel cover
C/A glue
INSTALLING THE MAIN LANDING
GEAR TO FUSELAGE

CHRISTENHUSKY Instruction Manual.
88
.
.
C/A glue.
Landing Gear. wheel Pant.
read locker glue
M4x20 mm
M4x20mm
M4x20mm
INSTALLING WHEEL PANTS TO MAIN
LADING GEAR.
Locker glue
ENGINE MOUNT INSTALLATION.
1) Locate the items necessary to install the
engine mount included with your model.
2) Use four 4x30mm head bolts and four
4mm washers to attach the engine mount
rails to the rewall. Tighten the screws .
Make sure to use threadlock on the screws
to help prevent them from vibrating loose.
4x30mm
read locker glue

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Vent tube. Fuel pick up tube.
Fuel fill tube.
C
A
B
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.
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
ohe ashing around the tank opening
using amodeling knife. If ashing is pre-
sent, make sure none falls into the tank.
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.
6) When satised with the alignment of
the stopper assembly tighten the 3 x 20mm
machine screw until the rubber stopper
expands and seals the tank opening. Do
not overtighten the assembly as this could
cause the tank to split.
FUEL TANK INSTALLATION.
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cult to deter-
mine which.

CHRISTENHUSKY Instruction Manual.
1010
.
Vent tube.
Fuel pick up tube.
Fuel fill tube.
.
A
C/A glue
7) Slide the fuel tank into the fuselage.
Guide the lines from the tank through the
hole in the rewall.
8) Use plywood template to hold in place
the fuel tank with C/A glue to secure the
fuel tank inside the fuselage.
.
C
Fuel tank
B
C/A glue
9) Connect the lines from the tank to the
engine and muer. e vent line will con-
nect to the muer and the line from the
clunk to the carburetor.
Blow through one of the lines to
ensure the fuel lines have not become
kinked inside the fuel tank compart-
ment. Air should ow through easily.
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 onto the throttle servo. Test t the
servo into the aileron servo mount.
2) Secure the servos with the screws pro-
vided with your radio system.

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Throttle servo.
Throttle servo arm.
3x10 mm
Switch Installation.
THROTTLE SERVO ARM INSTALLA-
TION.
.
.
.
Install adjustable servo connector in the
servo arm as same as picture below:
Loctite secure. Adjustable Servo
connector
Servo arm
INSTALLING THE SWITCH.
Install the switch into the precut hole in
the side, in the fuselage.
Recomend mounting switch inside
fuselage if using oats.
Cut .
Cut Covering.
3/32’’ Hole
MOUNTING THE ENGINE.
1) Position the engine with the drive
washer (145mm) forward of the rewall as
shown.

CHRISTENHUSKY Instruction Manual.
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145mm. .
2) Use a pin drill and 4mm drill bit to drill
a small indentation in the mount for the
engine mounting screw.
4mm
3) Use a drill to drill the four holes in the
engine mount rails.
4.5mm
Cut
Machine screw M4x30 mm
4) On the re wall has the location for the
throttle pusshrod tube (pre-drill).
Pushrod tube hole.
5) Slide the pushrod tube in the rewall
and guide it through the fuel tank mount.
Use medium C/A to glue the tube to the
rewall 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 the
mounts. Use four M4x30mm machine
screws to secure the engine to the mount
as shown.
Machine screw M4x30 mm
Pushrod wire.

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1313
Trim and cut.
Trim and cut.
Trim and cut.
.
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.
COWLING.
1) Slide the berglass cowl over the engine
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
necessary to use a needle valve extension
for the high speed needle valve. Make this
out of su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.
2) While keeping the back edge of the
cowl ush with the marks, align the front
of the cowl with the cranksha of the en-
gine. e front of the cowl should be po-
sitioned so the cranksha is in nearly the
middle of the cowl opening. Use the spin-
ner backplate as a guide. Hold the cowl
rmly in place using pieces of masking
tape.
Machine screw M3x10 mm
Needle valve

CHRISTENHUSKY Instruction Manual.
14
3) Install the muer and muer exten-
sion onto the engine and make the cutout
in the cowl for muer clearance. Connect
the fuel and pressure lines to the carbu-
retor, muer and fuel ller valve. Secure
the cowl to fuselage using the M3x10mm
screws.
Servos
.
Small weight
.
Thread .
INSTALLING THE SPINNER.
Install the spinner backplate, propeller
and spinner cone.
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 propeller
comes in contact with it.
INSTALLING THE AILERON - FLAP
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) Using a small weight (Weighted fuel
pick-up works well) and string, feed the
string through the wing as indicated.
2) Place the servo between the mounting
blocks and space it from the hatch. Use a
pencil to mark the mounting hole loca-
tions on the blocks.

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1515
3) Use drill bit in a pin vise to drill the
mouting holes in the blocks.
4) Apply 2-3 drops of thin C/A to each
of the mounting holes. Allow the C/A to
cure without using accelerator.
C/A glue
5) Use dental oss to secure the connec-
tion so they cannot become unplugged.
6) Secure the servo to the aileron hatch
using Phillips screwdriver and the screws
provided with the servo.
7) Apply 1-2 drops of thin C/A to each of
the mounting tabs. Allow the C/A to cure
without using accelerator.
.
C/A glue
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 at-
tach it to the servo extension lead. Pull
the lead through the wing and remove the
string.

CHRISTENHUSKY Instruction Manual.
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1717
.
M2 lock nut.
M2 clevis.
60mm.
.
M2 lock nut.
M2 lock nut.
M2 clevis.
.
.
M2 lock nut.
50 mm
9) Set the aileron hatch in place and use a
Phillips screw driver to install it with four
wood screws.
M2x10 mm
AILERON PUSHROD HORN INSTAL-
LATION
Wing
Aileron
INSTALLING THE FLAP SERVO.
Repeat the procedure for the aileron
servo.
Flag
Wing

CHRISTENHUSKY Instruction Manual.
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.
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.
Draw center line
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.
Cut
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.
Pen
5) Remove the stabilizer. Using the lines
you just drew as a guide, carefully remove
the covering from between them using a
modeling knife.
Trim and cut
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 stabi-
lizer mounting platform sides in the fuse-
lage. Remove the covering from both the
top and the bottom of the platform sides.
Epoxy

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1919
.
.
Remove covering.
90º
Vertical
Stabilizer.
Horizontal
Stabilizer.
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 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
thestabilizerinplacewithT-pinsormask-
ing tape and remove any excess epoxy
using a paper towel and rubbing alcohol.
Epoxy
Epoxy
INSTALLING VERTICAL STABILIZER
1) Using a modeling knife, remove the
coveringfromovertheprecuthingeslotcut
into the lower rear portion of the fuselage.
Fill Epoxy
2) 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.
Epoxy
3) Slide the vertical stabilizer back in-
place. Using a triangle, check to ensure
that the vertical stabilizer is aligned 90º to
the horizontal stabilizer.

CHRISTENHUSKY Instruction Manual.
2020
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Epoxy.
M2 lock nut.
M2 clevis.
M3 Clevis.
Crimp. Metal connector.
Cable end.
4) When you are sure that everything is
aligned correctly, mix up a generous
amount of Flash 30 Minute Epoxy. Ap-
ply a thin layer to the mounting slot
and to bottom of the vertical stabilizer
mounting area. Apply epoxy to the bot-
tom 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. Allow the
epoxy to fully cure before proceeding.
ELEVATOR AND RUDDER PUSHROD
HORN INSTALLATION.
Rudder control horn
660mm