Seagull Models Husky User manual

“Graphics and specifications may change without notice”.
MS:180
ASSEMBLY MANUAL
Specifications:
Wingspan------------------------------79.9in(203cm).
Wing area -----------------922.3sq.in (59.5sq dm).
Weight ------------------------7.9-8.8lbs (3.6-4.0kg).
Length ------------------------------50.0in (127.0cm).
Engine ------------------0.61-0.75cu.in-----2-stroke.
0.91.in -----4-stroke.
Radio ------------------- 5 channels with 7 servos.
Electric conversion: optional


CHRISTEN HUSKY Instruction Manual.
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INTRODUCTION.
Thank you for choosing the CHRISTEN HUSKY ARTF by SEAGULL MODELS COMPANY LTD.
The CHRISTEN HUSKY 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 done for you already.The motor mount
has been fitted and the hinges are pre-installed . Flying the CHRISTEN HUSKY 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 CHRISTEN HUSKY . 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.
If you are inexperienced with basic R/C flight we strongly recommend you contact your R/C supplier
and join your local R/C Model Flying Club. R/C Model Flying Clubs offer a variety of training
procedures designed to help the new pilot on his way to successful R/C flight. They will also be able
to advise on any insurance and safety regulations that may apply.
KIT CONTENTS
1
3
2
2
4
11
5
3
6
10

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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.
Thick 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.
Thread-lock.
Paper towels.
SEA180 CHRISTEN HUSKY 2030mm
SEA18001 Fuselage
SEA18002 Wing set
SEA18003 Tail set
SEA18004 Cowling :
SEA18005 Main Landing Gear
SEA18006 Tail Gear
SEA18007 Windshield Set
SEA18008 Decal Set
SEA18009 Linkage Set
SEA18010 Wing Tube
SEA18011 Fiberglass Wheel pants
ZZBSEA180B Replacement Box
FL180 Floating set for Christen Husky
KIT CONTENTS.TS HINGING THE FLAP
M2x10mm.
M2x10mm.

CHRISTEN HUSKY Instruction Manual.
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HINGING THE ELEVATORS
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 fix the
hinges position..
3) Remove each hinge from the horizontal
stabilizer panel and elevator and place a T-
pin in the center of each hunge. Slide each
hinge into the elevator until the T-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.
Epoxy
Epoxy
C/A glue
C/A glue

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

CHRISTEN HUSKY Instruction Manual.
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INSTALL ELEVATOR CONTROL
HORN.
INSTALL RUDDER CONTROL HORN.
Repeat steps to install the rudder control horn
as same as steps done for ailerons.
Fiberglass control horn.
Fiberglass control horn.
Epoxy
Epoxy
Flap control horn.
Aileron control horn.
Epoxy
Install the flap control horn using the same
method as same as the aileron control horns.
INSTALL FLAP CONTROL HORN.
Fiberglass control horn.

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

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

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3) Carefully bend the second nylon tube
up at a 45º angle. This tube is the vent tube.
4) Test fit the stopper assembly into the
tank. It may be necessary to remove some of
the flashing around the tank opening using a
modeling knife. If flashing is present, make
sure none falls into the tank.
Vent tube. Fuel pick up tube.
Fuel fill tube.
INSTALLING THE STOPPER ASSEMBLY.
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.
1) Using a modeling knife, carefully cut
off the rear portion of one of the 3 nylon tubes
leaving 1/2” protruding from the rear of the
stopper. This will be the fuel pick up tube.
C
A
B
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. The 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 satisfied with the alignment of
the stopper assembly tighten the 3 x 20mm
machine screw until the rubber stopper ex-
pands 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 difficult to determine which
is which.

CHRISTEN HUSKY Instruction Manual.
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Fuel tank.
 7) Slide the fuel tank into the fuselage. Guide
the lines from the tank through the hole in the
firewall.
 8) Use plywood template to hold in place
the fuel tank with C/A glue to secure the fuel
tank inside the fuselage.
C/A glue.
9) Connect the lines from the tank to the engine
and muffler. The vent line will connect to the
muffler and the line from the clunk to the
carburetor.
Vent tube.
Fuel pick up tube.
Fuel fill tube.
A
C/A glue.
C
B
Blow through one of the lines to en-
sure the fuel lines have not become kinked
inside the fuel tank compartment. Air
should flow through easily.
INSTALLING THE FUSELAGE SERVOS.
1) Install the rubber grommets and brass
collets onto the throttle servo. Test fit 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
may need to 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.

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

CHRISTEN HUSKY Instruction Manual.
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3) Use a drill to drill the four holes in the engine
mount rails.
4.5mm.
4mm.
145mm.
2) Use a pin drill and 4mm drill bit to drill a
small indentation in the mount for the engine
mounting screw.
Cut.
5) Slide the pushrod tube in the firewall and
guide it through the fuel tank mount. Use
medium C/A to glue the tube to the firewall and
the fuel tank mount.
6) Connect the Z-bend in the 450mm throttle
pushrod to the outer hole of the carburetor arm.
Pushrod tube hole.
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.
4) On the fire wall has the location for the
throttle pusshrod tube (pre-drill).
Machine screw M4x30mm.
Machine screw M4x30mm.
Pushrod wire.

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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-
ficient 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.
Trim and cut.
Trim and cut.
Trim and cut.
9) Move the throttle stick to the closed position
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 fiberglass 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.
Machine screw M3x10mm.
Needle valve.
2) While keeping the back edge of the
cowl flush with the marks, align the front of
the cowl with the crankshaft of the engine. The
front of the cowl should be positioned so the
crankshaft is in nearly the middle of the cowl
opening. Use the spinner backplate as a guide.
Hold the cowl firmly in place using pieces of
masking tape.

CHRISTEN HUSKY Instruction Manual.
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 3) Install the muffler and muffler extension
onto the engine and make the cutout in the
cowl for muffler clearance. Connect the fuel
and pressure lines to the carburetor, muffler
and fuel filler valve. Secure the cowl to fuse-
lage using the M3x10mm screws.
ELECTRIC POWER CONVERSION.
1) Locate the items neccessary to install the
electric power conversion included with your
model.
1) Recommendation EP parts as shown (not
included with your model).
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.
- Model size: .75-.90 size models
- Motor: 50mm 310 rev per volt
- Propeller: 14x10 ~ 15x10
- ESC: 60A
- Lipo Batteries: 8 cell 3200mA
3) Attach the motor to the front of the electric
motor box using four 4mm blind nut, four
M3x15mm hex head bolts to secure the motor.
Please see picture shown.
M4x20mm

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Balsa stick.
Electric motor.
4) Locate the plywood battery tray to the
fuselage. Tighten the screws using machine
screws M3x15mm to secure the tray in position.
Epoxy.
M3x15mm.
145mm.
Blind nut.
4mm.
Epoxy.
Tie wraps.
Battery.

CHRISTEN HUSKY Instruction Manual.
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INSTALLING THE SPINNER.
Install the spinner backplate, propeller and
spinner cone.
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.
Recomend Mounting Speed Control inside
Fuselage If Flying off Water.
M3x15mm.
INSTALLING THE AILERON - FLAP SERVOS.
Servos. Small weight.
Thread.
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.
2) Place the servo between the mounting
blocks and space it from the hatch. Use a pencil
to mark the mounting hole locations on the
blocks.
1) Using a small weight (Weighted fuel pick-up
works well) and string, feed the string through
the wing as indicated.
Because the size of servos differ, you
may need to 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.
3) Use drill bit in a pin vise to drill the mouting
holes in the blocks.

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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
servo extension lead. Pull the lead through the
wing and remove the string.
C/A glue.
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.
4) Apply 2-3 drops of thin C/A to each of the
mounting holes. Allow the C/A to cure without
using accelerator.
5) Use dental floss to secure the connection
so they cannot become unplugged.
C/A glue.

CHRISTEN HUSKY Instruction Manual.
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9) Set the aileron hatch in place and use a
Phillips screw driver to install it with four wood
screws.
AILERON PUSHROD HORN INSTALLATION
M2 lock nut.
M2 clevis.
60mm.
Wing.
Aileron.
M2 lock nut.
M2x10mm
INSTALLING THE FLAP SERVO
Repeat the procedure for the aileron servo.
M2 lock nut.
M2 clevis.
Wing.
Flag.
M2 lock nut.
50 mm

CHRISTEN HUSKY Instruction Manual.
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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.
Epoxy.
 6) 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.
Pen.
Trim and cut.
 5) Remove the stabilizer. Using the lines
you just drew as a guide, carefully remove the
covering from between them using a model-
ing knife.
 4) 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.
INSTALLING THE HORIZONTAL STABILIZER.
1) Using a ruler and a pen, locate the
centerline of the horizontal stabilizer, at the trail-
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
this mark down the back of the trailing edge of
the stabilizer.
Draw center line.
2) Using a modeling knife, carefully remove
the covering at mounting slot of horizontal sta-
bilizer ( both side of fuselage).
Cut.
 3) Slide the stabilizer into place in the pre-
cut slot in the rear of the fuselage. The stabi-
lizer should be pushed firmly against the front
of the slot.