Seagull Models Super chipmunk Size 55 User manual

“Graphics and specifications may change without notice”.
MS:120
ASSEMBLY MANUAL
Specifications:
Wingspan------------------------------63in(160cm).
Wingarea-----------------643.3sq.in(41.5sqdm).
Weight------------------------7.9lbs(3.6kg).
Length------------------------------52.7in(133.8cm).
Engine ------------------0.55cu.in----2-stroke.
0.72cu.in ---- 4-stroke.
Radio-------------------5channelswith 7servos.
Electricconversion:optional
Flyingskilllevelintermediate/advanced.
SIZE 55

SUPER CHIPMUNK SIZE 55.Instruction Manual.
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INTRODUCTION.
ThankyouforchoosingtheSUPERCHIPMUNKSIZE55ARTFbySEAGULLMODELSCOMPANY
LTD. The SUPER CHIPMUNK SIZE 55 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
conventionallybuiltusingbalsa,plywoodtomakeitstrongerthantheaverageARTF,yetthedesign
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 SUPER
CHIPMUNK SIZE 55 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 SUPER CHIPMUNK SIZE 55 . 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
proceduresdesignedtohelpthenewpilotonhiswaytosuccessfulR/Cflight.Theywillalsobeable
to advise on any insurance and safety regulations that may apply.
KIT CONTENTS
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2
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4
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5
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ADDITIONAL ITEMS REQUIRED.
0.55 - 0.72 2-4--stroke.
Computer radio with 7 servos.
Glow plug to suit engine.
Propeller to suit engine.
Protective foam rubber for radio
system.
Siliconefuel line.
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.
KIT CONTENTS.TS
1 Fuselage
2 Wing Set
3 Tail Set
4 Canopy
5 Cowling
6 Wing Tube
7 Pilot
8 Fiberglass Wheel Pants
9 Landing Gear
10 Tail Wheel
11 Hardware Set
HINGING THE FLAP.
M2x10mm.
Drill 1mm.
M2x10mm.

SUPER CHIPMUNK SIZE 55.Instruction Manual.
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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)Removeeach hinge fromthe wingpanel
and aileron and place a T-pin in the center of
each hinge. Slide each hinge into the aileron
untiltheT-pin is snugagainst the aileron.This
will help ensure an equal amount of hinge is
oneithersideofthehingelinewhentheaileron
is mounted to the wing panel.
Hinge.
T-pin.
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
shouldbe maintained betweenthe wing panel
andaileron.
4) Deflect the aileron and completely
saturate each hinge with thin C/A glue. The
aileronsfrontsurfaceshould lightly contactthe
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.
Thehingeisconstructedofaspecial
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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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 anyexcessC/A glue that
may have accumulated on the wing or in the
aileronhinge area.
5)Turnthe wing paneloverand deflectthe
aileron in the opposite direction from the
opposite side. Apply thin C/A glue to each
hinge,making sure that the C/Apenetratesinto
both the aileron and wing panel.
Workthe aileron up and downseveral
times to “work in” the hinges and
check for proper movement.
Note: Aileroncontrol horn.
INSTALL THE AILERONS CONTROL
HORN.
1) Locate the hardware necessary to install
the control horns for the ailerons.
HINGING THE ELEVATOR.
Glue the rudder hinges in place using the
same techniques used to hinge the ailerons.
Fiberglass control horn.
2)Position the Control horn on the Aileron
and use 30-minute Epoxy
Epoxy.

SUPER CHIPMUNK SIZE 55.Instruction Manual.
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Elevator control horn.
Install the elevator control horn using the
same method as same as the aileron control
horns.
INSTALL ELEVATOR CONTROL HORN.
Fiberglass control horn.
Position the Control horn on the Aileron and
use 30-minute Epoxy
INSTALL RUDDER CONTROL HORN.
Repeatsteps toinstall the rudder control horn
as same as steps done for ailerons.
Fiberglass control horn.
Epoxy.
Epoxy.
INSTALL THE FLAP CONTROL HORN.
1) Locate the hardware necessary to install
the control horns for the ailerons.
Fiberglass control horn.
2)Position the Control horn on the Aileron
and use 30-minute Epoxy
Epoxy.

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Ruddercontrolhorn.
ENGINE MOUNT INSTALLATION.
1) Locate the items necessary to install the
engine mount included with your model. .
2) Usefour4x30mm head boltsand four4mm
washers to attach the engine mount rails to
thefirewall.Tighten thescrews .Make sureto
use threadlock on the screws to help prevent
them from vibrating loose.
4x30mm.
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.
INSTALLING THE STOPPER ASSEMBLY.
2) Usinga modeling knife,cut onelength
ofsilicon fuel line. Connectoneend of theline
tothe weighted fuelpick up andtheother end
to the nylon pick up tube.
Venttube. Fuel pick up tube.
Fuel fill tube.
3) Carefully bend the second nylon tube
up at a 45º angle. This tube is the vent tube.
A.
B.

SUPER CHIPMUNK SIZE 55.Instruction Manual.
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 8) Use plywood template to hold in place
the fuel tank with C/A glue to secure the fuel
tank inside the fuselage.
Venttube.
Fuel pick up tube.
Fuel fill tube.
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.
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.
5) With the stopper assembly in place,
the weighted pick-up should rest away from
therear 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.
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.
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
thetank isinstalledinside thefuselage, it may
be difficult to determine which is which.
FUEL TANK INSTALLATION.
 7) Slide the fuel tank into the fuselage. Guide
the lines from the tank through the hole in the
firewall.
Fueltank.
B
C/Aglue. A.
C/Aglue.

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AdjustableServo
connector.
Servoarm.
Loctite secure.
1PCS.
INSTALLING THE FUSELAGE SERVOS.
Throttle servo.
Elevator servo.
Rudder servo.
1) Installthe rubbergrommetsand brass
colletsonto the throttleservo. Testfittheservo
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
mayneedtoadjustthesize of the precutopen-
ing in the mount. The notch in the sides of the
mount allow the servo lead to pass through.
THROTTLE SERVO ARM INSTALLATION.
Installadjustableservoconnectorinthe servo
arm as same as picture below:
Throttleservoarm.
Elevatorservoarm.
Rudderservoarm.
3/32” Hole.
INSTALLING THE SWITCH.
Installthe switch intotheprecut hole inthe
side, in the fuselage.
2) Use a pin drill and 2mm drill bit to drill a
small indentation in the mount for the engine
mounting screw.
2mm.
Switch.
Trimand cut.
110mm.
MOUNTING THE ENGINE.
 1) Position the engine withthedrivewasher
(110mm) forward of the firewall as shown.

SUPER CHIPMUNK SIZE 55.Instruction Manual.
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8) Reinstall the servo horn by sliding the
connector over the pushrod wire. Center the
throttle stick and trim and install the servo horn
perpendicular to the servo center line.
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.
3) Use a drill to drill the four holes in the engine
mount rails.
4) On the fire wall has the location for the
throttle pusshrod tube (pre-drill).
2mm.
Machinescrew M3x25mm.
7) Slide the throttle pushrod wire into the tube.
Position the engine between the mounts. Use
four M3x25mm machine screws to secure the
engine to the mount as shown.
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.
Drill 4mm.

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Becauseof the sizeofthe cowl, itmay be nec-
essaryto useaneedle valveextension for the
highspeedneedle valve. Make thisoutof suf-
ficient length 1.5mm wire and install it into the
end of the needle valve. Secure the wire in
placeby tightening theset screw inthe sideof
the needle valve.
Trim and cut.
COWLING.
Trim and cut.
1)Slidethefiberglass cowl overtheengine
and line up the back edge of the cowl with the
marksyoumadeon the fuselagethentrimand
cut as shown.
Trim and cut.
Machine screw M3x10mm.
Needlevalve.
 3) Installthemuffler andmufflerextension
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.
2) While keeping the back edge of the
cowl flush with the marks, align the front of
thecowlwiththecrankshaftoftheengine. The
front of the cowl should be positioned so the
crankshaft is in nearly the middle of the cowl
opening.Usethe spinner backplate as a guide.
Hold the cowl firmly in place using pieces of
masking tape.

SUPER CHIPMUNK SIZE 55.Instruction Manual.
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4mm.
4mm.
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.
Blindnut.
ELECTRIC POWER CONVERSION.
1) Locate the items neccessary to install the
electric power conversion 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: .45-52 size models
- Motor: 35mm 830 rev per volt
- Propeller: 12x6 ~ 13=x6
- ESC: 50A
- Lipo Batteries: 4 cell 3200mA
Recommendation EP parts as shown (not
included with your model)
M4x20mm.

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Battery.
Balsa stick.
Electric motor.
Epoxy.
110mm.
Epoxy.
M3x15mm.
INSTALLING THE SPINNER.
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.
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.

SUPER CHIPMUNK SIZE 55.Instruction Manual.
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3) Apply 2-3 drops of thin C/A to each of the
mounting holes.Allow the C/A to cure without
using accelerator.
5) Secure the servo to the aileron hatch using
Phillips screwdriver and the screws provided
with the servo.
4) Use dental floss to secure the connection
so they cannot become unplugged.
6) Apply 1-2 drops of thin C/A to each of the
mounting tabs. Allow the C/A to cure without
using accelerator.
INSTALLING THEAILERON - FLAP SERVOS.
Servos. Smallweight.
Thread.
Because the size of servos differ, you
mayneed to adjust the size of the precutopen-
ing in the mount. The notch in the sides of
themountallowtheservoleadtopassthrough.
1) Place the servo between the mounting
blocksand space itfromthehatch.Useapencil
to mark the mounting hole locations on the
blocks.
2) Use drill bit in a pin vise to drill the mouting
holes in the blocks.

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7) 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. Pullthelead through the
wing and remove the string.
AILERONPUSHRODHORN INSTALLATION
9) Set the aileron hatch in place and use a
Phillips screw driver to install it with four wood
screws.
Mark.
Pen.
M2x10mm.

SUPER CHIPMUNK SIZE 55.Instruction Manual.
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Wing. M2lock nut.
Aileron.
3) Connect the linkage as shown and secure
the control wire with a snap keeper.
FLAPPUSHRODHORN INSTALLATION
Snapkeeper.
Servoarm.
8mm Snapkeeper.
M2 lock nut. Metalclevis.
INSTALLINGLANDING GEAR
1)Locate items necessary to install Spring
Landing Gear.
1) Mark the control wire where it crosses the
servo arm hole.
Bend at the mark.
Snapkeeper.
Servoarm.
8mm Snapkeeper.
2)Make a 90-degreebend at themarkand cut
offtheexcesswireleaving 8mm pastthe bend.
M2 lock nut. Metalclevis.
8mm.
Cut.

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2)Install Spring Landing Gear into Wings.
M3x15mm.
LandingGear.
Plastic plate.
Drill 2mm.
Pen.
Drill 1.5mm.
Wheel Pant.
M2x10mm.

SUPER CHIPMUNK SIZE 55.Instruction Manual.
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4)Attach Fiberglass Wheel Pants into landing
Gear.
3)Install Wheels into Fiberglass Wheels
Pants.
Washer. Epoxy.
Alxe.
Wheel .
M3x10mm.
Drillhole
Wheel collar.
Alxe.

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INSTALLINGTHE 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 downtheback ofthe trailing edgeof
the stabilizer.
2)Using a modelingknife,carefullyremove
thecoveringat mountingslotofhorizontal sta-
bilizer ( both side of fuselage).
Pen.
Trimand cut.
 5) Remove thestabilizer. Usingthe lines
youjust drewasa guide,carefully remove the
covering from between them using a model-
ingknife.
 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.
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.
Whencuttingthrough the coveringtore-
move it, cut with only enough pressure
toonly cutthrough thecovering 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.

SUPER CHIPMUNK SIZE 55.Instruction Manual.
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INSTALLING VERITICAL FIN.
Fill epoxy.
90º
Vertical
Stabilizer.
Horizontal
Stabilizer.
2) Slide the vertical stabilizer back in
place. Using a triangle, check to ensure that
thevertical stabilizer isaligned 90ºtothe hori-
zontal stabilizer.
1) 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.
3) When you are sure that everything is
alignedcorrectly, mixup a generous amountof
Flash30MinuteEpoxy. Applyathinlayertothe
mounting slot and to bottom of the vertical sta-
bilizer mounting area. Apply epoxy to the bot-
tomand top edgesof thefillerblock andto the
lower hinge also. Set the stabilizer in place
andrealign. Double check all of your measure-
mentsoncemorebeforetheepoxycures.Hold
the stabilizer in place with T-pins or masking
tape and remove any excess epoxy using a
papertowel andrubbingalcohol. Allow the ep-
oxy to fully cure before proceeding.
C/Aglue.
C/Aglue.
 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
topand bottom ofthe stabilizer mountingarea
and to the stabilizer mounting platform sides
in the fuselage. Slide the stabilizer in place
and realign. Double check all of your mea-
surementsoncemore before theepoxycures.
Holdthestabilizerin place withT-pinsormask-
ing tape and remove any excess epoxy using
a paper towel and rubbing alcohol.
Fill epoxy.
Fill epoxy.