Seagull Models SHOCK-CUB 35-55cc User manual

1
ASSEMBLY MANUAL
Specications:
Wingspan--------------- 102.0 in (259.0 cm).
Wing area--------------- 1802.7 sq.ins (1163.0 sq.dm).
Weight------------------- 21.0 lbs (9.6 kg).
Length------------------- 68.2 in (173.3 cm).
Engine/Motor size----- 35-55cc gasoline.
Radio--------------------- 7 channels with 8 servos.
Code : SEA 357

SHOCK CUB 35-55cc Instruction Manual.
2
ank you for choosing the SHOCK CUB 35-55cc ARTF by SG MODELS . e
SHOCK CUB 35-55cc was designed with the intermediate/advanced sport yer in
mind. It is a semi scale airplane which is easy to y and quick to assemble. e air-
frame is conventionally built using balsa, plywood to make it stronger than the av-
erage 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 SHOCK CUB 35-55cc is simply a joy.
is instruction manual is designed to help you build a great ying aeroplane. Please
read this manual throughly before starting assembly of your SHOCK CUB 35-55cc Use the
parts listing below to indentify all parts.
If you are inexperienced 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 ap-
ply.
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 & REPONSIBILITY.
INTRODUCTION
WARNING
KIT CONTENTS
22
1
3
34
5
8
9
6
12
11
10
14
7
13
13
15 15

3
KIT CONTENTS
SEA 357 SHOCK CUB 35-55cc
1. Fuselage
2. Wing set (2)
3. Tail set (2)
4. Canopy and Window
5. Cowling
6. Wing tube
7. Wing tip
8. landing gear
9. Fuel tank
10. Tail wheel
11. Ep Motor box
12. Pushrod set
13. Wing struts (2)
14. Chair
15. Hyper-stolairfoil & high li devices (2)
ADDITIONAL ITEMS REQUIRED
TOOLS & SUPPLIES NEEDED
in cyanoacrylate glue.
Medium 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.
�35-55cc gasoline engine.
�Computer radio 7 channel with 8
servos.
�Glow plug to suit engine.
�Propeller to suit engine.
�Protective foam rubber for radio
system.
HYPERSTOLAIRFOIL & HIGH
LIFT DEVICES
.
Please see below pictures.
1.
2.
3.
4.
M3x10mm

SHOCK CUB 35-55cc Instruction Manual.
4
5.
6.
7.
8.
9.
10.
11.
12.
Epoxy
Epoxy

5
Locate the aileron and ap control horns.
e taller control horn is used for the ailer-
ons, and the shorter horn for the aps.
Use sandpaper to scu the bottom of the
aileron and ap control horns. Use a paper
towel and isopropyl alcohol to remove any
oils or debris from the control horns.
Check the t of the control horns to the ai-
leron and ap. ey should rest ush against
the control surface as shown.
INSTALL THE AILERONS
CONTROL HORN
13.
14.
15.
1.
2.
3.
Ailerons control horn
Flap control horn

SHOCK CUB 35-55cc Instruction Manual.
6
INSTALL FLAP CONTROL HORN
Install the ap control horn using the
same method as same as the aileron con-
trol horns.
Place low-tack tape 1/32 inch (1mm)
from the control horn slot. is will pre-
vent epoxy from getting on the control
surface when the control horns are glued
in place.
Apply epoxy to the area of the control
horns that st into the slots. Use enough
epoxy so the control horns will be fully
bonded to the ed surfaces.
Before the epoxy fully cures, remove the
tape from around the control horn. is
will allow the epoxy to ow around the
control horn, creating a small let be-
tween the control horn and surface for a
ished look and secure bond.
Remove the control horns from the
control surfaces. Apply epoxy to the slot
in the aileron and ap. Make sure the
epoxy gets into the slot for a good bond
between the surfaces and control horn.
Fiberglass control horn
4.
5.
7.
1.
6.
Epoxy
Epoxy

7
INSTALLING THE AILERON 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.
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.
Use drill bit in a pin vise to drill the
mouting holes in the blocks.
Apply 2-3 drops of thin C/A to each
of the mounting holes. Allow the C/A to
cure without using accelerator.
Epoxy
2.
3.
1.
2.
3.
4.
Flap control horn
Minimum servo spec.
Torque : 122 oz-in (8.8 kg-cm) @ 6.0V;
139 oz-in (10.0 kg-cm) @ 7.4V

SHOCK CUB 35-55cc Instruction Manual.
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C/A glue
Use dental oss to secure the connec-
tion so they cannot become unplugged.
Secure the servo to the aileron hatch
using Phillips screwdriver and the screws
provided with the servo.
Apply 1-2 drops of thin C/A to each of
the mounting tabs. Allow the C/A to cure
without using accelerator.
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
5.
9.
10.
11.
12.
6.
7.
8.

9
Set the aileron hatch in place and use a
Phillips screw driver to install it with four
wood screws.
AILERON PUSHROD INSTALLATION
Please see below pictures.
140mm
M3 clevis M3 lock nut
INSTALLING THE FLAP SERVO
Repeat the procedure for the ap servo.
INSTALLING THE FLAP PUSHROD
Repeat the procedure for the aileron
pushrod.
M3x10mm
13.
2.
3.
4.
1.
14.
1.
162mm

SHOCK CUB 35-55cc Instruction Manual.
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175mm
M3 clevis M3 lock nut
M3x10mm
1.6.
7.
8.
9.
2.
3.
4.
5.
192mm

11
.
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.
Install the rubber grommets and brass
collets into all servos. Test t the servos
into the fuselage servo mounts.
Secure the servos with the screws pro-
vided with your radio system.
INSTALLING THE RECEIVER SWITCH
Install the switch into the precut hole in
the side, in the fuselage.
3/32” Hole
.
INSTALLING THE ENGINE SWITCH
Elevator servo
Rudder servo
Rudder servo arm
Elevator servo arm
rottle servo
rottle servo arm
Trim and cut
Switch
Trim and cut
Elevator servo
Elevator servo arm
1.
1.
2.
3.
1.
2.

SHOCK CUB 35-55cc Instruction Manual.
12
.
INSTALLING THE MAIN LANDING
GEAR TO FUSELAGE
Switch
Please see below pictures.
2.
1.
5.
4.
6.
7.
2.
3.

13
M3x15mm
Epoxy
9.13.
8.12.
10.14.
11.15.

SHOCK CUB 35-55cc Instruction Manual.
14
M3x15mm
16.
17.
18.
19.
20.
21.
22.
23.

15
.
24.28.
25.29.
26.30.
27.31.
4x5mm

SHOCK CUB 35-55cc Instruction Manual.
16
INSTALLING THE STOPPER
ASSEMBLY
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.
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.
Carefully bend the second nylon tube up at
a 45º angle. is tube is the vent tube.
Test t the stopper assembly into the tank.
It may be necessary to remove some of the
ashing around the tank opening using a
modeling knife. If ashing is present, make
sure none falls into the tank.
.
Collar
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.
When satised with the alignment of the
stopper assembly tighten the 3 x 20mm ma-
chine screw until the rubber stopper expands
and seals the tank opening. Do not over-
tighten the assembly as this could cause the
tank to split.
32.1.
33.
34.
FUEL TANK INSTALLATION
1.

17
MOUNTING THE ENGINE
Please see below pictures.
1.
2.
4.
5.
6.
7.
3.
7mm
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 determine which is which.

SHOCK CUB 35-55cc Instruction Manual.
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M5x90mm
160mm
8.11.
9.12.
13.
14.
10.
Vent tube
Fuel pick up tube Fuel ll tube
Epoxy
Balsa wood
Connect the lines from the tank to the
engine and muer. e vent line will
connect to the muer and the line from
the clunk tothe carburetor.
Blow through one of the lines to ensure
the fuel lines have not become kinked inside
the fuel tank compartment. Air should ow
through easily.

19
COWLING
Tape the cowl to the fuselage using
low-tack tape.
Use a drill and drill bit to drill the holes
for the cowl mounting screws. Make sure
the cowl position is correct before drill-
ing each hole.
1.
4.
5.
6 .
2.
3.
Please see below pictures.
2mm

SHOCK CUB 35-55cc Instruction Manual.
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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-
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.
M3x10mm
ELECTRIC POWER CONVERSION
Locate the items neccessary to install
the electric power conversion included
with your model.
1.
2.
Recommend the items necessary to in-
stall the electric power conversion parts
included with your model.
- Motor: 360 - 6000 Watts
- Propeller: 24x10 ~ 25x12
- ESC: 160A - 200A
- 12S Lipo
Attach the electric motor box to the re-
wall centered with the cross lines drawn
on the electric motor box and rewall.
Using M5x30mm to secure the motor box
to the rewall. Please see pictures below.
7.
8.
9.
10.