Seagull Models GIANT SCALE P-47 RAZORBACK 50-61cc/EP ARF User manual

1
ASSEMBLY MANUAL
Specications:
Wingspan--------------- 81.0 in (206.0 cm).
Wing area--------------- 1200.3 sq.ins (77.4 sq.dm).
Weight------------------- 22.0 lbs (10.0 kg).
Length------------------- 67.6 in (171.6 cm).
Engine/Motor size----- 50-61cc gasoline.
Radio--------------------- 9 channels with 13 servos.
Code : SEA 306

GIANT SCALE P-47 RAZORBACK 50-61cc/EP ARF Instruction Manual.
2
ank you for choosing the GIANT SCALE P-47 RAZORBACK 50-61cc/EP ARF ARTF by SG
MODELS . e GIANT SCALE P-47 RAZORBACK 50-61cc/EP ARF was designed with the in-
termediate/advancedsportyerinmind.It isasemi scale airplanewhichiseasytoyandquick
to assemble. e 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 nd that most
of the work has been done for you already. e motor mount has been tted and the hinges
are pre-installed. Flying the GIANT SCALE P-47 RAZORBACK 50-61cc/EP ARF 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 GIANT SCALE P-47 RAZORBACK
50-61cc/EP ARF Use the parts listing below to indentify all parts.
Please be aware that this aeroplane is not a toy and if assembled or used incorrectly it is ca-
pable of causing injury to people or property. WHEN YOU FLY THIS AEROPLANE YOU
ASSUME ALL RISK & REPONSIBILITY.
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 apply.
INTRODUCTION
WARNING
KIT CONTENTS
22
4
5
1
3
3
6
7
8
9
10
12
11
13

3
KIT CONTENTS
SEA306 GIANT SCALE P-47 RAZOR-
BACK 50-61cc/EP ARF
1. Fuselage
2. Wing set (2)
3. Tail set (2)
4. Canopy
5. Cowling
6. Wing tube
7. Pilot
8. landing gear
9. Fuel tank
10. Tail wheel
11. Pushrod set
12. Ep Motor box
13. Bomb and gune
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.
�50-61cc gasoline engine.
�Computer radio 9-12 channel
with 13 servos.
�Glow plug to suit engine.
�Propeller to suit engine.
�Protective foam rubber for radio
system.
� Aircra shelves.
INSTALL THE AILERONS
CONTROL HORN
Fiberglass control horn.
1.
Ailerons control horn.
Epoxy.
2.
3.
4.
Epoxy.

GIANT SCALE P-47 RAZORBACK 50-61cc/EP ARF Instruction Manual.
4
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 dental oss or heatshrunk tube to
secure the connection so they cannot be-
come unplugged.
C/A glue.
INSTALLING THE AILERON SERVOS
5.
6.
1.
2.
Use drill bit in a pin vise to drill the mout-
ing 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.
1.5mm.
3.
4.
Mininum servo spec.
Torqu e : 110 oz-in (7.9 kg-cm) @ 4.8V;
131 oz-in (9.4 kg-cm) @ 6.0V
Ailerons servo. Flap servo.

5
Secure the servo to the aileron hatch us-
ing 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.
7.
8.
9 .
10.
11.
12.
Set the aileron hatch in place and use a
Phillips screw driver to install it with four
wood screws.
3x10mm.
13.

GIANT SCALE P-47 RAZORBACK 50-61cc/EP ARF Instruction Manual.
6
AILERON PUSHROD INSTALLATION
Please see below pictures.
Please see below pictures.
INSTALLING THE FLAP PUSHROD
3.
14.
Attach the ap servo to the ap servo
cover. Center the ap servo (or set the
values to 0 for both up and down) and in-
stall the servo arm perpendicular to the
servo centerline. e clevis will attach to
the arm 13/16 inches (21mm) from the
center of the arm.
3.
4.
Attach the ap linkage to the control
horn. Slide the clevis retainer over the
forks of the clevis.
1.
1.
2.
2.
60mm.
70mm.
M3 clevis. M3 lock nut.
M3 clevis. M3 lock nut.

7
Use a pin vise and 3/32-inch (2mm) drill
bit to clear the paint from the ap control
horn.
5.
7.
6.
Route the servo lead for the ap servo out
at the root of the wing. Connect the ap
servo to the radio system. With the radio
system on, place the ap servo into posi-
tion.
Attach the clevis to the ap servo arm.
8.
Adjust the linkage so the ap is in the
mid-ap position. It may take a few tries
to properly adjust the linkage.
9.
Once adjusted, make sure all clevis re-
tainers are in position. Apply a drop of
threadlock near the clevis, then tighten
the nut against the clevis to keep the link-
age from changing length inside the wing.
10.
3x10mm.

GIANT SCALE P-47 RAZORBACK 50-61cc/EP ARF Instruction Manual.
8
12.
Set the ap control at the transmitter to
the down ap position. Adjust the ap
travel at the transmitter until it matches
the control throws listed in this manual.
INSTALLING LANDING GEAR
Locate items necessary to install Sprin
Landing Gear.
16.
13.
14.
Fit the ap linkage cover into position.
Check the operation of the ap to make
sure the cover does not interfere with the
ap linkage.
Use canopy glue to attach the cover to the
wing. Use low-tack tape to keep the cover
in position until the adhesive fully cures.
15.
Trim the ap linkage cover using a hobby
knife and hobby scissors.
Epoxy.
11.

9
Install retractable landing gear at the
Wing.
1.
3.
5.
2.
4.
Epoxy.
6.
7.
8.
Epoxy.

GIANT SCALE P-47 RAZORBACK 50-61cc/EP ARF Instruction Manual.
10
15.
9.13.
14.
16.
10.
11.
12.

11
21.
Mark.
19.
20.
22.
17.
18.
2mm.
23.
24.
3x15mm.
C/A glue.

GIANT SCALE P-47 RAZORBACK 50-61cc/EP ARF Instruction Manual.
12
26.
25.
27.
28.
29.
30.
31.
32.
Loctite.

13
Install servo for Retractable landing gear.
Note: If you clamber down too slow servo
speed, servo will not fold when ying.
33.
A
M3x12mm.
34.
35.
36.
37.
A
Mininum servo spec.
Torqu e : 222 oz-in (16 kg-cm) @ 4.8V;
278 oz-in (20 kg-cm) @ 6.0V
38.
39.
Tail gear
servo.
Electric retractable
landing gear servo.
Landing gear
hatch servo.

GIANT SCALE P-47 RAZORBACK 50-61cc/EP ARF Instruction Manual.
14
42.
43.
44.
45.
46.
47.
M3x4mm.
Collar.
Slide the wheel on the axle, then secure it
using the wheel collar.
40.
41.
40mm.
M3 clevis. M3 lock nut.
3x6mm.
48.
M3x4mm.
Collar.
Loctite.

15
49.
50.
51.
Install the cap on the wing.
52.
Epoxy.
53.
54.
55.
Epoxy.
56.
Epoxy.

GIANT SCALE P-47 RAZORBACK 50-61cc/EP ARF Instruction Manual.
16
e servo motor should be at least 25mm
in size.
Note: e speed of this servo you to be in
the slowest mode then you gradually in-
crease to suit the speed ranked.
Encourage the use of servos such as
Spektrum.a5060.
57.
58.
59.
60.
25mm.
61.
62.
30mm.
M3 clevis. M3 lock nut.
63.
64.
Mininum servo.
Torqu e : 8.7 oz-in (6.3 kg-cm) @ 6V;
118 oz-in (8.5 kg-cm) @ 8.4V

17
65.
66.
67.
68.
Secure the landing gear doors to the land-
ing gear struts.
OPTIONAL RETRACTABLE
LANDING GEAR.
Electric retractable landing gear is not
included in this kit, however it is a very
popular add-on as optional. If you want
to use retracts in your GIANT SCALE P-47
RAZORBACK 50-61cc/EP ARF , we rec-
ommend that you buy a good set of elec-
tric retracts as the Himark AM07 Main
Gear shown as below. se retract units
will bolt right into the GIANT SCALE P-47
RAZORBACK 50-61cc/EP ARF inplace of
the standard ed gear.
69.
70.
Note: e assembly instructions as you
make electricity similar to the picture 9 +
11 + 12 +15 +16.

GIANT SCALE P-47 RAZORBACK 50-61cc/EP ARF Instruction Manual.
18
1.
2.
7.
3.
4.8.
5.
6.

19
9.
10.
11.
12.
13.
16.
15.
14.

GIANT SCALE P-47 RAZORBACK 50-61cc/EP ARF Instruction Manual.
20
17.
18.
19.
20.
21.
3x6mm.
22.
23.
24 .
Loctite.