THUNDER TIGER 4315-Y Assembly Manual

1

Warranty

This kit is guaranteed to be free from defects in material and workmanship at the date of purchase.
It does not cover any damage caused by use or modification. The warranty does not extend beyond
the product itself and is limited only to the original cost of the kit. By the act of building this user­assembled kit, the user accepts all resulting liability for damage caused by the final product. If the
buyer is not prepared to accept this liability, it can be returned new and unused to the place of
purchase for a refund.

Notice: Adult Supervision Required

This is not a toy. Assembly and flying of this product requires adult supervision. Read through this
book completely and become familiar with the assembly and flight of this airplane. Inspect all parts
for completeness and damage. Contact Thunder Tiger authorized agent if you find any problem or
need tech support.

No.4315-Y Super Cub EP

Wing Span: 39.75"(1010mm) Length: 26.75

W.e?W.?hg
?W.YeW.Y?hg
?7U?e7U
?@1?e@1
?@@?e@@

(680mm) Wing Area: 232 sq.in.(15dm2)

Weight: 16.5oz.(470g) Motor: Super 370 Motor with 2.67:1 gearbox included

2

Table of Contents

Introduction

Pre-Assembly Notes ....................3

Other Items Required

..............3

Tools and Supplies Needed

.......3

Part Drawings

....................................4

Assembly

Wing ................................................5

Tail

................................................6

Fuselage

.......................................7

Servo

...................................8

First Flights

Balancing ........................................11

Operation Checks

...........................12

Flying

..............................................14

Repair

....................................................16

INTRODUCTION

All of us at Thunder Tiger want to thank you for choosing the Super Cub EP park flyer. This kit has been
engineered to go together quickly and easily while still providing you with great looks and exceptional flying
performance. In order to insure that your assembly process will be as smooth and uneventful as possible, we
strongly suggest that you read this assembly manual thoroughly before beginning to assemble this kit. We are
confident that you will enjoy flying this Super Cub and it will provide a lot of rewarding flights.

Thunder Tiger guarantees that you should enjoy the trouble free use from our R/C products. Thunder Tiger
products have been sold worldwide through the authorized distributors that are supported directly and rapidly
from Thunder Tiger. You may find that Thunder Tiger is always pursuing to explore new items creatively with
highest quality. To update the latest product information and to get the best technical support, please fee free to
contact your local hobby shops or Thunder Tiger authorized distributor.

Modeling Organizations

The Super Cub EP park flyer is a serious radio-controlled model airplane. You should obtain help with the
airplane for preflight and flight trainning from an experience pilot to insure maximum enjoyment. Many programs
are very willing to help, check www.modelaircraft.org . Also, it is recommended that you join one the following
organizations. They can help you find a club in your area plus offer insurance programs to protect you.

Super Cub

Academy of Model Aeronautics
5151 East Memorial Dr.Muncie, IN 47302
800-435-9262 Fax [phone]
www.modelaircraft.org

Sport Flyers of America
POB 7993 Haledon, NJ 07508
800-745-3597 Fax [phone]
www.modelavaiton.com

3

PRE-ASSEMBLY NOTES

1. Please assemble your model according to this

instruction manual. Do not attempt to modify or change
your Super Cub in any way as doing so may adversely
change its flying characteristics.

2. For Ready To Fly ( Super Combo) version, some

assembly steps are finished by factory craftsman. We
recommend you to read the manual to familiarize
yourself with the airplane.

3. Before you begin please check entire contents of this

kit against the parts list and parts drawings to be sure
that no parts are missing or damaged. This will also
help you to become familiar with each component.

4. If you find that any parts are either missing or

damaged, please contact with your dealer immediately
for replacement. Note: Your dealer cannot accept kits
from return if construction has begun.

e-mail:t

[e-mail]

Remember we have worked very hard to make this model
as easy to assemble as possible while still maintaining our
high standard of quality. Your assembly of this model is
very important and will determine the final flight
capabilities of your Super Cub, so use extra care and
follow the assembly procedure exactly.

OTHER ITEMS REQUIRED

Radio: You will need at least a 3

channel radio control system with 2
micro servos for your Super Cub.

3

2

ACE

8304

@?he
?J5?he
W.Y?he

?W.Yhf
?7H?hf

J5hg
?W.Yhg
W.Y?hg
7H

?J5?

W.Y?
?W.Y
?7H?
J5

?W.Y
W.Y?

7H
?J5?
W.Y?
7H

?J5?
?.Y?

ACE

8305

ESC-10: ACE ESC-10 ( P/N
ACE8015) with BEC for controlling
the power of your Super Cub as well
as eliminating the need of a
separate radio battery. The BEC(
Battery Eliminator Circuitry) in this
controller will automatically turn off
the power to the motor when the
battery reaches a factory present
discharge level leaving about 10 minutes of flight time for
the radio system.

10A BEC

ACE 8015

Battery: We recommend the use of
a 7 cell 8.4V 600mAh AAA size
NiMH battery ( P/N ACE2924)

8.4V 600mAh AAA size
ACE 2924

Charger: You will need a quick
charger to charger your power
battery. We recommend our
economical DC Quick Filed Charger
(P/N

ACE 2604AC/B

).

12V 900mAh

ACE 2604AC/B

TOOLS AND SUPPLIES NEEDED

Mixing Stick for Epoxy
Medium Grit Sandpaper
Rubbing Alcohol
Paper Towel
Hobby Knife
1/16” drill bit 1.5mm
Ruler
Pen, Pencil or Marker
Small Screw Drivers
Scissors
Needle Nose Pliers

ACE 8304 3ch Single

Stick Radio

ACE 8305 3ch

Dual Stick Radio

No.8117 Micro Servo

4

PART DRAWINGS

AS6313 Motor Mount

AS6336
Rubber Wheel

Rear Motor Mount (1)

Fuselage (1)

Front Motor Mount (1)

Bushing (2)

370 Super Motor (1)

Threaded Wire (2)

Spacer (1)

M3 Nut (2)

Main Gear/Shaft (1)

Pinion Drive Gear (1)

2x8mm

Self-Tapping Screw (2)

Main Wing ( L/1, R/1)

Landing Gear (1)

Propeller (1)

3x3mm

Set Screw (2)

Decal A (1)

Clevis (2)

Wheel Collar (2)

3x20

Self-Tapping Screw (2)

ControlHorn (2)

AS6314
370 Super Motor

Wing Center Cover (1) Wing Joiner (2) 3x25mm Wood Screw (1)

Horizontal Tail/Elevator (1)

Vertical Tail/Rudder (1)

Nose Cone (1)

Spinner (1)

Hook (4)Hook Joint (6)

Tube (L/2)

Pushrod (2) Clevis (2)

Locking Plate (2)

Cowling (1)

Wheel (2)

Decal B (1)

2.6x10

Self-Tapping Screw (3)

3x5mm

Machine Screw (2)

Tube (S/2)

Strut Joint (2)

Skid (1)

Firewall (1)

Landing Gear Retainer (1)

AS6309Y Cowling

AS6308Y PushrodAS6304Y Main Wing

AS6305Y Horizontal Tail

AS6333B Propeller Set

Fairing Retainer (L/1, R/1)

Landing Gear Fairing (2)

AS6307Y Wing Strut AS6316 Gear Shaft Set

AS6364 Decal

AS6310Y Landing Gear

AS6306Y Vertical Tail

AS6303Y Fuselage

AS6312Y Snap-On Control Horn

Open the box and check that you have all the parts as shown below. If anything is missing please contact your dealer.

5

ASSEMBLY / WING

1. Carefully trim the strut mount hole in square then
trial fit the strut mount in the hole. Make sure the
strut mount is level with the wing surface.

2. Mix the furnished 5-min Epoxy to glue the strut
mount. Hint: Apply equal volume of cement in
bottle A and B on a cardboard then fully mix
them with a small stick. Note: This 5-min Epoxy
allows working time of only 3 minutes after
mixing.

3. For novice, we would recommend to epoxy one
strut mount at one time. Note the orientation

(see next step) of strut mount and make sure it is
level with the wing surface.

4. The finished strut mounts are shown.

5. Locate the wing center cover, use 100 grit sand
paper( not furnished) slightly sand the contact
area of center wing cover.

6. Tr ial fit the wing halves on center wing cover.

Make sure the wing root contacts the center wing
cover rib.

Wing Assembly

6

ASSEMBLY / TAILS

7. Apply 5-Min epoxy at the contact area then place
the two wing halves and snap on the wing joiners
to secure both wing halves.

Note: Never push too hard to snap on the joiners
or you may damage the wing.

Hint: Wipe off any excess epoxy with rubbing
alcohol before it has cured.

8. Locate the hooks and plastic tubs then glue the
hooks onto one end of the tubs all the way in.

9. Locate the clevises, threaded wires and Y strut
joiners. Assemble them as shown.

10.Glue the struts to the Y joiner( one long, one
short). Note the orientation of hook opening and
the upper tube is shorter as photo shown.

11.Locate the control horn and locking plate then
“Push-N-Lock” the control horn in place as
shown. Note: Do not push too hard but gently all
the way in so the control horn contacts the
surface of rudder at both sides and secured in
place firmly.

12.Do the same way on the elevator. Make sure you
are in correct orientation before installing the
locking plate.

Tails Installation

7

ASSEMBLY / FUSELAGE

13.Trail fit the horizontal tail and vertical tail in the
fuselage, epoxy them in place when satisfied.
Make sure they are perpendicular to each other.

14.Tr ial fit the plastic firewall on the front of
fuselage. Apply Epoxy at the rim of front fuselage
then glue the firewall in place.

15.Epoxy the skid in place as shown.

16.Epoxy two wing strut mounts at the bottom of
fuselage. Note the orientation of the mounts.

17.Insert the landing gear in the fuselage then
“Push-N-Lock” the landing gear retainer. Make
sure it locks into place.

18.Locate two fairing retainers and install the
retainer in place. Next insert fairing to the
retainer and make sure the root of fairing contact
fuselage. You may cut two 2" long and 3/4" wide
tapes from the decal at blank area then tape the
leading edge of fairing on the landing gear.

5 2

Fuselage

8

SERVO, ESC,RX & BATTERY INSTALLATION

19.Use furnished Allen Wrench to secure the collar
in place with 3x3mm set screws. Make sure the
wheel rotates freely.

20.Locate the EDS (electric drive system) and
remove the spinner and nuts. Note: Remove the
nose cone by rotating it counter-clockwise about
1/4 turn.

1/4

21.Secure the EDS with furnished two 3x20 self­tapping screws. Thread the Controller (ACE
ESC-10) wire through the firewall from inside of
fuselage then connect to the motor wire firmly.
You may apply a piece of tape to prevent from it
loose. Next thread the wire back to fuselage.

3x20mm

22.Drill 1/16” hole on the molded dot of the cowling.

1.5mm

23.Apply cowl decals first then secure the cowl in
place with two 2 x 8 mm wood screws.

2x8mm

24.Apply thin double side tape on the micro servos
as shown.

25.Remove a foam spacer from the servo well.
Glue the micro servo to the wall of servo well.

Servo, ESC, RX & Battery Installation

9

SERVO, ESC,RX & BATTERY INSTALLATION

26.Use the same way to install the other servo.
Insert the foam spacer between two servos.

27.Connect the pushrods to the servo horn when
servos are in neutral position.

28.Adjust the small clevises and make sure all the
control surfaces are level.

29.Connect the motor wire, next attach the
controller( ESC-10 Shown) on the wall by using
the double side foam tape. Next, install the
controller switch.

30.Use switch plate as template to drill 2mm holes
at the molded slot. Secure switch with two
screws provided with ACE ESC-10 shown.

31.Connect all servo wires and controller wire.
Normally the throttle wire is pluged into channel
3 (Throttle). The servo wires plug into channel
1(Rudder) and channel 2 (Elevator).

10

SERVO, ESC,RX & BATTERY INSTALLATION

32.Drill a small hole on the fuselage at right side
then thread the antenna through the fuselage.
Route the antenna to the tail and tape it in place.

33.Connect the battery wire to speed controller and
place the battery in the battery case. (ACE 2924

8.4V 7-cell 600MAH Battery)

34.You will have to bow the cover plate to close or
pry with finger to remove the cover plate. Note
the opening is forward to the nose for battery
cooling.

35.Make sure the shaft has a little bit of free play
when you pull and push. If it is too tight then
loosen the nut for more space.

36.Next install the propeller and spinner, always
take great care on the motor and swinging
propeller as it is dangerous and may cause
serious injury, if you are a beginner we
recommend you read the manual of radio and
speed controller thoroughly to understand how to
set up and control the motor.

Note: Nor mally the propeller is hard to rotate as
the geared 370 motor comes with super powerful
magnets. Never rotate the propeller improperly
as it may hurt the gears.

11

BALANCE

37.Install the main wing, note there is a pin at front
center cover which you have to insert it into a
hole on the bulkhead in the fuselage.

Secure the wing with a 3x35 mm wood screw.
Note: The mounting plate is underneath the wing
mount area, never push hard when securing the
screw.

3x35 mm

37.Hook up the struts as illustrated.

38.Snap on the clevis to the strut mount. Adjust the
clevis if necessary.

39.Apply all decals on the plane. Congratulations!
Now you are ready to fly.

90˚

A

A=A'

A'

2" (5cm)

C.G.

C.G.

Level

Level

Balance

If nose drops, tape a penny to
bottom fuselage at tail end.
If tail drops, tape a penny to
inside of cowl.

5

12

OPERATION CHECK

1. Install eight AA batteries in the transmitter,
referring to the radio system’s instruction manual.

2. Review the illustration to become familiar with
your airborne radio components. Following are
description of these components:

❚ ESC: This device controls power to the motor
unit. It will cut-off power to motor when voltage
starts to drop.

❚ Receiver: Receives the radio commands from
the transmitter and sends them to the servos
which converts the command to motion which, in
turn, moves the rudder or elevator.

❚ NiMH Battery: Rechargeable battery pack that
provides power to the motor unit and the radio
system.

❚ Motor Unit: Contains a DC electric motor, a
gear drive, and a propeller that provides the
thrust for the airplane.

3. Tur n the transmitter on and then the receiver and
refer to illustrations

( Always turn transmitter on first then the receiver
and turn receiver off first then the transmitter )

❚ Move the stick right and make sure rudder
moves to the right.

❚ Move the stick left and make sure rudder
moves left.

❚ Move the stick upward and make sure the
elevator moves down.

❚ Move the stick downward and make sure the
elevator moves up.

❚ Also check for the proper amount of throw and
make sure the rudder and elevator are in neutral
when the stick and the trim levers are in the
center.

4. Hang on the airplane and throttle up the stick.
The motor unit should come on. Make sure the
propeller is trying to pull the airplane forward.
Throttle down or turn off the switch to stop the
motor.

You are now ready to go flying!

0N

OFF

ELEVATOR SERVO

RUDDER SERVO

BATTERY

RECEIVER

MOTOR UNIT

SWITCH

Rx

Motor

ACE

ESC-10

Batt

Sw

Operation Check

13

CHECK THE RADIO

Set the trim in neutral position.

Set the sticks in neutral position

Check the position of rudder and

elevator (if these are in neutral).

Move the stick to the right.

Move the stick to the left.

Move the stick up. Move the stick down. Move the stick down and right.

RIGHT AND UPUPDOWN

LEFT TURNRIGHT TURNNEUTRAL

THE DIRECTION OF MOVEMENT (RUDDER AND ELEVATOR)

To adjust neutral, unsnap the
clevis from
the horn and screw in or out

Neutral

app. 10mm

Rudder

Elevator

app. 10mm

Neutral

app. 5mm
app. 5mm

ࢫ௷ࡗ5mm

Ш௷ࡗ10mm

14

FLYING

You should have a flight instructor to teach you how to
fly the Super Cub. Like a real airplane, you must
have an understanding of how to fly the model before
launch, or you will probably not be successful. Check
at your hobby shop or call the AMA (in the front of this
book) for flying clubs in your area.

1.Pre-Flight Checklist

❚ Choose a calm day for your first flights. Never fly in

winds over 10 mph. Also, choose an open field
with no obstacles or people.

❚ Charge the receiver battery.
❚ Make sure there are no other pilots operating on on

the same channel (frequency) as you are. If you
turn your radio on while others are flying, you will
cause them to crash.

❚ Check your radio for good range (50 ft. with the

antenna collapsed) and proper operation.

❚ 3

❚
❚
❚ 20

2.Take-off

❚ A proper hand-launch of the air plane is necessary

for flight. It must be launched into the wind with a
firm toss. The airplane must be tossed level or
even pointed a little down. It should never be
thrown upward, or it will stall and crash.

❚ When launching the plane, make sure your fingers

are behind struts. 2 inches aft the struts is
recommended.

❚
❚

3.Flight

❚ Steer very gently right and left to keep the wings

level. Let the airplane climb out gradually and
gently until it reaches a comfortable cruise altitude
at full flight speed. Always keep the aiplane
upwind of yourself and within a reasonable
distance so you can see what it is doing.
Remember, when the plane is coming toward to
you, when you move the stick to the right, the
aiplane will go to the left from your point of view.
This is the hardest thing to learn. Initially, you can
keep your body pointed in the same direction as

the airplane and look over your shoulder. That
helps.

❚ Usually, only small stick movements are required.

Try to keep your flying smooth. You can tur n the
plane by bumping small amounts of rudder and
then return to neutral. Use the elevator to keep
the airplane at the desired altitude. After awhile,
coordinate your turns with the elevator; i.e., bank
the plane with a little bit of rudder, then feed in
some up elevator to maintain the turn at the same
altitude.

❚ If the plane tends to turn one way or the other use

the trim lever on the control stick to neutralize the
flight. Same thing applies if the plane wants to
climb or dive.

❚ You can expect 3-4 minutes of “power-on” flight.

You should always maintain enough altitude so
you can set up a landing approach when the auto­cut off device turns the motor off and you begin
the glide.

❚
❚
❚
❚ 10
❚ 4~5

4.Landing

❚ When the motor cuts-off, set up your landing

approach. Always try to land INTO THE WIND.
Keep your turns gradual and only use elevator to
maintain a gradual glide. Since the motor is off,
you can no longer climb and the plane slows
down. If you feed in too much up elevator, the
plane will stall and may crash.

❚ Just before touchdown, “flare” the plane by adding

up elevator. The plane should slow down even
more and come in for a gentle landing. Don’t add
too much elevator, too soon!

❚ Walk over to the plane and turn off the switch on

the plane, then the transmitter switch.

❚ Remove the batteries and let them cool off before

charging up again.

❚ Check over the plane to make sure nothing

loosened.

❚
❚

1~2

❚

❚

Flying

15

FLYING

Wind Direction

Straight

Correct

and level with ground

Incorrect

Wind Direction

Wind

3 ft.

Launch firmly into wind straight and

level. Do not throw upwards!

Example of a turn using

only rudder

Launch

Landing

Example of a turn using

rudder then elevator

16

Crash damage is not covered under the warranty!

If damage occurs, use small amount of furnished 5­min Epoxy to repair broken foam. Clear packing
tape will hold the parts together; leave it on patch for
added strength. Re-balance the plane after you
repaired.

IN CASE OF TROUBLE

1. If motor does not run when Throttle Stick is up,
make sure all the wires are well connected.
Check and follow the manufacturer’s manual of
controller.

2. If the radio is erratic(glitches), check that the
transmitter and receiver antennas are extended
to their full length. Make sure the transmitter
batteries are fresh. Make sure no one else is
operation on your channel(frequency) in the
immediate vicinity.

3. If the plane does not fly properly, make sure you
are being gentle with the control inputs. Make
sure the plane is balanced properly. Make sure
all the wing and tail surfaces are flat, true, and
properly attached and aligned.

If your trouble persists, call authorized dealer for
technical help.

Conclusion

To defeat the laws of gravity and take to the wing is
both challenging and thrilling. We hope you enjoy
your entry into the fascination world of R/C flight and
make it your hobby for a lifetime. Please let Thunder
Tiger be your chosen brand, no matter what
direction you progress.

Repair

THUNDER TIGER CORPORATION http://www.thundertiger.com

JE6696