Hangar 9 Piper J-3 Cub 40 User manual

Wingspan: ..................................... 80 in (2032mm)
Fuselage length: ......................... 49.9 in (1268mm)
Wing area: .......................... 919 sq in (59.3 sq dm)
Assembly mAnuAl
Piper J-3 Cub
With Power 46
Weight: ............................... 6.75–7.5 lb (3–3.4 kg)
Motor: ........................ E-flite®Power 46 (included)
Radio: .................................. 4-channel w/4 servos
Specifications

2
Contents of Kit ....................................................................3
Additional Required Equipment........................................................3
Covering Colors ...................................................................3
Additional Required Tools and Adhesives................................................4
Field Equipment Required............................................................4
Date of Purchase Warranty Period .....................................................5
Limited Warranty...................................................................5
Damage Limits ....................................................................5
Safety Precautions .................................................................5
Questions, Assistance, and Repairs ....................................................6
Inspection or Repairs ...............................................................6
Warranty Inspection and Repairs.......................................................6
Non-Warranty Repairs...............................................................6
Safety, Precautions, and Warnings .....................................................7
Before Starting Assembly ............................................................7
Using the Manual ..................................................................7
Section 1: Hinge Installation..........................................................8
Section 2: Motor and Cowling Installation ..............................................11
Section 3: Servo Installation (Aileron) .................................................15
Section 4: Servo Installation (Fuselage) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Section 5: Window Installation .......................................................24
Section 6: Landing Gear Installation ...................................................25
Section 7: Installing the Stabilizer.....................................................26
Section 8: Wing Installation .........................................................29
Recommended CG ................................................................32
Control Throws ...................................................................32
Preflight ........................................................................33
2006 Official AMA National Model Aircraft Safety Code....................................34
Table of Contents

3
Radio Equipment
• 4-channel radio system (minimum)
• 4 standard servos
(one elevator, one rudder, two aileron)
• Receiver
• Receiver battery
• Switch harness
• 12" Servo Extension (JRPA098) (2)
• “Y” Harness (JRPA135)
• Large Arms/Horns w/Screw (JRPA212)
Battery, Speed Control and Motor Accessories
• Phoenix-60A Speed Control: Brushless (CSEPHX60)
• 4200mAh 4S2P 14.8V Li-Po, 13GA
(THP42004S2PPL)
• Connectors for speed control and battery
• Propeller
• Charger
Recommended JR®or JR SPORT™Systems
• XP9303
• XP7202
• XP6102
• XS600
Recommended Spektrum®System
• DX7
Large Parts:
A. Fuselage HAN4351
B. Wing HAN4001
C. Cowling HAN4353
D. Tail Set HAN4003
E. Landing Gear HAN4005
F. Wing Strut Set HAN4010
G. Window Set HAN4008
Items Not Shown:
Battery Door HAN4352
Tail Wheel Assembly HAN4007
Decal Set HAN4009
Pushrod Set HAN4011
Wheels HAN4006
Top Fuselage Hatch HAN4012
JR XP6102
JR XP9303
Spektrum DX7
Contents of Kit
Additional Required Equipment
A
B
D
E
C
G
F

4
Tools
• Adjustable wrench
• Crimping tool
• Drill
• Drill bit: 1/16", 5/64", 3/32"
• Felt-tipped pen
• Heat gun
• Hobby knife
• Hobby scissors
• Petroleum jelly
• Phillips screwdriver (small)
• Phillips screwdriver (large)
• Pliers
• Rotary tool w/sanding drum
• Ruler
• Sandpaper
• Soldering iron
• Solder
• String
• Threadlock (PAAPT42)
• T-pins
Adhesives
• 30-minute Epoxy (HAN8002)
• Thin CA (PAAPT08)
• Medium CA (PAAPT02)
• Canopy Glue (PAAPT56)
Other Required Items
• Epoxy brushes
• Felt-tipped pen or pencil
• Measuring device (e.g. ruler, tape measure)
• Mixing sticks for epoxy
• Paper towels
• Petroleum jelly
• Rubbing alcohol
• Sanding bar
• Covering Iron (HAN101)
• Covering Glove (HAN150)
• Sealing Iron Sock (HAN141)
• Cub Yellow HANU884
• Black HANU874
Additional Required Tools and Adhesives
Covering Colors

5
Warranty Period
Exclusive Warranty- Horizon Hobby, Inc., (Horizon) warranties that the Products purchased (the "Product") will be free
from defects in materials and workmanship at the date of purchase by the Purchaser.
Limited Warranty
(a) This warranty is limited to the original Purchaser ("Purchaser") and is not transferable. REPAIR OR REPLACEMENT
AS PROVIDED UNDER THIS WARRANTY IS THE EXCLUSIVE REMEDY OF THE PURCHASER. This warranty covers only
those Products purchased from an authorized Horizon dealer. Third party transactions are not covered by this warranty.
Proof of purchase is required for warranty claims. Further, Horizon reserves the right to change or modify this warranty
without notice and disclaims all other warranties, express or implied.
(b) Limitations- HORIZON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, ABOUT NON-
INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF THE PRODUCT. THE
PURCHASER ACKNOWLEDGES THAT THEY ALONE HAVE DETERMINED THAT THE PRODUCT WILL SUITABLY MEET
THE REQUIREMENTS OF THE PURCHASER’S INTENDED USE.
(c) Purchaser Remedy- Horizon's sole obligation hereunder shall be that Horizon will, at its option, (i) repair or (ii)
replace, any Product determined by Horizon to be defective. In the event of a defect, these are the Purchaser's exclusive
remedies. Horizon reserves the right to inspect any and all equipment involved in a warranty claim. Repair or replacement
decisions are at the sole discretion of Horizon. This warranty does not cover cosmetic damage or damage due to acts of
God, accident, misuse, abuse, negligence, commercial use, or modification of or to any part of the Product. This warranty
does not cover damage due to improper installation, operation, maintenance, or attempted repair by anyone other than
Horizon. Return of any goods by Purchaser must be approved in writing by Horizon before shipment.
Damage Limits
HORIZON SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR
PRODUCTION OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCT, WHETHER SUCH CLAIM
IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT LIABILITY. Further, in no event shall the liability of
Horizon exceed the individual price of the Product on which liability is asserted. As Horizon has no control over use,
setup, final assembly, modification or misuse, no liability shall be assumed nor accepted for any resulting damage or
injury. By the act of use, setup or assembly, the user accepts all resulting liability.
If you as the Purchaser or user are not prepared to accept the liability associated with the use of this Product, you are
advised to return this Product immediately in new and unused condition to the place of purchase.
Law: These Terms are governed by Illinois law (without regard to conflict of law principals).
Safety Precautions
This is a sophisticated hobby Product and not a toy. It must be operated with caution and common sense and requires
some basic mechanical ability. Failure to operate this Product in a safe and responsible manner could result in injury
or damage to the Product or other property. This Product is not intended for use by children without direct adult
supervision. The Product manual contains instructions for safety, operation and maintenance. It is essential to read
and follow all the instructions and warnings in the manual, prior to assembly, setup or use, in order to operate correctly
and avoid damage or injury.

6
Questions, Assistance, and Repairs
Your local hobby store and/or place of purchase cannot provide warranty support or repair. Once assembly, setup or
use of the Product has been started, you must contact Horizon directly. This will enable Horizon to better answer your
questions and service you in the event that you may need any assistance. For questions or assistance, please direct your
email to [e-mail], or call 877.504.0233 toll free to speak to a service technician.
Inspection or Repairs
If this Product needs to be inspected or repaired, please call for a Return Merchandise Authorization (RMA). Pack
the Product securely using a shipping carton. Please note that original boxes may be included, but are not designed
to withstand the rigors of shipping without additional protection. Ship via a carrier that provides tracking and insurance
for lost or damaged parcels, as Horizon is not responsible for merchandise until it arrives and is accepted
at our facility. A Service Repair Request is available at www.horizonhobby.com on the “Support” tab. If you do not
have internet access, please include a letter with your complete name, street address, email address and phone number
where you can be reached during business days, your RMA number, a list of the included items, method of payment
for any non-warranty expenses and a brief summary of the problem. Your original sales receipt must also be included
for warranty consideration. Be sure your name, address, and RMA number are clearly written on the outside of the
shipping carton.
Warranty Inspection and Repairs
To receive warranty service, you must include your original sales receipt verifying the proof-of-purchase
date. Provided warranty conditions have been met, your Product will be repaired or replaced free of charge. Repair or
replacement decisions are at the sole discretion of Horizon Hobby.
Non-Warranty Repairs
Should your repair not be covered by warranty the repair will be completed and payment will be
required without notification or estimate of the expense unless the expense exceeds 50% of the retail
purchase cost. By submitting the item for repair you are agreeing to payment of the repair without notification. Repair
estimates are available upon request. You must include this request with your repair. Non-warranty repair estimates will
be billed a minimum of ½ hour of labor. In addition you will be billed for return freight. Please advise us of your preferred
method of payment. Horizon accepts money orders and cashiers checks, as well as Visa, MasterCard, American Express,
and Discover cards. If you choose to pay by credit card, please include your credit card number and expiration date. Any
repair left unpaid or unclaimed after 90 days will be considered abandoned and will be disposed of accordingly. Please
note: non-warranty repair is only available on electronics and model engines.
Electronics and engines requiring inspection or repair should be shipped to the following address:
Horizon Service Center
4105 Fieldstone Road
Champaign, Illinois 61822
All other Products requiring warranty inspection or repair should be shipped to the following address:
Horizon Product Support
4105 Fieldstone Road
Champaign, Illinois 61822
Please call 877-504-0233 with any questions or concerns regarding this product or warranty.

7
Safety, Precautions, and Warnings
This model is controlled by a radio signal that is subject to interference from many sources outside your control. This
interference can cause momentary loss of control so it is advisable to always keep a safe distance in all directions around
your model, as this margin will help to avoid collisions or injury.
• Always operate your model in an open area away from cars, traffic, or people.
• Avoid operating your model in the street where injury or damage can occur.
• Never operate the model into the street or populated areas for any reason.
• Never operate your model with low transmitter batteries.
• Carefully follow the directions and warnings for this and any optional support equipment (chargers, rechargeable
battery packs, etc.) that you use.
• Keep all chemicals, small parts and anything electrical out of the reach of children.
• Moisture causes damage to electronics. Avoid water exposure to all equipment not specifically designed and protected
for this purpose.
Before Starting Assembly
Before beginning the assembly of the Piper Cub 40, remove each part from its bag for inspection. Closely inspect
the fuselage, wing panels, rudder, and stabilizer for damage. If you find any damaged or missing parts, contact the
place of purchase.
If you find any wrinkles in the covering, use a heat gun or sealing iron to remove them. Use caution while working around
areas where the colors overlap to prevent separating the colors.
Using the Manual
This manual is divided into sections to help make assembly easier to understand, and to provide breaks between each
major section. In addition, check boxes have been placed next to each step to keep track of each step completed. Steps
with a single box () are performed once, while steps with two boxes () indicate that the step will require
repeating, such as for a right or left wing panel, two servos, etc. Remember to take your time and follow the directions.
HAN100 – Heat Gun
HAN150 – Covering Glove
HAN101 – Sealing Iron
HAN141 – Sealing Iron
Sock

8
Required Parts
• Stabilizer • Elevator
• Fuselage • Rudder
• Wing • Aileron (R&L)
• Tail gear wire • Hinge (17)
Required Tools and Adhesives
• Thin CA • T-pins
• 30-minute epoxy • Petroleum jelly
• Drill • Drill bit: 1/16", 3/32"
• Hobby knife
Step 1
Locate three hinges. Place a T-pin in the center of
each hinge.
Step 2
Drill a 1/16" hole in both a stabilizer and elevator half in
the center of the hinge locations.
Step 3
Place the hinges in the stabilizer.
Step 4
Slide the elevator and stabilizer together. Remove the
T-pins. There should be a 1/64" gap between the
stabilizer and elevator.
Step 5
Check that the tips of the stabilizer and elevator are
aligned. Wick thin CA into each of the hinges.
Note: Do not use accelerator in the hinging
process. The CA must be allowed to soak into
the hinge naturally.
Section 1: Hinge Installation

9
Step 6
After the CA has cured, flex the surfaces several times to
break in the hinges.
Step 7
Pull on both surfaces to make sure the hinges are secure.
Step 8
Repeat Steps 1 through 7 for the aileron hinges. Each
aileron will use four hinges. Center the ailerons and make
sure they are not binding before gluing the hinges.
Step 9
Coat the tail gear wire near the bushing with petroleum
jelly. Work the lubricant into the bearing to prevent epoxy
from entering the bearing, gluing the bearing to the wire.
Hint: Use a heat gun to warm the petroleum
jelly to allow it to flow into the bushing.
Step 10
Drill a 3/32" hole in the rudder 1 1/4" from the bottom.
Section 1: Hinge Installation

10
Step 11
Cut a groove from the hole to the bottom of the rudder to
allow clearance for the tail gear bearing.
Step 12
Apply a thin layer of lubricant where the bearing will
ride in the rudder. Use 30-minute epoxy to glue the wire
into the rudder.
Step 13
Cut a slot in the end of the fuselage to accept the tail
gear bearing.
Step 14
Install three hinges into the rudder. Test fit the rudder
to the fuselage, sliding the hinges and tail wheel bracket
into position.
Step 15
Use 30-minute epoxy to glue the tail gear bearing into the
fuselage. Use thin CA for the hinges.
Section 1: Hinge Installation

11
Required Parts
• Fuselage • Propeller
• Propeller adapter • Cowling
• #2 x 3/8" sheet metal screw (4)
Required Tools and Adhesives
• Phillips screwdriver (small)
• Drill • Drill bit: 1/16", 5/64"
• Soldering iron • Solder
• Electronic speed control w/connectors
Note: Use a good quality solder and flux when
soldering electronic components. Check with
an electronic store to purchase the appropriate
components for soldering if you don't have
these on hand.
Important: Always make sure that what is
under your soldering iron is of no great value.
Solder that drips can easily damage a surface.
It is suggested to have an inexpensive piece of
plywood under your soldering area to prevent
damage from dripped solder.
Step 1
Locate the connectors for your motor. Use pliers to hold
the connector. Heat the connector with the soldering iron
and feed a small amount of solder into the connector.
Note: A drop of flux will make the solder
"stick" better than just using the solder alone.
Step 2
Tin the ends of the wires on your speed control by using
the iron to heat the bare wires. It is always a good idea to
apply the iron to one sire of the wire and feed the solder
from the opposite side to draw the solder into the wire.
Step 3
While the wire on the speed control is still warm, heat the
connector with the soldering iron. Slide the wire from the
speed control into the connector and leave it for a second
to make sure the solder has fully heated. Remove the
soldering iron and allow the wire/connector to cool before
moving anything. After a minute or two, give the connector
a light pull to make sure it is secure.
Section 2: Motor and Cowling Installation

12
Step 4
Once all the connectors have been installed, use heat
shrink tubing to insulate them. If not insulated, they could
short and damage the speed controller.
Step 5
Repeat Steps 1 through 4 to install a connector onto the
battery lead of the speed control that matches the one on
your battery.
Step 6
Remove the cowling and propeller from the fuselage. Plug
the motor leads from the motor to the speed control.
Step 7
Use double-sided tape or sticky back hook and loop to
secure the speed control inside the fuselage. Make sure it
can't move around, and that the wires going to the motor
are secure and won't interfere with the operation of the
motor.
Step 8
Pass the hook and loop straps through the battery floor as
shown.
Section 2: Motor and Cowling Installation

13
Step 9
Use the hook and loop straps to secure the battery inside
the fuselage.
Note: If you find the battery slides forward or
backward, simply apply a piece of hook and
loop material on the battery floor and battery to
keep the battery in position.
Step 10
Plug the speed control into the throttle channel of the
receiver. Move the throttle trim and stick to low throttle.
Plug the speed control into the battery and check
the operation of the motor. The motor should rotate
counterclockwise when viewed from the front of the
aircraft. If the motor rotates the wrong direction, follow the
instructions provided with your speed control to correct
the rotation direction.
Step 11
Unplug the speed control from the battery and receiver at
this time. Install the battery hatch back onto the fuselage.
Step 12
Replace the cowling back onto the fuselage and tighten the
propeller adapter to secure it to the motor shaft.
Section 2: Motor and Cowling Installation

14
Required Parts
• Wing (L&R) • Servo hatch (L&R)
• #2 x 3/8" screw (8) • Control horn (2)
• 2mm x 20mm screw (6) • Clevis (2)
• Clevis retainer (2)
• 43/4" pushrod wire (2)
• Pushrod wire keeper (2)
Required Tools and Adhesives
• Phillips screwdriver (small) • 30-minute epoxy
• Felt-tipped pen • String
• Drill • Drill bit: 1/16", 3/32"
• Pliers • “Y” harness
• 12" servo extension (2) • Hobby knife
• Long Servo Arm (JRPA212) (2)
Step 1
Remove the covering from the servo opening in the
bottom of the wing using a hobby knife. Select the correct
servo hatch by checking the alignment for the servo arm
on the plate with the one on the wing.
Step 2
Install the recommended servo hardware (grommets and
eyelets) supplied with the servo. Temporarily install a long
half servo arm (JRPA212) onto the servo and position
the servo onto the hatch so the servo arm is centered in
the notch. Once satisfied, mark the location for the servo
mounting blocks using a felt-tipped pen.
Step 3
Locate the 3/8" x 3/4" x 3/4" servo mounting blocks.
Use 30-minute epoxy to glue the blocks to the hatch. Let
the epoxy fully cure before proceeding to the next step.
Section 3: Servo Installation (Aileron)

15
Step 4
Place the aileron servo between the mounting blocks and
use a felt-tipped pen to mark the location of the four servo
mounting screws. Note that the servo must not touch the
hatch in order to isolate engine vibration.
Note: Before mounting the servo,
electronically center the servo using the
transmitter, then install the servo arm to
avoid having to remove the servo and center
the arm later. It may be necessary to slightly
trim one of the servo mounting blocks to clear
the servo wire.
Step 5
Remove the servo and use a 1/16" drill bit to pre-drill
the holes for the servo mounting screws marked in the
previous step. Use the screws supplied with the servo to
mount it to the servo mounting blocks.
Step 6
Connect a 12" Servo Lead Extension (JRPA098) to the
servo lead. Secure the connectors by tying them in
a knot using dental floss or by using a commercially
available connector clamp to prevent the servo leads from
becoming disconnected.
Note: It is always a good idea to secure
the servo connector and servo extension
together to prevent the wires from
becoming unplugged.
Section 3: Servo Installation (Aileron)

16
Step 7
Tie a wheel collar onto a piece of string. Drop the wheel
collar into the wing from the root and retrieve it from the
servo opening.
Step 8
Tie the string onto the servo extension. Gently pull the
extension through the wing using the string. Untie the
string when the servo lead has been pulled through. Use
tape to secure the servo lead to the wing to prevent it from
falling back into the wing panel.
Step 9
Secure the hatch using four #2 x 3/8" screws.
Section 3: Servo Installation (Aileron)

17
Step 10
Place a clevis retainer onto a clevis. Thread the clevis
onto a 4 3/4" pushrod wire. Remove the backplate
from a control horn, and then attach the clevis to the
control horn.
Step 11
Position the control horn on the aileron. Use the
pushrod wire as a guide to align the horn to the servo
arm. Position the horn so the holes align with the hinge
line. Use a felt-tipped pen to mark the positions for the
three mounting bolts.
Align holes with hinge line
Step 12
Drill the locations marked in the previous step using
a 3/32" drill bit.
Step 13
Place a few drops of thin CA into each of the holes to
harden the balsa. Attach the control horn using three
2mm x 20mm screws and the control horn backplate.
Section 3: Servo Installation (Aileron)

18
Step 14
Plug in the aileron servo to the radio system. Center the
trims on the transmitter to center the aileron servo. Hold
the aileron in neutral. Use a felt-tipped pen to mark the
pushrod wire where it crosses the servo arm.
Step 15
Bend the pushrod wire at the mark. Use a pushrod wire
keeper to secure the pushrod wire to the servo arm.
Step 16
Repeat Steps 1 though 15 for the remaining wing panel.
Section 3: Servo Installation (Aileron)

19
Required Parts
• Fuselage • Clevis
• Clevis retainer • Control horn
• Wing strut mount (2) • #4 x 3/8" screw (4)
• 193/4" pushrod dowel • 6" pushrod wire
• Pushrod wire (32”)
• 21/8" heat shrink tubing (2)
• 2mm x 12mm screw (3)
• 71/4" pushrod wire (2)
Required Tools and Adhesives
• Phillips screwdriver • Hobby knife
• Drill • Drill bit: 3/32", 5/64"
• Heat gun • Medium CA
• Thin CA • Felt-tipped pen
Step 1
Remove the covering for the wing strut mount. The
opening is located above the rear landing gear mount.
Step 2
Slide the wing strut mount into the opening. Secure the
mount using two #4 x 3/8" screws.
Step 3
Install the recommended servo hardware (grommets and
eyelets) supplied with the servos into the throttle, rudder,
and elevator servos.
Step 4
Use the hardware provided with the servos to mount them
in the fuselage.
Section 4: Servo Installation (Fuselage)

20
Step 5
Place a clevis retainer onto a clevis. Thread the clevis
onto a 32" pushrod wire. Remove the backplate from a
control horn, and then attach the clevis to the control
horn. Slide the pushrod into the rudder pushrod tube in
the fuselage. Position the horn so the holes align with the
hinge line. Use a felt-tipped pen to mark the positions for
the three mounting bolts.
Align holes with hinge line
Step 6
Drill the locations marked in the previous step using
a 3/32" drill bit. Place a few drops of thin CA into
each of the holes to harden the balsa. Attach the control
horn using three 2mm x 12mm screws and the control
horn backplate.
Step 7
Plug in the rudder servo to the radio system. Center the
trims on the transmitter to center the rudder servo. Hold
the rudder in neutral. Use a felt-tipped pen to mark the
pushrod wire where it crosses the servo arm.
Section 4: Servo Installation (Fuselage)