Hangar 9 Alpha 40 User Manual

Alpha 40 ARF

Assembly Manual

Specications

Wingspan: ................................................... 63 in (1600mm)

Length: ..................................................... 52.5 in (1334mm)

Wing Area: ....................................... 710 sq in (45.8 sq dm)

Weight: ............................................ 5–5.5 lb (2.27–2.49 kg)

Radio: ..................................................4-channel minimum

Engine: ................. .40–.46 2-stroke (glow), Power 25 (EP)

Table of Contents

Notice

Product Support

Product Support ....................................................................2

Specifications .........................................................................2

Included Parts Listing ............................................................3

Contents of Kit and Parts Layout ...........................................4

Safety Precautions and Warnings ..........................................4

Important InformationRegarding Warranty ............................5

Using the Manual ...................................................................5

EasyCote™ Covering Colors ...................................................5

Before Starting Assembly ......................................................5

Radio Systems Requirements ................................................5

Recommended Setup - Glow .................................................5

Recommended Setup - Power 25 ..........................................5

Field Equipment Required ......................................................5

Optional Field Equipment .......................................................5

Tools and Supplies .................................................................5

Additional Required Adhesives ..............................................6

Servo Installation-Fuselage ....................................................6

Glow Engine Installation ........................................................7

Fuel Tank Installation ...........................................................10

Muffler Installation ...............................................................12

Propeller and Spinner - Glow Engine Installation ................12

Electric Motor Installation ....................................................13

Propeller and Spinner Installation-Electric Motor ................18

Landing Gear Installation .....................................................20

Receiver Installation-Electric Motor Option .........................23

Receiver Installation-Glow Engine Option ............................23

Wing Dowel Installation .......................................................26

Fin and Stabilizer Installation ...............................................27

Throttle Linkage Connection ................................................29

Elevator Linkage Installation ................................................31

Rudder and Steering Linkage Installation ............................34

Aileron Servo Installation .....................................................38

Wing Assembly ....................................................................40

Optional: Gluing the Wing Halves ........................................42

Wing Installation ..................................................................44

Checking the Control Surface Movement.............................45

Checking the Throttle Operation ..........................................46

Balancing Your Alpha ARF ...................................................47

Control Throws ....................................................................48

Maintaining Your Model .......................................................48

Flight Preparations ...............................................................49

Safety Do’s and Don’ts for Pilots .........................................49

Daily Flight Checks ...............................................................49

Glossary of Terms ................................................................49

Safety, Precautions and Warnings .......................................50

Warranty and Repair Policy .................................................50

2010 Official Academy of Model Aeronautics Safety Code ..52

All instructions, warranties and other collateral documents
are subject to change at the sole discretion of Horizon
Hobby, Inc. For up-to-date product literature, visit http://
www.horizonhobby.com and click on the support tab for this
product.

Meaning of Special Language

The following terms are used throughout the product
literature to indicate various levels of potential harm when
operating this product:

NOTICE: Procedures, which if not properly followed, create
a possibility of physical property damage AND a little or no
possibility of injury.

CAUTION: Procedures, which if not properly followed, create
the probability of physical property damage AND a possibility
of serious injury.

WARNING: Procedures, which if not properly followed,
create the probability of property damage, collateral damage,
and serious injury OR create a high probability of superficial
injury.

WARNING: Read the ENTIRE instruction manual to
become familiar with the features of the product

before operating. Failure to operate the product
correctly can result in damage to the product, personal
property and cause serious injury.

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.
Do not attempt disassembly, use with incompatible
components or augment product in any way without the
approval of Horizon Hobby, Inc. This 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 serious injury.

For technical assistance with this product, please contact the
appropriate Horizon Product Support office. See page 51.

Specications

Wingspan: ................................................... 63 in (1600mm)

Length: ..................................................... 52.5 in (1334mm)

Wing Area: ....................................... 710 sq in (45.8 sq dm)

Weight: ............................................ 5–5.5 lb (2.27–2.49 kg)

Radio: ..................................................4-channel minimum

Engine: ................. .40–.46 2-stroke (glow), Power 25 (EP)

2 Hangar 9 Alpha 40 ARF Assembly Manual

Included Parts Listing

BAGGED SEPARATELY

Fuselage with hatch (1)
Right wing panel with aileron (1)
Left wing panel with aileron (1)
Vertical fin (1)
Horizontal stabilizer (1)
Aluminum wing tube, 12mm x 318mm (1)

FUSELAGE

9 oz (260cc) fuel tank (assembled) (1)
#4 x 5/8-inch wood screw (1) Tank support tray
3mm x 12mm socket head cap screw (2) Fuselage lower hatch
#4 flat washer (2) Fuselage lower hatch
EZ connector with setscrew (1) Nose gear
#2 flat washer (2) EZ connector spacers
C-Clip (2) Secures EZ connector

3

4

/4 x 1/4-inch dowel rod (2) Wing to fuselage
Rubber band (10) Wing to fuselage
Plywood tank support tray (1) Secures tank in position
Plywood EP battery tray (2) Holds EP battery
Silicone safety clear tubing (2) Clevis keepers
Nylon clevis (1) Throttle
Snap link (1) Throttle

MOTOR MOUNT

8-32 x 3/4-inch socket head cap screw (4) EP motor to EP standoffs
8-32 x 1-inch socket head cap screw (4) Motor mount to firewall/EP

standoffs to firewall

#8 Silver flat washer (4) Motor mount to firewall/EP

standoffs to firewall
4-40 x 1-inch socket head cap screw (4) Engine to motor mount
#4 silver flat washer (4) Engine to motor mount
8-32 blind nut (4) Engine mount
4-40 nylon inserted locknut (4) Engine to motor mount
Black nylon motor mount (2)
45mm EP standoffs (4)
2-inch (50mm) 2-blade spinner, red (1)

WING

Nylon Clevis (2) Ailerons
Snap link (2) Ailerons
Clear wing center tape 1/2 x 14-inch (1) Seal top center wing joint
White covering 3/4 x 14-inch (1) Seal top center wing joint
Red covering 3/4 x 14-inch (1) Seal bottom center wing joint

RUDDER AND ELEVATOR

3mm x 10mm socket head cap screw (2) Stabilizer to fuselage
#4 silver flat washer (2) Stabilizer to fuselage
#4 silver flat washer (2) Rudder to stabilizer
3mm wing nut (2) Stabilizer to vertical fin
Nylon clevis (2) Rudder and elevator
Snap link (2) Rudder and elevator

LANDING GEAR

Main landing gear assembly (2) Includes 2

1

/2-inch (65mm) wheel

and 4mm wheel collars

Nose gear assembly (1) Includes with 2

1

/2-inch (65mm)

wheel and 4mm wheel collars
#4 x 3/8-inch wood screw (4) Landing gear to fuselage
Landing gear straps (2) Landing gear to fuselage
Nose gear control arm with setscrew (1)

PUSHRODS

3

3

/8 x 1/4-inch hardwood support pieces (2) Fuel tank support
2-56 x 6
2-56 x 16
2-56 x 16

1

/8-inch one end threaded pushrod (2) Ailerons

3

/4-inch pushrod with Z-bend (1) Nose gear

1

/4-inch one end threaded pushrod (1) Throttle

2-56 x 28-inch one end threaded pushrod (2) Elevator and rudder

3Hangar 9 Alpha 40 ARF Assembly Manual

Safety Precautions and Warnings

Read and follow all instructions and safety precautions

10

2

5

3

1

5

7

9

5

before use. Improper use can result in fire, serious injury
and damage to property.

COMPONENTS

Use only with compatible components. Should any
compatibility questions exist please refer to the product
instructions, the component instructions or contact Horizon
Hobby, Inc.

FLIGHT

Fly only in open areas to ensure safety. It is recommended
flying be done at AMA (Academy of Model Aeronautics)
approved flying sites. Consult local ordinances before
choosing a location to fly.

PROPELLER

2

4

6

9

8

Keep loose items that can get entangled in the propeller
away from the prop, including loose clothing, or other
objects such as pencils and screwdrivers. Especially keep
your hands away from the propeller as injury can occur.

Contents of Kit and Parts Layout

BATTERIES

Notes on Lithium Polymer Batteries

Large Replacement Parts

1. HAN246001 Fuselage with Hatch

2. HAN246002 Wing Set with Wing Tube

3. HAN246003 Tail Set

4. HAN246004 Wing Tube

5. HAN246005 Landing Gear Set with Wheels

Small Replacement Parts (not shown)

HAN246008 EP 45mm Standoffs
HAN246010 Pushrods
HAN246011 Hardware Package
HAN246012 Nylon Parts Package
HAN246014 Tail Set Wing Nuts

When used improperly, Lithium Polymer batteries are
significantly more volatile than alkaline or Ni-Cd/Ni-MH
batteries used in RC applications. Always follow the
manufacturer’s instructions when using and disposing of any
batteries. Mishandling of Li-Po batteries can result in fire and
explosion causing serious injury and damage.

6. HAN246006 Engine Nylon Mount

7. HAN246007 Fuel Tank 9 oz

8. HAN246009 Red 2-inch 2-blade Spinner

9. HAN246013 Small Wood Parts

10. HAN246015 Decals

SMALL PARTS

This kit includes small parts and should not be left
unattended near children as choking and serious injury could
result.

Safe Operating Recommendations

• Inspect your model before every flight to make certain it is

airworthy.

• Be aware of any other radio frequency user who may

present an interference problem.

• Always be courteous and respectful of other users of your

selected flight area.

• Choose an area clear of obstacles and large enough to

safely accommodate your flying activity.

4 Hangar 9 Alpha 40 ARF Assembly Manual

• Make certain this area is clear of friends and spectators

prior to launching your aircraft.

• Be aware of other activities in the vicinity of your flight path

that could cause potential conflict.

• Carefully plan your flight path prior to launch.

• Abide by any and all established AMA National Model

Aircraft Safety Code.

Important Information

Regarding Warranty

Please read our Warranty and Liability Limitations section on
page 50 before building this product. 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.

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 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.

EasyCote™ Covering Colors

• Midnight Blue HANU70500

• White HANU7000

• True Red HANU70100

Before Starting Assembly

Before beginning the assembly of your model, 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
covering iron to remove them. Use caution while working
around areas where the colors overlap to prevent separating
the colors.

HAN100 – Heat Gun

HAN150 – Covering Glove

HAN101 – Sealing Iron

HAN141 – Sealing Iron Sock

Radio Systems Requirements

Spektrum™ Radio System (recommended)

• DX6i 6-channel radio or greater with receiver

(SPM6600)

• DS821 Digital Sport Servo (4) (JRPS821)

• 6-inch Servo Extension (JSP98110)

• Receiver Battery, 2300mAh (JRPB5006)

®

• JR

Switch, Chargeswitch (JRPA004)

Recommended Setup - Glow

• Evolution® Trainer Power System: A (EVOE100)

or

• Evolution .46NX with Muffler (EVOE0461)

• Evolution Propeller 11 x 5 (EVO11050)

• Evolution Propeller, 3-Blade (EVO100P) (optional)

• 3-Blade Spinner, White (EVOE100S) (optional)

• Exhaust Diverter (DUB697) (optional)

Recommended Setup - Power 25

• Power 25 Brushless Outrunner Motor,
870Kv (EFLM4025A)

• 11 x 8e Electric Propeller (APC11080E)

• 60-Amp Lite Switch-Mode BEC Brushless (EFLA1060)

• 3200mAh 4S 14.8V 20C Li-Po,

13AWG EC3 (EFLB32004S)

Field Equipment Required

• Fuel (15% recommended)

• Propeller

• Long Reach Glow Plug Wrench (HAN2510)

• Metered Glow Driver with Ni-Cd & Charger (HAN7101)

• 2-Cycle Sport Plug (EVOGP1)

• Manual Fuel Pump (HAN118)

Optional Field Equipment

• Selfstick Weights, 6 oz (HAN3626)

• PowerPro

• 12V 7Ah Sealed Battery (HAN102)

• Power Panel (HAN106)

• Blue Block After Run Oil (EVOX1001)

• Cleaner and towels

™

12V Starter (HAN161)

Tools and Supplies

Drill Epoxy brush
Felt-tipped pen Hook and loop tape
Hobby knife with #11 blade Low-tack tape
Sandpaper Mixing cup
Mixing stick Paper towel
Phillips screwdriver: #1, #2 Pencil
Pin vise Pliers
Ruler Diagonal cutters
Rubbing alcohol Felt-tipped pen
Threadlock Hook and loop tape
Hook and loop strap
Foam rubber, 1/4-inch (6mm)
Nut driver or box wrench: 1/4-inch
Box wrench to fit propeller nut
Box end or open end wrench: 10mm (2)
Hex wrench or ball driver: 1.5mm, 2.5mm, 3/32-inch,

9/64-inch

Drill bit: 1/16-inch (1.5mm), 5/64-inch (2mm), 1/8-inch

(3mm), 5/32-inch (4mm), 11/64-inch (4.5mm)

5Hangar 9 Alpha 40 ARF Assembly Manual

Additional Required Adhesives

30-Minute Epoxy (HAN8002)
Medium CA (PAAPT02)
Thin CA (PAAPT08)

Servo Installation-Fuselage

Required Parts

Fuselage Servo with hardware (4)
Receiver Receiver battery
Switch harness
6-inch (152mm) servo extension

Required Tools and Adhesives

Phillips screwdriver: #1 Thin CA

 Step 1

Locate the necessary items for your radio system. Plug the
servos and switch harness in the receiver. Plug a battery into
the switch harness. Check that all the servos work properly.

 Step 2

Prepare the servos by installing the rubber grommets and
brass eyelets in the servos. Note that the eyelets are inserted
from the bottom of the servo.

 Step 3

Use a #1 Phillips screwdriver to thread a servo mounting
screw into the holes in the servo tray inside the fuselage.
Apply 2–3 drops of thin CA in the holes to harden the
surrounding wood. This makes the screws more secure and
less likely to vibrate loose.

Note: You may need to bind your radio system if you
are using a 2.4GHz system. Follow the instructions
provided with your radio system to do so.

Note: Make sure to turn off both the transmitter and
receiver before unplugging the servos.

Important: You will need to connect a 6-inch (152mm)
extension in the Aileron port of the receiver to connect
to the servo used for the Ailerons. Leave the extension
plugged into the receiver when unplugging the servos.

6 Hangar 9 Alpha 40 ARF Assembly Manual

 Step 4

Mount the rudder and elevator servos in the fuselage using
the screws provided with the servos. Use a #1 Phillips
screwdriver to tighten the screws. Note the direction of the
servos in the photo.

 Step 5

If you are installing a glow engine, you will need to install the
servo used to control the throttle at this time.

Glow Engine Installation

Required Parts

Fuselage assembly Engine mount rail (2)
#8 washer (4) #4 washer (4)
8-32 blind nut (4) 4-40 locknut (4)
Safety tubing Clevis
2-56 x 16
4-40 x 1-inch socket head screw (4)
8-32 x 1-inch socket head screw (4)

Required Tools and Adhesives

Nut driver: 1/4-inch Threadlock
Hex wrench or ball driver: 3/32-inch, 9/64-inch

1

/4-inch throttle pushrod

 Step 1

Locate the necessary hardware to install the engine on
your model.

 Step 2

Slide a #8 washer on an 8-32 x 1-inch socket head screw.
Slide the screw into the engine mount rail as shown. You will
be using four screws, four washers and two engine mount
rails in this step to prepare the right and left engine mount
rails. Place a drop of threadlock on the threads of each bolt.
Threadlock will prevent the bolts from vibrating loose in flight.

7Hangar 9 Alpha 40 ARF Assembly Manual

 Step 3

Position an engine mount rail on the fuselage. Thread an
8-32 blind nut on the screw. Note that the prongs on the
blind nut will go into the backside of the firewall to keep
them from rotating. The nuts are not to be tightened at this
time so the mount can be positioned for your engine. The
bolts wil be tightened once the engine has been secured to
the mounting rails.

 Step 4

Place a #4 washer on each of the four 4-40 x 1-inch socket
head bolts. Slide the screws through the holes in the engine
mount flange.

 Step 5

Place the engine on the mounting rails. The screws will go
through the holes in the rails. Thread a 4-40 locknut on each
screw. The nuts are only finger-tight at this time.

8 Hangar 9 Alpha 40 ARF Assembly Manual

 Step 6

Use a 9/64-inch hex wrench or ball driver to tighten the
screws that attach the mount to the firewall. Make sure the
blind nuts are drawn into the back of the firewall. Also make
sure you have placed a small amount of threadlock on each
of the screws so they don’t vibrate loose in flight.

 Step 7

Use a 3/32-inch hex wrench or ball driver and a 1/4-inch
nut driver to tighten the hardware securing the engine to the
engine mounting rails.

 Step 9

Slide the piece cut in the previous step on a nylon clevis.
Thread the clevis 10-turns onto the threaded end of the 2-56

1

x 16

/4-inch throttle pushrod wire.

 Step 10

Slide the pushrod wire into the tube in the firewall that aligns
with the carburetor arm. Connect the clevis to the carburetor
arm and slide the tubing over the forks of the clevis to keep
the clevis from opening accidentally.

 Step 8

Use a hobby knife to cut a 1/4-inch (6mm) piece of tubing
from the 2-inch (52mm) safety tubing.

9Hangar 9 Alpha 40 ARF Assembly Manual

Fuel Tank Installation

Clunk

Vent Line

Top View

Side View

Vent Line (faces top of fuselage)

To Muffler

To Carburetor

Required Parts

Fuselage Fuel tank brace, front
Fuel tank brace, rear 3mm washer (2)
Fuselage hatch Fuel tank (assembled)
3mm x 12mm socket head scew (2)

Required Tools and Adhesives

Threadlock Scissors
Hobby knife with #11 blade Phillips screwdriver: #2
Hex wrench or ball driver: 2.5mm

 Step 1

Locate the items necessary to install the fuel tank in the fuselage.

 Step 2

Inspect the fuel tank to determine the internal positioning
of the vent line. This is important as the vent line must face
to the top of the fuselage for the engine to run properly.
You may want to place a piece of tape on the tube that
corresponds to the vent line for easier identification later.

 Step 3

Insert the fuel tank in the fuselage. Guide the fuel lines
through the hole in the firewall.

 Step 4

Guiding the fuel tubes to the top of the fuselage, place the tank
in the fuselage so it rests in the fuselage as shown. The tank
will fit snug against the back of the firewall when installed.

10 Hangar 9 Alpha 40 ARF Assembly Manual

 Step 5

Locate the fuel tank braces. The rectangular piece is the rear
brace, while the shaped one is the front brace.

 Step 7

Use a hobby knife with a #11 blade to expose the two holes
for the fuselage hatch mounting screws.

 Step 9

Slide a #4 washer on a 3mm x 12mm socket head screw.
Place a drop of threadlock on the screw.

 Step 6

Test fit the braces in the fuselage. They will lock into the
sides of the fuselage when installed properly. Once fit, use
medium CA to glue the braces to the fuselage sides.

 Step 8

Slide the fuselage hatch in position on the fuselage. The tabs
will lock the front of the hatch in position.

 Step 10

Use a 2.5mm hex wrench or ball driver to tighten the
screw. Use two screws and washers to secure the hatch
to the fuselage.

11Hangar 9 Alpha 40 ARF Assembly Manual

Muffler Installation

Required Parts

Fuselage Muffler

Required Tools and Adhesives

Hobby knife with #11 blade Hex wrench to fit muffler

 Step 1

Attach the muffler to the engine using the hardware
provided with the engine. Make sure to follow the engine
manufacturer’s instructions where applicable.

Propeller and Spinner - Glow Engine

Installation

Required Parts

Fuselage assembly Spinner assembly
Propeller

Required Tools and Adhesives

Open end or box wrench: 3/8-inch
Phillips screwdriver: #1

 Step 1

Locate the items necessary to install the spinner on your engine.

 Step 3

Slide the propeller onto the engine crankshaft. The blades
of the propeller will be positioned against the bosses for the
spinner screws of the spinner backplate as shown below.

 Step 4

Slide the propeller washer onto the engine crankshaft.

 Step 2

Connect the fuel lines to the carburetor and muffler. The line
from the vent will attach to the muffler, while the line from the
clunk will attach to the carburetor. Use scissors or a hobby
knife and #11 blade to trim the length of the line if necessary
so they don’t interfere with the operation of the engine.

12 Hangar 9 Alpha 40 ARF Assembly Manual

 Step 2

Check that the flywheel is fully installed on the engine. It fits
closely to the engine when positioned correctly. Slide the
spinner backplate onto the engine crankshaft so it is tight
against the flywheel.

 Step 5

Thread the propeller nut onto the engine crankshaft.

 Step 6

Use an adjustable wrench to tighten the propeller nut. Secure
the propeller and spinner backplate onto the engine crankshaft.

 Step 7

Slide the spinner cone over the propeller. It will fit into the
grooves in the spinner backplate when installed.

 Step 8

Use the two 3mm x 10mm sheet metal screws supplied
with the spinner to secure the spinner cone to the spinner
backplate. A #1 Phillips screwdriver will be required to
tighten the screws.

Electric Motor Installation

Required Parts

Fuselage 45mm Motor standoff (4)
#8 washer (4) Battery tray (2)
Fuselage hatch 3mm washer (2)
Motor battery
Electric motor with mount and hardware
Electronic speed control (ESC)
Hook and loop strap (not included)
Hook and loop tape (not included)
3mm x 12mm socket head screw (2)
Motor with mounting hardware
8-32 x 1-inch socket head screw (4)
8-32 x 3/4-inch socket head screw (4)

Required Tools and Adhesives

30-minute epoxy Mixing stick
Threadlock Drill
Open end wrench: 5/16-inch Phillips screwdriver: #1
Drill bit: 11/64-inch (4.5mm)
Hex wrench of ball driver: 9/64-inch, 2.5mm

Important: When tightening the propeller nut, always
use an adjustable wrench, box end wrench or 3/8-inch
drive socket. Using pliers will not allow you to place
enough grip to properly tighten the propeller nut.

Note: Make sure the propeller has not moved from
its position as described back in Step 3. If it has, the
spinner cone will not be able to be installed in the
following steps.

 Step 1

Locate the parts necessary to install the electric motor
on the fuselage.

13Hangar 9 Alpha 40 ARF Assembly Manual

 Step 2

Slide a #8 washer on a 8-32 x 1-inch socket head screw.
Insert the screw through the appropriate hole in the firewall
from the inside of the fuselage.

 Step 3

Prepare three more 8-32 x 1-inch socket head screws and
insert them into the firewall as shown.

 Step 5

Thread a 45mm EP standoff on each of the screws. Use
a 9/64-inch hex wrench or ball driver to tighten the 8-32
socket head screws while holding the standoff with a 5/16­inch open end wrench. Install all four standoffs at this time.

 Step 4

Place a drop of threadlock on each of the screws.

14 Hangar 9 Alpha 40 ARF Assembly Manual

 Step 6

Use a drill and 11/64-inch (4.5mm) drill bit to enlarge the

mounting holes in the X-mount. It is highly recommended
to use a drill press as the X-mount can easily be pulled from

your hand if using a hand drill.

 Step 8

Use four 8-32 x 3/4-inch socket head screws to attach
the motor to the motor standoffs. Remember to use
threadlock on the screws so they don’t vibrate loose. The
wires from the motor will go into the fuselage through the
large hole in the firewall.

 Step 10

Place a piece of hook and loop tape on the bottom of the
speed control. Leave the backing on the mating piece of tape
until instructed to remove.

 Step 7

Apply a drop of threadlock on each of the screws used

to attach the X-mount to the motor. Use a #1 Phillips

screwdriver to secure the mount to the motor.

 Step 9

Prepare the speed control with the necessary connectors
to connect it to your choice of battery and motor. Follow
the instructions provided with the speed control to
complete this step.

 Step 11

Connect the leads from the motor to the speed control. If
you are using E-flite components, the colors will match
from the speed control and motor. If you are using other
components you may need to change the motor wires later
when checking the operation of the motor.

15Hangar 9 Alpha 40 ARF Assembly Manual

 Step 12

Use a hobby knife to remove the covering from the opening
in the side of the fuselage for the speed control switch. Use
the hardware provided with the speed control to mount the
switch in the side of the fuselage.

 Step 13

Position the speed control in the fuselage as shown. It will
be secured once the battery trays have been installed.

 Step 14

Pass a hook and loop strap (not included) through the slots
in the two battery trays as shown.

 Step 15

Insert the first battery tray by angling it in the fuselage as
shown. The tray will then fit into the fuselage where it can be
slid toward the rear of the fuselage.

16 Hangar 9 Alpha 40 ARF Assembly Manual

 Step 16

The second tray goes in the same as the first, but is
positioned to the front of the fuselage.

 Step 17

Once both trays are in the fuselage, use a small amount
of 30-minute epoxy to glue the trays to the sides of the
fuselage. Make sure they are secure so the weight of the
battery does not cause them to come loose.

 Step 18

The next step is to remove the backing from the hook and loop
material from the speed control and secure it to the battery
trays. This is tricky and will require patience to accomplish.

 Step 19

Use the hook and loop straps to secure the motor battery
in the fuselage. If the battery slides forward or aft in the
fuselage, use a small piece of hook and loop tape between
the tray and battery to prevent it from doing so.

 Step 20

Use a hobby knife with a #11 blade to expose the two holes
for the fuselage hatch mounting screws.

17Hangar 9 Alpha 40 ARF Assembly Manual

 Step 21

Slide the fuselage hatch in position on the fuselage. The
tabs will lock the front of the hatch in position. Slide a #4
washer on a 3mm x 12mm socket head screw. Place a drop
of threadlock on the screw. Use a 2.5mm hex wrench or ball
driver to tighten the screw. Use two screws and washers to
secure the hatch to the fuselage.

 Step 22

On the bottom of the fuselage, right behind the rear window,
is an area that can be removed to provide cooling air to pass
through the fuselage to cool the motor battery. Removing
this covering is only necessary if you are not using the
newer Li-Po batteries capable of a 25C discharge rate.

Propeller and Spinner Installation-

Electric Motor

Required Parts

Fuselage assembly Spinner assembly
Propeller Propeller adapter

Required Tools and Adhesives

Phillips screwdriver: #1
Hex wrench or ball driver: 3/32-inch (2mm)

 Step 1

Locate the items necessary to install the propeller and
spinner on the motor.

 Step 2

Slide the propeller adapter on the motor as shown.

18 Hangar 9 Alpha 40 ARF Assembly Manual

 Step 3

Slide the spinner backplate onto the engine crankshaft so it
is tight against the flywheel.

 Step 4

Slide the propeller onto the engine crankshaft. The blades
of the propeller will be positioned against the bosses for the
spinner screws of the spinner backplate as shown below.

 Step 5

Thread the propeller nut onto the engine crankshaft.

 Step 6

Use a 3/32-inch or 2.5mm hex wrench or ball driver to
tighten the adapter nut to secure the propeller and spinner
backplate onto the propeller adapter.

 Step 7

Slide the spinner cone over the propeller. It will fit into the
grooves in the spinner backplate when installed.

 Step 8

Use the two 3mm x 10mm sheet metal screws supplied
with the spinner to secure the spinner cone to the spinner
backplate. A #1 Phillips screwdriver will be required to
tighten the screws.

Note: Make sure the propeller has not moved from
its position as described back in Step 4. If it has, the
spinner cone will not be able to be installed in the
following steps.

19Hangar 9 Alpha 40 ARF Assembly Manual

Landing Gear Installation

Required Parts

Fuselage Main landing gear (2)
Nose gear Steering arm
#4 x 3/8-inch wood screw (4) Landing gear strap (2)
2-56 x 16

Required Tools and Adhesives

Felt-tipped pen Drill
Drill bit: 5/64-inch (2mm) Phillips screwdriver: #2
Hobby knife with #11 blade Thin CA
Threadlock Medium CA
Alcohol Paper towel
Hex wrench or ball driver: 1.5mm

Note: The landing gear installation is identical if you are
using a glow engine or electric motor.

3

/4-inch steering pushrod

 Step 1

Locate the items necessary to install the nose gear and main
landing gear on your aircraft.

 Step 2

Connect the steering arm to the 2-56 x 16
pushrod. Note the position of the steering arm and setscrew
hole in the arm in relationship to how the pushrod is
located. If the pushrod is on the opposite side it will bind the
steering/rudder servo during operation.

3

/4-inch steering

 Step 3

Slide the pushrod into the pushrod tube in the fuselage.
Position the steering arm between the block on the firewall
as shown. Make sure the hole for the setscrew faces forward
so it can be accessed.

 Step 4

Inspect the nose gear assembly. There is a small notch in
the wire that will align with the hole for the setscrew in the
steering arm.

20 Hangar 9 Alpha 40 ARF Assembly Manual

 Step 5

Slide the nose gear assembly into the nose gear blocks and
steering arm. Note the direction of the coil spring and that it
faces to the back of the fuselage.

 Step 6

Apply a drop of threadlock on the 3mm x 3mm setscrew.
Use the setscrew to secure the steering arm to the nose gear
assembly. The setscrew must be tightened on the notch of
the nose gear wire or it might vibrate loose during flight or
cause the nose gear to twist if the model encounters a poor
landing. Use a 1.5mm hex wrench or ball driver to tighten
the setscrew.

 Step 8

Apply a thin coat of medium CA to the slot to seal the
exposed wood. This will keep fuel from soaking into the
wood and causing it to soften over time. Use a paper towel
to wipe away any excess CA. This is not necessary if you are
using an electric power system.

 Step 7

Use a hobby knife to remove the covering to expose the
slot on the bottom of the fuselage for the main landing gear
wires. The main gear slot is located 51/2-inches (140mm)
behind the rear edge of the fuselage hatch.

 Step 9

Use a hobby knife and #11 blade to bevel the inside edge
of both holes in the main landing gear block. This is
necessary to accept the radius of the bend on the main gear
assemblies, allowing them to fit snug in the slot.

21Hangar 9 Alpha 40 ARF Assembly Manual

 Step 10

Measure in 7/8-inch (23mm) from each side of the fuselage
and use a felt-tipped pen to draw a line as shown.

 Step 12

Use a drill and 5/64-inch (2mm) drill bit to drill the four holes in
the bottom of the fuselage for the landing gear strap screws.

 Step 14

Fit the gear to the fuselage. They must fit flush with the
bottom of the fuselage as shown. If not, it may be necessary
to enlarge the bevel made back in Step 9.

 Step 11

Position the landing gear strap on the line and center it over the
slot in the fuselage. Use a felt-tipped pen to mark the locations
for the two mounting screws for each landing gear strap.

 Step 13

Apply 2–3 drops of thin CA in each hole to harden the
surrounding wood. This will make the screws more secure
and help prevent them from vibrating loose in flight.

Hint: At this time you can remove the lines from the
bottom of the fuselage using rubbing alcohol and a
paper towel.

 Step 15

Secure the main landing gear assemblies using the two
landing gear straps and four #4 x 3/8-inch wood screws. Use
a #2 Phillips screwdriver to tighten the screws.

22 Hangar 9 Alpha 40 ARF Assembly Manual

Receiver Installation-

Electric Motor Option

Required Parts

Fuselage Receiver

Required Tools and Adhesives

Hook and loop tape

 Step 1

Plug the rudder, elevator and throttle servos into the appropriate
ports of the receiver. The 6-inch (152mm) extension should still
be plugged in the aileron port of the receiver.

 Step 3

The remote receiver is then mounted to the side of the
fuselage above the elevator servo using hook and loop tape.
Mount it as high as possible in the fuselage for the best
reception from your radio system.

Receiver Installation-

Glow Engine Option

Required Parts

Fuselage Radio tray
#4 x 5/8-inch wood screw Receiver battery
Switch harness Receiver
1/4-inch (6mm) foam (not included)

Required Tools and Adhesives

Phillips screwdriver: #1 Hook and loop tape
Drill bit: 3/32-inch (2.5mm) Drill
Pencil Thin CA
Hobby knife with #11 blade Scissors

 Step 1

Locate the hardware necessary to install the radio tray
in the fuselage.

 Step 2

Mount the receiver to the bottom of the fuselage using hook
and loop tape.

23Hangar 9 Alpha 40 ARF Assembly Manual

 Step 2

Slide the radio tray into the notches in the former. The tray will
fit against the rear of the fuel tank to keep it from moving.

 Step 3

Use a pencil to mark the support block in the fuselage for the
radio tray screw.

 Step 5

Place 2–3 drops of thin CA in the hole. This will harden the
surrounding wood, making the screw less likely to vibrate loose.

 Step 4

Remove the radio tray from the fuselage. Use a drill and
3/32-inch (2.5mm) drill bit to drill a hole in the support block
for the screw that will secure the position of the radio tray.

 Step 6

Use a hobby knife with a #11 blade to remove the covering
and expose the mounting location for the radio switch.

24 Hangar 9 Alpha 40 ARF Assembly Manual

 Step 7

Mount the switch to the side of the fuselage using the
hardware included with the switch. Use a #1 Phillips
screwdriver to tighten the screws for the switch.

 Step 8

Use scissors to cut a piece of 1/4-inch (6mm) foam. Place
the foam in the bottom of the radio compartment.

 Step 9

Plug the throttle, rudder and elevator servos into the
appropriate ports of the receiver. Also connect the battery
to the switch harness and plug the switch harness in the
battery port of the receiver. The 6-inch (152mm) servo
extension should still be plugged into the aileron port of the
receiver. If not, reconnect it at this time.

 Step 10

Place the receiver and receiver battery in the fuselage. Use
scissors to cut small pieces of 1/4-inch (6mm) foam to
isolate the receiver and battery from each other, as well as
from the fuselage sides.

 Step 11

Use scissors to cut a final piece of 1/4-inch (6mm) foam to
cover the receiver and receiver battery.

 Step 12

Slide the radio tray in position. Use a #4 x 5/8-inch wood
screw to secure the tray in position. Use a #1 Phillips
screwdriver to tighten the screw.

25Hangar 9 Alpha 40 ARF Assembly Manual

 Step 13

Use hook and loop tape to secure the remote receiver above
the throttle servo as shown. Mount the receiver as high in the
fuselage and as far away from the main receiver as possible to
provide the best reception from your radio system.

Wing Dowel Installation

Required Parts

Fuselage assembly Wing dowel (2)

 Step 2

Use a hobby knife with a #11 blade to remove the covering
from the fuselage for the wing dowels.

 Step 4

Slide the second wing dowel into the pre-drilled holes in the
rear of the fuselage. Center the dowel so it extends equally
from both sides of the fuselage.

 Step 5

Apply thin CA into the joint between the dowel and fuselage
to keep it from moving.

Required Tools and Adhesives

Thin CA

 Step 1

Locate the wing dowels for your aircraft.

26 Hangar 9 Alpha 40 ARF Assembly Manual

 Step 3

Slide the wing dowel into the pre-drilled holes in the front
of the fuselage. Center the dowel so it extends equally from
both sides of the fuselage.

Fin and Stabilizer Installation

Required Parts

Fin/Rudder assembly #4 washer (4)
Stabilizer/Elevator assembly Wing nut (2)
3mm x 10mm machine screw (2)

Required Tools and Adhesives

Phillips screwdriver: #1 Threadlock
Hobby knife with #11 blade

 Step 1

Locate the fin and stabilizer assemblies and the hardware
necessary to install them on the fuselage.

 Step 3

The threaded rods from the fin will fit into the holes that are
pre-drilled in the stabilizer as shown.

 Step 5

Apply a drop of threadlock onto each of the threaded rods.

 Step 6

Thread the two wing nuts onto the threaded rods to secure
the fin to the stabilizer. Don’t over-tighten the wing nut and
damage the underlying wood.

 Step 2

Use a hobby knife with a #11 blade to remove the covering
from the notch at the front of the stabilizer. Also remove the
covering from the pre-drilled holes in the stabilizer.

 Step 4

Slide the two #4 washers onto the threaded rods from the
bottom of the stabilizer.

27Hangar 9 Alpha 40 ARF Assembly Manual

 Step 7

Use a hobby knife to remove the covering from the slot on
the top of the fuselage for the fin.

 Step 8

Use a hobby knife with a #11 blade to remove the covering on
the bottom of the fuselage for the stabilizer attachment screw.

 Step 9

Slide the fin into position on the fuselage as shown.

o Step 10

Locate a #4 washer and 3mm x 10mm machine screw. Slide
the washer onto the screw, then apply a small amount of
threadlock on the screw.

o Step 11

Insert the screw into the hole in the fuselage and through
the stabilizer to the preinstalled blind nut on the top of the
stabilizer. Use a #2 Phillips screwdriver to tighten the screw.

28 Hangar 9 Alpha 40 ARF Assembly Manual

 Step 12

Repeat Steps 10 and 11 to install the second screw.

Throttle Linkage Connection

Required Parts

Fuselage Pushrod snap link
Transmitter

Required Tools and Adhesives

Pliers Felt-tipped pen
Drill bit: 5/64-inch (2mm) Pin vise
Diagonal cutters

Note: This section covers the installation and
connection of the throttle linkage. If you have installed
an electric power system you can skip this section of
the manual.

 Step 1

Locate the pushrod snap link. This will be used to secure the
pushrod wire to the throttle servo horn.

 Step 2

With the radio system on, move the throttle stick and trim on
the transmitter to the center. Remove the throttle servo horn
from the servo. Rotate the horn so the arm that aligns with
the throttle pushrod measures 1/2-inch (13mm) from the
center of the horn, which aligns with the outer hole of the
servo horn.

 Step 3

Move the throttle stick to the closed throttle position at the
transmitter. Pull the throttle linkage so the carburetor at the
engine is closed. Use a felt-tipped pen to mark the pushrod
wire where it crosses the hole on the servo horn that is 1/2­inch (13mm) from the center of the horn.

 Step 4

Use the radio to move the servo to the open throttle position.
Push the linkage to open the carburetor. The line made in the
previous step should align with the same hole on the servo
horn. If the line is further forward than the servo horn, you
will need to use a longer servo horn or connect the clevis at
the carburetor closer to the center of the carburetor. If the
line does not move far enough you will need to use a shorter
servo horn or connect the clevis at the carburetor to a hole
farther away from the center or the arm. Adjust as necessary
so the servo movement is correct for your engine.

Note: If using a computer radio you can use the travel
volume to adjust for minor differences. It is best to set it as
close mechanically to result in linear travel of the throttle.

29Hangar 9 Alpha 40 ARF Assembly Manual

 Step 5

Once set, use pliers to make a 90-degree bend in the
pushrod wire at the mark made.

 Step 6

Use a pin vise and 5/64-inch (2mm) drill bit to enlarge the
hole in the servo horn that has aligned for use with your
linkage position.

 Step 7

Remove the servo horn from the servo using a #1 Phillips
screwdriver. Use diagonal cutters to remove any unused
arms from the horn so they don’t interfere with the operation
of the servo.

 Step 8

Slide the pushrod wire through the hole in the servo horn.
The horn will fit against the bend in the wire.

 Step 9

Slide the pushrod snap link on the wire. Rotate the link so it
snaps on the wire. You may need to use pliers to snap the
link onto the wire.

30 Hangar 9 Alpha 40 ARF Assembly Manual

 Step 10

Use diagonal cutters to trim the excess wire above the
link so it does not interfere with the operation of the radio
system. Leave a small amount of wire so the pushrod snap
link cannot accidentally slip up and over the wire.

 Step 11

Move the throttle stick to the low throttle position. With the
carburetor closed, attach the servo horn on the servo using a
#1 Phillips screwdriver.

Elevator Linkage Installation

Required Parts

Fuselage Safety tubing
Clevis Pushrod snap link
2-56 x 28-inch pushrod wire

Required Tools and Adhesives

Hobby knife with #11 blade Pliers
Phillips screwdriver: #1 Ruler
Diagonal cutters

 Step 1

Locate the items necessary to install the elevator linkage.

 Step 3

Use a hobby knife to cut a 1/4-inch (6mm) piece from the clear
safety tubing. Slide the tubing onto the clevis, and then thread
the clevis 10-turns on the elevator pushrod wire as shown.

 Step 12

Check the operation of the carburetor using the radio
system. The servo should move without any binding at
closed or open throttle. If it does, adjust the clevis at the
carburetor as necessary, or use the radio travel volume to
correct any adjustment issues.

 Step 13

If you are going to step away from your model, make sure to
turn off both the transmitter and receiver.

 Step 2

Slide the 2-56 x 28-inch pushrod wire into the tube in the
fuselage for the elevator. Make sure the threaded end goes
into the tube first.

31Hangar 9 Alpha 40 ARF Assembly Manual

 Step 4

Attach clevis
to center hole

Connect the clevis to the center hole of the elevator control
horn. Slide the safety tubing over the forks of the clevis to
prevent it from opening accidentally.

 Step 5

With the radio system on, center the stick and trim for
the elevator at the radio. Check that the servo horn on the
elevator servo is centered, and that the arm with the hole
1/2-inch (13mm) from the center of the horn is facing
toward the elevator pushrod wire.

 Step 6

Use a ruler to make sure the elevator is centered with the
stabilizer. Use a felt-tipped pen to mark the pushrod wire
where it crosses the hole on the servo horn.

 Step 7

Use pliers to bend the pushrod wire 90-degrees at the mark
made in the previous step.

32 Hangar 9 Alpha 40 ARF Assembly Manual

 Step 8

Use a pin vise and 5/64-inch (2mm) drill bit to enlarge the
hole in the servo horn.

 Step 10

Slide the pushrod wire through the hole in the servo horn.
The horn will fit against the bend in the wire.

 Step 12

Use diagonal cutters to trim the excess wire above the
link so it does not interfere with the operation of the radio
system. Leave a small amount of wire so the pushrod snap
link cannot accidentally slip up and over the wire.

 Step 9

Remove the servo horn from the servo using a #1 Phillips
screwdriver. Use diagonal cutters to remove any unused
arms from the horn so they don’t interfere with the operation
of the servo.

 Step 11

Slide the pushrod snap link on the wire. Rotate the link so it
snaps on the wire. You may need to use pliers to snap the
link onto the wire.

 Step 13

Secure the elevator servo horn to the elevator servo using
the screw removed from the servo. Use a #1 Phillips
screwdriver to tighten the screw.

 Step 14

If you are going to step away from your model, make sure to
turn off both the transmitter and receiver.

33Hangar 9 Alpha 40 ARF Assembly Manual

Rudder and Steering Linkage

Installation

Required Parts

Fuselage 180-degree servo horn
Safety tubing Clevis
Pushrod snap link E-clip
Small washer Pushrod connector
3mm x 3mm setscrew Transmitter
2-56 x 28-inch pushrod wire

Required Tools and Adhesives

Drill bit: 5/64-inch (2mm) Pin vise
Felt-tipped pen Pliers
Hobby knife with #11 blade Ruler
Hex wrench or ball driver: 1.5mm

 Step 1

Locate the items necessary to install the rudder linkage and to
connect the steering pushrod wire to the rudder servo horn.

 Step 2

With the radio system on, center the rudder stick and trim.
Remove the standard servo horn from the rudder servo and
place a 180-degree horn on the rudder servo. The horn will
align perpendicular to the servo centerline as shown. If not,
rotate the arm 180-degrees as there are an odd number of
splines on the servo output and this usually corrects the
alignment issue.

 Step 3

Use a pin vise and 5/64-inch (2mm) drill bit to enlarge a hole on
the servo horn that is 9/16-inch (14mm) from the center of the
servo horn on the side closest to the steering pushrod wire.

 Step 4

Use a pin vise and 5/64-inch (2mm) drill bit to enlarge a hole
on the servo horn that is 1/2-inch (12mm) from the center of
the servo horn on the side closest to the rudder pushrod tube.

 Step 5

Remove the horn from the servo. Insert the pushrod
connector in the outer hole of the servo horn.

34 Hangar 9 Alpha 40 ARF Assembly Manual

 Step 6

Place the small washer on the opposite side of the horn. The
connector is then secured using a small E-clip. Use pliers to
snap the E-clip in position.

 Step 7

Slide the 2-56 x 28-inch pushrod wire into the tube in the
fuselage for the rudder. Make sure the threaded end goes
into the tube first. Use a hobby knife and #11 blade to trim
the covering on the fuselage where the pushrod exits.

 Step 8

Use a hobby knife to cut a 1/4-inch (6mm) piece from the clear
safety tubing. Slide the tubing onto the clevis, and then thread
the clevis 10-turns on the rudder pushrod wire as shown.

35Hangar 9 Alpha 40 ARF Assembly Manual

 Step 9

Attach clevis
to center hole

Connect the clevis to the center hole of the rudder control
horn. Slide the safety tubing over the forks of the clevis to
prevent it from opening accidentally.

 Step 10

Place the servo horn back on the rudder servo. Make sure
the horn is aligned correctly as described previously.

 Step 12

Remove the rudder servo horn. Use pliers to bend the pushrod
wire 90-degrees at the mark made in the previous step.

 Step 11

Use a ruler to make sure the rudder is centered with the
fin. Use a felt-tipped pen to mark the pushrod wire where it
crosses the hole enlarged previously on the servo horn.

 Step 13

Slide the pushrod wire through the hole in the servo horn.
The horn will fit against the bend in the wire.

36 Hangar 9 Alpha 40 ARF Assembly Manual

 Step 14

Slide the pushrod snap link on the wire. Rotate the link so it
snaps on the wire. You may need to use pliers to snap the
link onto the wire.

 Step 15

Use diagonal cutters to trim the excess wire above the
link so it does not interfere with the operation of the radio
system. Leave a small amount of wire so the pushrod snap
link cannot accidentally slip up and over the wire.

 Step 17

Center the nosewheel so it is aligned with the centerline of
the fuselage. Use a 3mm x 3mm setscrew and 1.5mm hex
wrench to tighten the setscrew that secures the steering
pushrod wire. Make sure to use threadlock on the setscrew.

 Step 16

Slide the steering pushrod wire through the pushrod
connector. Use the screw from the servo and a #1 Phillips
screwdriver to attach the horn to the rudder servo.

Note: If you find that your model does not track straight
on the ground, loosen the setscrew to adjust the steering.
Do not use the rudder trim to adjust the steering. Use the
rudder trim for in-flight corrections only.

 Step 18

If you are going to step away from your model, make sure to
turn off both the transmitter and receiver.

37Hangar 9 Alpha 40 ARF Assembly Manual

Aileron Servo Installation

Required Parts

Wing panel, right Servo with hardware
Clevis (2) Pushrod snap link (2)
2-56 x 6
Safety tubing

Required Tools and Adhesives

Drill bit: 5/64-inch (2mm) Drill
Hobby knife with #11 blade Pin vise
Ruler Pliers
Pencil Thin CA
Phillips screwdriver: #1

1

/8-inch pushrod wire (2)

 Step 2

Install the grommets and brass eyelets in the servo. Place the
servo in the wing with the servo output shaft to the trailing
edge of the wing. Use a pencil to transfer the positions for the
servo mounting screws onto the servo mount.

 Step 3

Remove the servo from the wing. Use a drill and 5/64-inch
(2mm) drill bit to drill the four holes to mount the servo.

 Step 1

Locate the items necessary to install the aileron servo
in the wing.

Hint: Place the drill bit in the drill as far as possible to
avoid accidentally drilling through the top of the wing.

 Step 4

Place 2–3 drops of thin CA in each of the holes to harden the
surrounding wood. This will make the screws more secure
and less likely to vibrate loose.

38 Hangar 9 Alpha 40 ARF Assembly Manual

 Step 5

Use a #1 Phillips screwdriver and the screws provided with
the servo to secure the aileron servo in the wing.



Step 7

Use a ruler and measure 4
the clevis. Use a felt-tipped pen to mark the pushrod wire. Use
pliers to make a 90-degree bend in the pushrod wire as shown.

3

/8-inch (111mm) from the pin in

 Step 9

Repeat Steps 6 through 8 to make a second aileron
pushrod wire.

 Step 6

Use a hobby knife to cut a 1/4-inch (6mm) piece from the
safety tubing. Slide the tubing onto a nylon clevis. Thread the
clevis 10-turns on a 6-1/8-inch (155mm) threaded pushrod.

 Step 8

Measure 3/8-inch (10mm) up from the bend and use
diagonal cutters to trim the pushrod wire as shown.

 Step 10

Remove the servo horn from the aileron servo. Use side
cutters to remove the two shorter arms from the servo horn.

39Hangar 9 Alpha 40 ARF Assembly Manual

 Step 11

Use a pin vise and 5/64-inch (2mm) drill bit to enlarge the
holes in the servo arm that are 1/2-inch (12mm) from the
center of the horn as shown.

 Step 12

Plug the aileron servo into the extension inside the fuselage.
Turn on the transmitter and center the aileron stick and trim.
Attach the servo horn to the servo using the screw provided
with the servo and a #1 Phillips screwdriver.

 Step 13

Connect the aileron linkages to the holes of the servo horn
that were enlarged in the previous steps. Use the pushrod
snap links for this step.

Wing Assembly

Required Parts

Wing panel (left and right) Aluminum wing tube
Clear tape

Note: The following covers the assembly of the wing
without the use of glue. The wing, when joined in this
method, is very strong and does not need to be glued
together. You will want to purchase additional clear tape
if you plan on breaking the wing down into two pieces
for transportation purposes.

 Step 1

Locate the items necessary to join the left and
right wing panels.

40 Hangar 9 Alpha 40 ARF Assembly Manual

 Step 2

Slide the wing tube into the wing panel as shown. The wing
tube will only slide in halfway, so do not force it in any
further than it will slide easily.

 Step 3

Slide the remaining wing panel onto the wing tube.

 Step 4

As you slide the wing panels together, make sure the
aluminum pin at the back (trailing edge) of the wing slides
into the hole of the receiving wing panel. Slide the two wing
panels tightly together so there is no gap between the two.

 Step 5

Use the supplied clear tape to secure the joint between the
two wing panels. Make sure to apply the tape to both the top
and bottom of the joint.

 Step 6

Connect the clevises from the aileron pushrods to the aileron
control horns.

 Step 7

Plug the aileron servo into the extension coming from the
aileron port of the receiver. Turn on the radio system and
center the aileron stick and trim. Use a ruler to check that the
aileron are in alignment with the bottom of the wing. If they
are not, thread the clevis in or out as necessary to align the
aileron and wing. Make sure to align both aileron at this time.

41Hangar 9 Alpha 40 ARF Assembly Manual

Optional: Gluing the Wing Halves

Required Parts

Wing panel (left and right) Aluminum wing tube
Covering (white) Covering (red)

Required Tools and Adhesives

30-minute epoxy Mixing cup
Mixing stick Epoxy brush
Rubbing alcohol Paper towel
Low-tack tape Covering iron

 Step 2

Slide the wing tube into the wing panel as shown. The wing
tube will only slide in halfway, so do not force it in any
further than it will slide easily.

Note: It is not necessary to glue the wing panels
together on your model. This section has been provided
in case you opt to do so. Make sure your vehicle has
enough room to transport the joined wing before joining
the wing panels using this method.

 Step 1

Locate the items necessary to join the left and
right wing panels.

 Step 4

Slide the remaining wing panel onto the wing tube.

 Step 3

Mix 1/2-ounce total (15ML) of 30-minute epoxy. Use an
epoxy brush to apply a thin layer of epoxy to each of the
wing roots as shown.

42 Hangar 9 Alpha 40 ARF Assembly Manual

 Step 5

As you slide the wing panels together, make sure the pin at
the back (trailing edge) of the wing slides into the hole of
the receiving wing panel. Slide the two wing panels tightly
together so there is no gap between the two.

 Step 6

Use a paper towel and rubbing alcohol to remove any epoxy
that seeps from the joint between the two wing panels.

 Step 7

Use tape (low-tack tape suggested) to keep the two wing
panels tight against each other until the epoxy is fully cured.

 Step 8

After the epoxy has fully cured, use a covering iron to apply
the covering to the joint of the wing. Use the red covering
on the bottom of the wing, and the white covering on the
top of the wing.

 Step 9

Connect the clevises from the aileron pushrods to the aileron
control horns. The alignment of the ailerons will be checked
later in this manual.

 Step 10

Plug the aileron servo into the extension coming from the
aileron port of the receiver. Turn on the radio system and
center the aileron stick and trim. Use a ruler to check that the
aileron are in alignment with the bottom of the wing. If they
are not, thread the clevis in or out as necessary to align the
aileron and wing. Make sure to align both aileron at this time.

43Hangar 9 Alpha 40 ARF Assembly Manual

Wing Installation

Required Parts

Wing Fuselage
Rubber band (10)

 Step 1

Locate the rubber band to secure the wing to the fuselage.

 Step 2

Locate the aileron extension that is inside the fuselage. Align
the colors from the aileron servo lead with the extension so
they match, then plug them together.

 Step 3

Start securing the wing to the fuselage by installing two of
the rubber bands.

Hint: Always start with the cross rubber bands. This
will keep the wing from twisting on the fuselage when
installing the remaining rubber bands.

 Step 4

Install a second set of rubber bands on the wing
as shown.

 Step 5

Continue installing a total of six or more of the rubber bands,
alternating the direction of each set until they have all been
installed.

Hint: Always end the rubber band installation by
installing the cross rubber bands last. They will help in
keeping all the other rubber bands in position on the
wing dowels.

Hint: After flying, store your rubber bands in a bag with
a small amount of baby powder. This will soak up the fuel
that is on the rubber bands, making them last longer.

44 Hangar 9 Alpha 40 ARF Assembly Manual

Checking the Control Surface

Movement

Required Parts

Transmitter Assembled airframe

The control direction has been set at the factory. This
section has been provided in case any servos or control
surfaces are replaced so the control direction can be
checked at a later date.

CHECKING THE ELEVATOR

Check the movement of the elevator with the radio system.
Pushing the elevator/aileron stick (right stick on the
transmitter) forward will make the airplane elevator move
down. This will cause the aircraft to pitch down while in flight.

CHECKING THE AILERONS

Check the movement of the aileron using the transmitter.
When the aileron/elevator stick is moved left, the left aileron
will move up and the right aileron will move down. This will
cause the aircraft to roll left in flight.

CHECKING THE RUDDER

Check the movement of the rudder using the transmitter.
When the left stick is moved left, the rudder should also
move left. This will cause the aircraft to turn left while on the
ground and to yaw left while in flight.

Check the movement of the elevator with the radio
system. Pulling the elevator/aileron stick (right stick on the
transmitter) back will make the airplane elevator move up.
This will cause the aircraft to pitch up in flight.

Check the movement of the aileron using the transmitter.
When the elevator/aileron stick is moved right, the right
aileron will move up and the left aileron will move down.
This will cause the aircraft to roll right in flight.

Check the movement of the rudder using the transmitter.
When the rudder/throttle stick (left side of the transmitter)
is moved right, the rudder should also move right. This will
cause the aircraft to turn right while on the ground and to
yaw right while in flight.

45Hangar 9 Alpha 40 ARF Assembly Manual

Checking the Throttle Operation

Required Parts

Fuselage assembly Transmitter

THROTTLE CLOSED

Move the throttle stick and trim down to the fully closed
position as shown. The carburetor should close without
binding the throttle servo. If the servo binds, you will need to
adjust the clevis at the carburetor by threading it in or out to
eliminate any binding.

THROTTLE OPEN

Move the throttle stick and trim up or to the fully open
position as shown. The carburetor should open without
binding the throttle servo. If the servo binds, you will need to
adjust the clevis at the carburetor by threading it in or out to
eliminate any binding.

THROTTLE SET TO IDLE

Move the throttle stick down to the fully closed position. Move
the trim lever upward to open the carburetor roughly 1/16­inch (1.5mm). This will be the idle position for your engine.
The idle will be fine-tuned at the field so the engine will idle
reliably without stalling for slow flight and landing procedures.

46 Hangar 9 Alpha 40 ARF Assembly Manual

Balancing Your Alpha ARF

In order for your Alpha 40 ARF to fly correctly, you will
need to check the balance of the plane with the fuel tank
empty. This is done by supporting the aircraft either using
your fingers or by using a balancing stand. Not checking the
balance can result in an aircraft that is difficult to fly, which
can lead to the possibility of crashing your model.

 Marking the Balance Point

The first step in balancing your Alpha 40 ARF is to mark the
location for the balance point. The ideal balance point for the
Alpha ARF is 23/4–3 inches (70–76mm) back from the leading
edge against the fuselage. If your plane is only slightly out
of balance, try placing the balancing stand towards the nose
or tail by 1/8-inch (3mm) and recheck the balance. If it looks
good and sits level, then you’re good to go.

Balanced Correctly

Nose Heavy – Add Weight to Tail

Adding Weights to Correct the Balance

Due to manufacturing differences, it is possible that the Alpha
40 ARF may not be balanced properly. Weights can be added
to either the tail or the nose of your Alpha ARF if it does not
balance properly. Stick-on weights (Self Stick Weight, 6 oz
HAN3626) available at your local hobby store are the easiest
to use, and come in sizes that are easily placed on your plane.
Add just enough weight as necessary to balance your plane.
Once the weight has been added, make sure it is secure and
will not fall off in flight.

 Lifting the Model and Observations

Make sure the Alpha ARF is balanced using either your
fingers or a balancing stand. Place or lift the airplane so it is
supported at the marks made in the previous step. The plane
will rest level when balanced correctly. If not, weights must
be added to correct any balancing problems.

Tail Heavy – Add Weight to Nose

47Hangar 9 Alpha 40 ARF Assembly Manual

Control Throws

 Step 1

Check the battery voltage on both the transmitter and
the receiver battery packs. Do not fly below 4.3V on the
transmitter if you are using a Spektrum transmitter that uses
4-cells to power the transmitter. Do not fly below 9.5V on the

transmitter if you are using a JR or Spektrum transmitter that

uses 8-cells to power the transmitter. Do not fly if the receiver
pack is at or below 4.7V. To do so may crash your aircraft.

 Step 2

Check the movement of the elevator with the radio system.
Moving the elevator stick toward the bottom of the
transmitter will make the airplane elevator move up.

 Step 3

Check the movement of the ailerons with the radio system.
Moving the aileron stick right will make the right aileron
move up and the left aileron move down.

 Step 4

Use a ruler to adjust the throw of the elevator, ailerons
and rudder.

Aileron High Rate

Up 3/8-inch (10mm) (14 degrees)
Down 3/8-inch (10mm) (14 degrees)

Aileron Low Rate

Up 1/4-inch (6mm) (8 degrees)
Down 1/4-inch (6mm) (8 degrees)

Elevator High Rate

Up 1/2-inch (13mm) (16 degrees)
Down 1/2-inch (13mm) (16 degrees)

Elevator Low Rate

Up 5/16-inch (8mm) (10 degrees)
Down 5/16-inch (8mm) (10 degrees)

Rudder High Rate

Left 7/8-inch (22mm) (20 degrees)
Right 7/8-inch (22mm) (20 degrees)

Rudder Low Rate

Left 1/2-inch (13mm) (11 degrees)
Right 1/2-inch (13mm) (11 degrees)

Note: Measurements are taken at the inner or widest
point on the control surface.

These are general guidelines measured from our own flight
tests. You can experiment with higher rates to match your
preferred style of flying.

Note: Travel Adjust, Sub-Trim and Dual Rates are
not listed and should be adjusted according to each
individual model and preference.

Once all control throws are set, make sure the
safety tubing is slid over the forks of the clevises to
prevent them from opening accidentally in ight.

Maintaining Your Model

The following is a check list you should follow every time you
have completed a flying session with your model. Doing so will
keep your aircraft in the best flying condition.

Clean Up

After a long flying session with your model, you will want to
clean it up before loading it into your vehicle to head home.
Use cleaner and a paper towel to wipe down the exterior of
your plane, removing the fuel residue. Remember, a clean
plane will last longer since the fuel won’t be allowed to soak
into any exposed wood.

Checking the Propeller

Check to make sure the propeller is tightly secured to the
engine. If not, remove the spinner and use a crescent wrench
to tighten it back down. If you have had any not-so-great
landings, you will want to inspect the propeller for any
damage. Small nicks and scratches can quickly become
fractures, causing the propeller to be unsafe for flight.
Always carry a few spare propellers so a damaged propeller
can be replaced at the field, increasing your flying time per
trip to the field.

Checking the Clevises

Inspect the aileron, elevator and rudder clevises to make
sure they are connected and in good working order. If you
find a clevis is showing signs of wear or broken, replace it
with a new clevis. Also check the nylon connectors at the
servo for any wear or damage. If they look worn or in bad
shape, replace them as well.

Checking the Control Horns

Inspect the control horns to make sure they have not
crushed the wood of the control surface. If so, remove the
control horn screws to remove the control horn. Place 2–3
drops of thin CA into each of the screw holes. In addition,
use a T-pin to poke small holes in the covering in the area
where the control horn mounts, then saturate the area with
thin CA. This will harden the wood and give the control
horns a solid surface to be mounted to.

Checking the Wheel Collars

Check the setscrews on the wheel collars for the main and
tail wheel to make sure they are not loose. Use a 1.5mm hex
wrench to tighten the setscrews. It is suggested if they loosen
frequently to remove them, apply threadlock to the setscrews,
then secure the wheel collars back into position. The threadlock
and hex wrench are included in the kit for this purpose.

48 Hangar 9 Alpha 40 ARF Assembly Manual

Check the Muffler Bolts

Use a 2.5mm hex wrench (Evolution 2-stroke) or box wrench
(Saito 4-stroke) to make sure the hardware holding the
muffler onto the engine is tight and has not vibrated loose
during flight.

Check the Engine Mount Bolts

Remove the spinner and propeller from the engine. Remove
the exhaust stacks from the fuselage, then remove the
cowling from the fuselage. Remove the muffler from the
engine, and then use a Phillips screwdriver to make sure the
four bolts securing the engine to the mount are tight.

Flight Preparations

Flight preparations must be checked each time you travel to
the flying field. Because your model will encounter a variety of
situations, it is best to keep an eye on the various components
of your model to keep it in the best flying condition.

 Checking the Frequency

When using a 2.4GHz radio system, follow the guidelines for
use of these radio systems at your particular field.

 Checking the Controls

Before starting your engine, check to make sure the controls
are operating in the correct directions and the linkages and
surfaces are not binding anywhere. Also look at the clevises
and clevis retainers to make sure they are secure and will not
come loose or fail in flight.

 Fueling your Model

Fill the fuel tank with the proper fuel. Fill the tank by
connecting the fuel pump to the line going to the needle
valve or to the fuel dot on the side of the cowling.
Disconnect the fuel line attached to the pressure fitting of the
muffler; your tank is full when fuel begins to run out of the
pressure line. Reconnect the fuel lines to the needle valve
assembly or insert the plug into the fuel dot and connect the
line to the muffler.

Note: It is very important to reconnect the lines to the
correct place. If they are reconnected incorrectly, the
engine will not run properly.

Safety Do’s and Don’ts for Pilots

• Ensure your batteries have been properly charged prior to

your initial flight.

• Keep track of the time the system is turned on so you will

know how long you can safely operate your system.

• Consult local laws and ordinances before choosing a

location to fly your aircraft.

• Perform a ground range check prior to the initial flight

of the day. See the “Daily Flight Checks Section” for
information.

• Check all control surfaces prior to each takeoff.

• Do not fly your model near spectators, parking areas or

any other area that could result in injury to people or
damage of property.

• Do not fly during adverse weather conditions. Poor

visibility can cause disorientation and loss of control of
your aircraft. Strong winds can cause similar problems.

• Do not point the transmitter antenna directly toward the

model. The radiation pattern from the tip of the antenna is
inherently low.

• Do not take chances. If at any time during flight

you observe any erratic or abnormal operation, land
immediately and do not resume flight until the cause of
the problem has been ascertained and corrected. Safety
can never be taken lightly.

Dual Rate Recommendations

• We recommend that the rudder dual rate be set to Low

for takeoff to help minimize overcorrection during the
takeoff roll.

• We recommend the rudder dual rate be set to High for

landing to help maintain heading as the model transitions
from flying speed to taxi speeds.

• Elevator and Aileron dual rates should be adjusted
for personal feel and also if there is any unusual
wind conditions.

Daily Flight Checks

 Step 1

Check the battery voltage on both the transmitter and
the receiver battery packs. Do not fly below 4.3V on the
transmitter if you are using a Spektrum transmitter that uses
4-cells to power the transmitter. Do not fly below 9.5V on the

transmitter if you are using a JR or Spektrum transmitter that

uses 8-cells to power the transmitter. Do not fly if the receiver
pack is at or below 4.7V. To do so may crash your aircraft.

Note: When you check these batteries, ensure you have the
polarities correct on your expanded scale voltmeter.

 Step 2

Check all hardware (linkages, screws, nuts, and bolts) prior
to each day’s flight. Be sure that binding does not occur and
that all parts are properly secured.

 Step 3

Ensure that all surfaces are moving in the proper manner.

 Step 4

Perform a ground range check before each day’s flying session.

 Step 5

Prior to starting your aircraft, turn off your transmitter, then
turn it back on. Do this each time you start your aircraft.
If any critical switches are on without your knowledge, the
transmitter alarm will warn you at this time.

 Step 6

Check that all trim levers are in the proper location.

 Step 7

All servo pigtails and switch harness plugs should be
secured in the receiver. Make sure that the switch harness
moves freely in both directions.

Glossary of Terms

Ailerons: Each side of this airplane has a hinged control

surface (aileron), located on the trailing edge of the wing.
Move the aileron stick on the transmitter left, the left aileron
moves up and the right aileron moves down. Moving the left
aileron up causes more drag and less lift, causing the left wing
to drop down. When the right aileron moves down, more lift is
created, causing the right wing to rise. This interaction causes
the airplane to turn or roll to the left. Perform the opposite
actions, and the airplane will roll to the right.

Clevis: The clevis connects the wire end of the pushrod to
the control horn of the control surface. Being a small clip,
the clevis has fine threads so you can adjust the length of
the pushrod.

Control Horn: This arm connects the control surface to the
clevis and pushrod.

Dihedral: The degree of angle (V-shaped bend) at which the
wings intersect the fuselage is called dihedral. More dihedral

49Hangar 9 Alpha 40 ARF Assembly Manual

gives an airplane more aerodynamic stability. Some sailplanes
and trainer planes with large dihedral dispense with ailerons
and use only the rudder to control the roll and yaw.

Elevator: The hinged control surface on the back of the
stabilizer that moves to control the airplane’s pitch axis.
Pulling the transmitter’s control stick toward the bottom of
the transmitter moves the elevator upward, and the airplane
begins to climb. Push the control stick forward, and the
airplane begins to dive.

Fuselage: The main body of an airplane.
Hinge: Flexible pieces used to connect the control surface

to the flying surface. All hinges must be glued properly and
securely to prevent the airplane from crashing. (This has
already been done for you on this aircraft.)

Horizontal Stabilizer: The horizontal flying surface of the
tail gives the airplane stability while in flight.

Leading Edge: The front of a flying surface.
Main Landing Gear: The wheel and gear assembly the

airplane uses to land. It is attached to the bottom of the fuselage.
Nose Gear: The part of the landing gear is attached to the

nose of the fuselage. The nose gear is usually connected to the
rudder servo to help you steer the airplane on the ground.

Pitch Axis: The horizontal plane on which the airplane’s
nose is raised or lowered. By moving the elevator, you can
raise the airplane’s nose above the pitch axis (climb) or
lower it below the pitch axis (dive).

Pushrod: The rigid mechanism that transfers movement
from the servo to the control surface.

Roll Axis: The horizontal plane on which the airplane’s
wings are raised or lowered. By adjusting the ailerons, you
can drop a wing tip below the roll axis and cause the airplane
to bank or roll.

Rudder: The hinged control surface on the vertical stabilizer
that controls the airplane’s yaw. Moving the rudder to the
left causes the airplane to yaw left; moving the rudder to the
right causes it to yaw right.

Servo: The servo transforms your ground commands into
physical adjustments of the airplane while it’s in the air.

Servo Output Arm: A removable arm or wheel connecting
the servo to the pushrod (also called servo horn).

Spinner: Term describing the nose cone that covers the
propeller hub.

Threadlock: A liquid that solidifies; used to prevent screws
from loosening due to vibration.

Torque Rods: Inserted into the ailerons, these rigid wire

50 Hangar 9 Alpha 40 ARF Assembly Manual

rods run along the wing’s trailing edge, then bend downward
and connect to the pushrod.

Vertical Stabilizer: The vertical flying surface of the tail
gives the airplane stability while in flight.

Wheel Collar: The round, metal retaining piece that
anchors wheels in place on the wheel axle.

Wing: The lifting surface of an airplane.
Yaw Axis: The vertical plane through which the airplane’s

nose rotates as it yaws to the left or to the right. The rudder
controls the yaw axis.

Safety, Precautions and Warnings

As the user of this product, you are solely responsible for
operating it in a manner that does not endanger yourself
and others or result in damage to the product or the
property of others.

Carefully follow the directions and warnings for this and any
optional support equipment (chargers, rechargeable battery
packs, etc.) you use.

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
necessary 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 out 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.) 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.

Warranty and Repair Policy

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.

Horizon reserves the right to change or modify this warranty
without notice and disclaims all other warranties, express or
implied.

(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
all warranty claims.

(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 Product
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).

WARRANTY SERVICES

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 Product Support
representative. You may also find information on our website
at www.horizonhobby.com.

INSPECTION OR REPAIRS

If this Product needs to be inspected or repaired, please
use the Horizon Online Repair Request submission process
found on our website or call Horizon to obtain a Return
Merchandise Authorization (RMA) number. 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. An
Online Repair Request is available at www.horizonhobby.com
http://www.horizonhobby.com under the Repairs tab. If you
do not have internet access, please contact Horizon Product
Support to obtain a RMA number along with instructions for
submitting your product for repair. When calling Horizon,
you will be asked to provide your complete name, street
address, email address and phone number where you can
be reached during business hours. When sending product
into Horizon, please include your RMA number, a list of the
included items, and a brief summary of the problem. A copy
of your original sales receipt must be included for warranty
consideration. Be sure your name, address, and RMA
number are clearly written on the outside of the shipping
carton.

Notice: Do not ship batteries to Horizon. If you have any
issue with a battery, please contact the appropriate Horizon
Product Support office.

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.

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.
Horizon accepts money orders and cashiers checks, as well
as Visa, MasterCard, American Express, and Discover cards.
By submitting any item to Horizon for inspection or repair,
you are agreeing to Horizon’s Terms and Conditions found
on our website under the Repairs tab.

Country of Purchase Horizon Hobby Address Phone Number/ Email

United States Horizon Service Center

(Electronics and engines)

Horizon Product Support
(All other products)

United Kingdom Horizon Hobby Limited Units 1-4 Ployters Rd

4105 Fieldstone Rd
Champaign, Illinois
61822 USA

4105 Fieldstone Rd
Champaign, Illinois
61822 USA

Staple Tye
Harlow, Essex

877-504-0233
[e-mail]

877-504-0233
[e-mail]

[phone]
[e-mail]

CM18 7NS
United Kingdom

Germany Horizon Technischer Service Hamburger Str. 10

25335 Elmshorn
Germany

France Horizon Hobby SAS 14 Rue Gustave Eiffel

[phone]
[e-mail]

[phone]
Zone d’Activité du Réveil Matin
91230 Montgeron

51Hangar 9 Alpha 40 ARF Assembly Manual

Instructions for Disposal of
WEEE by Users in the
European Union

This product must not be disposed of with
other waste. Instead, it is the user’s responsibility to dispose
of their waste equipment by handing it over to a designated
collection point for the recycling of waste electrical and
electronic equipment. The separate collection and recycling
of your waste equipment at the time of disposal will help to
conserve natural resources and ensure that it is recycled in
a manner that protects human health and the environment.
For more information about where you can drop off your
waste equipment for recycling, please contact your local city
office, your household waste disposal service or where you
purchased the product.

2010 Official Academy of Model

Aeronautics Safety Code

GENERAL

1. A model aircraft shall be defined as a non-human

carrying device capable of sustained flight in the
atmosphere. It shall not exceed limitations established
in this code and is intended to be used exclusively for
recreational or competition activity.

2. The maximum takeoff weight of a model aircraft,

including fuel, is 55 pounds, except for those flown
under the AMA Experimental Aircraft Rules.

3. I will abide by this Safety Code and all rules established

for the flying site I use. I will not willfully fly my model
aircraft in a reckless and/or dangerous manner.

4. I will not fly my model aircraft in sanctioned events,

air shows, or model demonstrations until it has been
proven airworthy.

5. I will not fly my model aircraft higher than approximately

400 feet above ground level, when within three (3) miles
of an airport without notifying the airport operator. I will
yield the right-of-way and avoid flying in the proximity of
full-scale aircraft, utilizing a spotter when appropriate.

6. I will not fly my model aircraft unless it is identified with

my name and address, or AMA number, inside or affixed
to the outside of the model aircraft. This does not apply
to model aircraft flown indoors.

7. I will not operate model aircraft with metal-blade
propellers or with gaseous boosts (other than air),
nor will I operate model aircraft with fuels containing
tetranitromethane or hydrazine.

8. I will not operate model aircraft carrying pyrotechnic
devices which explode, burn, or propel a projectile of
any kind. Exceptions include Free Flight fuses or devices
that burn producing smoke and are securely attached
to the model aircraft during flight. Rocket motors up
to a G-series size may be used, provided they remain
firmly attached to the model aircraft during flight. Model
rockets may be flown in accordance with the National
Model Rocketry Safety Code; however, they may not
be launched from model aircraft. Officially designated
AMAAir Show Teams (AST) are authorized to use
devices and practices as defined within the Air Show
Advisory Committee Document.

9. I will not operate my model aircraft while under the
influence of alcohol or within eight (8) hours of having
consumed alcohol.

10. I will not operate my model aircraft while using any drug
which could adversely affect my ability to safely control
my model aircraft.

11. Children under six (6) years old are only allowed on a
flightline or in a flight area as a pilot or while under flight
instruction.

12. When and where required by rule, helmets must be
properly worn and fastened. They must be OSHA, DOT,
ANSI, SNELL or NOCSAE approved or comply with
comparable standards.

RADIO CONTROL

1. All model flying shall be conducted in a manner to avoid
over flight of unprotected people.

2. I will have completed a successful radio equipment
ground-range check before the first flight of a new or
repaired model aircraft.

3. Iwill not fly my model aircraft in the presence of
spectators until I become a proficient flier, unless I am
assisted by an experienced pilot.

4. At all flying sites a line must be established, in front of
which all flying takes place. Only personnel associated
with flying the model aircraft are allowed at or in front of
the line. In the case of airshows demonstrations straight
line must be established. An area away from the line
must be maintained for spectators. Intentional flying
behind the line is prohibited.

5. I will operate my model aircraft using only radio
control frequencies currently allowed by the Federal
Communications Commission (FCC). Only individuals
properly licensed by the FCC are authorized to operate
equipment on Amateur Band frequencies.

52 Hangar 9 Alpha 40 ARF Assembly Manual

53Hangar 9 Alpha 40 ARF Assembly Manual

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of Bachmann Industries, Inc.

© 2010 Horizon Hobby, Inc.

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17017.1 Revised 05/10