Hangar 9 Ultra Stick 40 ARF Assembly Manual

Ultra Stick™ 40 ARF

Assembly Manual

Specications

Wingspan: ..........................................................57.75 in (1467mm)

Length: ................................................................... 51 in (1295mm)

Wing Area: ................................... 700 sq in (715 with quad aps)

Weight: ..............................................................5–6 lb (2.3–2.7 kg)

Radio: ............................................................4-channel or greater

Engine: ..................................... .40–.46 2-stroke, .56–.82 4-stroke

Table of Contents

Contents of Kit and Parts Layout ...........................................2

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

Using the Manual ...................................................................4

Important Information Regarding Warranty Information .......4

UltraCote Covering Colors .....................................................4

Before Starting Assembly ......................................................4

Radio System Requirements .................................................4

Optional Items for Quad Flaps Installation .............................4

Recommended Setup–2-Stroke Glow ....................................4

Recommended Setup–4-Stroke Glow ....................................4

Field Equipment Required ......................................................4

Optional Field Equipment .......................................................4

Tools and Supplies .................................................................4

Additional Required Adhesives ..............................................4

Aileron Installation (Aileron Only) ..........................................5

Aileron and Flap Installation(Quad Flap Only) ........................7

Joining the Wing Panels ........................................................9

Completing the Wing Assembly ...........................................11

Horizontal Stabilizer Installation ...........................................13

Vertical Fin Installation .........................................................14

Preparation for Tail Gear Installation ....................................15

Rudder Installation ...............................................................16

Elevator Installation .............................................................18

Radio Installation .................................................................19

Aileron Servo Installation(Aileron only) or

Flap Servo Installation (Quad Flap Version) ...................22

Aileron Servo Installation(Quad Flap Version) .....................25

Landing Gear Installation .....................................................28

Engine Installation ...............................................................30

Nose Gear Installation ..........................................................34

Fuel Tank Assembly .............................................................36

Throttle Pushrod Connection and Fuel Tank Installation ......38

Final Radio Installation .........................................................40

Center of Gravity ..................................................................41

Control Throws ....................................................................41

Quad Flaps ...........................................................................42

Flight Preparations ...............................................................43

Safety Do’s and Don’ts for Pilots .........................................44

Daily Flight Checks ...............................................................44

Safety, Precautions and Warnings .......................................44

Warranty Information ...........................................................45

Instructions for Disposal of WEEE by

Users in the European Union .........................................46

2009 Official Academy of

Model Aeronautics Safety Code .....................................47

9

7

2

3

11

8

6

Contents of Kit and Parts Layout

Large Replacement Parts

1. HAN173001 Fuselage

2. HAN173002 Wing Set with Standard Ailerons

3. HAN173003 Tail Set

4. HAN173004 Quad Flaps

5. HAN173005 Aluminum Main Landing Gear

6. HAN173006 Nose Wheel Strut with Wheel

7. HAN173007 Spinner 21/4-inch, Red

8. HAN173009 Pushrod Set

9. HAN173010 Engine Mount

10. HAN173013 Wheels 21/2-inch (2)

11. HAN4709 Tail Wheel Assembly

1

5

10

3

Small Replacement Parts (not shown)

HAN173008 Decal Sheet
HAN173011 Fuel Tank 11 oz (320cc)
HAN173012 Wheel Axles

2

4

2 Hangar 9 Ultra Stick 40 ARF Assembly Manual

Included Parts Listing

PCKAGED IN BOX

Fuselage (1)
Right wing with aileron (1)
Left wing with aileron (1)
Horizontal stabilizer with elevator (1)
Vertical fin with rudder (1)
Right quad flap set (1)
Left quad flap set (1)

LINKAGES AND CONTROL HARDWARE

Nylon clevis (6) Ailerons, flaps, rudder and

elevator

90-degree snap link (6) Ailerons, flaps, rudder and

elevator

Clevis retainer tubing (6) Ailerons, flaps, rudder and

elevator

CA hinges (16) Ailerons, flaps, rudder and

elevator

2mm x 27

1

/2-inch pushrod (2) Elevator and rudder
2mm x 6-inch pushrod (4) Aileron and flap
Pushrod guide tube (2) Throttle and steering
2mm x 16mm machine screw (12) Control horns
Nylon control horn with backplate (6) Ailerons, flaps, rudder and

elevator

Pushrod support tab (1) Nose wheel pushrod support

FUEL TANK

11 oz (320cc) fuel tank (1)
Silicone fuel line (red, green, clear) (1) Fuel tank
Tank stopper (1) Fuel tank
Metal backing plate disk (2) Fuel tank
3mm machine screw (1) Tank
Clunk (1)
Aluminum tubing (3) Vent, fill and overflow
Balsa block (1) Fuel tank

LANDING GEAR

4mm wheel axles (2) Main wheels
8-32 x 5/8-inch Phillips machine screw (2) Landing gear to fuselage
#8 flat washer (2) Landing gear to fuselage
Pushrod connector with back and setscrew (2) Throttle and steering

1.5mm x 17

3

/4-inch pushrod (2) Throttle & steering

Aluminum landing gear (1) Main landing gear

1

2

/2-inch (64mm) rubber wheels (3) Main landing gear and nose

wheel option
Tail wheel wire with nylon bracket (1)
1-inch wheel (1) Tail wheel
2mm wheel collar (1) Tail wheel
4mm wheel collar (8) Main landing gear and nose gear
4mm nose gear wire strut (1) Tricycle gear option
Nose gear steering arm (1) Tricycle gear option

ENGINE MOUNT

Nylon engine mount (2)

1

2

/4-inch red plastic spinner with screws (1)

#8 silver flat washers (4) Engine to mount and mount to

firewall
8-32 x 1-inch socket head screws (4) Motor mount to firewall and

engine to mount
6-32 x 1 in socket head screw (4) Engine to mount
6-32 lock nuts (4) Engine to mount
#6 Flat washer (4) Engine to mount

WING ASSEMBLY AND INSTALLATION

Nylon 1/4-20 x 1

1

/2-inch wing bolts (2) Wing to fuselage
Wing bolt washer plate (1)
2 x 1/4-inch dowel rods (2) Anti-rotation pins
Hardwood wing spar (1)
1-inch white covering strip (1) Center wing joint

3Hangar 9 Ultra Stick 40 ARF Assembly Manual

Using the Manual

Radio System Requirements

Optional Field Equipment

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.

Important Information

Regarding Warranty Information

Please read our Warranty and Liability Limitations section on
Page 45 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.

UltraCote® Covering Colors

• Black HANU874

• White HANU870

• True Red HANU866

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

Spektrum Radio System (recommended)

• DX6i 6-channel radio or greater with receiver

(SPM6600)

• DS821 Digital Sport Servo (5) (JRPS821)

• Y-Harness (JSP98020) or 3-inch Servo Extension (2)

(JSP98100) for receiver to aileron servo extensions

• Receiver Battery, 2300mAh 5-cell (JRPB5006)

• JR Switch, Chargeswitch (JRPA004)

Optional Items for

Quad Flaps Installation

• DS821 Digital Sport Servo (JRPS821)

• DS821 Digital Sport Servo, Reverse (JRPS821R)

• 3-inch Servo Extension (2) (JSP98100) for receiver to

servo extensions

• 9-inch Servo Extension (2) (JRPA097) for servo to

servo extensions inside wing

Recommended Setup–2-Stroke Glow

• Evolution® .46NX with Muffler (EVOE0461)

• Evolution Propeller 11 x 5 (EVO11050) or

11 x 6 (EVO11060)

• Exhaust Diverter (DUB697) (optional)

Recommended Setup–4-Stroke Glow

• Saito™ .82 AAC with Muffler (SAIE082A or SAIE082AGK)

• Evolution Propeller 13 x 8 (EVO13080) or

14 x 6 (EVO14060)

• Exhaust Diverter (DUB697) (optional)

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)

• Selfstick Weights, 6 oz (HAN3626)

• PowerPro 12V Starter (HAN161)

• 12V 7Ah Sealed Battery (HAN102)

• Power Panel (HAN106)

• Blue Block After Run Oil (EVOX1000)

• Cleaner and towels

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
Rotary tool Rubbing alcohol
Ruler Diagonal cutters
String Threadlock
T-pin Sanding drum
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),
7/32-inch (5.5mm)

Additional Required Adhesives

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

HAN141 – Sealing Iron Sock

4 Hangar 9 Ultra Stick 40 ARF Assembly Manual

The Spektrum trademark is used with permission

of Bachmann Industries, Inc.

Aileron Installation (Aileron Only)

Required Parts

Wing panel (right and left)
Aileron, full length (right and left)
CA hinge (8)

Tools and Adhesives

Drill bit: 1/16-inch (1.5mm) Pin vise
Hobby knife with #11 blade Thin CA

Note: There are two wing configurations for your
model, standard two ailerons and quad flaps (ailerons
with flaps). This section covers the installation of the
ailerons for the two aileron versions of your model.

 Step 1

Check to make sure you have the correct aileron. The trim will
match the bottom of the wing.

 Step 2

Use a pin vise and 1/16-inch (1.5mm) drill bit to drill a hole in
the center of each hinge slot. Drill holes for both the aileron
and wing.

 Step 3

Place a T-pin in the center of each hinge. Insert the hinges in
the slots in the trailing edge of the wing. Try to align the slot in
the hinge with the hole drilled in the previous step.

5Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 4

Use the hinges to place the aileron in position. Use a hobby
knife to set the gap between the control surface and the wing.
Also check that the aileron can move freely without rubbing at
the wing tip.

 Step 5

Saturate each of the hinges with thin CA. Make sure to glue
both the top and bottom. Once the CA has cured, gently pull
on the aileron to make sure the hinges are secure. If not, apply
more CA to the loose hinge.

 Step 6

Flex the aileron up and down a number of times to break in
the aileron hinges.

 Step 7

Note: Do not use CA accelerator on the hinges. The CA
must be allowed to soak into the hinge and surrounding
wood.

6 Hangar 9 Ultra Stick 40 ARF Assembly Manual

Repeat Steps 1 through 6 to install the remaining aileron.

Aileron and Flap Installation

(Quad Flap Only)

Required Parts

Wing panel (right and left) Aileron (right and left)
Flap (right and left) CA hinge (8)

Tools and Adhesives

Drill bit: 1/16-inch (1.5mm) Pin vise
Hobby knife with #11 blade Thin CA

 Step 1

Check to make sure you have the correct aileron. The trim will
match the bottom of the wing.

 Step 2

Use a pin vise and 1/16-inch (1.5mm) drill bit to drill a hole in
the center of each hinge slot. Drill holes for both the aileron
and wing. Also prepare the flap at this time.

 Step 3

Place a T-pin in the center of each hinge. Insert the hinges in
the slots in the trailing edge of the wing. Try to align the slot in
the hinge with the hole drilled in the previous step.

Note: The flap and aileron have not been seperated at
this time and are still taped together as shipped.

7Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 4

Use the hinges to place the aileron in position. Use a hobby
knife to set the gap between the control surface and the wing.
Also check that the aileron can move freely without rubbing at
the wing tip.

 Step 5

Saturate each of the hinges with thin CA. Make sure to glue
both the top and bottom. Once the CA has cured, gently pull
on the aileron to make sure the hinges are secure. If not, apply
more CA to the loose hinge.

 Step 6

Flex the aileron up and down a number of times to break in
the aileron hinges.

8 Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 7

Installing the flap follows the same procedure as the aileron.
Position the flap, check the gap and that it doesn’t hit the
aileron and apply CA. Make sure to check the hinges and
break them in.

Joining the Wing Panels

Required Parts

Wing panel (right and let) Wing joiner

Tools and Adhesives

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

 Step 1

Mark the wing joiner and wing panel using a felt-tipped pen.
This is so you can orient the joiner correctly in this section of
the manual.

 Step 8

Repeat Steps 1 through 7 to attach the remaining aileron and
flap to the wing.

9Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 2

Mark a center line on the joiner. It should slide into each wing
panel up to the line. If not, lightly sand the joiner so it fits
correctly.

 Step 3

Use 30-minute epoxy to glue the joiner into the wing panels.
Apply epoxy in the joiner pocket and all sides of the joiner,
including the top and bottom edges. Also coat the exposed
wood on the root rib with epoxy. Start with one panel, insert
the joiner, then the opposite panel.

10 Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 4

Make sure the wing panels fit tightly together. Clean any epoxy
using a paper towel and rubbing alcohol. Use low-tack tape to
keep the panels tightly together while the epoxy cures.

Completing the Wing Assembly

Required Parts

Assembled wing Wing bolt plate
Covering Wing dowel (2)

Tools and Adhesives

Hobby knife with #11 blade Felt-tipped pen
Covering iron 30-minute epoxy
Low-tack tape Ruler

 Step 1

Use a hobby knife to remove the covering to expose the holes
in the wing bolt plate. Also remove the covering from one
side of the plate. Leave a 1/16-inch (1.5mm) edge of covering
around the perimeter as shown in the second photo.

Important: Make sure the leading edge and trailing
edges of the wing at the joint are aligned with each
other.

Note: The wing has no dihedral. It will rest flat on
your work surface while the epoxy cures. Make sure to
cover your work surface with waxed paper so you don’t
accidentally glue the wing to your work surface.

11Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 2

Position the wing bolt plate on the wing, aligning the holes
with those in the wing. Trace the outline of the plate onto the
wing using a felt-tipped pen. Use a hobby knife and #11 blade
to trim the covering from the wing 1/16-inch (1.5mm) inside
the line drawn.

 Step 3

Use 30-minute epoxy to glue the wing bolt plate to the wing.
Use low-tack tape to keep the plate secure while the epoxy
cures. Use a covering iron to apply the covering over the seam
between the wing panels.

 Step 4

Use 30-minute epoxy to glue the wing dowels in the leading
edge of the wing. Position them so they protrude 1/2-inch
(13mm) from the leading edge.

Hint: Add a radius to the front edge of the dowels to
make it easier to install them in the fuselage.

12 Hangar 9 Ultra Stick 40 ARF Assembly Manual

Horizontal Stabilizer Installation

A

A=A

Parallel

Required Parts

Fuselage Wing assembly
Stabilizer
1/4-20 x 1

Tools and Adhesives

Ruler Felt-tipped pen
Hobby knife with #11 blade T-pin
30-minute epoxy Flat blade screwdriver
Rubbing alcohol Paper towels
Mixing cup Epoxy brush
Mixing stick

1

/2-inch nylon wing bolt (2)

 Step 2

Secure the wing using two nylon wing bolts. Tighten the bolts
using a flat blade screwdriver.

 Step 4

Check the alignment of the stabilizer to the wing. Position the
stabilizer so the measurements from the stabilizer tips to the
wings tips is equal. Also check that the stabilizer is parallel to
the wing. Lightly sand the stabilizer saddle if adjustments are
required.

 Step 1

Install the wing by aligning the dowels from the wing into the
holes in the fuselage.

 Step 3

Use a ruler to mark the center of the stabilizer. Do not use the
covering as a guide as it may not be centered. Use a T-pin at
the rear of the stabilizer as a pivot and to keep the stabilizer in
position on the fuselage.

13Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 5

Use a felt-tipped pen to trace the outline of the fuselage on
the stabilizer. Use a hobby knife and #11 blade to remove
the covering from the center of the stabilizer 1/16-inch
(1.5mm) inside the line drawn. Use 30-minute epoxy to glue
the stabilizer to the fuselage. Use a paper towel and rubbing
alcohol to remove any excess epoxy before it has a chance to
fully cure. Allow the epoxy to cure before proceeding.

Vertical Fin Installation

Required Parts

Fuselage Vertical fin

Tools and Adhesives

Square Felt-tipped pen
Hobby knife with #11 blade 30-minute epoxy

 Step 1

Insert the fin in the slot at the rear of the fuselage. Use a felt­tipped pen to trace the outline of the fuselage on the area of
the fin that fits into the fuselage. Also trace the outline of the
fin on the top of the fuselage.

 Step 2

Use a hobby knife and #11 blade to remove the covering from
the fuselage and fin. Trim the covering 1/16-inch (1.5mm)
inside the lines drawn on the fuselage, and 1/16-inch (1.5mm)
below the line on the fin.

Note: Do not press on the knife when cutting the
covering. Cutting into the wood of the stabilizer will
weaken it and cause it to fail in flight.

14 Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 3

Use 30-minute epoxy to glue the fin to the fuselage. Use a
square to check the alignment of the fin to the stabilizer while
the epoxy cures to make sure it is aligned properly.

Hint: Use low-tack tape to hold the vertical fin in
position until the epoxy fully cures.

Preparation for Tail Gear Installation

Required Parts

Rudder Tail gear wire

Tools and Adhesives

Pin vise Drill bit: 1/8-inch (3mm)
Felt-tipped pen Ruler
30-minute epoxy Petroleum jelly
Hobby knife with #11 blade Sandpaper

Note: This section covers preparing the rudder for the
tail gear wire. If you are building the tricycle version
of this model, you can skip to the next section of the
manual.

 Step 1

Measure up 7/8-inch (22mm) from the bottom of the rudder
and mark it using a felt-tipped pen. Use a pin vise and 1/8­inch (3mm) drill bit to drill a hole that is 1-inch (25mm) deep
in the rudder.

 Step 2

Use a hobby knife and #11 blade to cut a groove from the hole
in the rudder to the bottom of the rudder for the bearing on
the tail gear wire to fit into.

15Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 3

Lightly sand the end of the wire that will fit into the rudder.
Apply a small amount of petroleum jelly to the top and bottom
of the bearing to keep epoxy from entering the bearing.

 Step 4

Insert the tail gear wire into the rudder. It should fit as shown.
Use 30-minute epoxy to glue only the wire entering the rudder
into the fin.

Rudder Installation

Required Parts

Fuselage assembly Rudder assembly
CA hinge (2)

Tools and Adhesives

Drill bit: 1/16-inch (1.5mm) Pin vise
Hobby knife with #11 blade Thin CA
T-pins

 Step 1

Use a pin vise and 1/16-inch drill bit to drill a hole in the
center of each hinge on both the fin and rudder.

16 Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 2

Insert a T-pin in the center of the two CA hinges. Slide the
hinges into the fin.

 Step 3

Fit the rudder to the fin. Use a hobby knife and #11 blade to
check the hinge gap and that the rudder is not rubbing the top
of the fin.

 Step 4

Use thin CA to glue the two hinges that secure the rudder and
fin. Perform a pull test on the hinges and break them in at this
time.

Note: If you are installing the tail wheel, it will be
necessary to enlarge the slot at the bottom of the fin to
fit the tail gear bushing as shown below.

Note: If you are installing the tail wheel, use 30-minute
epoxy to glue the tail gear bushing into the fuselage.

17Hangar 9 Ultra Stick 40 ARF Assembly Manual

Elevator Installation

Required Parts

Fuselage assembly CA hinge (6)
Elevator

Tools and Adhesives

Drill bit: 1/16-inch (1.5mm) Pin vise
Thin CA T-pins
Rotary tool with sanding drum (optional)
Felt-tipped pen (optional)

Note: This first step is only necessary if you are
installing the tail wheel. If you are building the tricycle
version, skip to Step 2.

 Step 1

Position the elevator against the stabilizer. Use a felt-tipped
pen to mark where the tail wheel wire rests against the
elevator. Use a rotary tool and sanding drum to make a notch
so the elevator does not bind against the wire.

 Step 3

Insert a T-pin in the center of the six stabilizer hinges. Insert
the hinges in the elevator as shown.

 Step 2

Use a pin vise and 1/16-inch (1.5mm) drill bit to drill a hole in
the center of each hinge slot in the stabilizer and elevator.

18 Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 4

Install the elevator against the stabilizer using the hinges. Set
the hinge gap using a hobby knife and #11 blade. Saturate
each hinge using thin CA. Allow the CA to fully cure before
checking the hinges.

 Step 5

Flex the elevator up and down a number of times to break in
the hinges.

Radio Installation

Required Parts

Fuselage assembly Servo with hardware (3)
Control horn (2) Control horn backplate (2)
Clevis retainer (2) Clevis (2)
Pushrod keeper (2) Screw lock connector
2-56 x 5/8-inch machine screw (4)
Pushrod wire, 27

Tools and Adhesives

Phillips screwdriver: #1 Thin CA
Pliers Diagonal cutter
Drill bit: 5/64-inch (2mm) Pin vise
Threadlock Felt-tipped pen

 Step 1

Use a #1 Phillips screwdriver to thread a servo mounting
screw into each of the holes in the servo tray. Apply 2–3 drops
of thin CA in each hole to harden the surrounding wood.

5

/8-inch (700mm) (2)

19Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 2

Use the hardware to mount the servos in the fuselage as
shown. Slide a 27
tube near the rudder servo. The wire will exit near the rudder
as shown. Use a hobby knife and #11 blade to trim the
covering so the wire can exit the fuselage.

5

/8-inch (700mm) pushrod wire into the

 Step 3

Slide a clevis retainer on a clevis, then thread the clevis
12-turns on the pushrod wire. Connect the clevis to the
control horn as shown. With the holes in the control horn
aligned with the hinge line, use a felt-tipped pen to mark the
mounting locations for the control horn mounting screws.

 Step 4

Use a pin vise and 5/64-inch (2mm) drill bit to drill the holes
for the screws. Use 2–3 drops of thin CA to harden the holes.
Secure the control horn to the rudder using two 2-56 x 5/8­inch machine screws and a control horn backplate.

20 Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 5

Enlarge the holes in a 180-degree control horn that are 9/16­inch (14mm) and 3/8-inch (9.5mm) from the center of the
servo horn.

Note: If you are building the tail dragger version you
can skip step 6.

 Step 6

Use side cutters to remove the unused arms from the servo
horn using diagonal cutters. Attach the pushrod connector to
the inside hole of the servo arm as shown. Make sure to use
threadlock on the nut so it doesn’t vibrate loose.

 Step 7

With the rudder servo centered, attach the arm to the servo.
With the rudder centered, use a felt-tipped pen to mark the
pushrod wire where it crosses the outside hole of the servo
horn. Use pliers to bend the wire 90-degrees at the mark.

Note: If you are building the tail dragger version it
is not necessary to enlarge the hole that is 3/8-inch
(9.5mm) from the center of the servo horn.

21Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 8

Trim the wire 3/8-inch (9.5mm) above the bend. Use a
pushrod keeper to secure the pushrod wire to the rudder
servo horn.

 Step 9

Repeat Steps 2 through 8 to connect the elevator pushrod
wire. When preparing the servo horn, use a hole that is 1/2­inch (13mm) from the center of the servo horn.

Aileron Servo Installation

(Aileron only) or

Flap Servo Installation

(Quad Flap Version)

Required Parts

Wing assembly Control horn (2)
Servo with hardware (2) Pushrod keeper (2)
Control horn backplate (2) Clevis (2)
2-56 x 3/8 machine screw (4) Clevis retainer (2)
Pushrod wire, 6-inch (152mm) (2)

Tools and Adhesives

Pin vise Pliers
Diagonal cutters Felt-tipped pen
Hobby knife with #11 blade Thin CA
String Weight
Phillips screwdriver: #1
Drill bit: 1/16-inch (1.5mm), 5/64-inch (2mm)

Note: This section is for both the installation of the
aileron servo (aileron only) and for the flap servo (quad
flap) version of your model. The aileron servo for the
quad flap version will be installed in the next section of
the manual.

 Step 1

Use a hobby knife and #11 blade to remove the covering for
the inboard servo in the bottom of the wing.

22 Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 2

Tie a weight (wheel collar or nut) to a 12-inch (300mm) piece
of string and lower it into the opening for the servo. Tip the
wing up so the weight can be retrieved at the center of the
wing as shown.

 Step 3

Tie the string around the servo lead. Pull the lead through the
wing and out of the hole at the center.

 Step 4

Position the servo in the wing with the servo output shaft
toward the aileron (or flap). Use a felt-tipped pen to mark the
locations for the mounting screws. Use a pin vise and 1/16­inch (1.5mm) drill bit to drill the holes for the screws. Use 2–3
drops of thin CA to harden the surrounding wood.

23Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 5

Secure the servo in the wing using a #1 Phillips screwdriver
and the hardware provided with the servo.

 Step 6

Slide a clevis retainer on a clevis, then thread the clevis
12-turns on a 6-inch (152mm) pushrod wire. Connect the
clevis to the control horn as shown.

 Step 7

Use a pin vise and 5/64-inch (2mm) drill bit to enlarge the
hole in the servo horn that is 1/2-inch (13mm) from the center
of the horn. With the pushrod wire aligned 90-degrees to the
hinge line and the holes in the control horn aligned with the
hinge line, use a felt-tipped pen to mark the control surface for
the control horn screws.

 Step 8

Use a pin vise and a 5/64-inch (2mm) drill bit to drill the two
holes for the control horn screws. Apply 2–3 drops in each
hole to harden the surrounding wood. Secure the control horn
using two 2-56 x 5/8-inch machine screws and a control horn
backplate. Tighten the screws using a #1 Phillips screwdriver.

24 Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 9

With the control surface centered, use a felt-tipped pen to
mark the pushrod where it crosses the hole of the servo horn.
Use pliers to bend the pushrod 90-degrees at the mark.

 Step 10

Use diagonal cutters to trim the pushrod wire 3/8-inch
(9.5mm) above the bend. Secure the pushrod wire to the
servo horn using a pushrod keeper. Use diagonal cutters to
remove any unused servo arm from the servo horn.

Aileron Servo Installation

(Quad Flap Version)

Required Parts

Wing assembly Control horn (2)
Servo with hardware (2) Pushrod keeper (2)
Control horn backplate (2) Clevis (2)
2-56 x 3/8 machine screw (4) Clevis retainer (2)
9-inch (230mm) servo extension (2)
Pushrod wire, 6-inch (152mm) (2)

Tools and Adhesives

Pin vise Pliers
Diagonal cutters Felt-tipped pen
Hobby knife with #11 blade Thin CA
String Weight
Phillips screwdriver: #1
Drill bit: 1/16-inch (1.5mm), 5/64-inch (2mm)

Note: This section details the installation of the aileron

servo when using quad flaps. You can skip this section

if you are not building your model to use quad flaps.

 Step 11

Repeat Steps 1 through 10 to install the remaining servo.

 Step 1

Use string to secure a 9-inch (230mm) servo extension to the
aileron servo.

25Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 2

Use a hobby knife and #11 blade to remove the covering for
the outboard servo in the bottom of the wing.Tie a weight
(wheel collar or nut) to a 12-inch (300mm) piece of string and
lower it into the opening for the servo. Tip the wing up so the
weight can be retrieved at the center of the wing as shown.

 Step 3

Position the servo in the wing with the servo output shaft
to the aileron (or flap). Use a felt-tipped pen to mark the
locations for the mounting screws. Use a pin vise and 1/16­inch (1.5mm) drill bit to drill the holes for the screws. Use 2–3
drops of thin CA to harden the surrounding wood.

 Step 4

Secure the servo in the wing using a #1 Phillips screwdriver
and the hardware provided with the servo.

 Step 5

Slide a clevis retainer on a clevis, then thread the clevis
12-turns on a 6-inch (152mm) pushrod wire. Connect the
clevis to the control horn as shown.

26 Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 6

Use a pin vise and 5/64-inch (2mm) drill bit to enlarge the
hole in the servo horn that is 1/2-inch (13mm) from the center
of the horn. With the pushrod wire aligned 90-degrees to the
hinge line and the holes in the control horn aligned with the
hinge line, use a felt-tipped pen to mark the control surface for
the control horn screws.

 Step 7

Use a pin vise and a 5/64-inch (2mm) drill bit to drill the two
holes for the control horn screws. Apply 2–3 drops in each
hole to harden the surrounding wood. Secure the control horn
using two 2-56 x 5/8-inch machine screws and a control horn
backplate. Tighten the screws using a #1 Phillips screwdriver.

 Step 8

With the control surface centered, use a felt-tipped pen to
mark the pushrod where it crosses the hole of the servo horn.
Use pliers to bend the pushrod 90-degrees at the mark.

27Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 9

Use diagonal cutters to trim the pushrod wire 3/8-inch
(9.5mm) above the bend. Secure the pushrod wire to the
servo horn using a pushrod keeper.

Note: All the servos will face to the wing tips. You will

need to use a reverse servo for one of the flap’s servos
or a computer radio for the flap servos to operate
properly. Use diagonal; cutters to remove the unused
servo arms from the servo horns.

Landing Gear Installation

Required Parts

Fuselage assemble Landing gear
Axle with hardware (2)
Main wheel, 2
8-32 x 5/8-inch machine screw (2)
Wheel collar with setscrew, 1/16-inch
Wheel collar with setscrew, 4mm (4)

Tools and Adhesives

Threadlock Flat file
Hobby knife with #11 blade Ruler
Phillips screwdriver: #2
Hex wrench: 1.5mm (included)
Open-end wrench or socket: 10mm, 1/2-inch

 Step 1

Use a 10mm and 1/2-inch wrench or socket to attach the axle
to the landing gear. File a flat on the axle that is the first 1/4­inch (6mm) and a 1/4-inch (6mm) wide area 1-inch (25mm)
from the end of the axle.

1

/2-inch (63mm) (2)

 Step 10

Repeat Steps 1 throught 9 to install the remaining servo.

28 Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 2

Apply threadlock to the setscrews that will be used in the two
4mm wheel collars. The collars are on either side of the wheel.
Make sure to tighten the setscrews on the flat areas of the axle
made in the previous step.

 Step 3

Repeat Steps 1 and 2 to attach the remaining wheel. When
installing the gear, note the angle of the gear. The angled edge
will be to the rear of the fuselage when installed.

 Step 4

Measure back 65/8-inches (168mm) (tail dragger) or
121/2-inches (317mm) (tricycle gear) and use a hobby knife
to expose the two blind nuts in the fuselage for attaching the
main landing gear.

29Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 5

Apply threadlock to the two 8-32 x 5/8-inch machine screws.
Use the screws and a #2 Phillips screwdriver to attach the
gear. Remember that the angled edge faces to the rear of the

fuselage. You can attach the tail wheel to the tail gear at this

time as well using a 1/16-inch wheel collar and setscrew.

Engine Installation

Required Parts

Fuselage assembly #8 washer (4)
#6 washer (4) 6-32 locknut (4)
Engine Plywood pushrod standoff
Engine mount rail (right and left)
6-32 x 1-inch socket head screw (4)
8-32 x 1-inch socket head screw (4)
Pushrod tube, 13
Pushrod tube, 13
Pushrod, 17

Tools and Adhesives

Drill bit: 9/64-inch (3.5mm), 5/32-inch (4mm)
Drill Nut driver: 5/16-inch
Felt-tipped pen Ruler
Sandpaper Diagonal cutters
Hobby knife with #11 blade Medium CA
Hex wrench: 1/8-inch, 7/64-inch

 Step 1

Use a hobby knife with a #11 blade to remove the covering to
expose the blind nuts and opening for the fuel tank at the front
of the fuselage.

3

/4-inch (350mm) throttle

3

/4-inch (350mm) nose gear steering

1

/2-inch (445mm)

Note: Steps 2 through 4 are for the installation of the
nose gear steering pushrod tube. If you are building the
tail dragger version skip to Step 5.

 Step 2

Use a felt-tipped pen to mark the front of the fuselage as
shown. Use a drill and 5/32-inch (4mm) drill bit to drill a hole
for the nose gear steering pushrod tube.

30 Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 3

Use sandpaper to roughen the first 1-inch (25mm) of each
end on the 13
Also roughen a 1-inch (25mm) wide section that is 6-inches
(152mm) from one end of the tube. Insert the tube in the
hole drilled in the previous step.

3

/4-inch (350mm) nose gear pushrod rod tube.

 Step 4

Position the tube flush with the firewall. Use medium CA to
glue the pushrod tube. Use medium CA to glue the tube at
the firewall and former. Slide the plywood pushrod standoff
on the tube, but do not glue it at this time.

 Step 5

Attach the engine mount rails to the firewall using four 8-32
x 1-inch socket head screws and four #8 washers. Use a 1/8­inch hex wrench to tighten the screws. Leave them slightly
loose so the mount rails can be moved to fit your particular
engine.

31Hangar 9 Ultra Stick 40 ARF Assembly Manual

Note: Step 6 is only necessary if you are installing a
four-stroke engine. Skip to step 7 if you are installing a
two-stroke engine.

 Step 6

Note the direction of the carburetor in relationship to the
engine. It may be necessary to rotate the carburetor on your
engine to match the photo.

 Step 7

Position the engine between the engine mount rails. Use a felt­tipped pen to mark the firewall where the throttle pushrod tube
will be positioned.

 Step 8

Use a drill and 5/32-inch (4mm) drill bit to drill the firewall for
the throttle pushrod tube.

 Step 9

Use sandpaper to roughen the first 1-inch (25mm) of each
end on the 13
Also roughen a 1-inch (25mm) wide section that is 6-inches
(152mm) from one end of the tube.

3

/4-inch (350mm) throttle pushrod rod tube.

 Step 10

Insert the tube into the hole drilled earlier. The two-stroke
will have the tube extended 3/4-inch (19mm) forward of the
firewall, while the four-stroke will be flush with the firewall.

32 Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 11

The tube will pass through the hole in the former in the
fuselage. Trim the tube at the front edge of the servo tray
using diagonal cutters. Use medium CA to glue the tube to the
firewall and former.

 Step 12

Position the engine so the drive washer is 47/8-inches
(124mm) forward of the firewall. Use a pencil to transfer
the locations for the engine mounting screws on the engine
mount rails.

 Step 13

Use a drill and 9/64-inch (3.5mm) drill bit to drill the four
holes to mount the engine. It is suggested to use a drill press
so the holes are straight in the mounting rails.

 Step 14

1

Attach the bend in the 17
carburetor arm on your engine.

/2-inch (445mm) pushrod to the

33Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 15

Secure the engine to the engine mount rails using four 6-32
x 1-inch socket head screws, four 6-32 locknuts and four #6
washers. Use a 7/65-inch hex wrench and 5/16-inch nut driver
to tighten the hardware.

Nose Gear Installation

Required Parts

Fuselage assembly Wheel, 2
Nose gear wire Steering arm
Pushrod connector with hardware
Wheel collar with setscrew, 4mm (4)
Pushrod, 17

1

/2-inch (445mm)

Tools and Adhesives

Flat file Diagonal cutters
Threadlock Ruler
Phillips screwdriver: #2 Medium CA
Hex wrench: 1.5mm (included)

Note: This section covers the installation of the nose
gear for the tricycle version of your aircraft. If you have
built the tail dragger version you can skip this section of
the manual.

 Step 1

File a flat on the axle that is the first 1/4-inch (6mm) and a
1/4-inch (6mm) wide area 1-inch (25mm) from the end of the
axle.

1

/2-inch (63mm)

 Step 2

Attach the nose wheel to the nose gear using two 4mm wheel
collars and setscrews. Make sure to use threadlock on the
setscrews so they don’t vibrate loose.

34 Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 3

1

Connect the bend in the 17
the nose gear steering arm. Use side cutters to remove the
remaining arm as shown.

/2-inch (445mm) pushrod to

 Step 4

Slide the pushrod wire into the tube in the fuselage.

 Step 5

Slide the nose gear through the steering arm and into the
engine mount. Position the gear so the coils do not touch
the bottom of the fuselage. Align the wheel with the fuselage
center line. With the arm positioned 5/8-inch (16mm) forward
of the firewall, tighten the screw. This will leave a mark so a
flat can be filed in the following steps.

 Step 6

Use a felt-tipped pen to mark the nose gear wire against the
inside edges of the engine mount rails. Remove the nose gear
wire and use a flat file to make flat areas for the wheel collars
and steering arm so the gear doesn’t twist on the steering arm
or dislodge during hard landings.

35Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 7

Insert the gear and use two 4mm wheel collars and associated
setscrews to secure the gear in the engine mount. Tighten
the setscrews using a 1.5mm hex wrench. Tighten the
screw in the steering at this time as well using a #2 Phillips
screwdriver. Make sure to use threadlock on all the hardware
so things don’t vibrate loose.

 Step 8

Complete the nose gear installation by centering the nose
gear and rudder servo. Tighten the setscrew in the pushrod
connector using a 1.5mm hex wrench. The plywood pushrod
standoff will naturally rest on the side of the fuselage at this
time. Use medium CA to glue the standoff to the fuselage side.

Fuel Tank Assembly

Required Parts

Fuel tank Stopper
Aluminum tube (short) Aluminum tube (long)
Metal disk (small) Metal disk (large)
Fuel tube, red Fuel tube, green
Fuel tube, pink
3mm x 20mm machine screw

Tools and Adhesives

Phillips screwdriver: #1

 Step 1

Locate the items necessary to assemble the fuel tank.

36 Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 2

Clunk

Vent Line

Top View

Side View

Vent Line (faces top of fuselage)

To Muffler

To Carburetor

Slide the long and short aluminum tubes into the stopper. The
holes for these tubes are pre-made in the stopper. Slide the
metal disk (small) on the back of the stopper, while the metal
disk (large) goes on the front of the stopper.

 Step 3

Use a #1 Phillips screwdriver to start the 3mm x 20mm
machine screw. The screw only needs to be flush with the
metal disk (small) at this time. Carefully bend the longer
aluminum tube up at a 45-degree angle, being careful not to
place a kink in the tube.

 Step 4

Slide the fuel tube (red) on the short aluminum tube. The
clunk will fit on the opposite end of the tube. Insert the
stopper in the tank and make sure the clunk can move freely
inside the tank. If not, shorten the tube slightly so the clunk
does not bind inside the tank.

37Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 5

Once the clunk line has been adjusted, tighten the 3mm x
20mm machine screw with a #1 Phillips screwdriver to secure
the stopper in the tank. Place the pink fuel tube on the vent
line, and the green fuel tube on the tube that goes to the clunk.

Throttle Pushrod Connection and Fuel

Tank Installation

Required Parts

Fuselage assembly Fuel tank assembly
Muffler Balsa block
Spinner assembly Propeller
Servo horn
Pushrod connector with hardware
Foam rubber, 1/4-inch (6mm)

Tools and Adhesives

Drill bit: 5/64-inch (2mm) Pin vise
Phillips screwdriver, #1 Medium CA
Hex wrench: 1.5mm (included)
Box wrench (to fit propeller nut)

 Step 1

Use a pin vise and 5/64-inch (2mm) drill bit to enlarge the
hole that is 1/2-inch (13mm) from the center of the servo
horn.

 Step 2

Attach the pushrod connector to the hole in the servo arm as
shown. Make sure to use threadlock on the nut so it doesn’t
vibrate loose.

38 Hangar 9 Ultra Stick 40 ARF Assembly Manual

 Step 3

With the throttle at the transmitter closed, close the
carburetor. Tighten the setscrew in the pushrod connector to
secure the throttle pushrod. Check the operation of the throttle
using the radio and use the travel at the radio if necessary so
the servo does not bind at full throttle. Remove any unused
arms from the servo horn using diagonal cutters.

 Step 4

Insert the fuel tank in the fuselage. If you have installed the
nose gear, make sure the fuel tubes go on either side of the
nose gear wire so the tank fits fully into the compartment. Use
foam to keep the tank from moving in the fuselage. Glue the
balsa block in place using medium CA to secure the tank.

 Step 5

Attach the muffler to your engine following the instructions
provided with the engine. Connect the green fuel tube to the
carburetor and the pink fuel tube to the muffler. Trim the lines
if necessary so they don’t interfere with the operation of the
engine.

 Step 6

Install the propeller and spinner following the instructions
provided with the engine. Never use an adjustable wrench to
install the propeller nut as it will eventually round the corners
of the nut, making it difficult to tighten or loosen in the future.

39Hangar 9 Ultra Stick 40 ARF Assembly Manual

Final Radio Installation

Required Parts

Fuselage assembly Receiver
Receiver battery Switch harness
Hook and loop tape (not included)
Foam rubber: 1/4-inch (6mm) (not included)

Tools and Adhesives

Hobby knife with #11 blade Phillips screwdriver: #1

 Step 1

Remove the covering from the side of the fuselage using a
hobby knife and #11 blade. Insert the wires from the switch
into the hole.

 Step 2

Cut a piece of foam and place it in the bottom of the fuselage.
The receiver and receiver battery will rest on this foam. Plug
all the servos and extensions into the receiver. Isolate the
battery and receiver using small pieces of foam. Cut a final
piece of foam to fit over the receiver and receiver battery.

 Step 3

Mount the switch in the fuselage using the hardware included
with the switch. The remote receiver is then mounted
underneath the wing mounting plate using hook and loop
tape. Route the wires from the remote receiver so it doesn’t
interfere with the operation of the servos.

40 Hangar 9 Ultra Stick 40 ARF Assembly Manual

Center of Gravity

An important part of preparing the aircraft for flight
is properly balancing the model.

Caution: Do not inadvertently skip this step!

The recommended Center of Gravity (CG) location for the
your model is 31/2- to 4-inches (89mm–101mm) back, or

25% of the chord, from the leading edge of the wing. Mark

the location for the Center of Gravity on the bottom of the
wing next to the fuselage as shown.

When balancing your model, support the plane upright at
the marks made on the top of the wing with your fingers or
a commercially available balancing stand. This is the correct

balance point for your model. You might find you may be

required to add a small amount of weight to either the front
or back of the fuselage to achieve the correct balance.

Control Throws

Note: For information regarding the setup of the quad

flap option, visit horizonhobby .com for details and
programming guidelines.

 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.

Aileron High Rate

1

Up 1

/4-inch 32mm 32 degrees

Down 11/4-inch 32mm 32 degrees

Aileron Low Rate

Up 7/8-inch 22mm 17 degrees
Down 7/8-inch 22mm 17 degrees

Elevator High Rate

7

Up 1

/16-inch 36mm 38 degrees

Down 17/16-inch 36mm 38 degrees

Elevator Low Rate

Up 7/8-inch 22mm 16 degrees
Down 7/8-inch 22mm 16 degrees

Rudder High Rate

Left 3-inch 76mm 35 degrees
Right 3-inch 76mm 35 degrees

Rudder Low Rate

Left 2-inch 51mm 24 degrees
Right 2-inch 51mm 24 degrees

Flaps

1

Up 1

/4-inch 32mm 25 degrees

Down 11/4-inch 32mm 25 degrees

After the first flights, the CG position can be adjusted for
your personal preference.

 Step 4

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

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, shrink the tubing
at all the clevises to keep them from opening
up during ight. Use caution not to damage the
covering around the control horn by applying too
much heat.

41Hangar 9 Ultra Stick 40 ARF Assembly Manual

Quad Flaps

Crow

Ailerons up

Elevator
down
slightly

Flaps
down

Dive Brakes to Landing

Couple elevator to flaps

Tight Loops

Elevator up

Flaps down

The quad flap option allows your Ultra Stick 40 to perform
in ways that are just not possible with the conventional
ailerons-only setup. With the quad flaps and a computer
radio, different wing configurations can be programmed to
extend the flight performance envelope. Plus, it’s a great way
to learn more about your computer radio. Some of these
configurations include:

tips of the wings (washout) help to keep the wing tips from
stalling. Use the rudder only to steer the Ultra Stick during
this maneuver and be careful if you turn off the Crow at
these slow, high angle-of-attack speeds, as there may not be
enough airspeed to fly in the conventional mode.

Anytime Crow is activated, the nose pitches up slightly, so
it’s recommended to mix some down elevator (about 5/8­inch) whenever Crow is used.

ELEVATOR-TO-FLAPS

CROW

First flight profile with Crow

On the first test flights, deploy the Crow at fairly high
altitudes at various throttle settings to get a feel for what
effects Crow has.

You’ll likely notice some reduction in roll control (ailerons)

and the extra drag will drastically slow the airplane, no
matter what throttle position or maneuver you’re doing.
Check to see if the nose pitches up or down and adjust the
elevator mixing value after landing if necessary. Try some
steep descents with Crow and notice that the Ultra Stick 40

What is elevator-to-flaps?

An up-elevator command causes the flaps to go down, while
a down elevator command causes the flaps to go up.

builds up very little speed on the way down. Now go ahead

and shoot some landings with Crow activated. You’ll likely

come up way short on your first few full Crow landings, so
don’t be surprised if you’ve got to add throttle. With a little
practice, you’ll confidently be able to do full-up elevator, tail­first landings.

What is Crow?

Ailerons up, flaps down, elevator down.

On your first attempts to do the Harrier, start high. Deploy
Crow and throttle back to idle; then, start adding up elevator
smoothly. As full-up elevator is reached, increase the throttle

just enough to maintain altitude. You can fly around in the

What does Crow do?

Crow is a very high drag configuration commonly used as

nose-high attitude using rudder only to steer and, with some
practice, you’ll be doing Harrier landings with ease.

dive brakes to prevent the airplane from building up speed
during steep descents/dives. Crow is great for bleeding off
excess airspeed and/or altitude, making short landings from
high altitudes possible. With a little practice, it’s easy to
shoot landings in front of yourself from 500 feet or more
of altitude and just 100 feet downwind from where you’re
standing. Just deploy Crow, push the nose straight down,
and then pull elevator to level at about 10 feet and land right
in front of yourself at a slow walking speed. The drag caused
from Crow will prevent the Ultra Stick from gaining speed on
the down line and, when the airplane is pulled to level, it will
slow to a crawl within a short distance.

Another favorite maneuver that Crow allows is to fly nose
high at very slow speeds with a high angle of attack (nearly
45°). Use full up elevator and jockey the throttle position to
maintain level flight. This maneuver is sometimes called a
Harrier. With crow activated, the Ultra Stick 40 has reduced
tendency to tip stall. This is because the up ailerons at the

42 Hangar 9 Ultra Stick 40 ARF Assembly Manual

What to watch out for

In Crow, the wing tips are effectively washed out due to the
fact that the up ailerons reduce the tendency to tip stall,
making for very stable slow flight when the airplane is
upright. When inverted or when doing outside maneuvers,
this wash-out effectively becomes wash-in (ailerons are
down) and, if you’re not careful, a tip stall can occur. Be
careful when flying inverted or doing outside maneuvers with
Crow deployed as an unexpected tip stall could occur.

Also, when doing high angle-of-attack flight or the Harrier
at very slow speeds, it’s recommended that you keep the
crow turned on. Crow allows the Ultra Stick 40 to actually
fly slower and at higher angles of attack than in the
conventional configuration.

What does elevator-to-flap do?

Elevator-to-flap mixing causes more aggressive pitching
when elevator is applied, making for tighter inside and
outside loops. Using the recommended throws, the Ultra
Stick 40 is capable of very tight 15-foot diameter loops.

First flight profile

It’s a good idea to start up high then turn on the elevator­to-flap mixing to get accustomed to the increased pitch

(elevator) sensitivity. You may find it necessary to increase

the elevator expo to tame the aggressiveness around center.
Now try some full up loops first with the mixing on and then
off to see just how effective elevator-to-flaps can be. With
practice, you can bring these tight loops right down to the
deck and even do tight head-high outside loops.

Things to watch out for

The only real place you may run into trouble here is getting
used to the increased pitch sensitivity and thus over-control
the airplane. Just take it easy, staying high enough that
you can handle making at least two mistakes until you’re
comfortable with the way the Ultra Stick 40 responds. Later
you may want to try differing amounts of flap travel with
elevator to see the effects.

AILERON-TO-FLAPS

Couple ailerons to flaps

Rapid Rolls

Flaps follow aileron

Short Takeoff

Full flaps

Flap down

What is aileron-to-flap?

An aileron input causes the flaps to operate in the same
direction as ailerons (i.e., a right aileron input causes the
right aileron and right flap to go up and the left aileron and
left flap to go down).

What does it do?

Aileron-to-flap mixing gives a more aggressive roll rate for
doing rapid rolls. This mix also increases the rotation rate of
snaps, spins, or any other maneuver that uses ailerons.

First flight profile

Start high and turn on the aileron-to-flap mix. Now do
a couple of full-deflection, high-rate rolls and note the

difference in roll rate. You should see about a 30% increase

in roll speed. Now try a couple of snaps (full up, full right

aileron, and full right rudder). You’ll find snaps and spins

tighter, faster, and more aggressive.

What to watch out for

Be careful not to over-control the ailerons on your first
attempts.

SHORT TAKEOFF FLAPS

What is short takeoff flaps?

The flaps are set to a down position.

What does it do?

Short takeoff flaps create a high-lift wing that allows the
Ultra Stick to do very short takeoffs, in some instances (with
a powerful engine and from asphalt) within the length of the
fuselage.

First flight profile

After you have become comfortable with the flight
characteristics of your Ultra Stick 40, it’s time to give the
short takeoff flaps a try. On the runway drop the flaps, then
when you’re ready, punch the throttle and hold some up
elevator. Be ready for the Ultra Stick to break ground and
head for the skies! It’s important to release up elevator when
the airplane breaks ground, then turn off the flaps to resume
flights. On later flights try holding full up elevator to shorten
the roll-out even more.

What to Watch Out For

On your first flap takeoffs, you may be surprised at just how
quickly the Ultra Stick 40 pops off the ground, especially
with a strong engine. Be ready to release any up elevator
quickly. Also, you’ll notice that the flap causes the nose
to pitch up a bit. We normally don’t recommend mixing
in elevator compensation (a bit of down elevator), as the
intention of short takeoff flaps is to get off the ground in as
short a distance as possible. Just turn off the flap shortly
after takeoff.

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.

43Hangar 9 Ultra Stick 40 ARF Assembly Manual

Safety Do’s and Don’ts for Pilots

Daily Flight Checks

Safety, Precautions and Warnings

• Ensure that 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.

• 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.

 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 that 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.

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.) that 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.) 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.

 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.

44 Hangar 9 Ultra Stick 40 ARF Assembly Manual

Warranty Information

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.

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.

45Hangar 9 Ultra Stick 40 ARF Assembly Manual

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 1/2
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.

United States:

Electronics and engines requiring inspection or repair should
be shipped to the following address:

United Kingdom:

Electronics and engines requiring inspection or repair should
be shipped to the following address:

Horizon Hobby UK

Units 1-4 Ployters Rd

Staple Tye

Harlow, Essex

CM18 7NS

United Kingdom

Please call [phone] or e-mail us at sales@
horizonhobby.co.uk with any questions or concerns
regarding this product or warranty.

Germany:

Electronics and engines requiring inspection or repair should
be shipped to the following address:

Horizon Technischer Service

Hamburger Strasse 10

25335 Elmshorn

Germany

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.

Horizon Service Center

4105 Fieldstone Road

Champaign, Illinois 61822

USA

All other Products requiring warranty inspection or repair
should be shipped to the following address:

Horizon Product Support

4105 Fieldstone Road

Champaign, Illinois 61822

USA

Please call 877-504-0233 or e-mail us at productsupport@
horizonhobby.com with any questions or concerns regarding
this product or warranty.

Please call [phone] or e-mail us at service@
horizonhobby.de with any questions or concerns regarding
this product or warranty.

46 Hangar 9 Ultra Stick 40 ARF Assembly Manual

2009 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. I will 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 radio­control 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.

6. I will not knowingly operate my model aircraft
within three (3) miles of any preexisting flying site
without a frequency-management agreement. A
frequencymanagement agreement may be an allocation
of frequencies for each site, a day-use agreement
between sites, or testing which determines that no
interference exists. A frequency-management agreement
may exist between two or more AMA chartered clubs,
AMA clubs and individual AMA members, or individual
AMA members. Frequency-management agreements,
including an interference test report if the agreement
indicates no interference exists, will be signed by all
parties and copies provided to AMA Headquarters.

7. With the exception of events flown under official AMA
rules, no powered model may be flown outdoors closer
Building and Flying Notes:than 25 feet to any individual,
except for the pilot and located at the flightline.

8. Under no circumstances may a pilot or other person
touch a model aircraft in flight while it is still under
power, except to divert it from striking an individual.

9. Radio-controlled night flying is limited to low­performance model aircraft (less than 100 mph). The
model aircraft must be equipped with a lighting system
which clearly defines the aircraft’s attitude and direction
at all times.

10. The operator of a radio-controlled model aircraft shall
control it during the entire flight, maintaining visual
contact without enhancement other than by corrective
lenses that are prescribed for the pilot. No model aircraft
shall be equipped with devices which allow it to be flown
to a selected location which is beyond the visual range
of the pilot.

47Hangar 9 Ultra Stick 40 ARF Assembly Manual

Horizon Hobby USA

4105 Fieldstone Road

Champaign, Illinois 61822

USA

[phone]

Horizon Hobby UK

Units 1-4 Ployters Rd

Staple Tye

Harlow, Essex

CM18 7NS

Horizon Hobby Deutschland GmbH

Hamburger Strasse 10

25335 Elmshorn

Germany

[phone]

United Kingdom

[phone]

© 2010 Horizon Hobby, Inc.

horizonhobby.com

www.e-fliterc.com

16944 Printed 11/2009