Hangar 9 P-51 PTS Mustang Mk II Assembly Manual

P-51 PTS Mustang Mk II

Assembly Manual

The Spektrum trademark is used with permission

of Bachmann Industries, Inc.

Specications

Wingspan: ......................................................... 58.25 in (1480mm)

Length: ................................................................ 50.4 in (1281mm)

Wing Area: ................................................626 sq in (40.38 sq dm)

..................................................648 sq in (41.81 sq dm) w/droops

Weight: ........................................................... 6.5–7 lb (2.9–3.2 kg)

Radio: ...........................................................4-channel w/5 servos

Engine: .................................................................... Evolution® TPS

Table of Contents

12

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

Using the Manual ...................................................................3

17

1

16

UltraCote® Covering Colors ..................................................3

Before Starting Assembly ......................................................3

Radio and Power Systems Requirements ..............................3

Field Equipment Required ......................................................3

Optional Field Equipment .......................................................3

Additional Required Tools and Adhesives ..............................3

Optional Tools and Adhesives for Flap Installation ................3

FS One ...................................................................................3

13

8

15

Important Information Regarding Warranty Information .......3

Section 1: Charging your Receiver Battery ............................4

Section 2: Installing the Landing Gear ...................................5

Section 3: Installing the Tail Surfaces ....................................6

Section 4: Installing the Propeller ..........................................8

14

6

3

Section 5: Attaching the Wing .............................................10

Section 6: Your Spektrum DX6i Radio System ....................12

11

Section 7: Transmitter Battery Installation ...........................13

Section 8: Digital Trims ........................................................14

Section 9: Low Battery Alarm ..............................................14

Section 10: Trainer ...............................................................14

Section 11: Binding ..............................................................14

Section 12: Mode 2 vs Mode 1 ............................................16

18

7

Section 13: Centering the Control Surfaces .........................17

Section 14: Checking the Control Surface Directions ..........19

Section 15: Checking the Control Throw Amounts ..............21

Section 16: Adjusting the Throttle .......................................22

Section 17: Balancing Your P-51 PTS ..................................23

Section 18: How to Range Test the DX6i .............................24

Section 19: Flight Preparations ............................................25

Section 20: Starting and Adjusting the Evolution Engine .....25

Section 21: Maintaining Your P-51 PTS Mustang ................27

Section 22: Progressing With Your Flying Skills ..................28

Section 23: Adding a Flap Servo ..........................................30

Safety Do’s and Don’ts for Pilots .........................................35

Daily Flight Checks ...............................................................35

Glossary of Terms ................................................................36

Safety, Precautions and Warnings .......................................36

Warranty Information ...........................................................37

Instructions for Disposal of WEEE by

Users in the European Union .........................................38

2008 Official Academy of

Model Aeronautics Safety Code .....................................39

Replacement Parts

1. HAN4426 Fuselage with Hatch and Canopy

2. HAN4427 Left Wing Panel

3. HAN4428 Right Wing Panel

4. HAN4429 Tail Set with Tail Wheel Assembly

5. HAN4430 Fuselage Hatch and Canopy

6. HAN4431 Landing Gear with wheels

7. HAN4432 Anodized Wing Tube

8. HAN4433 Painted Cowl with Engine Cutout

9. HAN4435 Painted Pilot Figure

10. HAN4709 Tail Wheel Set

11. HAN2835 Wing Droops

12. HAN2830 Painted Canopy Frame

13. HAN2839 2.75-inch Spinner 3 Blade

14. EVOE100P Evolution Power System Propeller

15. HAN4437 Exhaust detail with screws

Contents of Kit and Parts Layout

16. EVOE100 Evolution Trainer Power System

17. SPM6600 DX6i 6-Channel without Servos MD2
SPM66001 DX6i 6-Channel without Servos MD1

2 Hangar 9 P-51 PTS Mk II Assembly Manual

18. HAN4438 Wheels 3 1/2-inch 8 spoke

9

5

10

4

11

2

Items Not Shown

HAN2479 Fuel Tank 11 oz
HAN40M Engine Mount
HAN4436 Decals
HAN4434 Pushrod Set
HANR300 RTF Standard Replacement Servo
SPM9530 3-Wire Switch
SPMB1500NM 4.8-volt 1500mAh Ni-MH Battery

A variety of 150mAh wall charger with transmitter adapters
are available. Please verify the correct part number with the
source of your P-51 Mustang.

SPM9526, SPM9526UK, SPM9526EU or SPM9526AU
One additional Amazin’ Grace decal. Not available separately.

*All replacement parts do not come with any radio

gear. These items must be purchased separately.

Using the Manual

This manual is divided into sections to help make assembly
easier to understand, and to provide breaks between each
major section. In addition, check boxes have been placed
next to each step to keep track of each step completed.

Steps with a single box () are performed once, while steps
with two boxes () indicate that the step will require

repeating, such as for a right or left wing panel, two servos,
etc. Remember to take your time and follow the directions.

You will also find an included instructional DVD that will
guide you through the preparation of your model and
compliments this manual. It is recommended to watch
the instructional DVD before beginning the assembly of
your model.

UltraCote® Covering Colors

• Black HANU874

• White HANU870

• Silver HANU881

• Cub Yellow HANU884

• True Red HANU866

• Olive Drab HANU904

Before Starting Assembly

Radio and Power

Systems Requirements

Spektrum Radio System

• DX6i (included)

• SPM6600 DX6i 6-Channel w/o Servos MD2

• SPM66001 DX6i 6-Channel w/o Servos MD1

Power System

• Evolution Trainer Power System (EVOE100)
Red spinner available separately (included)

Optional for Flap System

• JR SPORT ST-47 Standard Servo (JSP20050) (2)

• Y-Harness, Heavy Duty (JRPA135)

Field Equipment Required

• Fuel (15% recommended)

• Propeller (EVOE100P) included

• Long Reach Glow Plug Wrench (HAN2510)

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

• 2-Cycle Sport Plug (EVOGP1)

• Manual Fuel Pump (HAN118)

Optional Tools and Adhesives

for Flap Installation

• Pencil • 6-minute epoxy

• Drill • Sandpaper

• Phillips screwdriver: #1 • Thin CA

• Mixing cups • Mixing sticks

• Hobby knife w/#11 blade • Side cutters

• Drill bit: 1/16-inch (1.5mm)

FS One

With FS One (HANS2008) you get more than photorealistic
fields, gorgeous skies and realistic-looking aircraft. You get
incredibly advanced aerodynamic modeling that simulates
every possible aspect of real-world flight.

The first Hangar Pack (HANS4010) will add even more
aircraft to FS One. This latest edition includes ten new planes
and helis from your favorite brands, including Hangar 9,
E-flite and Align. You’ll be able to fly aircraft that are only
available on FS One such as the T-REX, Blade CX2, Blade CP
Pro, Hangar 9 P-51 and F-22 PTS. And as always, with the
Hangar Pack, you still get all the same great features that
you did with the original aircraft.

Before beginning the assembly of your P-51 PTS Mustang,
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

Optional Field Equipment

• 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

Additional Required

Tools and Adhesives

• Phillips screwdriver: #1, #2 • Pencil

• Felt-tipped pen • Box wrench: 7/16-inch

• Flat blade screwdriver • Nut driver: 7/32-inch

• Hex wrench: 3/32-inch, 2.5mm

The Spektrum trademark is used with permission

of Bachmann Industries, Inc.

HANS2008 HANS4010

Important Information

Regarding Warranty Information

Please read our Warranty and Liability Limitations section on
Page 32 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.

3Hangar 9 P-51 PTS Mk II Assembly Manual

Section 1:

Charging your Receiver Battery

Items required

• Fuselage assembly • Charger

Before flying your P-51 Mustang PTS, you will need to
charge the receiver battery for 12–14 hours prior to use.

Although the radio system may work as shipped, the receiver
battery is not fully charged and flying your model without
charging will result in the loss of communication between
the transmitter and receiver. This situation will cause the loss
of your aircraft.

You can elect to charge the batteries at this time, or begin
the assembly of your aircraft. Please make sure to take the
time to fully charge the batteries before checking the control
throws and before every flying session.

 Step 1

Remove the canopy from the fuselage by sliding the canopy
hatch pin forward and lifting up the rear of the canopy hatch.
The hatch has tabs at the front that insert into the fuselage to
keep the front of the hatch down in flight.

 Step 3

Connect the battery charger to the lead exiting the switch
harness labeled CHARGE. Allow the charger to charge the
battery for 10–12 hours before flying your model.

 Step 2

Plug the battery charger into a suitable outlet or power strip
to power the charger.

Hint: Prior to flying your model, connect the charger and
charge the receiver pack. This routine will guarantee a
charge on the receiver battery for your flying session. Use
care not to overcharge the receiver pack by leaving the
charger on longer than the recommended 10–12 hours.

Note: A transmitter adapter has been included and
attached to the charger as shipped. This adapter will
need to be removed before charging the receiver
battery.

4 Hangar 9 P-51 PTS Mk II Assembly Manual

Section 2:

Installing the Landing Gear

Items Required

• Wing panel (left and right) • Landing gear strap (4)

• Main landing gear (left and right)

• #4 x 1/2-inch sheet metal screw (8)

• Phillips screwdriver: #2

 Step 1

Locate the left landing gear strut. Slide the strut into
position on the bottom of the wing. The wheel will be
towards the leading edge (front) of the wing when installed
correctly. Press the landing gear into the groove of the
landing gear mount.

  Step 2

Locate two landing gear straps and four #4 x 1/2-inch sheet
metal screws. Use a #2 Phillips screwdriver to attach the

landing gear straps using the screws. Tighten the landing
gear straps until they pull the landing gear into the groove,
flush with the bottom of the wing.

Hint: Starting the screw partially in the landing gear
strap will help in getting the screw started in the pre­drilled holes near the landing gear.

5Hangar 9 P-51 PTS Mk II Assembly Manual

Section 3:

Installing the Tail Surfaces

Items Required

• Fuselage • Stabilizer/elevator

• Nut driver: 7/32-inch or adjustable wrench

 Step 1

Locate the stabilizer/elevator assembly. Locate the fuselage
assembly and use a 7/32-inch nut driver to remove the nuts
and washers from the threaded rods on the bottom of the
fuselage.

 Step 2

Remove the clevises from the control horn. To remove the
clevis, carefully slide the clevis retainer off of the clevis so
it can be opened. Use a flat blade screwdriver to open the
clevis and remove it from the control horn. Carefully remove
the rudder/fin assembly from the fuselage.

Note: Use care not to over-tighten the screws and
damage the landing gear mount.

 Step 3

Repeat Steps 1 and 2 to install the right landing gear strut.

6 Hangar 9 P-51 PTS Mk II Assembly Manual

Note: The fuselage fairing is not glued in place. Make
sure to keep the fairing in position when installing the
stabilizer. The photo below illustrates the fairing being
separated from the vertical fin for clarity of the part.

 Step 3

Position the stabilizer/elevator assembly so the control horn
will face down, away from the fin. The threaded rods from
the rudder/fin assembly will slide into the two holes in the
stabilizer. The fuselage fairing is in position on the fin as it is
installed on the fuselage for shipping.

 Step 4

Slide the stabilizer/fin assembly back into position on the
fuselage. The stabilizer will rest tightly against the fuselage,
and the fin will rest snug against the top of the stabilizer.

 Step 5

Thread the washers and nuts back on the rods. Tighten the
nuts snugly against the bottom of the fuselage using a nut
driver or an adjustable wrench. Do not over-tighten the nuts.

Note: The nuts should be sufficiently tight enough to
not allow for rotation of the stab under slight force.
Avoid over-tightening the nuts and damaging the
fuselage.

7Hangar 9 P-51 PTS Mk II Assembly Manual

Section 4:

Installing the Propeller

Items required

• Fuselage assembly • Propeller

• Spinner

• 3mm x 16mm sheet metal socket head screw (3)

• Exhaust stack, right and left

• #2 x 5/16-inch wood screw (4)

• Box wrench: 7/16-inch

• Hex driver: 2.5mm

• Phillips screwdriver: #1

 Step 1

Remove the shipping protector, propeller nut and washer
from the engine.

 Step 2

Check to make sure the flywheel is properly positioned on
the engine crankshaft. Slide the spinner backplate onto the
engine shaft, and then slide the propeller into position.

8 Hangar 9 P-51 PTS Mk II Assembly Manual

 Step 3

Slide the washer and thread the nut onto the engine shaft.
Rotate the propeller clockwise so it is resting against the
lugs of the spinner backplate. Use a 7/16-inch box end
wrench to tighten the propeller nut. Never use pliers, as the
nut will not be tight enough, and could come loose.

 Step 4

Locate the three #4 x 5/8-inch sheet metal socket head

screws. Position the spinner cone onto the spinner
backplate, making sure it keys into the backplate. Use the
screws and a 2.5mm or 3/32-inch ball driver or hex wrench
to secure the spinner cone to the backplate.

Note: It is suggested to read the engine instructions
included with your P-51 PTS Mustang at this time to
learn more on the care and operation of your
Evolution engine.

9Hangar 9 P-51 PTS Mk II Assembly Manual

 Step 5

Use a #1 Phillips screwdriver to attach the exhaust stacks to
the fuselage using the four #2 x 5/16-inch wood screws.

Note: The exhaust stack for the right side of the
model is shorter than the left. This is necessary to
clear the muffler.

Hint: Starting the screw partially in the exhaust stack
will help in getting the screw started in the pre-drilled
holes in the cowling and fuselage.

Section 5:

Attaching the Wing

Items required

• Wing panel (right and left) • Hex wrench: 3/32-inch

• Fuselage assembly • Wing tube

• #4 washer (2) • #4 lock washer (2)

• 4-40 x 1-inch socket head screw (2)

 Step 1

Locate the aluminum wing tube. Slide the wing tube into the
wing tube socket in one of the wing panels. There is a stop
inside the wing, so don’t force the tube further into the wing
than it will easily slide.

10 Hangar 9 P-51 PTS Mk II Assembly Manual

 Step 2

Locate the aileron Y-harness inside the fuselage. Make sure
one end of the harness exits the right side of the fuselage
and one exits the left side of the fuselage.

 Step 3

Slide the wing tube and wing panel into the socket in the
fuselage. Plug the lead for the aileron servo in the wing
into the extension extending out of the fuselage. Guide the
alignment pins in the wing into the holes in the fuselage then
slide tight against the fuselage.

 Step 4

Locate the 4-40 x 1-inch socket head screw, #4 washer and
#4 lock washer. Slide the lock washer onto the screw, then

slide the washer onto the screw.

11Hangar 9 P-51 PTS Mk II Assembly Manual

 Step 5

Antenna

Rudder Dual Rate

Mix/Throttle Hold

Aileron Dual Rate

Throttle Cut

Roller

Aileron/Elevator

Stick

Elevator Trim

Aileron Trim

On/Off Switch

Rudder Trim

Throttle Trim

Throttle/Rudder

Stick

Flap/Gyro

Elevator Dual Rate

Gear/Flight Mode

Trainer/Bind

Handle

Mode 2 Transmitter

Use the screws and a 3/32-inch ball driver or hex wrench to
secure the wing to the fuselage. If the screw does not go in
easily, you may need to double-check that the wing is tight
against the fuselage.

 Step 6

You can now slide the remaining wing panel onto the wing
tube. Plug the aileron extension from the aileron servo
into the Y-harness in the fuselage then slide the wing tight
against the fuselage. Repeat Step 5 and 6 to secure the wing
panel to the fuselage.

Section 6:

Your Spektrum DX6i Radio System

Use the following image to familiarize yourself with the
Spektrum DX6i transmitter. For more information you should
always refer to the User Guide included with this model that
references the transmitter.

12 Hangar 9 P-51 PTS Mk II Assembly Manual

Antenna

Rudder Dual Rate

Mix/Throttle Hold

Aileron Dual Rate

Throttle Cut

Roller

Aileron/Throttle

Stick

ThrottleTrim

Aileron Trim

On/Off Switch

Rudder Trim

Elevator Trim

Elevator/Rudder

Stick

Flap/Gyro

Elevator Dual Rate

Gear/Flight Mode

Trainer/Bind

Handle

Mode 1 Transmitter

Your Spektrum DX6i radio will come from the factory pre­programmed with the basic setup for your P-51 Mustang
PTS. You should not need to adjust any of the programming
of the radio before flying.

Section 7:

Transmitter Battery Installation

The DX6i transmitter requires 4 AA batteries:

Remove the battery door and install the included 4 AA
batteries, noting the polarity of each corresponds with the
diagram in the battery holder. Replace the battery door.

Optional Ni-Cd or Ni-MH 1.2 volt AA rechargeable batteries
(Spektrum 1500mAh Ni-MH AA (4 Pack) (SPM9525)) can
also be used. A charge jack is located on the left side of
the transmitter for convenient recharging. You will need to
connect the transmitter adapter to the charger before it can
be plugged into the transmitter charge jack.

13Hangar 9 P-51 PTS Mk II Assembly Manual

Section 8:

Re du c e ph o to t o 1 3. 5%

P-51 PTS

5.8V

MDL1

DN12:34

Throttle Trim Elevator Trim

Rudder Trim Aileron Trim

Digital Trims

The DX6i employs digital trim levers on aileron, elevator,
throttle, and rudder. The ADT (Advanced Digital Trim)
feature is designed to automatically store the selected trim
values for each model. When a different model is selected,
the previously stored trim positions for that model are
automatically returned to their previous settings.

Visual trim positions are displayed on the main screen.
The trims feature dual speed scrolling. Holding the trim
lever for an extended time will cause the trim rate of
change to increase.

Section 9: Low Battery Alarm

When the battery voltage drops below 4.7 volts an alarm will
sound and the voltage LEDs will flash. If flying you should
land immediately.

Section 10:

Trainer

The DX6i offers a Trainer function that allows the transmitter
to operate as a master or slave. The trainer switch is located
on the back left of the transmitter. When using the trainer
function, plug the trainer cord (SPM6805) into the trainer
port in both the master (controlling) and the slave (training)
transmitters. The master transmitter must have the power
turned on and the slave transmitter must have the power
turned off.

Note: The DX6i trainer system is compatible with all JR

and Spektrum transmitters.

MASTER

The DX6i transmitter can be used as a master but the slave
transmitter must have the same programming (i.e. reverse
switch positions) as the master.

Section 11:

Binding

Binding is the process of teaching the receiver the specific
code of the transmitter so it will connect to that specific
transmitter which it is bound to. The transmitter and receiver
for your P-51 PTS Mustang have already been bound, but
this section has been included as reference. You will not
need to bind the transmitter and receiver for your P-51 PTS
Mustang.

Items required

• Phillips screwdriver: #1 • Bind plug

 Step 1

Use a #1 Phillips screwdriver to remove the four screws

that hold the receiver hatch in the fuselage. Slide the hatch
rearward and turn it slightly so it can be removed from the
fuselage.

SLAVE

When using the DX6i transmitter as a slave with another
DX6i, it’s necessary to match all the reverse switch positions.

14 Hangar 9 P-51 PTS Mk II Assembly Manual

 Step 3

Unplug the lead from the switch harness that connects to
the battery/bind port of the receiver. Plug the lead from the
switch harness into the aileron lead coming from the
receiver at this time.

 Step 4

Plug the bind plug included with the radio system into the
battery/bind port of the receiver.

 Step 5

Turn on the receiver switch. Note that the LEDs on both
receivers should be flashing, indicating that the receiver is
ready to bind.

 Step 2

Remove the foam padding to expose the main receiver.

15Hangar 9 P-51 PTS Mk II Assembly Manual

 Step 6

Aileron/ElevatorThrottle/Rudder

Mode 2 Transmitter

Mode 1 Transmitter

Aileron/ThrottleElevator/Rudder

Establish the desired fail-safe stick positions: normally low
throttle and flight controls neutral.

 Step 7

Pull and hold the trainer switch on the top of the transmitter
while turning on the power switch. Within a few seconds the
system should connect. The LEDs on the receivers should
go solid, indicating the system has connected. The Trainer
switch can now be released.

 Step 8

Remove the bind plug from the receiver before turning off
the receiver and store it in a convenient place. Turn off the
receiver and transmitter to complete the procedure.

 Step 9

Unplug the switch harness and aileron extension leads. Plug
the lead from the switch harness back into the battery/bind
port of the receiver. Return the main receiver to its locations,
making sure both the antenna on the receiver are positioned
into the slots cutout in the foam. insert the foam and secure

the receiver hatch with the four screws and a #1 Phillips

screwdriver.

Section 12:

Mode 2 vs Mode 1

Your P-51 Mustang PTS is offered with either a Mode 1 or
Mode 2 transmitter. The difference between the two are the
operation of the controls in relationship to the control sticks.

A Mode 2 transmitter will have the throttle and rudder
controls located on the left stick, and the aileron and elevator
controls located on the right stick.

A Mode 1 transmitter will have the elevator and rudder
controls located on the left stick, and the aileron and throttle
controls located on the right stick.

Because there are two transmitter options, they will both be
shown in the following sections for checking and adjusting
your control surfaces. Make sure to reference the correct
“Mode” transmitter in the following sections of the manual.

 Step 10

After you’ve programmed your model, it’s always a good
idea to rebind the system so the true low throttle and neutral
control surface positions are programmed.

16 Hangar 9 P-51 PTS Mk II Assembly Manual

Section 13:

Aileron

Trim

Mode 2 Transmitter

Aileron

Trim

Mode 1 Transmitter

Centering the Control Surfaces

Tools required

• Flat blade screwdriver

How to remove the clevis from a control surface

If may be necessary to remove the clevises from the control
horns to center the control surfaces. To remove the clevis,
carefully slide the clevis retainer off of the clevis so it can be
opened. Use a flat blade screwdriver to open the clevis and
remove it from the control horn.

Ailerons

Remove the packing foam from the aileron control horns.
Check to make sure the clevis is located in the outer hole
of the control horn. If not, slide the clevis retainer forward,
disconnect the clevis, connect it in the correct location.

Turn on the radio system. Center the trim lever for the
ailerons on the transmitter. If not aligned, remove the clevis
from the control horn and thread in or out as needed to
allow the aileron to align with the wing tip. Reinstall the
clevis to the outer hole of the control horn and then slide the
clevis. Slide the clevis retainer onto the clevis to secure its
location.

17Hangar 9 P-51 PTS Mk II Assembly Manual

Elevator

Elevator Trim

Mode 2 Transmitter

Mode 1 Transmitter

Elevator Trim

Rudder

Trim

Mode 2 Transmitter

Connect the elevator clevis to the outside hole on the
elevator control horn.

Rudder

Connect the rudder clevis to the center hole on the rudder
control horn.

With the radio system on, check to be sure the elevator is
aligned to the stabilizer. Center the trim lever for the elevator
on the transmitter. If the elevator and stabilizer are not
aligned, remove the clevis and thread the clevis in or out
until the elevator is aligned with the stabilizer. Attach the
clevis to the outside hole of the elevator control horn. Slide
the clevis retainer onto the clevis to secure its location.

With the radio system on, check to be sure the rudder is
aligned to the fin. Center the trim lever for the rudder on the
transmitter. If the rudder and fin are not aligned, remove
the clevis and thread the clevis in or out until the rudder is
aligned with the fin. Attach the clevis to the center hole of
the rudder control horn. Slide the clevis retainer onto the
clevis to secure its location.

18 Hangar 9 P-51 PTS Mk II Assembly Manual

Mode 1 Transmitter

Rudder

Trim

Section 14:

Mode 2 Transmitter

Mode 1 Transmitter

Mode 2 Transmitter

Mode 1 Transmitter

Checking the Control

Surface Directions

RIGHT AILERON

Turn on the transmitter, then the receiver. Move the aileron
control stick to the right, which is the input for a right turn.
The right aileron will move up, and the left aileron will move
down. If not, check the radio instructions on how to reverse
the direction electronically at the transmitter.

LEFT AILERON

With the radio system still on, move the aileron control stick
to the left, which is the input for a left turn. The left aileron
will move up, and the right aileron will move down. If not,
check the radio instructions on how to reverse the direction
electronically at the transmitter.

19Hangar 9 P-51 PTS Mk II Assembly Manual

UP ELEVATOR

Mode 2 Transmitter

Mode 1 Transmitter

Mode 2 Transmitter

Mode 1 Transmitter

Mode 2 Transmitter

Mode 1 Transmitter

DOWN ELEVATOR

RIGHT RUDDER

With the radio system still on, pull back on the elevator
control stick to give an up elevator input. The elevator should
move up from center. If not, check the radio instructions on
how to reverse the direction electronically at the transmitter.

With the radio system still on, push forward on the elevator
control stick to give a down elevator input. The elevator
should move down from center. If not, check the radio
instructions on how to reverse the direction electronically
at the transmitter.

The final control surface direction to check is the rudder.
With the radio system on, move the rudder control stick
to the right, this will make the plane turn right. The rudder
should deflect to the right as well. If not, check the radio
instructions on how to reverse the direction electronically at
the transmitter.

20 Hangar 9 P-51 PTS Mk II Assembly Manual

LEFT RUDDER

Mode 2 Transmitter

Mode 1 Transmitter

High Rate

Low Rate

Move the rudder control stick to the left, this will make the
plane turn left. The rudder should deflect to the left as well.
If not, check the radio instructions on how to reverse the
direction electronically at the transmitter.

Section 15:

Checking the Control Throw Amounts

The Dual Rate switch allows for aileron, elevator and rudder
rates. When the Dual Rate switch is in the upper position,

100% travel is achieved on the aileron, elevator or rudder

channel. When the switch is in the lower position, a reduced
amount of travel is achieved on the aileron, elevator or
rudder channel. This is useful allowing the aircraft to have a
high control rate (switch in the “HI” position) for aggressive
maneuvers and a low control rate (switch in “LO” position)
for smooth, precise maneuvers. The switches are labeled to
their particular function.

AILERON LOW RATE

ELEVATOR HIGH RATE

After checking that the controls are moving in the correct
directions, the amount of the control movement must be
checked. By moving the control stick of each surface to its
full deflection, you will measure the amount the surface
has moved. By holding a ruler next to the surface and
establishing a reference, use the radio to make the surface
move and compare the measurements to those shown.

AILERON HIGH RATE

ELEVATOR LOW RATE

21Hangar 9 P-51 PTS Mk II Assembly Manual

RUDDER HIGH RATE

Mode 2 Transmitter

Mode 1 Transmitter

Note: If you can borrow a throw gauge that measures
in degrees, the amounts are:

Section 16:

Adjusting the Throttle

RUDDER LOW RATE

• Elevator: 14 degrees instead of 1/2-inch (13mm)

• Rudder: 14 degrees instead of 7/8-inch (22mm)

• Ailerons: 12 degrees instead of 5/16-inch (8mm)

If the throws of the control surfaces are not moving the
amounts as described, you may need to change the Travel
Adjustment setting in the radio. To do so, read the section in
the radio manual on programming.

Please note where the dimensions are measured from the
following points:

The ailerons are measured as close to the wing tip as
possible.

The elevators are measured at the widest point, which is
close to the fuselage.

The rudder is measured at the bottom, which is the widest
point of the rudder.

IMPORTANT

You will need to set the flap position based

on your skill level before flying your P-51 PTS Mustang.

The positioning of the flaps is described in

Section 20: Progressing With Your Flying Skills,

located on Page 25 of this manual.

With the radio system on, move the trim lever and throttle
control stick towards the bottom of the transmitter. Look into
the carburetor to check that the barrel is closed.

Hint: Place your ruler on a solid surface, rather than
holding it in the air, to take measurements. This will
guarantee your ruler is not moving. If the ruler is
moving you will get inaccurate readings.

22 Hangar 9 P-51 PTS Mk II Assembly Manual

Move the trim lever up towards the top of the transmitter.
The barrel in the carburetor should have an opening of
around 1/16-inch (1.5mm).

Mode 2 Transmitter

Mode 1 Transmitter

Mode 2 Transmitter

Mode 1 Transmitter

Section 17:

Balancing Your P-51 PTS

In order for your P-51 PTS Mustang to fly correctly, you
will need to check the balance of the plane. 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 P-51 PTS Mustang is to
mark the location for the balance point. Measure back

3

/4-inch (95mm) against the fuselage to the very front

3
edge of the wing, which is where the wing plugs into the
fuselage. Mark the location on both sides of the fuselage
using a felt-tipped pen to mark the balance location.

Move the throttle stick towards the top of the transmitter.
The carburetor will now be in the fully open position.

If the throttle is not operating as described, you may
need to change the Travel Adjustment setting in the radio.
To do so, read the section in the radio manual on
programming the radio.

Note: Once all the radio adjustments are complete,
remember to turn off both the receiver and the transmitter.

Lifting the Model and Observations

The P-51 PTS Mustang is balanced using either your fingers
or a balancing stand. The stand in the photo was made from
a dowel rod and a flat piece of wood. The dowel was cut
down and holes drilled in the wood, then the dowel plugged
into the wood. Use pencil erasers to prevent the ends of the
dowel from damaging your wing. 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, self stick
weights must be added to correct any balancing problems.

23Hangar 9 P-51 PTS Mk II Assembly Manual

Balanced Correctly

Redu ce photo to 13. 5%

RANGE CHECK

CHECK INH

List

Redu ce photo to 13. 5%

RANGE CHECK

CHECK ACT

List

Adding Weights to Correct the Balance

Due to manufacturing differences, it is possible that the
P-51 PTS Mustang may not be balanced properly. Weights
can be added to either the tail or the nose of your P-51 PTS
Mustang if it does not balance properly. Stick-on weights 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.

Section 18:

How to Range Test the DX6i

Before each flying session, and especially with a new
model, it is important to perform a range check. The DX6i
incorporates a range testing system which, when placed
in the RANGE CHECK program and the trainer switch is
activated and held, reduces the output power, allowing a
range check.

To enter the Range Check mode, hold the roller down then
turn on the power switch. Use the roller to scroll to Range
Check then press the roller to enter the Range Check mode.
Pulling the trainer switch forward will reduce the output
power of the transmitter to properly perform the range check
of your model.

Nose Heavy – Add Weight to Tail

Note: The balance point of your P-51 PTS Mustang
can vary 1/4-inch (6mm) forward or rearward without
causing any problems. If your plane is only slightly out

Tail Heavy – Add Weight to Nose

24 Hangar 9 P-51 PTS Mk II Assembly Manual

of balance, try placing the balancing stand towards the
nose or tail by this 1/4-inch (6mm) and recheck the
balance. If it looks good and sits level, then you’re good
to go!

RANGE TESTING THE DX6I

30 paces (90 feet/28 meters)

 Step 1

With the model resting on the ground, stand 30 paces
(approx. 90 feet or 28 meters) away from the model.

 Step 2

Face the model with the transmitter in your normal flying
position. Place the transmitter in the range check screen and
pull and hold the trainer switch on the top of the transmitter.
This causes reduced power output from the transmitter.

Section 19:

Flight Preparations

Flight preparations must be checked each time you travel
to the flying field. Because the P-51 PTS Mustang 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 Spektrum radio system, follow the guidelines
for use of DSM radio systems at your particular field.

Section 20:

Starting and Adjusting

the Evolution Engine

FUEL

The Evolution Engine comes adjusted from the factory. We
recommend using high quality Cool Power Omega or Power

Master fuels containing 10 to 15% Nitro. The Evolution

Engine has been test run using these fuels. If another brand
of fuel is used, it may be necessary to slightly adjust the
needle valves to compensate for the differences in fuel.

 Step 3

You should have total control of the model with the trainer
switch pulled at 30 paces (90 feet).

 Step 4

If control issues exist, call your local service center for
further assistance. Their contact information is located in the
warranty section of this manual.

 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 the P-51 PTS Mustang

Fill the fuel tank with the proper fuel. Fill the tank by
connecting the fuel pump to the line going to the needle
valve. 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 and 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.

GLOW PLUG

The Evolution Engine comes with a specially designed
“Super Plug” that prevents idle and transition flameouts. The
plug’s unique shape directs incoming fuel/air mixture away
from the plug element. When replacing the plug, be sure to
replace it with another Evolution Super Plug (EVOGP1).

STARTING THE ENGINE

 Step 1

Fill the tank with the above-mentioned 10 or 15% fuel.

 Step 2

Reattach the fuel lines, making sure the vent and clunk line
are attached to the fuel nipple and the muffler pressure nipple.

Caution: Do not attach the glow driver yet.

 Step 3

With the throttle fully open, place your thumb over the
carburetor and rotate the prop clock-wise through six
complete revolutions, thus priming the engine.

25Hangar 9 P-51 PTS Mk II Assembly Manual

 Step 4

Low-Speed Needle AdjustmentHigh-Speed Needle Adjustment

The needle valves come preset from the factory. Extreme conditions

may require some minor adjustments. Note that the needle adjustment

range is limited, preventing adjustment beyond the practical range.

Close the throttle to the idle position and have a helper hold
your airplane.

 Step 5

Attach the glow driver.

 Step 6

Turn the engine over using an electric starter. The engine
should fire within seconds of applying the starter.

If your engine starts from the above procedure, but won’t
reliably continue to run with the glow driver removed, follow
the steps below.

STEP 2: LOW-SPEED NEEDLE ADJUSTMENT

The low-speed or idle needle valve, included with the
SetRight™ assembly, is preadjusted at the factory for best
performance. It may be necessary to fine-tune the low-speed
adjustment using the following procedure:

 Step 1

Start the engine and let it warm up, prior to attempting any
adjustments. Make sure that the high-speed adjustment
process is complete before attempting to adjust the low­speed needle valve.

 Step 7

Allow the engine to idle for 30 seconds. Adjust the throttle
trim if necessary to achieve a constant slow idle.

 Step 8

With the glow driver still attached and a helper securely
holding the airplane, advance the throttle smoothly to full
throttle. The engine will transition to full rpm.

 Step 9

Reduce the throttle to idle and remove the glow driver.

NEEDLE LIMITERS

In some conditions: Due to high altitudes, extreme
temperatures, etc., it may be necessary to slightly adjust the
idle and high-speed needle valves. The high- and low-speed
needles have limiters that prevent over-adjustment.

STEP 1: HIGH-SPEED NEEDLE ADJUSTMENT

With the engine running, advance the throttle to full throttle
while a helper securely holds your airplane. Carefully pinch
and release the fuel line to temporarily restrict the fuel flow.

Caution: Do not reach over the propeller while the
engine is running.

Correct: If the high-speed needle adjustment is correct,
the engine will increase rpm slightly (about 300 rpm) and
then die.

Too Rich: If the engine increases a lot (1,000 rpm or
greater), the high-speed needle is too rich and must be
leaned or turned clockwise.

Too Lean: If the engine doesn’t increase rpm and simply
dies, the high-speed needle is lean and must be richened or
turned counterclockwise.

 Step 2

Close the throttle slowly. You will adjust the low-speed
needle setting by rotating the SetRight adjustment bar
clockwise to lean the engine and counterclockwise to
richen the engine.

Caution: Do not attempt to adjust the low-speed
needle valve while the engine is running.

 Step 3

The fuel mixture should be adjusted as follows: The fuel
mixture is too rich if, when opening the throttle rapidly, the
engine emits smoke and “stutters” or “stumbles.” Correct
this by rotating the SetRight adjustment bar clockwise in
small increments. Continue this process until the engine
transitions smoothly from low rpm idle to high rpm without
hesitation upon opening the throttle rapidly.

 Step 4

The fuel mixture may be too lean if the engine stops at the
lowest idle position or it stops when the throttle is rapidly
opened from the idle position. Correct this by rotating
the SetRight adjustment bar counterclockwise in small
increments until the engine transitions smoothly without
hesitation upon opening the throttle rapidly from idle.

26 Hangar 9 P-51 PTS Mk II Assembly Manual

TROUBLESHOOTING GUIDE

Engine Won’t Fire

• Glow starter not charged

- Charge glow starter

• Glow plug burnt out

- Replace glow plug

• No fuel is getting to the carburetor

- Check tank, fuel lines reversed

• The starter is reversed

- Reverse the polarity on the starter cables

Engine Quits Repeatedly

• Needles need adjusting

- See adjustment procedure

• Bad or old fuel

- Replace with fresh fuel

• Worn out glow plug

- Replace with new EVOGP1 2 & 4 Stroke Super Plug

Engine Runs Inconsistently

• Hole in fuel line

- Replace fuel line

• Bad or old fuel

- Replace with fresh fuel

ENGINE MAINTENANCE

After each flying session:

 Step 1

Fully drain the fuel from the tank.

 Step 2

Start the engine and run it until the fuel is completely run out
of the engine.

 Step 3

Try starting the engine three more times or until it will no
longer fire. This gets all the fuel out of the engine.

At the end of each flying session, several drops (about 10)
of after run oil (Evolution Engine’s Blue Block Rust Inhibitor,
EVOX1000) should be applied into the carburetor, and the
engine should be turned over for a few seconds with the
starter. This will prevent rust and corrosion.

Section 21:

Maintaining Your P-51 PTS Mustang

The following is a check list that you should follow
every time you have completed a flying session with your
P-51 Mustang PTS. Doing so will keep your aircraft in the
best flying condition.

Clean Up

After a long flying session with your P-51 PTS Mustang, you
will want to clean it up before loading it into your vehicle
to head home. Use a cleaner such as Windex or 409 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 that is showing signs of wear or is 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.

27Hangar 9 P-51 PTS Mk II Assembly Manual

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.

Check the Muffler Bolts

Use a 2.5mm hex wrench to make sure the bolts holding the
muffler onto the engine are tight and have not vibrated loose
during flight.

Section 22:

Progressing With Your Flying Skills

Required Tools and Adhesives

• Flat blade screwdriver

The P-51 PTS Mustang is a special trainer plane in that it will
allow you to go from learning the basics of flight all the way
up to performing aerobatics without upgrading or purchasing
a new plane. As you learn to fly and become ready for a little
more challenge, the P-51 PTS Mustang will grow with you.

How to Center the Flaps

The clevis will need to be connected to the center hole of
the flap control horn. If it is not, you will need to remove the
clevis and correct its position. To remove the clevis, carefully
slide the clevis retainer off of the clevis so it can be opened.
Use a flat blade screwdriver to open the clevis and remove it
from the control horn.

Thread the clevis in or out until the flap is aligned with the
inboard section of the wing. Attach the clevis to the control
horn, then slide the clevis retainer onto the clevis to secure
its location.

Check the Engine Mount Bolts

Remove the spinner and propeller from the engine. Remove
the exhaust stacks from the fuselage, and 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.

Make sure to adjust the flap on both the left and right wing
panels or you may have difficulty trimming the roll (aileron)
of your P-51 Mustang PTS.

28 Hangar 9 P-51 PTS Mk II Assembly Manual

Setting the Flap Position

To set the flap position, slide the clevis retainer off of the
clevis so it can be opened Use a flat blade screwdriver to
open the clevis and remove it from the control horn rotate
the flap linkage wire to remove it from the flap stay. Insert
the linkage into the appropriate hole and reconnect the clevis
to the center hole of the flap control horn.

Initial Training Flap Settings

Setting the linkage to the forward hole of the stay sets the
flaps to the position for initial flight training. This will allow
the plane to fly at its slowest speed and will be slowest
during landing as well.

Intermediate Setting

As you continue to advance, the flap linkage can again be
moved to the center hole.

Advanced Setting

Setting the linkage in the most rearward hole will place the
flap in the full “UP” position. This is the preferred position
for those with flight experience, as the plane will fly more
like a sport aircraft and will require the greatest amount of
skill (for this type of aircraft) during landing.

29Hangar 9 P-51 PTS Mk II Assembly Manual

Once the flaps have been set, slide the clevis retainer onto
the clevis to keep the clevis from opening accidentally.

Graduate

Once you are comfortable soloing your P-51 PTS Mustang
in this configuration, you’re ready to graduate to advanced
flight and aerobatics. The last step is to remove the clear
anti-spin NACA Droops. This is done by simply removing the
clear tape on the top and bottom that holds them in place on
the wing. With the Droops removed, your P-51 PTS Mustang
is now an all-out aerobatic warbird. Have your instructor
nearby for the first few flights.

The P-51 PTS Mustang will now descend more quickly and
land faster like a sport model. In the air, you can now do a
variety of aerobatics such as rolls, loops, spins and snap
rolls.

The droops are held on with clear tape. Simply pulling the
tape will allow you to remove the droops. Save the wing
droops in case you may want to use them for training a
budding fellow pilot in the future.

Section 23:

Adding a Flap Servo

Required Parts

• Wing panel (right and left)

• Servo mounting block (4)

• Servo w/hardware (2)

Required Tools and Adhesives

• Pencil • 6-minute epoxy

• Drill • Sandpaper

• Phillips screwdriver: #1 • Thin CA

• Mixing cups • Mixing sticks

• Drill bit: 1/16-inch (1.5mm) • Hobby knife w/#11 blade

• Side cutters

 Step 1

Slide the clevis retainer off of the clevis so it can be opened.
Use a flat blade screwdriver to open the clevis and remove
it from the flap control horn. Rotate the linkage wire and
remove it from the flap stay. Set the linkage aside until later.

Hint: The glue residue from the clear tape can be
removed with isopropyl alcohol or CA accelerator or
paint thinner. Always test solvents in an inconspicuous
place to make sure they will not damage the covering of
your model.

After you have graduated from the Progressing Training
System and are enjoying your P-51 PTS Mustang in its
aerobatic mode, you can take it even a step further and add
functional flaps. To do this, you’ll need to purchase two

additional servos from your local hobby shop such as the JR

SPORT ST-47 servo and a Y-harness. Then, simply remove
the cover over the flap servo in the bottom of the wing
and install the servos. Hook up the linkages to the servos
following the directions and you have a scale P-51 PTS
Mustang complete with functioning landing flaps.

30 Hangar 9 P-51 PTS Mk II Assembly Manual

 Step 2

Use a #1 Phillips screwdriver to remove the servo cover

from the wing. Set the screws with the linkage for later use.

 Step 3

Use a hobby knife to score the flap stay on both sides. You
only need to go across the stay a couple times to weaken it.
Bend it side to side a couple times and it will break free.

 Step 4

Turn on the radio and plug a Y-harness into the Aux1 port on
the main receiver. Plug the flap servo into one of the servo
leads of the Y-harness. Turn on the transmitter and receiver
to center the flap servo. Position the servo arm on the servo
so it is centered as shown in the images below.

Note: Accessing the receiver to plug in the Y-harness
is covered in Section 11: Binding on Page 14 of this
manual.

 Step 5

Position the flap servo on the flap servo cover so the servo
arm is centered in the opening on the cover as shown.

31Hangar 9 P-51 PTS Mk II Assembly Manual

 Step 6

Check that the edge of the servo horn is in line with the edge
of the servo cover.

 Step 7

Use a pencil to mark the position of the servo on the flap
servo cover.

 Step 8

Use sandpaper to roughen the ends of the four servo
mounting blocks. Doing so will allow the epoxy applied to
them in the next step a better surface to adhere to.

 Step 9

Use 6-minute epoxy to secure the servo mounting blocks on
the servo hatch.

 Step 10

Position the servo between the blocks. Leave a small gap
between the servo and hatch to prevent the transfer of
vibration from the airframe into the servo. Use a pencil to
transfer the locations for the servo mounting screws onto
the servo mounting blocks.

 Step 11

Use a drill and 1/16-inch (1.5mm) drill bit to drill the four
holes for the servo mounting screws.

32 Hangar 9 P-51 PTS Mk II Assembly Manual

 Step 12

Apply 2–3 drops of thin CA into the holes to harden the
surrounding wood. This provides a hard surface for the
screws, making them more secure when installed.

 Step 13

Attach the servo to the servo mounting blocks using the

screws provided with the servo and a #1 Phillips screwdriver.

 Step 14

Remove the servo horn using a #1 Phillips screwdriver and trim

away any unused arms from the servo horn with side cutters.

Once complete reinstall the servo horn using a #1 Phillips

screwdriver. Use a pin drill and 5/64-inch (2mm) drill bit to
enlarge the hole 1/2-inch (13mm) from the center of the servo
arm as shown.

 Step 15

Insert the flap servo lead into the same opening inside the
wing that the aileron servo lead passes through.

 Step 16

Guide the flap servo lead out of the end of the wing. We
used a piece of tape on the flap servo lead to make sure it is
not confused with the aileron servo lead when attaching the
wing to the fuselage.

 Step 17

Secure the servo hatch to the wing using the four 2mm x

10mm self tapping screws and a #1 Phillips screwdriver.

33Hangar 9 P-51 PTS Mk II Assembly Manual

 Step 18

Redu ce photo to 13. 5%

FLAPS

FLAP ELEV
NORM≤ 0 0
LAND 0 0

List

Redu ce photo to 13. 5%

FLAPS

FLAP ELEV
NORM 0 0
LAND≤ 0 0

List

Insert the flap linkage into the outer hole you enlarged earlier.
Rotate the linkage to face toward the flap control horn.

 Step 19

Attach the clevis to the flap control horn center hole. Plug
the flap servo lead into the servo leads on the Y-harness.
Turn on the transmitter and receiver. Position the flap switch
to the “NORM” position as shown. With the radio in the
programming mode for FLAPS, adjust the percentage using
the Rolling Selector to set the “UP” position of the flap so it
is aligned with the trailing edge of the wing.

 Step 20

With the radio system still on, position the flap switch to
the “LAND” position as shown. With the radio still in the
programming mode for FLAPS, adjust the percentage using
the Rolling Selector to set the “LAND” position of the flap so
there is a measurement of 1-inch (25mm) as shown in the
image below.

34 Hangar 9 P-51 PTS Mk II Assembly Manual

 Step 21

Once the flaps have been adjusted and the control throws
set, slide the clevis retainer onto the clevis to keep the clevis
from opening accidentally.

 Step 22

Repeat Steps 1 through 21 to install the remaining flap servo
and linkage.

Safety Do’s and Don’ts for Pilots

• 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

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 or below 4.7V on the receiver. To do so can 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.

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

for take off 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 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.

35Hangar 9 P-51 PTS Mk II Assembly Manual

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. A small clip, the
clevis has fine threads so that 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 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.

• 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.

• 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 transmitter commands
into physical adjustments of the airplane.

• Servo Output Arm: A removable arm or wheel
that connects 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 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 an airplane stability while in flight.

• Wheel Collar: The round 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.) 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.

36 Hangar 9 P-51 PTS Mk II Assembly Manual

Warranty Information

Warranty Period

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 productsupport@horizonhobby.
com, 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.

37Hangar 9 P-51 PTS Mk II Assembly Manual

Non-Warranty Repairs

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Should your repair not be covered by warranty
the repair will be completed and payment will
be required without notication 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. Non­warranty repair estimates will be billed a minimum of
½ hour of labor. In addition you will be billed for return
freight. Please advise us of your preferred method of
payment. Horizon accepts money orders and cashiers
checks, as well as Visa, MasterCard, American Express,
and Discover cards.
If you choose to pay by credit card, please include your
credit card number and expiration date. Any repair left
unpaid or unclaimed after 90 days will be considered
abandoned and will be disposed of accordingly. Please

note: non-warranty repair is only available on
electronics and model engines.

United States:

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

Horizon Service Center

4105 Fieldstone Road

Champaign, Illinois 61822

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

Horizon Product Support

4105 Fieldstone Road

Champaign, Illinois 61822

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

[e-mail] 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

Please call [phone] or e-mail us at

[e-mail] with any questions or concerns

regarding this product or warranty.

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.

The associated regulatory agencies of the following
countries recognize the noted certifications for this
product as authorized for sale and use:

Please call 877-504-0233 or e-mail us at

[e-mail] with any questions or

concerns regarding this product or warranty.

38 Hangar 9 P-51 PTS Mk II Assembly Manual

2008 Official Academy of Model

Aeronautics Safety Code

GENERAL

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

39Hangar 9 P-51 PTS Mk II Assembly Manual

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© 2008 Horizon Hobby, Inc.

4105 Fieldstone Road

Champaign, Illinois 61822

[phone]

horizonhobby.com

Hangar9.com