Horizon Hobby Hangar 9 HAN7035 User manual

Pawnee Brave 20cc
Instruction Manual
Bedienungsanleitung
Manuel d’utilisation
Manuale di Istruzioni
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HAN7035
Created 06/2022

2EN
NOTICE
All instructions, warranties and other collateral documents are subject to change at the sole discretion of Horizon
Hobby, LLC. For up-to-date product literature, visit horizonhobby.com or www.towerhobbies.com and click on the
support or resources tab for this product.
Age Recommendation: Not For Children Under 14 Years. This Is Not A Toy.
SAFETY WARNINGS AND PRECAUTIONS
Read and follow all instructions and safety precautions before use. Improper use can result in fire, serious injury and
damage to property.
Components
Use only with compatible components. Should any compatibility questions exist, please refer to the product
instructions, component instructions or contact the appropriate Horizon Hobby office.
Flight
Fly only in open areas to ensure safety. It is recommended flying be done at radio control flying fields. Consult local
ordinances before choosing a flying location.
Propeller
Always keep loose items that can become entangled in the propeller away from the prop. This includes loose clothing
or other objects such as pencils and screwdrivers. Keep your hands away from the propeller as injury can occur.
Batteries
Always follow the manufacturer’s instructions when using and disposing of any batteries. Mishandling of Li-Po
batteries can result in fire causing serious injury and damage.
Small Parts
This kit includes small parts and should not be left unattended near children as choking and serious injury could result.
MEANING OF SPECIAL LANGUAGE
The following terms are used throughout the product literature to indicate various levels of potential harm when
operating this product:
WARNING: Procedures, which if not properly followed, create the probability of property damage, collateral damage,
and serious injury OR create a high probability of superficial injury.
CAUTION: Procedures, which if not properly followed, create the probability of physical property damage AND a
possibility of serious injury.
NOTICE: Procedures, which if not properly followed, create a possibility of physical property damage AND a little or
no possibility of injury.
WARNING: Read the ENTIRE instruction manual to become familiar with the features of the product before
operating. Failure to operate the product correctly can result in damage to the product, personal property and
cause serious injury.
This is a sophisticated hobby product. It must be operated with caution and common sense and requires some basic
mechanical ability. Failure to operate this Product in a safe and responsible manner could result in injury or damage
to the product or other property. This product is not intended for use by children without direct adult supervision. Do
not attempt disassembly, use with incompatible components or augment product in any way without the approval
of Horizon Hobby, LLC. This manual contains instructions for safety, operation and maintenance. It is essential to
read and follow all the instructions and warnings in the manual, prior to assembly, setup or use, in order to operate
correctly and avoid damage or serious injury.
SAFE OPERATING RECOMMENDATIONS
• Inspect your model before every flight to ensure it is airworthy.
• Be aware of any other radio frequency user who may present an interference problem.
• Always be courteous and respectful of other users in your selected flight area.
• Choose an area clear of obstacles and large enough to safely accomodate your flying activity.
• Make sure this area is clear of friends and spectators prior to launching your aircraft.
• Be aware of other activities in the vicinity of your flight path that could cause potential conflict.
• Carefully plan your flight path prior to launch.
• Abide by any and all established AMA National Model Aircraft Safety Code.
BEFORE STARTING ASSEMBLY
• Remove parts from bag.
• Inspect fuselage, wing panels, rudder and stabilizer for damage.
• If you find damaged or missing parts, contact your place of purchase.
• Charge transmitter and receiver batteries.
• Center trims and sticks on your transmitter.
• For a computer radio, create a model memory for this particular model.
• Bind your transmitter and receiver, using your radio system’s instructions.
NOTICE: Rebind the radio system once all control throws are set. This will keep the servos from moving to their
endpoints until the transmitter and receiver connect. It will also guarantee the servo reversal settings are saved in the
radio system.
IMPORTANT FEDERAL AVIATION ADMINISTRATION (FAA) INFORMATION
Use the QR code to learn more about the Recreational UAS Safety Test (TRUST), as was introduced
by the 2018 FAA Reauthorization Bill. This free test is required by the FAA for all recreational flyers
in the United States. The completed certificate must be presented upon request by any FAA or law
enforcement official.
If your model aircraft weighs more than .55lbs or 250 grams, you are required by the FAA to
register as a recreational flyer and apply your registration number to the outside of your aircraft.
Use the QR code to learn more about registering with the FAA..

3 EN
Pawnee Brave 20cc ARF
OPTIONAL PARTS
# Required Item # Description
1 SPMA100 Optical Ignition Kill Switch
1 SPMXCA514 Extension:IC5 Battery/IC5 Device
1 SPMA3054 Servo Connector Clips (25)
REPLACEMENT PARTS
Item # Description
HAN703501 Fuselage
HAN703502 Wing; Left-Hand
HAN703503 Wing; Right-Hand
HAN703504 Stabilizer and Elevator
HAN703505 Fin and Rudder
HAN703506 Cowling
HAN703507 Fuselage Hatch
HAN703508 Canopy
HAN703509 Landing Gear
HAN703510 Wing Tube
HAN703511 Hardware Set
HAN703512 Pushrod Set
HAN703513 Tailwheel Assembly
HAN703514 Spinner
HAN703515 Decal Sheet
HAN703516 EP Mount Box
HAN703517 Fuel Tank
HAN703518 Wheels
TABLE OF CONTENTS
Notice......................................................................................................................................................................2
Meaning of Special Language..................................................................................................................................2
Safety Warnings and Precautions.............................................................................................................................2
Safe Operating Recommendations...........................................................................................................................2
Before Starting Assembly.........................................................................................................................................2
Important Federal Aviation Administration (FAA) Information.....................................................................................2
Replacement Parts...................................................................................................................................................3
Optional Parts..........................................................................................................................................................3
Required for Completion, All Power Options..............................................................................................................4
Required for Completion, Gas Engine Installation......................................................................................................4
Required for Completion, Electric Motor Installation .................................................................................................4
Required Adhesives .................................................................................................................................................4
Tools Required.........................................................................................................................................................4
Removing Wrinkles ..................................................................................................................................................5
Building Precautions................................................................................................................................................5
Transportation and Storage......................................................................................................................................5
Replacement Covering.............................................................................................................................................5
Checking Blind Nuts.................................................................................................................................................5
Aileron Control Horn Installation...............................................................................................................................5
Aileron and Flap Hinging..........................................................................................................................................6
Aileron Servo Installation .........................................................................................................................................7
Flap Servo Installation..............................................................................................................................................9
Landing Light Installation.......................................................................................................................................10
Hinging the Elevators.............................................................................................................................................10
Stabilizer Installation..............................................................................................................................................11
Vertical Stabilizer Installation .................................................................................................................................12
Rudder Installation.................................................................................................................................................13
Tailwheel Installation .............................................................................................................................................13
Elevator Servo Installation......................................................................................................................................14
Rudder Servo Installation.......................................................................................................................................15
Receiver and Receiver Battery Installation..............................................................................................................15
Landing Gear Installation .......................................................................................................................................16
Electric Motor Installation.......................................................................................................................................16
Gas Engine Installation...........................................................................................................................................18
Fuel Tank Installation .............................................................................................................................................21
Cowling Installation................................................................................................................................................22
Canopy Hatch assembly.........................................................................................................................................23
Center of Gravity....................................................................................................................................................24
Control Throws ......................................................................................................................................................25
Preflight Checklist..................................................................................................................................................25
Daily Flight Checks ................................................................................................................................................25
Limited Warranty ...................................................................................................................................................25
Warranty and Service Contact Information .............................................................................................................26
WEEE NOTICE ........................................................................................................................................................26
Academy of Model Aeronautics National Model Aircraft Safety Code.......................................................................27
Building Notes .......................................................................................................................................................27

4EN
REQUIRED FOR COMPLETION, ALL POWER OPTIONS
# Required Item # Description
2 SPMA3004 Heavy-Duty Servo Extension 18-inch
1 SPMAR8360T AR8360T 8CH SAFE Telemetry RX
3 SPMA3000 Heavy-Duty Servo Extension 3-inch
5 SPMA3001 Heavy-Duty Servo Extension 6-inch
1 SPMA3003 Heavy-Duty Servo Extension 12-inch
6 SPMSA6380 A6380 H-T/H-S Digital HV Servo
2 SPMX20002SRX 2000mAh 2S 7.4V Smart Receiver Battery; IC3
REQUIRED FOR COMPLETION, ELECTRIC MOTOR INSTALLATION
# Required Item # Description
1 APC17070E Electric Propeller, 17 X 7E
1 SPMX56S50 5000mAh 6S 22.2V Smart G2 50C;
1 SPMXAE1100 Avian 100 Amp Brushless Smart ESC, 6S
1 SPMXAM4770 5065-450Kv Outrunner BL Mot
REQUIRED ADHESIVES
Description
15-minute epoxy
30-minute epoxy
Thin CA
Medium CA
Thread lock, low and high strength
TOOLS REQUIRED
Description
Box or open end wrench: 10mm, 7/16-inch, 1/2-inch
Clamps
Covering iron
Cutoff wheel for rotary tool
Drill
Drill bit set, metric and english
Epoxy brushes
Felt-tipped pen
Flat blade screwdriver
Flat file
Flux paste
Heat gun
Hemostats
Hex wrench set, metric and english
Hobby knife with #11 blade
Hobby scissors
Hobby square
Hook and loop tape
Light machine oil
Low tack tape
Medium grit sandpaper
Mixing cups
Mixing sticks
Pencil
Phillips screwdriver #1, #2
Pin vise
Pliers
Razor saw
Rotary tool
Ruler
Sanding drum for rotary tool
Scissors
Side cutter
Silver solder
Stepped reamer
Toothpicks
Torch or soldering iron
Vise grips
Wire cutter
REQUIRED FOR COMPLETION, GAS ENGINE INSTALLATION
# Required Item # Description
1 APC17060 Competition Propeller,17 x 6
1 DLEG0420 DLE-20RA Gas Rear Exhaust with Electronic Ignition
2 SPM9530 Spektrum 3-Wire Switch Harness
1 SUL211 2' ProFlex Universal Fuel Line
1 SPMSA6380 A6380 H-T/H-S Digital HV Servo

AILERON CONTROL HORN INSTALLATION
1. Use a felt-tipped pen to mark the center of the slot in the
hinges on both the wing and control surfaces.
5. Locate the control horns marked “A” for the ailerons. Test fit
the control horns in the slots for the ailerons. Do not force the
control horn into the slot.
3. Use a rotary tool and 1/16-inch (1.5mm) drill bit to drill the
location in the wing trailing edge and control surfaces marked
in Step 1.
2. Separate the aileron and flap from the wing. Set the hinges
aside.
4. Use medium-grit sandpaper to lightly sand the control horns
where they fit into the control surface. Clean the sanded area
using a paper towel and isopropyl alcohol to remove any
debris or oils.
Use tape on the painted area to help prevent removing
the paint from the exposed portion of the control horn.
Remove the tape once the control horn has been sanded.
5 EN
Pawnee Brave 20cc ARF
REMOVING WRINKLES
The covering of your model may develop wrinkles during shipping. Use a covering iron with a sealing iron sock
(HAN141) to remove them. Start with a lower heat setting and use caution while working around areas where the
colors overlap to prevent separating the colors. It is also advised to use caution around the canopy as it is plastic and
could distort with excessive heat. Avoid using too much heat, which could also separate the colors. Placing a cool
damp cloth on adjacent colors will also help prevent the separation of the colors while removing wrinkles. Only use a
heat gun (HAN100) once the covering iron has been used.
BUILDING PRECAUTIONS
Prepare the work surface prior to beginning the build. The surface should be soft and free of any sharp objects. We
recommend resting the airframe parts on a soft towel or pit mat to prevent scratching or denting the surface of the
aircraft.
TRANSPORTATION AND STORAGE
When transporting and storing your model, you will need a minimum of 80 inches (2.1m) in length, and 19 inches
(50cm) in height to accommodate the size of the fuselage. We also recommend the use of wing and stabilizer bags to
help protect these surfaces during transport and storage. The control horns and linkages can cause damage to other
surfaces even when placed in storage bags. Always transport and store the wings and stabilizer so the linkages do not
contact other panels to prevent damage.
REPLACEMENT COVERING
Your model is covered with UltraCote®film in the following colors. If repairs are required, order these coverings to
make those repairs.
White HANU870
Black HANU874
True Red HANU866
CHECKING BLIND NUTS
When building the aircraft, you will be required to thread machine screws into blind nuts. We recommend pre-threading
the screws to make sure the blind nuts are clear of any debris. If the screws do not thread in easily, clear the threads
using the appropriate tap and tap handle.

6. Use low-tack tape around the control horns to prevent epoxy
from getting on the control surface.
7. Use a square to check that the control horn is square to
the control surface. The slot in the control surface can be
carefully adjusted using a hobby knife.
9. Apply epoxy to the area of the control horn that fits into the
slot. Apply epoxy to all the surfaces of the control horn that fit
into the control surface.
10. Use a paper towel and isopropyl alcohol to remove any
excess epoxy.
8. Apply epoxy to the slot in the control surface. Make sure the
epoxy gets into the slot for a good bond between the surfaces
and control horn.
11. Before the epoxy fully cures, remove the tape from around
the control horn. This will allow the epoxy to flow around the
control horn, creating a small fillet between the control horn
and surface for a finished look and secure bond. Allow the
epoxy to fully cure before proceeding.
Use the control horns marked “F” and repeat the
previous section to install the flap control horns.
AILERON AND FLAP HINGING
12. Place a T-pin in the center of each hinge. This will keep the
hinges centered when they are installed.
14. Fit the aileron into position on the hinges.
15. Fit the flap into position on the hinges.
13. Fit the hinge in the hinge slot. Align the slot in the hinge with
the hole in the wing. Install the hinges for the aileron and flap.
6EN

16. Remove the T-pins from the hinges.
17. Check the gap between the aileron at the wing tip.
19. Finally, check the gap between the wing and flap at the wing
root. Adjust the position of the aileron and flap so all three
gaps are equal.
20. Soak thin CA into each of the hinges, both on the top and
bottom of the hinge.
Do not use accelerator on the hinges. The CA must
be allowed to wick into the hinge to provide the best
bond between the hinge and surrounding wood.
18. Check the gap between the aileron and flap.
21. Once the CA has fully cured, gently pull on the wing and
aileron to make sure the hinges are secure.
22. Break in the hinges by flexing the control surface through its
range of motion in both directions.
AILERON SERVO INSTALLATION
23. Remove the servo cover for the aileron.
24. Use a toothpick or hobby knife with a #11 blade to puncture
the aileron servo cover for the mounting screws.
7 EN
Pawnee Brave 20cc ARF

25. Use a #1 Phillips screwdriver to thread an M2.5 x 10 self-
tapping screw into each of the holes. Remove the screws
before proceeding.
26. Apply 1–2 drops of thin CA in each hole to harden the
surrounding wood. Allow the CA to fully cure before
proceeding.
28. Thread a servo mounting screw into each hole, then remove
all the screws. Apply 1–2 drops of thin CA in each hole to
harden the surrounding wood. Allow the CA to fully cure
before proceeding. Mount the servo using the screws
provided with the servo. Note the orientation of the servo on
the servo cover
29. Secure a 9-inch (225mm) servo extension to the servo lead
using a commercially available retainer (Servo Connector
Clips, SPMA3054).
27. Use a pin vise or drill and 5/64-inch (2mm) drill bit to drill
through the holes in the servo mount.
30. Center the servo using the radio system. Place the control
horn on the servo so it is perpendicular to the servo. Remove
any arms from the servo horn that will interfere with the
operation of the servo.
31. When attaching the linkage to the servo arm, use the hole
that is 1 in (25mm) from the center of the servo horn. This
hole will need to be enlarged using a pin vise and 5/64-inch
(2mm) drill bit.
32. Tie or tape the string located inside the wing to the end of the
servo lead.
33. Guide the servo lead for the aileron through the wing to the
wing root.
34. Secure the aileron servo cover using a #1 Phillips screwdriver
and four M2.5 x 10 self-tapping screws.
8EN
1 inch
(25mm)

35. Locate the linkage for the ailerons. With the clevis removed,
the linkage will measure 35/32 inches (80mm).
The clevis does not require removal.
This step is for reference only.
36. Insert the bend in the linkage through the hole in the servo
arm indicated in Step 34.
37. With the servo connected to the radio system, center the
servo using the radio system. Connect the clevis to the
control horn.
38. Adjust the linkage so the aileron aligns with the wing tip.
39. Once aligned, slide the silicone retainer over the forks of the
clevis. Thread the nut away from the clevis. Apply a small
drop of threadlock on the threads near the clevis. Use pliers to
tighten the nut against the clevis.
FLAP SERVO INSTALLATION
40. Repeat the steps for installing the aileron servo to the servo
cover to install the flap servo.
Set the flap travel to 0%, then attach the servo
arm 90-dgrees to the servo center line.
42. Locate the linkage for the flaps. With the clevis removed, the
linkage will measure 31/2inches (90mm).
The clevis does not require removal.
This step is for reference only.
43. Install the servo in the wing and secure the servo cover using
M2.5 x 10 self-tapping screws. Make sure to prepare and
harden the threads in the wood as outlined for the aileron
servo covers. Attach the linkage to the servo and control horn.
41. When attaching the linkage to the servo arm, use the hole
that is 13/16 in (21mm) from the center of the servo horn.
This hole will need to be enlarged using a pin vise and 5/64-
inch (2mm) drill bit.
9 EN
Pawnee Brave 20cc ARF
13/16 inch
(21mm)
35/32 inches (80mm)
31/2inches (90mm)

44. With the flap servo centered using the radio system, adjust
the linkage to achieve the 1 inch (25mm) mid-flap throw.
45. Move the control at the transmitter to the raised flap position.
Adjust the throw percentage of throw at the radio to align the
flap with the trailing edge of the wing at the root.
LANDING LIGHT INSTALLATION
47. Insert the wire into the wing for the landing light. You will
need to use a pushrod wire or similar to retrieve the wire at
the root of the wing.
Use a hobby knife with a #11 blade or round file to
carefully enlarge the hole so the landing light fits snugly.
48. Use a small amount of silicone adhesive to glue the landing
light into position in the wing.
Apply a drop of thin CA to the light where the lens cover
fits to secure the lens cover to the metal body of the light
46. Move the control at the transmitter to the full flap position.
Adjust the throw percentage of throw to achieve the 211/32
inches (60mm) full-flap throw.
49. The landing light cover for the landing light is not symmetrical
and will conform to the airfoil of the wing. Make sure it is
oriented the correct direction when gluing it in place.
50. Use canopy glue to glue the landing light cover to the wing.
Use low-tack tape to hold the cover in position until the
adhesive fully cures.
HINGING THE ELEVATORS
51. Prepare and hinge the elevators to the stabilizer. Make sure
the tips of the elevators and stabilizer are aligned before
gluing the hinges. Make sure to verify the hinges are securely
glued before proceeding.
52. Locate the control horns marked “E” for the elevators. Use
epoxy to glue the elevator control horns in position. Allow the
adhesive to fully cure before proceeding.
53. Use a small piece of low-tack tape to hold the elevators in
alignment with the stabilizer for the next few steps.
10EN

STABILIZER INSTALLATION
54. Remove the canopy hatch from the fuselage by sliding the
latch located behind the hatch rearward. Lift the hatch at the
rear and remove it from the fuselage. Set it aside in a safe
location.
55. Slide the wing tubes into the wing tube sockets.
56. Use a hobby knife with a #11 blade to remove the covering
for the two wing bolts and the opening for the servo leads on
both sides of the fuselage.
57. Slide the wing panel into position. Guide the flap and aileron
leads into the fuselage.
58. Secure the wing to the fuselage using two 1/4-20 x 1 nylon
wing bolts.
Only one wing bolt per wing panel (near the wing
tube) is require for normal flying. Use two wing bolts
when flying your model more aggressively.
59. Repeat the steps to secure the remaining wing panel on the
fuselage.
60. Place the stabilizer in position. The control horn will be on the
bottom of the elevators when installed.
61. Stand back 8-10 feet (2-3 meters) and check that the
stabilizer is aligned with the wing. Lightly sand the stabilizer
saddle on the fuselage to correct any misalignment.
62. Measure from each wing tip to each stabilizer tip. Adjust the
stabilizer so the measurements are the same for both sides.
63. Use a felt-tipped pen to transfer the fuselage outline onto the
bottom of the stabilizer.
11 EN
Pawnee Brave 20cc ARF
AA
A=A
AA
A=A

64. Use a hobby knife with a #11 blade to carefully cut the
covering 1/8 inch (3 mm) inside the line drawn on the bottom
of the stabilizer to remove the covering from the center of
the stabilizer. Use care not to cut into the underlying wood,
weakening the stabilizer.
65. Use a hobby knife with a #11 blade to carefully cut the
covering at the leading edge when the stabilizer comes into
contact with the fuselage.
67. Mix 3/4 ounce (25ml) of 30-minute epoxy. Use an epoxy
brush to apply epoxy to the exposed wood on the bottom of
the stabilizer.
68. Use an epoxy brush to apply epoxy to the stabilizer mounting
surface for the stabilizer. Position the stabilizer back on the
fuselage and check its alignment. Use a paper towel and
a small amount of isopropyl alcohol to remove any excess
epoxy from the fuselage and stabilizer before the epoxy fully
cures. Allow the epoxy to fully cure before proceeding.
Check the position of the stabilizer repeatedly during
the curing process to make sure it has not moved.
66. Use a hobby knife with a #11 blade to carefully cut the
covering at the trailing edge when the stabilizer comes into
contact with the fuselage.
Remove any marks from the stabilizer and fuselage
using isopropyl alcohol and a paper towel.
VERTICAL STABILIZER INSTALLATION
69. Remove the rudder and hinges from the fin. Place the fin on
the stabilizer and trace the outline on the top of the stabilizer
using a felt-tipped pen.
70. Trace the outline on the top of the fuselage using a felt-tipped
pen.
71. Use a hobby knife with a #11 blade to carefully cut the
covering 1/8 inch (3 mm) inside the line drawn on the top of
the stabilizer and fuselage to remove the covering. Use care
not to cut into the underlying wood, weakening the stabilizer
or fuselage.
72. Mix 3/4 ounce (25ml) of 30-minute epoxy. Use an epoxy
brush to apply epoxy to the exposed wood on the top of the
stabilizer.
73. Use an epoxy brush to apply epoxy to the fin mounting
surface.
12EN

74. Position the fin back on the fuselage. Use a paper towel and
a small amount of isopropyl alcohol to remove any excess
epoxy from the fuselage and stabilizer before the epoxy
fully cures. Use low-tack tape to hold the fin secure while
the adhesive fully cures. Allow the epoxy to fully cure before
proceeding.
RUDDER INSTALLATION
75. Use a hobby knife with a #11 blade to cut the slot in the
fuselage for the bottom rudder hinge.
77. Hinge the rudder to the fin and fuselage using the techniques
outline previously in this manual.
TAILWHEEL INSTALLATION
78. Place the tailwheel arm on the bottom of the rudder. Use a
felt-tipped pen to mark the locations for the mounting screws
on the rudder.
76. Locate the control horn marked “R” for the rudder. Use
5-minute epoxy to glue the rudder control horn in position.
Allow the adhesive to fully cure before proceeding.
79. Use a drill and 1.5mm drill bit to drill the two holes for the
tailwheel arm mounting screws.
80. Thread an M2.5 x 10 sheet metal screw into each hole using
a #2 Phillips screwdriver
82. Once the CA has fully cured, attach the tailwheel arm to the
bottom of the rudder using the two screws and a #2 Phillips
screwdriver.
81. Remove the screws and apply 2-3 drops of thin CA into each
hole.
83. Place the M3 lock washers on the M3 x 12 tailwheel bracket
mounting screws.
13 EN
Pawnee Brave 20cc ARF

84. Attach the tail wheel bracket to the bottom of the fuselage
using the two M3 x 12 socket head screws. Use a 2.5mm hex
wrench to tighten the screws.
89. When attaching the linkage to the servo arm, use the hole
that is 13/16 in (21mm) from the center of the servo horn.
This hole will need to be enlarged using a pin vise and 5/64-
inch (2mm) drill bit.
91. Remove the clevis and nut from the two 235/8inch (600mm)
pushrods. Slide both pushrods through the tubes in the
fuselage. The pushrods will exit under the stabilizer.
92. Thread the nut, then the clevis, on the pushrod. The end of the
pushrod will protrude slightly between the forks of the clevis.
Attach the pushrods for both elevator halves.
90. Attach the bend in the 37/8inch (98mm) to the servo arm.
93. Slide the elevator pushrod connector on the pushrod from the
servo. The pushrod will be in the center hole of the connector.
85. Bend the ends of the springs so the end can be inserted
inside the coils of the spring. Make sure both springs are the
same length after bending.
88. Center the elevator servo using the radio system. Attach the
servo arm to the servo so it is parallel to the servo centerline.
Remove any arms from the servo horn the will interfere with
the operation of the servo and linkage using side cutters.
ELEVATOR SERVO INSTALLATION
87. Install the elevator servo in the fuselage using the hardware
included with the servo. The output of the servo faces toward
the front of the fuselage. Make sure to prepare the screw
holes following steps outlined earlier in this manual.
86. Connect the tailwheel steering arm to the arm on the bottom
of the rudder using the two springs. Bend the loops on the
ends of the springs as necessary to attach and secure their
position.
14EN
13/16 inch
(21mm)

94. Slice the connector toward the servo. The two elevator
pushrods can then be inserted into the outer holes of the
connector.
95. Position the connector so it is centered between the elevator
and servo pushrods. Place a drop of threadlock on each
setscrew as they are tightened into position. Setscrews will
be used to secure both elevator pushrod and the pushrod
from the servo.
97. When attaching the linkage to the servo arm, use the hole
that is 1 inch (25mm) from the center of the servo horn. This
hole will need to be enlarged using a pin vise and 5/64-inch
(2mm) drill bit.
98. Attach the bend in the 263/4inch (680mm) to the servo arm.
Remove any arms from the servo horn the will interfere with
the operation of the servo and linkage using side cutters.
The arm will attach perpendicular to the servo
centerline. Check this alignment before attaching the
pushrod and removing any of the servo arms.
RUDDER SERVO INSTALLATION
96. Install the rudder servo in the fuselage using the hardware
included with the servo. The output of the servo faces toward
the front of the fuselage. Make sure to prepare the screw
holes following steps outlined earlier on this manual.
99. Center the rudder servo using the radio system. Remove the
clevis and nut from the rudder pushrod and slide it into the
rudder pushrod tube in the fuselage. Attach the servo arm
to the servo. Remove any arms from the servo horn the will
interfere with the operation of the servo and linkage using
side cutters.
100. Thread the nut, then the clevis, on the pushrod. Attach the
clevis to the rudder control horn. with the rudder servo
centered, adjust the clevis to center the rudder.
Slide the silicone retainer over the forks of the rudder
and elevator clevises. Thread the nut away from the
clevis. Apply a drop of threadlock on the threads near the
clevis. Use pliers to tighten the nut against the clevis.
102. Remove the covering from the side of the fuselage using a
hobby knife and #11 blade. Mount the receiver switch and
connect the appropriate lead to the receiver.
103. Secure the receiver battery in the fuselage using hook and
loop tape and tie wraps. Secure the lead from the battery to
the receiver switch.
RECEIVER AND RECEIVER BATTERY INSTALLATION
101. Secure the receiver in the fuselage and route the antenna as
outlined in the receiver or radio manual. Connect the rudder
and elevator servo leads to the appropriate ports on the
receiver.
15 EN
Pawnee Brave 20cc ARF
1 inch
(25mm)

The receiver batteries can also be mounted on the bottom
of the fuselage to provide more room on the servo tray.
LANDING GEAR INSTALLATION
104. Use two 1/2-inch wrenches to attach the axle to the landing
gear
105. Loosen the setscrews in the wheel collars using a 1.5mm hex
wrench. Remove the outer wheel collar. Slide the remaining
wheel collar tight against the hex and tighten the setscrew.
Apply a drop of threadlock on the setscrew before
tightening to prevent it from loosening.
107. Fit the wheel to the axle, then install the remaining wheel
collar on the axle. Make sure the setscrew is tightened on the
flat area made on the axle.
Apply a drop of threadlock on the setscrew before
tightening to prevent it from loosening.
108. Attach the landing gear to the fuselage using four M4 x 20
socket head cap screws and four M4 washers. Tighten the
screws using a 3mm hex wrench.
Apply a drop of threadlock on each screw
to prevent it from loosening.
110. Place the X-mount on the motor box. Align the holes in the
mount with the lines on the motor box. Mark the location for
the mounting holes on the motor box using a pencil.
111. Remove the mount and drill the holes for the motor mounting
screws using drill and 7/32-inch (5.5mm) drill bit.
ELECTRIC MOTOR INSTALLATION
109. Use a pencil to extend the centerlines on the motor box.
106. Apply a drop of light machine oil on the axle.
16EN

117. Slide the plate back and apply a thin coat of 30-minute epoxy
to the motor box where the plate comes in contact with the
box.
118. Slide the plate forward. Use a paper towel and isopropyl
alcohol to remove any excess epoxy. Use tape to hold the
sides of the motor box tight against the plate until the epoxy
fully cures.
120. Attach the motor box to the firewall using four M4 washers
and four M4 x 20 socket head cap screws. Use threadlock on
the blind nuts to prevent them from vibrating loose.
121. Attach the motor box to the firewall using four M4 blind nuts,
four M4 washers and four M4 x 20 socket head cap screws.
Use threadlock on the blind nuts to prevent them from
vibrating loose.
119. Once the epoxy fully cures, remove the tape. Install the
triangle stock on the inside of the motor box. Make sure to
cut the triangle stock so it does not interfere with the holes
for mounting the motor and fits tight into the corners of the
motor box.
112. Use a #2 Phillips screwdriver to attach the X-mount to the
rear of the motor. Use a 2.5mm hex wrench to attach the
propeller adapter to the front of the motor. Use thread lock on
all metal-to-metal fasteners to prevent them from vibrating
loose.
113. Use two M4 x 20 socket head cap screws, two M4 washers
and two M4 lock nuts to temporarily attach the motor to the
motor box plate
115. Position the plate so the distance from the face of the drive
washer to the back of the motor box measures 59/16-inches
(141mm)
116. Mark the location of the plate and remove the motor from the
motor box plate.
114. Position the motor box plate fully forward when using
the recommended Spektrum Avian motor. The mount is
adjustable for a variety of motors.
17 EN
Pawnee Brave 20cc ARF
59/16 inches
(141mm)

127. Apply hook and loop tape to the battery tray.
128. Use the hook and loop straps and tape to secure the batteries
to the battery tray.
Make sure not to cover any warning labels on the battery.
The Brave can be powered by two batteries in parallel,
or a single battery. Both options are shown.
122. Remove the plate from the fuselage to allow cooling air to
enter the fuselage.
123. Thread the 1/4-20 nylon bolt into the threaded insert from the
bottom of the battery tray.
124. Slide the tray into the fuselage. The head of the nylon bolt will
fit into the notch in the fuselage tray. Make sure the nylon bolt
is threaded in enough to keep the tray from moving up and
down inside the fuselage.
125. Remove the tray from the fuselage and use side cutters to
remove the excess bolt from the upper side of the tray.
126. Use a sanding block and medium grit sandpaper to sand the
bolt flush with the top of the tray so it doesn’t damage the
battery when they are mounted to the tray.
129. Slide the tray with the battery into the fuselage. The tray is
then secured at the rear using a 1/4-20 nylon bolt.
GAS ENGINE INSTALLATION
130. Attach the engine mount to the firewall using four M4 x
30 machine screws and four M4 washers. Place a drop of
threadlock on each screw before their installation. Use a #2
Phillips screwdriver to tighten the screws once both mounts
have been positioned correctly on the firewall.
18EN

131. Fit the engine between the engine mounts. Adjust the engine
so the face of the drive washer is 59/16-inches (141mm)
forward of the firewall.
Use a clamp to hold the engine secure for the following steps.
132. Use a felt-tipped pen to mark the location for the four engine
mounting bolts on the engine mount.
134. Mark the location of the throttle pushrod on the firewall using
a sharpened wire or felt-tipped pen. Remove the engine from
the mount.
135. Use a drill and 5/32-inch (4mm) drill bit to drill the hole for
the throttle pushrod.
133. Remove the engine from the mounts. Use a drill and
11/64-inch (4.5mm) drill bit to drill the holes for the engine
mounting screws.
136. Slide the throttle pushrod tube into the hole in the firewall.
Once installed, the tube will protrude 1/16 inch (1.5mm) from
the firewall.
137. Guide the pushrod tube through the fuselage toward the
throttle servo. Make sure the tube does not make any
extreme bends that could cause the pushrod to bind inside
the tube.
The servo tray has locations on either side of the
fuselage for the throttle servo. Use the location that
best suits the engine selected for your model.
138. Trim the pushrod tube 1/4 inch (6mm) behind the former that
support the radio tray in the fuselage using side cutters. Use
medium CA to glue the tube in the fuselage.
Make sure the CA does not enter the tube, which
could glue the pushrod wire to the tube.
139. Slide an M4 washer on each M4 x 30 machine screw,
then place an M4 locknut on each screw. Use a #2 Phillips
screwdriver and 7mm hex driver to tighten all four screws,
securing the engine to the engine mount.
19 EN
Pawnee Brave 20cc ARF
59/16 inches
(141mm)

140. Install the throttle servo in the fuselage using the hardware
included with the servo. The output of the servo faces toward
the rear of the fuselage. Make sure to prepare the screw
holes following steps outlined earlier on this manual.
When mounting the throttle servo on the opposite
side as shown in the manual, a support must
be fabricated to support the pushrod tube for
the throttle pushrod to operate properly
141. Mount the throttle servo connector in the throttle servo arm.
Place a drop of canopy glue on the M2 nut, then install it on
the underside of the arm to secure the connector.
The servo tray has locations on either side of the
fuselage for the throttle servo. Use the location that
best suits the engine selected for your model.
142. Center the servo using the radio system and install the servo
arm on the servo, perpendicular to the servo center line
146. Secure the ignition module and receiver battery in the
fuselage. Use hook and loop tape and tie wraps to secure
their location. Make any connections using the instructions
provided with the engine.
144. Check the operation of the carburetor to make sure it opens
fully, and the pushrod does not bind.
145. Use side cutters to trim and excess pushrod that may
interfere with the operation of the throttle.
The servo location opposite the throttle servo
can be used to mount a choke servo.
143. Move the carburetor and servo to the low-throttle position
and tighten the setscrew securing the pushrod to the
connector at the servo. Use side cutters to trim the excess
wire. Check the operation of the carburetor using the radio
system. Make any adjustments necessary to fully open and
close the carburetor using the radio system.
20EN