Hangar 9 HAN4670CR Manuale del proprietario

OV-10 Bronco 30cc

Instruction Manual

Bedienungsanleitung

Manuel d’utilisation

Manuale di Istruzioni

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 ﬁ re, 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 ofﬁ ce.

Flight

Fly only in open areas to ensure safety. It is recommended ﬂ ying be done at radio control ﬂ ying ﬁ elds. Consult local

ordinances before choosing a ﬂ ying 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 ﬁ re 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 superﬁ cial 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 ﬂ ight 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 ﬂ ight area.

• Choose an area clear of obstacles and large enough to safely accomodate your ﬂ ying 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 ﬂ ight path that could cause potential conﬂ ict.

• Carefully plan your ﬂ ight 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 ﬁ nd 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.

FAA INFORMATION

If you own this product, you may be required to register with the FAA.

For up-to-date information on how to register with the FAA, please visit https://registermyuas.faa.gov/.

For additional assistance on regulations and guidance on UAS usage, visit knowbeforeyouﬂ y.org/.

3 EN

OV-10 Bronco 30cc

Part # Description

HAN467001 Nacelle/Boom; Left-Hand

HAN467002 Nacelle/Boom; Right-Hand

HAN467003 Fuselage

HAN467004 Wing Panel; Left-Hand

HAN467005 Wing Panel; Right-Hand

HAN467006 Wing Panel; Center

HAN467007 Stabilizer with Elevator

HAN467008 Rudders (2)

HAN467009 Cowlings (2)

HAN467010 Cockpit Hatch

HAN467011 Canopy

HAN467012 Pilot Figure

HAN467013 Pushrod Set

HAN467014 Hardware Set

HAN467015 Wheels; (3)

HAN467016 Landing Gear Set

HAN467017 Retract Set; Mains

HAN467018 Retract Unit; Nose

HAN467019 Landing Gear Controller

HAN467020 Retract Motor

HAN467021 Landing Gear Strut Set

HAN467022 Wing Tubes

HAN467023 EP Motor Mounts

HAN467024 Scale Parts

HAN467025 Fuselage Pods/Parts

HAN467026 Missiles and Pylons

HAN467027 Gear Door Set

HAN467028 Painted Spinners (2)

HAN467029 Decal Set

REPLACEMENT PARTS

TABLE OF CONTENTS

Notice ......................................................................................................................................................................2

Meaning of Special Language ..................................................................................................................................2

Safety Warnings and Precautions .............................................................................................................................2

Safe Operating Recommendations ...........................................................................................................................2

Before Starting Assembly .........................................................................................................................................2

FAA Information .......................................................................................................................................................2

Replacement Parts ...................................................................................................................................................3

Required for Completion ..........................................................................................................................................4

Required for Completion - EP ...................................................................................................................................4

Required for Completion - Gas .................................................................................................................................4

Optional Parts for Retract Doors ...............................................................................................................................4

Optional Parts ..........................................................................................................................................................4

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

Tools Required .........................................................................................................................................................5

Printed Covering Notes ............................................................................................................................................5

Building Precautions ................................................................................................................................................5

Transportation and Storage ......................................................................................................................................5

Checking Blind Nuts.................................................................................................................................................5

Hinging the Stabilizer and Elevator ...........................................................................................................................6

Building Considerations ...........................................................................................................................................6

Stabilizer Servo Installation ......................................................................................................................................8

Aileron and Aileron Servo Installation .....................................................................................................................10

Flap and Flap Servo Installation .............................................................................................................................12

Center Section Servo Leads ...................................................................................................................................14

Rudder and Rudder Servo Installation ....................................................................................................................14

Optional Retract Door Installation ...........................................................................................................................16

Main Gear Retract Installation ................................................................................................................................17

Nose Gear Retract Installation ................................................................................................................................19

Electric Motor Installation .......................................................................................................................................20

Gas Engine Installation ...........................................................................................................................................21

Fuel Tank Installation .............................................................................................................................................23

Gas Engine Spinner and Propeller Preparation .......................................................................................................24

Cowling Installation................................................................................................................................................25

Radio Installation ...................................................................................................................................................27

Accessory Installation ............................................................................................................................................29

Final Assembly .......................................................................................................................................................32

Center of Gravity ....................................................................................................................................................32

Control Throws ......................................................................................................................................................33

Mixing ...................................................................................................................................................................33

Preﬂ ight Checklist ..................................................................................................................................................33

Daily Flight Checks ................................................................................................................................................33

Limited Warranty ...................................................................................................................................................34

Warranty and Service Contact Information .............................................................................................................35

Instructions for Disposal of WEEE by Users in the European Union ..........................................................................35

Academy of Model Aeronautics National Model Aircraft Safety Code .......................................................................35

4EN

REQUIRED FOR COMPLETION - EP

REQUIRED FOR COMPLETION

REQUIRED FOR COMPLETION - GAS

# Required Part # Description

2 APC18012E Electric Propeller, 18 x 12E

5 CSE011003000 Wire, 36-inch, 10AWG, Black

10 CSE011003100 Wire, 36-inch, 10AWG, Red

4 EFLA266 Gold Bullet Connector Set, 6.5mm

2 GPMG4796 Rimﬁ re 1.70 63-62-200 Outrunner

4 SPMX50006S50 5000mAh 6S 22.2V Smart 50C; IC5

2

SPMXAE1120HV

Avian 120A Brushless Smart ESC 6S–12S

3 SPMX20002SRX 2000mAh 2S 7.4V Smart LiPo Receiver Battery IC3

# Required Part # Description

1 HAN9151 Aluminum Servo Arm, 1-inch SPM/JR

1 SPM9530 Spektrum 3-Wire Switch Harness

1 SPMA3001 Heavy-Duty Servo Extension 6-inch

12 SPMA3003 Heavy-Duty Servo Extension 12-inch

10 SPMA3006 Heavy-Duty Servo Extension 36-inch

1 SPMA3007 Heavy-Duty Servo Extension 48-inch

1 SPMA3054 Servo Connector Clips (25)

1 SPMAR20310T AR20310T 20CH PowerSafe Tele RX

1 SPMSA6320 A6320 H-T/H-S Brushless HV Servo

9 SPMSA6380 A6380 H-T/H-S Digital HV Servo

1 HAN467016 Landing Gear Set

# Required Part # Description

2 SUL215 2-foot Large ProFlex Universal Tubing

2 APC19080W Competition Propeller,19 x 8W

2 DLEG0031 DLE-30cc Gas Rear Carb with Electronic Ignition Mufﬂ er

2 SPM9530 Spektrum 3-Wire Switch Harness

5 SPMX20002SRX 2000mAh 2S 7.4V Smart LiPo Receiver Battery IC3

2 (or 4) SPMSA6380 A6380 H-T/H-S Digital HV Servo (Throttle and Choke Servo)

# Required Part # Description

2 DUB671 Super Strength Long Servo Arm: JR

4 SPMA3003 Heavy-Duty Servo Extension 12-inch

4 SPMA3005 Heavy-Duty Servo Extension 24-inch

2 SPMA3006 Heavy-Duty Servo Extension 36-inch

1 SPMA3008 Heavy-Duty Y-Harness 6-inch

6 SPMSA5060 A5060 H-T/H-S Mini Metal HV Servo

OPTIONAL PARTS FOR RETRACT DOORS

# Required Part # Description

2 EFLM4180A Power 180 BL Outrunner Mtr, 195kV

1 SPMAS3000 AS3000 AS3X Stabilization Module

OPTIONAL PARTS

REQUIRED ADHESIVES

Description

15-minute epoxy

30-minute epoxy

Canopy Glue

Thin CA

Medium CA

Threadlock, low and high strength

5 EN

OV-10 Bronco 30cc

TOOLS REQUIRED

Description

Adjustable wrench

Balancing stand

Box Wrench Set

Clamps

Crimping tool

Drill and tap set, metric

Drill bit set, Imperial or Metric

Epoxy brushes

Felt-tipped pen

Hemostats

Hex wrench set, Imperial and Metric

Hobby knife with #11 blade

Hobby scissors

Hook and loop straps

Hook and loop tape

Isopropyl alcohol

Light machine oil

Low-tack tape

Mixing sticks

Needle nose pliers

Nut driver set, Imperial and Metric

Paper towels

Pencil

Petroleum jelly

Phillips screwdriver: #1, #2

Pin vise

Rotary tool

Ruler

Sanding bar

Sanding drum for rotary tool

Sandpaper

Scissors

Side cutters

Square

Tap handle

Tapered reamer

Tie wraps

Toothpicks

Wire stripper

PRINTED COVERING NOTES

• The covering used on your model has the coloring and markings printed directly on the covering.

• The covering has a self-adhesive backing. Heat can be applied to shrink the covering, just not direct heat as this

will damage the covering. Use a covering iron on low and place a piece of parchment or covering backing between

the model and covering iron to disperse the heat. A heat gun can also be used to shrink the covering. Apply heat

sparingly (2-3 seconds) and use a glove to press the covering in convex curves.

• Use only mild cleaning agents on the printed ﬁ nish. Denatured alcohol is the most aggressive agent we recommend,

but test on an inconspicuous area ﬁ rst. Prolonged use will remove the printed detail.

• Use tape with care. Anything other than low-tack tape can remove the ﬁ nish, particularly on edges.

• Avoid contact with raw fuel, especially alcohol-based fuels containing nitro methane. Prolonged exposure to fuel or

chemicals may damage to the printed covering.

• Remove exhaust residue as soon as practical to avoid staining or damaging of the ﬁ nish.

There are two areas on your aircraft that will receive wear under normal use. The ﬁ rst area is where the cowlings ﬁ t

wing sections, and the sides of the nacelles. Placing the soft side of hook and loop tape inside the cowling will reduce

the wear on the covering in these areas. Sanding the inside of the cowling smooth will also help prevent wear of the

covering under the cowling.

Additional covering has been supplied with your model in case repairs are needed.

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

Use the three-view drawing at the back of the manual to determine how much room will be required to transport

and store your model. 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.

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.

6EN

BUILDING CONSIDERATIONS

Servo Extensions

The OV-10 Bronco uses a large number of servos, and many servo extensions. Make sure to route these extensions

neatly, and label them at each connection to make assembly of the model at the ﬁ eld go smoothly.

Radio Installation

This manual covers the installation for the receiver, receiver batteries and other components in the fuselage. The radio

can also be installed on the underside of the wing center section (photo shown in manual) to reduce the number of

extensions and connections when using gas engines. Feel free to mount these components in locations that best suit

your speciﬁ c requirements.

EP Motors and ESCs

When installing the electric motor option, the ESC for each motor MUST be mounted near the battery. Long battery

leads will cause the ESC to operate incorrectly, or not at all. Keeping the battery-to-ESC leads as short as possible, and

using longer leads to the motors, is the correct installation for these components.

Hinging

The OV-10 Bronco requires a large number of hinges when assembled. The model can be assembled using the

methods shown in the manual, hinging each surface as the model is assembled using 30-minute epoxy. The hinges

can also be installed at the beginning of the build procedure using Aero Tech Epoxy, 50ml (DLMAD64). This is a slow

cure adhesive that can be applied directly into each of the hinge pockets. Make sure to use low-tack tape to hold each

control surface in position until the adhesive has fully cured. Although the process is the same, it is recommended to

read through the manual regarding the hinging process before using the Aero Tech epoxy.

Control Surface Locations

When removing the control surfaces from the ﬁ xed surfaces, we recommend removing only one surface at a time, then

hinging it before removing the next control surface. If planning on removing all the control surfaces, use low-tack tape

to mark them so they can be returned to their correct locations. The covering is not symmetrical, and the trim scheme

will not align if a control surface is in the incorrect location.

Retract Module and the Optional Landing Gear Doors

The retract module is designed to operate up to three retracts and up to three landing gear door servos. The OV-10

Bronco uses six landing gear door servos, which will overload the retract module. The landing gear doors are optional,

and if they are installed, a computer radio that has a gear door sequencer must be used to connect and operate the

landing gear door servos.

A switch must be used between the battery and retract module. When the radio system is turned on, the retracts must

remain off so they do not cycle. Failure to follow this procedure may result in the retracts beginning their retraction

cycle before the radio is connected, which can lead to damage of the air frame (and gear doors if ﬁ tted).

When connecting the retracts to the module, it may be necessary to rotate the plug on one (or more) of the retract

leads 180-degrees so the red (positive) of the retract lead is aligned with the negative (-) on the module. Check the

operation of the retracts, and make this change if necessary. This will not damage the retract.

Servo Arms

The use of a metal servo arm for the elevator servo is highly recommended. This is optional and at the builders

discretion, but due to the large size and importance of the elevator, we advise a metal arm for this surface.

Overall Assembly

Note that much of the assembly must be completed twice (rudder, aileron, engine/motor, etc.). In the case of the ﬂ aps,

this section will be completed four times before continuing. Make sure to plan ahead for time it will take to assemble

this model.

 Do not mix any epoxy until instructed to do so.

 Use the short hinges for the ailerons. The longer hinges

are used for the flaps due to the hinging technique used.

2. Apply a small amount of oil to the ﬂ ex point of the hinge to

prevent epoxy from entering the hinge.

HINGING THE STABILIZER AND ELEVATOR

1. Separate the stabilizer and elevator. Remove the hinges and

set the stabilizer and elevator aside.

 The hinges can also be installed using Aero Tech

Epoxy, 50ml (DLMAD64). This is a slow cure adhesive

applied directly into each of the hinge pockets. Make

sure to use low-tack tape to hold each control surface

in position until the adhesive has fully cured.

3. Insert the hinge so the center of the hinge point aligns with

the front edge of the bevel on the control surface. Check that

the hinge can move freely.

4. Position the hinge so it is perpendicular to the hinge line

when fully deﬂ ected.

5. Mix 1/2 ounces (15mL) of 30-minute epoxy. Remove the

hinges, then use a toothpick to apply epoxy inside each of the

holes for the hinges.

7 EN

OV-10 Bronco 30cc

7. Use a paper towel and isopropyl alcohol to remove any

excess epoxy. Allow the epoxy to fully cure before proceeding.

6. Apply epoxy to the outside of the hinge using a toothpick.

Insert the hinges into the control surface after applying the

epoxy. Verify the hinge position is correct.

8. Mix 1/2 ounces (15mL) of 30-minute epoxy. Use a toothpick

to apply epoxy inside each of the holes for the hinges.

9. Apply epoxy to the outside of the hinge using a toothpick

10. Fit the elevator to the stabilizer. Check that the control surface

can move freely, and the hinges are all aligned properly. Use

a paper towel and isopropyl alcohol to remove any excess

epoxy.

11. Use low-tack tape to hold the elevator in position until the

epoxy fully cures.

8EN

STABILIZER SERVO INSTALLATION

12. Remove the servo cover from the stabilizer. Leave the tape at

the leading edge as a reference.

13. Use a hobby knife with a #11 blade to remove the covering

for the servo arm, and to puncture the holes for the servo

cover mounting screws.

14. Fit the cover back in position. Use a drill and 1/16-inch

(1.5mm) drill bit to drill the four holes through the cover into

the stabilizer for the mounting screws.

 Be careful not to apply too much pressure and drill

through the mount and through the top of the stabilizer.

 The holes for the screws must be prepared as

outlined in the following steps. If they are not

prepared correctly, the screws could come loose in

flight, resulting in the loss of elevator control.

15. Use a #1 Phillips screwdriver to thread an M2 x 10 self-

tapping screw into each hole. Remove the screws before

proceeding.

16. Apply 2–3 drops of thin CA into each hole to harden the

threads made by the screws. Allow the CA to fully cure before

proceeding.

2

3

/

4

inches (70mm)

13/16 inch

(21mm)

17. Use a drill and 1/16-inch (1.5mm) drill bit to drill through the

laser cut holes in the elevator servo mount.

 Use servo with a minimum of 350 oz-in

for the elevator servo. We recommend the

Spektrum A6310 servo (SPMSA6310)

18. Prepare the holes for the elevator screws using the same

technique as the elevator servo cover screws. Secure the

elevator servo in position using the screws provided with the

servo. The output for the servo will face toward the front of

the stabilizer.

 It is recommended to use a metal servo

arm for the elevator servo.

19. Center the elevator servo using the radio system. Position

the servo arm on the servo so it is perpendicular to the servo

centerline. Secure the servo arm to the servo using the

hardware provided with the servo.

20. Assemble the linkage for the elevator using two rod ends and

the 1

5

/

8

inch (41mm) threaded rod. Snap an aluminum ball

into each of the rod ends. Thread each ball end a minimum

of 12 turns on the link. Adjust so the overall length measures

2

3

/

4

inches (70mm).

21. When attaching the linkage to the servo arm, use the hole

in the arm that is 13/16-inch (21mm) from the center of the

arm.

9 EN

OV-10 Bronco 30cc

22. Attach the link to the servo arm using an M3 x 15 button head

screw, M3 washer and M3 Lock nut. Use a 2mm hex wrench

and 5.5mm nut driver.

 The washer must be placed on the outside of the ball link,

opposite the servo arm. Omitting this could allow the ball

to pop out of the plastic ball link causing loss of control.

23. Secure a 12-inch (300mm) servo extension to the elevator

servo lead.

24. Tie the string in the stabilizer to the end of the servo

extension. Use the string to pull the extension through the

stabilizer.

 The elevator servo lead can be routed in either nacelle. Make

sure to note which side the extension exits the stabilizer

when installing the elevator extension in the nacelle.

25. Secure the servo cover in position using four M2 x 10

self-tapping screws. Tighten the screws using a #1 Phillips

screwdriver.

 To further spread the load on the elevator servo mounting

screws, we advise the used of small washers under

the heads of the mounting screws (not included).

26. Run your ﬁ nger along the bottom of the elevator to locate the

area for the control horns near the pushrod. Use a hobby knife

and #11 blade to remove the covering, exposing the slots for

the control horns.

 There are two sets of slots for control horns, so make

sure the ones selected align with the pushrod.

27. Use medium-grit sandpaper to lightly sand the control horn

where it ﬁ ts 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.

29. Remove the control horns from the control surfaces. Insert

the M3 x 15 button head screw into the hole in the control

horn. Remove any paint using a hobby knife and #11 blade so

the screw ﬁ ts into the hole easily. Place an M3 locknut on the

end of the screw but leave the nut loose.

 The hole should be just large enough for the

screw to slide through, yet still fit snugly in

the hole and not move excessively.

28. Test ﬁ t the control horns in the slots. Do not force the control

horn into the slot. Use low-tack tape around the control horns

to prevent epoxy from getting on the control surface.

30. Apply epoxy to the area of the control horn that ﬁ ts into

the slot. Use enough epoxy so the control horn will be fully

bonded to the control surfaces.

31. Make sure to apply epoxy to all the surfaces of the control

horn that ﬁ t into the control surface.

10EN

32. Apply epoxy to the slots in the elevator. Make sure the epoxy

gets into the slots for a good bond between the surfaces and

control horn.

33. Before the epoxy fully cures, remove the tape from around

the control horn. This will allow the epoxy to ﬂ ow around the

control horn, creating a small ﬁ llet between the control horn

and surface for a ﬁ nished look and secure bond. Allow the

epoxy to fully cure before proceeding, then remove the screw

and nut from the control horn.

34. With the servo connected to the radio system, center the

elevator servo. Attach the linkage to the control horn using

the M3 x 15 button head screw and M3 lock nut. Adjust the

linkage to center the elevator. Once the linkage has been

adjusted, tighten the hardware using an M3 hex wrench and

5.5mm nut driver.

 Do not over-tighten this screw as it

may result in excess friction.

AILERON AND AILERON SERVO INSTALLATION

35. Hinge the aileron using the same technique as the stabilizer.

Allow the epoxy to fully cure before proceeding.

 Make sure to label aileron, rudder and flap surfaces before

removing them as it is possible to swap locations resulting

in the covering and control horn locations not aligning.

36. Center the aileron servo using the radio system. With the

servo output facing toward the leading edge of the wing,

place the servo arm on the servo perpendicular to the servo,

rotate the arm 1 spline toward the trailing edge of the wing,

then secure the arm to the servo using the hardware included

with the servo.

 Due to the geometry of the partially enclosed pushrod,

the servo arms are not centered at 90 degrees as they

would be in a conventional external pushrod system.

38. Place the servo in the mounts in the wing. Use the servo

cover to position the servo as close to the cover as possible,

without it contacting the cover.

39. Use a felt-tipped pen to mark the locations for the servo

mounting screws.

37. Remove the cover for the aileron servo. Use a hobby knife

and #11 blade to remove the covering from the pushrod exit

on the bottom of the wing.

11 EN

OV-10 Bronco 30cc

5

1

/

2

inches (140mm)

1 inch

(25mm)

40. Use a pin vise and 1/16-inch (1.5mm) drill bit to drill the four

holes for the servo mounting screws. Make sure to harden

the screw holes.

41. Assemble the linkage for the aileron using two rod ends and

the 4

1

/

2

inch (114mm) threaded rod. Snap an aluminum ball

into each of the rod ends. Thread each ball end a minimum

of 12 turns on the link. Adjust the length so the overall length

measures 5

1

/

2

inches (140mm).

42. When attaching the linkage to the servo arm, use the hole in

the arm that is 1-inch (25mm) from the center of the arm.

44. Place the servo in the wing, guiding the linkage through the

opening near the aileron hinge line. Secure the servo using

the hardware included with the servo.

43. Attach the link to the servo arm using an M3 x 15 button head

screw, M3 washer and M3 Lock nut. Use a 2mm hex wrench

and 5.5mm nut driver.

 The washer must be placed on the outside of the ball link,

opposite the servo arm. Omitting this could cause the ball

to pop out of the plastic ball link, causing loss of control.

45. Secure a 12-inch (300mm) servo extension to the aileron

servo lead. Route the servo lead and extension through the

tube inside the wing. The lead will exit in the opening for the

ﬂ ap servo before continuing through the wing panel.

46. Retrieve the servo lead from the wing panel.

47. Install the aileron control horn using the same technique as

the elevator control horn. Allow the epoxy to fully cure before

proceeding. With the servo connected to the radio system,

center the aileron servo. Attach the linkage to the control horn

using an M3 x 15 button head screw and M3 lock nut. Adjust

the linkage to center the aileron. Once the linkage has been

adjusted, tighten the hardware using an M3 hex wrench and

5.5mm nut driver.

 Do not over-tighten this screw as it

may result in excess friction.

 Repeat this section to install the remaining

aileron and aileron servo.

12EN

5

1

/

2

inches (140mm)

FLAP AND FLAP SERVO INSTALLATION

48. Separate the ﬂ ap from the wing panel.

 The flaps must be positioned to the wing before the epoxy

begins to cure. Make sure to read through all the steps

before mixing any epoxy. Glue only one flap at a time to

allow enough working time to properly install the hinges.

49. Locate the ﬂ ap control horns. When installed, the ﬂ at portion

of the horn (as indicated in the drawing) will face toward the

top of the ﬂ aps.

50. Run your ﬁ nger down the leading edge of the ﬂ ap to locate

the area for the ﬂ ap control horns. Use a hobby knife and

#11 blade to remove the covering, exposing the slots for the

control horn. Use 15-minute epoxy to glue the ﬂ ap control

horns in position. Remove any excess epoxy using a paper

towel and isopropyl alcohol.

 Use the steps outlined for the elevator control

horn to install the flap control horns. Make sure to

check that the flap control horns are glued securely

in the flaps once the adhesive fully cures.

51. Assemble the linkage for the ﬂ ap using two rod ends and

the 4

1

/

2

inch (114mm) threaded rod. Snap an aluminum ball

into each of the rod ends. Thread each ball end a minimum

of 12 turns on the link. Adjust the length so the overall length

measures 5

1

/

2

inches (140mm).

52. Attach the linkage to the control horn using an M3 x 15

button head screw and M3 lock nut. Tighten the hardware

using an M3 hex wrench and 5.5mm nut driver.

 Do not over-tighten this screw as it

may result in excess friction.

53. Insert the long hinges in the ﬂ aps. Check the ﬁ t of the ﬂ ap

to the wing. It will ﬁ t centered in the opening. The hinge pin

will be positioned directly over the gap between the leading

edge of the ﬂ ap and the aft edge of the wing opening. Test

the operation of the ﬂ ap to make sure the hinges are properly

aligned and the ﬂ ap moves freely.

 When installing the flap servos, the servo arms

will all face the same direction. This will allow the

use of a Y-harness to connect all the flap servos.

This mounting system also allows easier radio

programming radio when a Y-harness is not used.

54. Make sure to guide the linkage over the servo tray as shown

in the photo so it can be connected to the ﬂ ap servo. Once

satisﬁ ed with the ﬁ t of the ﬂ ap, use 30-minute epoxy to

glue the hinges in position. Glue the hinges in both the ﬂ ap

and wing, then use a paper towel and isopropyl alcohol to

remove any excess epoxy. Allow the epoxy to fully cure before

proceeding.

13 EN

OV-10 Bronco 30cc

55. Secure the ﬂ ap servo in the servo tray using the hardware

included with the servo. The output of the servo will face

toward the trailing edge of the wing. Make sure to prepare

the holes in the servo tray using thin CA before the servo is

installed.

56. Pull the ﬂ ap and aileron servo leads through the wing. Make

sure to mark the leads so they can be easily identiﬁ ed.

57. Center the ﬂ ap servo. Place the servo arm on the servo so it

is perpendicular to the servo centerline. Remove any arms

that may interfere with the operation of the servo using side

cutters.

58. Attach the ﬂ ap linkage to the servo arm using an M3 x 15

button head screw, M3 washer and M3 Lock nut. Use a 2mm

hex wrench and 5.5mm nut driver.

 The washer must be placed on the outside of the ball link,

opposite the servo arm. Omitting this could allow the ball

to pop out of the plastic ball link causing loss of control.

59. Adjust the linkage to achieve the mid ﬂ ap position of 30˚.

Once set, secure the servo arm to the servo using the

hardware included with the servo.

60. Use the radio or servo tester to move the ﬂ ap to the up ﬂ ap

position. Use the travel settings in the radio to set the ﬂ ap

position

61. Use the radio to move the ﬂ ap to the full ﬂ ap position of 80˚.

Use the travel settings in the radio to set the ﬂ ap position

 When installing the remaining flap servos, attach the servo

arm perpendicular to the servo center line in the mid flap

position. The linkage must be adjusted when the servo is in

the up flap position so the flaps are aligned correctly in flight.

 Take care not to over-travel the servos, as there is a

mechanical limit for both up and down flap positions.

Overloading the servos against these limits will result

in damage to the servos or control surfaces.

 Repeat this section to install the

remaining flaps and flap servos.

14EN

CENTER SECTION SERVO LEADS

 The servo leads that are in the center section can be

installed at this time. Make sure to install enough leads to

properly connect all the servos. These leads will include

flap, aileron, rudder, throttle, choke and elevator.

 If the receiver is mounted in the wing center section

for a gas engine, the use of 24-inch (610mm) will

be long enough to connect to the receiver.

62. Use a hobby knife and #11 blade to remove the covering in

the bottom center of the wing center section

63. Use a hobby knife and #11 blade to remove the covering in

the bottom of the wing center section near each end of the

wing panel. Route a 36-inch (900mm) servo extension for the

ﬂ ap and aileron servos (servos in the outer panels) through

the tubes in the wing center section.

64. Route the leads for the rudder, elevator, throttle and choke (if

using a gas engine) (servos in the nacelles) through the holes

in the ends of the center section.

 The elevator servo lead can be routed in either nacelle.

Make sure the position of the elevator servo extension

corresponds to the position of the lead in the stabilizer.

65. Route all leads through the hole in the center. Make sure that

each lead has been labeled so they can be identiﬁ ed easily

when assembling the model.

 Attaching the plug ends together with a zip tie or

thin hook and loop strap helps reduce the chance

of individual leads falling into the wing.

RUDDER AND RUDDER SERVO INSTALLATION

66. Hinge the rudder following the processes outlined earlier in

the manual. Guide the 35

1

/

2

inch (902mm) pushrod through

the pushrod tube in the nacelle. The pushrod will be located

opposite each other on each nacelle.

67. Insert the pushrod into the tube and gently press it to make

an impression on the covering where it exits the fuselage.

This will leave an impression in the covering to help indicate

where to cut the covering for the push rod exit. Use a hobby

knife and #11 blade to remove the covering so the pushrod

can exit the nacelle near the rudder.

68. Use 30-minute epoxy to glue the rudder control horns in the

rudder. Follow the procedures outlined earlier for the control

horn installation.

 There are slots on both sides of the rudder, so make

sure to only remove the covering for the rudder

control horns on the same side as the pushrod.

69. Center the rudder servo using the radio system. Place a

servo arm on the rudder servo so the arms are parallel and

perpendicular to the servo center line.

70. Place the rudder in the tray on the same side as the rudder

pushrod. Using side cutters, remove any arms that may

interfere with the operation of the linkage using side cutters.

Secure the servo in the nacelle using the hardware included

with the servo.

15 EN

OV-10 Bronco 30cc

71. Snap an aluminum ball into the ball end. Thread the ball end

a minimum of 12 turns on the rudder pushrod. Attach the ball

end to the servo arm using an M3 x 15 button head screw,

M3 washer and M3 Lock nut. Use a 2mm hex wrench and

5.5mm nut driver.

 The washer must be placed on the outside of the ball link,

opposite the servo arm. Omitting this could cause the ball

to pop out of the plastic ball link causing loss of control.

72. Snap an aluminum ball into the ball end. Thread the ball end

a minimum of 12 turns on the rudder pushrod. Attach the ball

end to the control horn using an M3 x 15 button head screw

and M3 lock nut. Adjust the linkage to center the rudder. Once

the linkage has been adjusted, tighten the hardware using an

M3 hex wrench and 5.5mm nut driver.

 Do not over-tighten this screw as it

may result in excess friction.

73. Remove the covering in the ﬁ n to expose the mount for the

stabilizer.

 Repeat the previous steps in this section for

the rudder and rudder servo installation, and

to remove the covering for the stabilizer.

74. Connect a 48 inch and 12 inch servo extension for the

elevator servo. Use tape to secure the extensions. Wrap the

tape as shown, as this will help guide the extension through

the nacelle.

75. Tape the string to the end of the elevator extension. Wrap the

tape on the string as shown to help the extension through the

nacelle.

 The elevator servo lead can be routed in either nacelle.

Make sure the position of the lead corresponds

to the position of the lead in the stabilizer.

76. Use the string to carefully pull the elevator servo lead through

the nacelle.

 There are areas where the lead must make turns that

could cause it to get stuck, so work carefully not to

accidentally disconnect the string or extensions.

77. The elevator extension can be retrieved inside the nacelle

near the rudder pushrod. We recommend tying the lead

around one of the formers so it can be ready when

assembling the model.

16EN

1 inch

(25mm)

OPTIONAL RETRACT DOOR INSTALLATION

 The installation of the retract doors is optional and will

require the use of a computer radio that has a gear door

sequencer. A separate gear door sequencer unit can also be

used. The included retract controller is not compatible with

the number of servos required for this particular model.

 The gear doors are purely cosmetic and have no effect on

how the model flies. They can also be retrofitted at any time.

79. Center the retract gear door servo. Place the servo arm on the

servo so it is parallel to the servo centerline.

80. When attaching the linkage to the servo arm, use the hole in

the arm that is 1 inch (25mm) from the center of the arm.

81. Use side cutters to remove the arm that extends away from

the servo, keeping the arm that extends over the servo.

Assemble the link for the gear door, then attach it to the servo

arm using an M3 x 15 button head screw, M3 washer and M3

lock nut. Use a 2mm hex wrench and 5.5mm nut driver.

78. Use a hobby knife and #11 blade to remove the covering

for the nose gear retract in the fuselage. Also remove the

covering for the gear door hinges.

82. Mount the servo in the opening. The holes for the servo will

need to be drilled and prepared as outlined in earlier sections

of this manual. The output of the servo will face toward the

front of the airframe.

83. Repeat the previous steps to mount the second servo. The

output will mount toward the front of the airframe.

 Using a Y-harness will not work to operate the gear doors, as

one door will open as the other gear door closes. A computer

radio must be programmed to operate the gear door servos.

 Do not mix any epoxy until instructed to do so.

84. Fit the hinges in the gear doors.

85. Fit the hinges into the pockets in the fuselage. The hinges will

be ﬂ ush with the bottom of the fuselage.

86. The gear doors will need to be adjusted to be centered over

the opening for the retract. A thin ruler or hobby knife can be

used to make small changes to their position. Once the ﬁ t has

been checked, the hinges can be secured using 30-minute

epoxy. Make sure to check the position of the gear doors

as the epoxy cures. Allow the epoxy to fully cure before

proceeding.

17 EN

OV-10 Bronco 30cc

87. Attach the linkage to the gear door using the M3 x 15 button

head screw. Tighten the screw using a 2mm hex wrench. Use

the radio system to set the throw of the servo to open and

close the gear door.

 It is essential that the servos are not over travelling and

loading the servos in either up or down positions. We advise

finding out where the mechanical stop is in the in the up and

down position and backing off the servo travel a few percent

in either position. A slight gap when closed, or less than a 90

degree angle when open, is better than damaging the servos.

 Repeat this section to install the remaining

gear doors and servos.

MAIN GEAR RETRACT INSTALLATION

88. Use small pliers to snap the e-clip in the groove for the gear

axle.

89. Slide a washer on the axle.

90. Apply a drop of light machine oil on the axle.

91. Check the opening in the wheel for any burrs and remove if

necessary. Slide the axle through the wheel. Slide the spacer

on the axle.

92. Fit the axle into the landing gear strut. Tighten the setscrew

using a 2mm hex wrench to secure the axle. Check that

the wheel can rotate freely. If not, determine the cause for

binding and correct before proceeding.

 Check for a flat spot at the end of the axle. If

there is not one, then make one using a flat file.

Not having the flat will allow the setscrew will slip

and the axle/wheel falling out of the aircraft.

 Prepare the remaining retract assembly for installation.

18EN

93. Slide an M4 lock washer on each of the four M4 x 25 button

head screws.

 When installing the retract in the nacelle, the strut

for the retract will face toward the fuselage.

94. Secure the retract in the nacelle using the four M4 x 25

button head screws prepared in the previous step.

 The retracts can be operated manually using the test button

on the retract box. We advise using the retract module to

test the retraction and extension of the retract with the leg

and wheel attached before tightening any of the hardware.

 Tighten the screws evenly. Tightening one at a time fully may

distort the retract frame slightly and cause operational issues.

95. Four M4 lock nuts are used inside the fuselage to complete

the retract installation. Tighten the hardware using a 2.5mm

hex wrench and 7mm nut driver.

96. Route the lead for the servo through the hole in the retract

bay.

97. Inside the nacelle, secure the retract lead so it won’t interfere

with the operation of the retract.

 Repeat this section to install the remaining main retract.

19 EN

OV-10 Bronco 30cc

NOSE GEAR RETRACT INSTALLATION

98. Use a hobby knife and #11 blade to remove the covering for

the nose gear retract in the fuselage.

99. Mount the steering servo in the retract servo opening using

four M3 x 12 button head screws. Apply a drop of threadlock

on each screw, then tighten the screws using a 2mm hex

wrench.

101. Use small pliers to snap the e-clip in the groove in the nose

gear axle. Slide the axle into the nose gear wheel fork.

100. Assemble the steering linkage and attach it to the servo using

an M3 x 15 button head screw, M3 washer and M3 lock nut.

Use a 2mm hex wrench and 5.5mm nut driver. Snap the ball

on the steering arm of the retract. Center the steering servo

and adjust the length of the linkage to center the nose gear.

 Make sure to adjust the servo travel so equal

defection is achieved in each direction. Also make

sure the servo is not over traveling as this may

damage the ball attached to the nose leg.

102. Apply a drop of light machine oil in the hole in the wheel.

103. Slide the wheel in position, then use the remaining e-clip to

secure the axle.

104. The completed assembly for the nose gear can be mounted in

the fuselage one the servo and wheel are installed.

105. Mount the nose gear in the fuselage using four M4 x 25

button head screws, an M4 lock washer and M4 lock nut.

Tighten the hardware using a 2.5mm hex wrench and 7mm

nut driver. Use a rubber band across the sides of the fuselage

to apply a very small amount of tension of the steering servo

lead. This will keep the lead from accidentally getting into the

retract mechanism during the operation of the retract.

20EN

6

5

/

8

inches (169mm)

ELECTRIC MOTOR INSTALLATION

 Skip this section when installing gas engines.

106. Attach the mount to the motor using the hardware included

with the motor. Use a drop of threadlock on each screw to

prevent them from vibrating loose.

107. Measure the length of the motor and record it.

108. Mark the position of the ﬁ rewall on the motor box so it can

be positioned after the epoxy has been applied. Remove the

bottom support from the motor box before proceeding.

109. Apply 30-minute epoxy to the areas of the motor box where

the ﬁ rewall will be positioned. Slide the ﬁ rewall in position

and allow the epoxy to cure before proceeding

 The required length of the motor and motor mount

is 6

5

/

8

inches (169mm). Position the firewall in

the motor box so the length of the box, plus the

length of the motor, total this dimension.

110. Use 30-minute epoxy to glue the triangle stock inside the

motor box against the ﬁ rewall. The triangle stock will require

trimming to ﬁ t tightly in the corners. Allow the epoxy to fully

cure before proceeding.

111. Use 30-minute epoxy to glue the bottom support in position.

Make sure to glue triangle stock under the brace at the

ﬁ rewall and the mount that ﬁ ts against the fuselage.

112. Place the mounting template on the ﬁ rewall. Use low-tack

tape to hold the template in position. Use a drill and 7/32-inch

(5.5mm) drill bit to drill the four holes in the ﬁ rewall to attach

the motor box.

114. Attach the motor box to the ﬁ rewall using the screws from the

previous step.

113. Slide an M5 lock washer, then an M5 washer on the M5 x 25

socket head screw. Prepare all four screws.

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