GREAT PLANES Cherokee .40 ARF, GPMA1033 Instruction Manual

Wingspan: 60 in [1520mm]
Wing Area: 606 in2 [39dm2]
Weight: 6.75 – 7.25 lb [3060 – 3290g]
Wing Loading: 26 – 28 oz/ft2 [79 – 85g/dm2]
Length: 46 in [1170mm]
Radio: 4-channel minimum with four to sev en

standard servos and standard size receiver
Engine: .40 – .46 cu in [7 – 7.5cc] two-stroke,
.56 cu in [9.2cc] four-stroke,
42-50-800kV brushless out-runner motor

INSTRUCTION MANUAL

Great Planes

®

Model Manufacturing Co. guarantees this kit to be free from def ects in both material and workmanship at the date of purchase.
This warranty does not cover an y component parts damaged by use or modifi cation. In no case shall Great Planes’ liability exceed the
original cost of the purchased kit. Further, Great Planes reserves the right to change or modify this warranty without notice.

In that Great Planes has no control over the fi nal assembly or material used for fi nal assembly , no liability shall be assumed nor accepted
for any damage resulting from the use by the user of the fi nal user-assembled product. By the act of using the user-assembled product,
the user accepts all resulting liability.

If the buyer is not prepared to accept the liability associated with the use of this product, the b uy er is advised to return this kit
immediately in new and unused condition to the place of purchase.

To make a warranty claim send the defective part or item to Hobby Services at the address below:

Hobby Services

3002 N. Apollo Dr., Suite 1

Champaign, IL 61822 USA

Include a letter stating your name, return shipping address, as much contact information as possible (daytime telephone number, fax
number, e-mail address), a detailed description of the problem and a photocopy of the purchase receipt. Upon receipt of the package
the problem will be evaluated as quickly as possible.

READ THROUGH THIS MANUAL BEFORE
STARTING CONSTRUCTION. IT CONTAINS
IMPORTANT INSTRUCTIONS AND WARNINGS

WARRANTY

CONCERNING THE ASSEMBLY AND USE OF
THIS MODEL.

Champaign, Illinois

[phone], Ext 5

[e-mail]

Entire Contents © Copyright 2008 GPMZ1033 for GPMA1033 V1.0

TABLE OF CONTENTS

INTRODUCTION ................................................................................2

AMA ...................................................................................................2

SAFETY PRECAUTIONS ..................................................................2

DECISIONS YOU MUST MAKE .........................................................3

Radio Equipment ..........................................................................3

Power System Recommendations ...............................................3

Propeller .......................................................................................4

Batteries & Charger ......................................................................4

ADDITIONAL ITEMS REQUIRED .....................................................4

Required Hardware & Accessories ..............................................4

Adhesives & Building Supplies .....................................................4

Optional Supplies & Tools ............................................................4

BUILDING STAND .............................................................................5

IMPORTANT BUILDING NOTES .......................................................5

ORDERING REPLACEMENT PARTS ...............................................5

COMMON ABBREVIATIONS ............................................................6

METRIC CONVERSIONS ..................................................................6

METRIC/INCH RULER .......................................................................6

KIT INSPECTION ...............................................................................7

KIT CONTENTS .................................................................................7

PREPARATIONS ................................................................................8

BUILD THE WING PANELS ...............................................................8

Install the Aileron & Flap Servos & Pushrods ..............................8

Fixed Flaps .................................................................................11

BUILD THE FUSELAGE .................................................................11

Install the Tail Surfaces...............................................................11

Install the Tail Servos & Pushrods ..............................................12

Glow Engine Installation .............................................................13

Brushless Motor Installation .......................................................16

Assemble & Install the Landing Gear .........................................18

FINISH THE MODEL ........................................................................20

Install the Receiver .....................................................................20

Install the Cowl, Spinner & Propeller ..........................................21

Install the Wing & Canopy Hatch ................................................22

Apply the Decals ........................................................................22

GET THE MODEL READY T O FL Y ..................................................22

Install and Operate the Motor Battery (Brushless Only).............22

Battery Precautions/Connecting Batteries .................................23

Check the Control Directions .....................................................23

Set the Control Throws ...............................................................23

Balance the Model (C.G.) ...........................................................24

Balance the Model Laterally .......................................................25

PREFLIGHT .....................................................................................25

Identify Your Model .....................................................................25

Charge the Batteries ..................................................................25

Balance Propellers .....................................................................25

Ground Check ............................................................................25

Range Check .............................................................................25

ENGINE SAFETY PRECAUTIONS ..................................................26

LITHIUM BATTERY HANDLING & USAGE ....................................26

AMA SAFETY CODE (excerpts) .....................................................26

CHECK LIST ....................................................................................27

FLYING .............................................................................................27

Fuel Mixture Adjustments ...........................................................27

Takeoff ........................................................................................27

Flight ..................................................................Back Cover Page

Landing ..............................................................Back Cover Page

Flaps ..................................................................Back Cover Page

easy to fl y and would be appropriate for beginners who
have mastered a trainer or for the veteran pilot who just
appreciates the rich history of the Cherokee.

For the latest technical updates or manual corrections to
the Cherokee .40 ARF visit the Great Planes web site at
www.greatplanes.com. Open the “Airplanes” link, then
select the Cherokee .40 ARF. If there is new technical
information or changes to this model, a “tech notice” box will
appear in the upper left corner of the page.

AMA

We urge you to join the AMA (Academy of Model Aeronautics)
and a local R/C club. The AMA is the gov erning body of model
aviation and membership is required to fl y at AMA clubs.
Though joining the AMA provides many benefi ts, one of the
primary reasons to join is liability protection. Coverage is not
limited to fl ying at contests or on the club fi eld. It e ven applies
to fl ying at public demonstrations and air shows. Failure to
comply with the Safety Code (excerpts printed in the back of
the manual) may endanger insurance coverage. Additionally,
training programs and instructors are available at AMA club
sites to help you get started the right way. There are over
2,500 AMA chartered clubs across the countr y. Contact the
AMA at the address or toll-free phone number below:

Academy of Model Aeronautics

5151 East Memorial Drive

Muncie, IN 47302-9252

Tele. [phone]

Fax [phone]

Or via the Internet at:

http://www.modelaircraft.org

IMPORTANT!!! T w o of the most important things you can do

to preserve the radio controlled aircraft hobby are to avoid
fl ying near full-scale aircraft and avoid fl ying near or over
groups of people.

PROTECT YOUR MODEL, Y OURSELF

& OTHERS....FOLLOW THESE

IMPORTANT SAFETY PRECAUTIONS

INTRODUCTION

Congratulations on your purchase of the Great Planes
Cherokee .40 ARF! We have designed this plane to be a
quick, fuss-free build by minimizing the amount of glue and
measuring that needs to be done for a typical ARF. With a
bolt-on, self-aligning tail section along with many other small
time-consuming tasks already complete, you can have your
Cherokee .40 ARF built in as little as 4 to 6 hours. Just like
its full-scale counterpart, the Cherokee .40 ARF is extremely

1. Your Cherokee .40 ARF should not be considered a toy,
but rather a sophisticated, working model that functions very
much like a full-size airplane. Because of its performance
capabilities, the Cherokee .40 ARF, if not assembled and
operated correctly, could possibly cause injury to yourself or
spectators and damage to property.

2. Y ou must assemble the model according to the instructions.
Do not alter or modify the model, as doing so may result in an
unsafe or unfl yable model. In a few cases the instructions may
differ slightly from the photos. In those instances the written
instructions should be considered as correct.

2

3. You must take time to build straight, true and strong.

4. You must use an R/C radio system that is in fi rst-class
condition, and a correctly sized engine and components
throughout the building process.

5. You must correctly install all R/C and other components
so that the model operates correctly on the ground and in
the air.

6. You must check the operation of the model before every
fl ight to insure that all equipment is operating and that the
model has remained structurally sound. Be sure to check
clevises or other connectors often and replace them if they
show any signs of wear or fatigue.

7. If you are not an experienced pilot or have not fl own
this type of model before, we recommend that you get the
assistance of an experienced pilot in your R/C club for
your fi rst fl ights. If you’re not a member of a club, your local
hobby shop has information about clubs in your area whose
membership includes experienced pilots.

DECISIONS YOU MUST MAKE

This is a partial list of items required to fi nish the Cherokee
.40 ARF that may require planning or decision making before
starting to build. Order numbers are provided in parentheses .

Radio Equipment

The Cherokee .40 ARF requires a minimum 4-channel radio
system with four to seven 44 oz.-in. [3.2 kg-cm] minimum
standard servos. Operational fl aps will require six servos.
If you are installing a glow engine, an additional standard
servo is required for the throttle.

In addition, two 9" [229mm] servo extensions are required
for the aileron servos. If you are using a radio system that
does not support mixing functions, two Y-harnesses will also
be required to connect the aileron servos and fl ap servos to
the receiver.

8. While this kit has been fl ight tested to exceed normal use,
if the plane will be used for extremely high stress fl ying, such
as racing, or if an engine larger than one in the recommended
range is used, the modeler is responsible for taking steps to
reinforce the high stress points and/or substituting hardware
more suitable for the increased stress.

9. WARNING: The cowl and wheel pants included in this kit
are made of fi berglass, the fi bers of which may cause eye,
skin and respiratory tract irritation. Never blow into a part
to remove fi berglass dust, as the dust will blow back into
your eyes. Always wear safety goggles, a particle mask and
rubber gloves when grinding, drilling and sanding fi berglass
parts. Vacuum the parts and the work area thoroughly after
working with fi berglass parts.

We, as the kit manuf acturer , pro vide you with a top quality,
thoroughly tested kit and instructions, but ultimately the
quality and fl yability of your fi nished model depends
on how you build it; therefore, we cannot in any way
guarantee the performance of your completed model,
and no representations are expressed or implied as to the
performance or safety of your completed model.

A charge jack receptacle is optional, but is useful for recharging
the receiver pack without removing the canopy hatch and
is shown in the assembly of the plane. Recommended part
numbers for the radio components are provided below:

❏ Futaba

®

S3003 Servo Standard (FUTM0031)

❏ Futaba S9001 Servo Aircraft Coreless BB

(optional, FUTM0075)

❏ Futaba 9" Servo Extension J (FUTM3910)
❏ Futaba 6" Dual Servo Extension J (FUTM4130)
❏ Ernst Charge Receptacle Futaba J FM (ERNM3001)

Power System Recommendations

The recommended engine/motor size for the Cherokee .40
ARF is a .40 to .46 cu in [7 to 7.5cc] two-stroke engine, .56
cu in [9.2cc] four-stroke engine, or a RimFire™ 42-50-800kV
brushless out-runner motor. If installing a two-stroke glow
engine, a Pitts muffl er is recommended. The stock muffl er
can also be used with a muffl er extension but additional
modifi cation to the fuselage and cowl would be necessary.
Engine and motor order numbers are provided below:

Remember: Take your time and follow the instructions to
end up with a well-built model that is straight and true.

❏ O.S.

®

.46 AX ABL w/Muffl er (OSMG0547)

❏ Bisson O.S. .46 SF/FX .50 SX Pitts Muffl er (BISG4046)
❏ O.S. Muffl er Extension #873 (OSMG2578) (Stock

muffl er only)

❏ Great Planes RimFire 42-50-800 out-runner

brushless (GPMG4700)

❏ Great Planes Brushless Motor Mount Medium

Motors (GPMG1255)

3

If using the recommended brushless motor, a 60A brushless
ESC is required:

❏ Great Planes Silver Series 60A brushless ESC high

volt (GPMM1850)

ADDITIONAL ITEMS REQUIRED

Required Hardware & Accessories

Propeller

If you are installing a glow engine, choose a prop based
on the engine manufacturer’s recommendation. If you are
installing the recommended RimFire brushless motor, we
suggest a 10" x 5 E or 11" x 5.5 E APC propeller. The 10" x 5 E
prop provides adequate power with a longer fl ight time. The
11" x 5.5 E provides excellent power for the Cherokee .40
ARF at the cost of a shorter fl ight time.

❏ APC 10" x 5 electric propeller (APCQ4120)
❏ APC 11" x 5.5 electric propeller (APCQ1055)

Batteries & Charger

For a brushless motor installation, one 3200mAh 11.1V
LiPo battery pack and one 3200mAh 7.4V LiPo battery pack
connected in series are recommended. Order numbers for
the battery packs and series connector are provided below:

❏ Great Planes LiPo 7.4V 3200mAh 20C discharge

w/balance (GPMP0622)

❏ Great Planes LiPo 3200mAh 11.1V 20C discharge

w/balance (GPMP0623)

❏ Great Planes Series Deans

A cell balancer is required for the LiPo battery packs
listed above:

❏ Great Planes ElectriFly Equinox

1to 5 (GPMM3160)
A suitable charger is also required. The Great Planes

PolyCharge4™ is designed for LiPo packs only; however, it
is able to charge four LiPo packs simultaneously. The Great
Planes Triton2™ charger will only charge one pack at a time;
howev er, it is capable of charging NiCd, NiMH, LiP o , and lead
acid batteries. Order n umbers for both are provided below:

®

U 2 to 1 adapter (GPMM3143)

™

LiPo cell balancer

This is the list of hardware and accessories required to
fi nish the Cherokee .40 ARF. Order numbers are provided
in parentheses:

❏ R/C foam rubber 1/4" [6mm] (HCAQ1000)
❏ 3' [900mm] standard silicone fuel tubing (GPMQ4131)

(glow engine installation only)

Adhesives & Building Supplies

This is the list of Adhesives and Building Supplies that are
required to fi nish the Cherokee .40 ARF:

❏ 1/2 oz. [15g] Thin Pro CA (GPMR6001)
❏ Pro

™

30-minute epoxy (GPMR6047)

❏ Masking tape (TOPR8018)
❏ Threadlocker threadlocking cement (GPMR6060)
❏ Denatured alcohol (for epoxy clean up)
❏ Drill bits: 1/16" [1.6mm], 5/64" [2mm], 3/32" [2.4mm],

3/16" [4.8mm]

❏ Dead Center

(glow engine installation only)

™

engine mount hole locator (GPMR8130)

❏ Great Planes tap & drill set 6-32 (GPMR8102) (glow

engine installation only)

❏ Tap handle (GPMR8120) (glow engine installation only)
❏ Small metal fi le
❏ #1 Hobby knife (HCAR0105)
❏ #11 Blades (5-pack, HCAR0211)
❏ Medium T-pins (100, HCAR5150)
❏ Top Flite
❏ Top Flite Hot Sock

®

MonoKote® sealing iron (TOPR2100)

™

iron cover (TOPR2175)

❏ 220-grit Sandpaper (glow engine installation only)
❏ Great Planes V elcro Hook & Loop 1" x 6" (2) (GPMQ4480)

(brushless installation only)

❏ Panel line pen (TOPQ2510)

Optional Supplies & Tools

❏ Great Planes PolyCharge4 DC only 4 output LiPo

charger (GPMM3015)

-or-

❏ Great Planes ElectriFly Triton2 DC comp peak

charger (GPMM3153)

Here is a list of optional tools that will help you build the
Cherokee .40 ARF:

❏ 1/2 oz. [15g] Thick Pro CA- (GPMR6013)
❏ 2 oz. [57g] Spray CA activator (GPMR6035)
❏ 4 oz. [113g] Aerosol CA activator (GPMR6034)
❏ CA applicator tips (HCAR3780)
❏ CA debonder (GPMR6039)
❏ Pro 6-minute epoxy (GPMR6045)
❏ Epoxy brushes 6, (GPMR8060)
❏ Mixing sticks (GPMR8055)
❏ Mixing cups (GPMR8056)

4

❏ Pliers with wire cutter (HCAR0630)
❏ Hobbico Duster

™

can of compressed air (HCAR5500)

❏ Switch & Charge jack mounting set (GPMM1000)
❏ Rotary tool such as Dremel

®

❏ Rotary tool reinforced cut-off wheel (GPMR8020)
❏ Servo horn drill (HCAR0698)
❏ Hobby Heat

™

micro torch II (HCAR0755)

❏ Precision magnetic prop balancer (TOPQ5700)
❏ AccuThrow
❏ C.G. Machine

™

defl ection gauge (GPMR2405)

™

(GPMR2400)

❏ Hobbico fl exible 18" ruler stainless steel (HCAR0460)
❏ Top Flite MonoKote trim seal iron (TOPR2200)
❏ Top Flite MonoKote heat gun (TOPR2000)
❏ Hobbico pin vise 1/16" collet w/6 Bits (HCAR0696)
❏ Hobbico 8-piece ball tip hex L wrench SAE (HCAR0520)
❏ Hobbico 7-piece ball tip hex L wrench Metric (HCAR0521)
❏ Great Planes clevis installation tool (GPMR8030)

BUILDING STAND

• Photos and sketches are placed before the step they
refer to. Frequently you can study photos in following steps
to get another view of the same parts.

• The stabilizer and wing incidences and engine thrust
angles have been factory-built into this model. However,
some technically-minded modelers may wish to check these
measurements anyway. To view this information visit the web
site at www.greatplanes.com and click on “Technical Data.”
Due to manufacturing tolerances which will have little or no
effect on the way your model will fl y, please expect slight
deviations between your model and the published values.

A building stand or cradle comes in handy during the build.
We use the Robart Super Stand II (ROBP1402) for all our
projects in R&D, and it can be seen in pictures throughout
this manual.

IMPORTANT BUILDING NOTES

• When you see the term test fi t in the instructions, it
means that you should fi rst position the part on the assembly
without using any glue, then slightly modify or custom fi t
the part as necessary for the best fi t.

• Whenever the term glue is written you should rely upon
your experience to decide what type of glue to use. When
a specifi c type of adhesive works best for that step, the
instructions will make a recommendation.

• Whenever just epoxy is specifi ed you may use either
30-minute (or 45-minute) epoxy or 6-minute epoxy. When
30-minute epoxy is specifi ed it is highly recommended that
you use only 30-minute (or 45-minute) epoxy, because you
will need the working time and/or the additional strength.

ORDERING REPLACEMENT PARTS

Replacement parts for the Great Planes Cherokee .40 ARF are
available using the order n umbers in the Replacement P arts
List that follows. The f astest, most economical service can be
provided by your hobby dealer or mail-order company.

To locate a hobby dealer, visit the Hobbico web site at
www.hobbico.com. Choose “Where to Buy” at the
bottom of the menu on the left side of the page. Follow the
instructions provided on the page to locate a U.S., Canadian
or International dealer.

Parts may also be ordered directly from Hobby Services by
calling [phone], or via facsimile at [phone],
but full retail prices and shipping and handling charges will
apply. Illinois and Nevada residents will also be charged
sales tax. If ordering via fax, include a Visa® or MasterCard®
number and expiration date for payment.

Mail parts orders and payments by personal check to:

Hobby Services

3002 N. Apollo Drive, Suite 1

Champaign, IL 61822

Be certain to specify the order number exactly as listed in
the Replacement Parts List. Payment by credit card or
personal check only; no C.O.D.

5

If additional assistance is required for any reason contact Product
Support by e-mail at [e-mail], or
by telephone at [phone].

COMMON ABBREVIATIONS

Replacement Parts List

Description How to Purchase

Missing pieces Contact Product Support
Instruction manual Contact Product Support
Full-size plans Not available

Contact your hobby supplier for the following parts:

GPMA3240 Wing
GPMA3241 Fuselage
GPMA3242 Vertical Stabilizer & Rudder
GPMA3243 Horizontal Stabilizer & Elevator
GPMA3244 Canopy/Hatch
GPMA3245 Wheel Pants
GPMA3246 Landing Gear
GPMA3247 Cowl
GPMA3248 Wing Tube
GPMA3249 Decal Sheet

Stab = Horizontal Stabilizer
Fin = Vertical Fin
LE = Leading Edge
TE = Trailing Edge
LG = Landing Gear
Ply = Plywood
" = Inches
mm = Millimeters
SHCS = Socket Head Cap Screw
ESC = Electronic Speed Control

METRIC CONVERSIONS

1" = 25.4mm (conversion factor)

1/64" = .4mm
1/32" = .8mm
1/16" = 1.6mm
3/32" = 2.4mm
1/8" = 3.2mm
5/32" = 4.0mm
3/16" = 4.8mm
1/4" = 6.4mm
3/8" = 9.5mm
1/2" = 12.7mm
5/8" = 15.9mm

3/4" = 19.0mm
1" = 25.4mm
2" = 50.8mm
3" = 76.2mm
6" = 152.4mm
12" = 304.8mm
18" = 457.2mm
21" = 533.4mm
24" = 609.6mm
30" = 762.0mm
36" = 914.4mm

6

KIT INSPECTION

KIT INSPECTION

KIT CONTENTS

Before starting to build, take an inventory of this kit to make sure it is complete and inspect the parts to make sure they
are of acceptable quality. If any parts are missing or are not of acceptable quality, or if you need assistance with assembly,
contact Product Support. When reporting defective or missing parts, use the part names exactly as they are written in
the Kit Contents list.

Great Planes Product Support:

3002 N. Apollo Drive, Suite 1

Champaign, IL 61822

Telephone: [phone], ext. 5

Fax: [phone]

E-mail: [e-mail]

KIT CONTENTS

1

3

5

4

7

6

9

10

8

9

14

KIT CONTENTS

11

2

12

13

15

1 Cowl
2 Fuselage
3 Spinner
4 Fuel Tank
5 Engine Mount
6 Main Landing Gear (L&R)
7 Nose Gear Wire
8 Nose Wheel Pant
9 Main Wheel Pants (L&R)

10 2-1/2" [64mm] Wheels (3)
11 Aluminum Wing Joiner Tube
12 Horizontal Stabilizer & Elevator
13 Vertical Fin & Rudder
14 Right Wing Panel w/Flap & Aileron
15 Left Wing Panel w/Flap & Aileron

77

PREPARATIONS

❏ 1. If y ou hav e not done so already, remov e the major parts

of the kit from the box and inspect for damage. If any parts
are damaged or missing, contact Product Support at the
address or telephone number listed in the “Kit Inspection”
section on page 7.

❏ 2. Carefully remove the tape and separate all the

components. Use a covering iron with a covering sock on
medium/high heat to tighten the covering if necessary.
Apply pressure over sheeted areas to thoroughly bond the
covering to the wood.

over the rectangles with the grain direction perpendicular to
the covers. Allow the epoxy to cure undisturbed.

❏ ❏ 2. Cut three arms from a four-armed servo arm for the

aileron servo. Enlarge the outer hole of the remaining arm
with a 5/64" [2mm] drill bit.

BUILD THE WING PANELS

Install the Aileron & Flap Servos & Pushr ods

Before completing this section, confi rm that the servos
that you will be using will properly fi t between the servo

mounting block locations on the aileron and fl ap servo
hatch covers. Make adjustments as necessary for your

brand of servos. The block locations shown in this section
will fi t a standard size Futaba brand servo.

❏ ❏ 1. Tr im the covering from the servo arm cutouts in the

aileron and fl ap (if you will have operational fl aps) servo hatch
covers. Use epoxy to glue the 3/4" x 3/4" x 5/16" [19 x 19 x 8mm]
hardwood servo mounting blocks to the inside of the aileron
and fl ap hatch covers. Be sure that the blocks are aligned

❏ ❏ 3. Attach a 9" [229mm] servo extension to the aileron

servo and secure the connector using tape or heat shrink
tubing (not included). Center the servo with your radio
system and install the servo arm to the servo perpendicular
to the servo case as shown. Be sure to reinstall the servo
arm screw into the servo.

❏ ❏ 4. P osition the servo against the underside of the aileron

servo hatch cover between the mounting blocks. Shim the
aileron servo away from the hatch cover approximately 3/64"
[1.2mm] to isolate it from vibration (a business card folded in
thirds works well for this). Drill 1/16" [1.6mm] holes through
the mounting tabs on the servo case into the blocks. Thread a
servo mounting screw (included with the servo) into each hole
and back it out. Apply a drop of thin CA to each hole to harden
the wood. When the CA has dried, install the servo onto the
hatch cover using the hardware supplied with the servo.

8

8

❏ ❏ 5. Use the string taped inside the aileron serv o ba y to

pull the servo lead through the wing ribs.

❏ ❏ 6. Thread a #2 x 3/8" [9.5mm] self-tapping screw into

each servo hatch mounting hole in the wing panel and back it
out. Apply a drop of thin CA to each hole to harden the w ood.
Install the aileron hatch cover to the wing panel using four
#2 x 3/8" [9.5mm] self-tapping screws and four #2 fl at washers.

❏ ❏ 8. P osition the control horn ov er the plywood plate in the

aileron (if you cannot see it, hold the aileron at a shallow angle
in good lighting or use a small pin to puncture the covering),
using the position of the servo arm as a guide. Align the holes
in the control horns directly over the aileron hinge line and
mark the location of the control horn mounting holes.

❏ ❏ 7. Thread a nylon clevis 20 complete turns onto a

4" [102mm] pushrod. Slide a silicone clevis retainer onto the
clevis and connect the clevis to the outer hole of a control horn.

❏ ❏ 9. Drill 1/16" [1.6mm] holes at the marks you made

through the plywood plate. Do not drill all the way through
the aileron! Thread a #2 x 1/2" [13mm] self-tapping screw
through each hole and back it out. Apply a couple drops of
thin CA glue to each hole to harden the wood. When the glue
has dried, install the control horn onto the aileron using two
#2 x 1/2" [13mm] self-tapping screws.

9