Great Planes GPMA1320 User Manual

Great Planes®Model Manufacturing Co. guarantees this kit to

be free from defects in both material and workmanship at the date
of purchase. This warranty does not cover any component parts
damaged by use or modification.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 final assembly or
material used for final assembly, no liability shall be assumed nor
accepted for any damage resulting from the use by the user of the
final user-assembled product. By the act of using the user­assembled 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 buyer 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 this address.

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 THIS MANUAL BEFORE STARTING
CONSTRUCTION. IT CONTAINS IMPORTANT
INSTRUCTIONS AND WARNINGS CONCERNING
THE ASSEMBLY AND USE OF THIS MODEL.

GPMZ0294 for GPMA1320 V1.0Entire Contents © Copyright 2004

Champaign, Illinois

Telephone: [phone] ext. 5

[e-mail]

INSTRUCTION MANUAL

WARRANTY

Wingspan: 63 in [1600mm]
Wing Area: 775 sq in [50 dm2]
Weight: 7.25 - 8.25 lb [3290 - 3740 g]
Wing Loading: 21.5 - 24.5 oz/sq ft [65 - 75 g/dm2]
Length: 56.5 in [1435mm]
Radio: 4-channel, 5 servos
Engine: .61cu in [10cc] two-stroke,

.91cu in [15cc] four-stroke

Hobby Services

3002 N. Apollo Dr. Suite 1

Champaign IL 61822

USA

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

IMAA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Scale Competition . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . 3

HARDWARE AND ACCESSORIES . . . . . . . . . . . . . . . . 3

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

Engine Recommendations . . . . . . . . . . . . . . . . . . . . . 3

Additional Items Required . . . . . . . . . . . . . . . . . . . . . . 4

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

IMPORTANT BUILDING NOTES . . . . . . . . . . . . . . . . . . 4

KIT INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Ordering Replacement Parts. . . . . . . . . . . . . . . . . . . . 6

PREPARATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

BUILD THE WING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Install the Ailerons . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Install the Aileron Servos and Pushrods . . . . . . . . . . . 8

Join the Wings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

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

Install the Stab, Elevators and Rudder . . . . . . . . . . . 11

Install the Landing Gear and Wheel Pants . . . . . . . . . 12

Install the Engine, Fuel Tank and Throttle Ser vo . . . . 13

Install the Cowl. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Install the Radio System. . . . . . . . . . . . . . . . . . . . . . 17

FINAL TOUCHES . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

GET THE MODEL READY TO FLY . . . . . . . . . . . . . . . 20

Check the Control Directions . . . . . . . . . . . . . . . . . . 20

Set the Control Throws. . . . . . . . . . . . . . . . . . . . . . . 21

Balance the Model (C.G.) . . . . . . . . . . . . . . . . . . . . . 21

Balance the Model Laterally . . . . . . . . . . . . . . . . . . . 22

PREFLIGHT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Identify Your Model . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Charge the Batteries. . . . . . . . . . . . . . . . . . . . . . . . . 22

Balance Propellers . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Ground Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Range Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

ENGINE SAFETY PRECAUTIONS . . . . . . . . . . . . . . . 23

AMA SAFETY CODE . . . . . . . . . . . . . . . . . . . . . . . . . 23

CHECK LIST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

FLYING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Takeoff . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Flight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Landing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

The Great Planes

®

“Little Toni” ARF is a great flying
reproduction of the 1940’s racer. Not only does it have the
great looks but it is also a pleasure to fly.You will be amazed
at how fast it flies and yet slows to a crawl for landing.

For the latest technical updates or manual corrections to the
Little Toni visit the Great Planes web site at

www.greatplanes.com. Open the “Airplanes” link, then

select the Little Toni 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.

The Great Planes Little Toni is an excellent sport-scale
model and is eligible to fly in IMAA events. The IMAA
(International Miniature Aircraft Association) is an
organization that promotes non-competitive flying of giant­scale models. If you plan to attend an IMAA event, obtain a
copy of the IMAA Safety Code by contacting the IMAA at
the address or telephone number below, or by logging on to
their web site at:

www.fly-imaa.org/imaa/sanction.html.

IMAA

205 S. Hilldale Road

Salina, KS 67401

[phone]

Though the Great Planes Little Toni is an ARF and may not have
the same level of detail as an “all-out” scratch-built competition
model, it is a scale model nonetheless and is therefore eligible to
compete in the

Fun Scale

class in AMA competition (we receive
many favorable reports of Great Planes ARF’s in scale
competition!).In Fun Scale, the “builder of the model”rule does not
apply. To receive the five points for scale documentation, the only
proof required that a full size aircraft of this type in this
paint/markings scheme did exist is a single sheet such as a kit box
cover from a plastic model, a photo , or a profile painting, etc.If the
photo is in black and white, other written documentation of color
must be provided.Contact the AMA for a rule book with full details.

If you would like photos of the full-size Little Toni for scale
documentation, or if you would like to study the photos to
add more scale details, photo packs are available from:

Bob’s Aircraft Documentation

3114 Y uk on Av e

Costa Mesa, CA 92626

Telephone: [phone]

Fax:[phone]

e-mail: www.bobsairdoc.com

Scale Competition

IMAA

INTRODUCTIONTABLE OF CONTENTS

2

1.Your Little Toni 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 Little Toni, 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 unflyable model. In a few cases the instructions may
differ slightly from the photos. In those instances the written
instructions should be considered as correct.

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

4. You must use an R/C radio system that is in first-class
condition, and a correctly sized engine and components
(fuel tank, wheels, etc.) 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
flight 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 already an experienced R/C pilot, you
should fly the model only with the help of a competent,
experienced R/C pilot.

8.While this kit has been flight tested to exceed normal use,
if the plane will be used for extremely high stress flying,
such as racing, the modeler is responsible for taking steps
to reinforce the high stress points.

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

If you have not flown this type of model before, we
recommend that you get the assistance of an experienced
pilot in your R/C club for your first flights. 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.

In addition to joining an R/C club, we strongly recommend y ou
join the AMA (Academy of Model Aeronautics). AMA
membership is required to fly at AMA sanctioned clubs.There
are over 2,500 AMA chartered clubs across the country.
Among other benefits, the AMA provides insurance to its
members who fly at sanctioned sites and events. Additionally,
training programs and instructors are available at AMA club
sites to help you get started the right way. 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

Four channel radio
Four 54 oz-in servos and one 30 oz-in servo.
Two 6" [150mm] servo extension (HCAM2701 for Futaba)
Y-harness (HCAM2751 for Futaba)
500 mAh battery or greater

We have installed both a two and a four stroke engine in our
prototypes.The two-stroke engine requires much of the cowl to
be cut away while the f our-strok e maintains most of the integrity
of the cowl.If a more “scale”look is desired, we recommend the
four-stroke engine option over the two-stroke.

.61cu in [10cc] two-stroke,
.91cu in [15cc] four-stroke

Engine Recommendations

Radio Equipment

HARDWARE AND ACCESSORIES

NOTE:We, as the kit manuf acturer , provide y ou with a top quality

kit and great instructions, but ultimately the quality of your
finished 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.

PRO TECT YOUR MODEL,Y OURSELF

& OTHERS...FOLLOW THESE

IMPORTANT SAFETY PRECAUTIONS

3

4

The following is the list of hardware and accessories
required to finish the Little Toni.Order numbers are pro vided
in parentheses.

❏ R/C foam rubber (1/4" [6mm] - HCAQ1000, or 1/2"

[13mm] - HCAQ1050)

❏ William’s Brother’s #626 1/4-scale spor tsman pilot

(WBRQ2626)

❏ 1/2 oz. [15g] Thin Pro™CA (GPMR6001)
❏ 1 oz. [30g] Medium Pro CA+ (GPMR6008)
❏ Pro 30-minute epoxy (GPMR6047)
❏ Pro 6-minute epoxy (GPMR6045)
❏ Drill bits: 1/16" [1.6mm], 5/64" [2mm], 3/32" [2.4mm],

1/8" [3.2mm], 3/16" [4.8mm], 9/64" [3.6mm]

❏ 8-32 tap and drill set (GPMR8103)
❏ #1 Hobby knife (HCAR0105)
❏ #11 blades (5-pack, HCAR0211)
❏ Medium T-pins (100, HCAR5150)
❏ Top Flite®MonoKote®sealing iron (TOPR2100)
❏ CA applicator tips (HCAR3780)
❏ Propeller (as recommended by the engine

manufacturer)

Here is a list of optional tools mentioned in the manual that
will help you build the Little Toni.

❏ 2 oz. [57g] spray CA activator (GPMR6035)
❏ R/C-56 canopy glue (JOZR5007)
❏ CA debonder (GPMR6039)
❏ Epoxy brushes (6, GPMR8060)
❏ Mixing sticks (50, GPMR8055)
❏ Mixing cups (GPMR8056)
❏ 36" metal ruler (HCAR0475)

❏ Curved-tip canopy scissors for trimming plastic parts

(HCAR0667)

❏ Robart Super Stand II (ROBP1402)

❏ 18" x 24" [460 x 610mm] Builder’s Cutting Mat

(HCAR0455)

❏ Hobbico®Duster™can of compressed air (HCAR5500)
❏ Masking tape (TOPR8018)
❏ Threadlocker thread locking cement (GPMR6060)
❏ Denatured alcohol (for epoxy clean up)
❏ Switch & Charge Jack Mounting Set (GPMM1000)
❏ Rotary tool such as Dremel

®

❏ Rotary tool reinforced cut-off wheel (GPMR8200)
❏ Servo horn drill (HCAR0698)
❏ Dead Center™Engine Mount Hole Locator

(GPMR8130)

❏ AccuThrow™Deflection Gauge (GPMR2405)
❏ CG Machine™(GPMR2400)
❏ Precision Magnetic Prop Balancer™(TOPQ5700)

There are two types of screws used in this kit:
Sheet metal screwsare designated by a number and a length.

For example #6 x 3/4"

This is a number six screw that is 3/4" long.

Machine screws are designated by a number , threads per
inch, and a length.

For example 4-40 x 3/4"

This is a number four screw that is 3/4" long with forty
threads per inch

.

·

When you see the term

test fit

in the instructions, it
means that you should first position the part on the
assembly without using any glue, then slightly modify
or

custom fit

the part as necessar y for the best fit.

·

Whenever the term

glue

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

·

Whenever just

epoxy

is specified you may use

either

30­minute (or 45-minute) epoxy or6-minute epoxy. When
30-minute epoxy is specified 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.

·

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 Little Toni ARF is factory-covered with Top Flite

®

MonoKote®film. Should repairs ever be required,
MonoKote can be patched with additional MonoKote
purchased separately. MonoKote is packaged in six-foot
rolls, but some hobby shops also sell it by the foot. If only
a small piece of MonoKote is needed for a minor patch,
perhaps a fellow modeler would give you some.
MonoKote is applied with a model airplane covering iron,
but in an emergency a regular iron could be used. A roll
of MonoKote includes full instructions for application.
Following are the colors used on this model and order
numbers for six foot rolls.

True Red (TOPQ0227)

(continued on page 6)

Important Building Notes

Optional Supplies and Tools

Additional Items Required

5

PARTS PHOTOGRAPHED

1. Canopy

2. Cowl

3. Fuselage

4. Engine Mount

5. Landing Gear

6.Wheel Pants

7.Wheels

8.Horizontal Stab & Elevators

9. Rudder

10. Fuel T ank

11. Spinner & Backplate

12.Tail Wheel Assembly

13. Left Wing & Aileron

14. Right Wing & Aileron

15.Wing Joiner

16.Wing Bolt Plate

Qty

5/32" x 2" Axle. . . . . . . . . . . . . . . . 2

Brass Body EZ Connector. . . . . . . 2

4-40 Blind Nuts . . . . . . . . . . . . . . . 4

4-40 nut . . . . . . . . . . . . . . . . . . . . 1

8-32 Blind Nut. . . . . . . . . . . . . . . . 8

5/16 - 24 Lock Nut . . . . . . . . . . . . 2

1/4-20 Blind Nuts. . . . . . . . . . . . . . 2

Large Nylon Control Horn . . . . . . . 5

Nylon Torque Rod Bearing. . . . . . . 1

1/4-20 Nylon Wing Bolt . . . . . . . . . 2

Nylon Clevis . . . . . . . . . . . . . . . . . 5

Nylon Retainer . . . . . . . . . . . . . . . 2

2" x 9" Hinge Material . . . . . . . . . . 1

FasLink. . . . . . . . . . . . . . . . . . . . . 4

Grey Plastic Outer Pushrod 24". . . 4

Silicone Clevis Retainer. . . . . . . . . 5

2-56 x 5/8" machine Screw. . . . . . 10

6-32 X 1/8" Set Screw . . . . . . . . . 2

6-32 x 1/4"SHCS. . . . . . . . . . . . . . 4

4-40 set screw. . . . . . . . . . . . . . . . 1

#2 x 3/8" Sheet Metal Screw. . . . . 12

Qty

#4 x 3/8" SMS. . . . . . . . . . . . . . . . 4

4-40 x 1/2" machine screw. . . . . . . 4

#2 x3/8" Wood Screw . . . . . . . . . . 4

8-32 x 1 1/4" SHCS. . . . . . . . . . . . 4

8-32 x 1" SHCS. . . . . . . . . . . . . . . 4

4-40 x 1/8" SHCS . . . . . . . . . . . . . 2

8-32 x 3/4" FH machine screw . . . . 4

3/32" Wheel Collar. . . . . . . . . . . . . 1

5/32" Wheel Collar. . . . . . . . . . . . . 6

1 1/4" tailwheel . . . . . . . . . . . . . . . 1

.074 wire Threaded 1 End 36". . . . 4

.074 x 6" Pushrod Wire . . . . . . . . . 2

4-40 x 12" thread wire . . . . . . . . . . 1

#4 Lock Washer . . . . . . . . . . . . . . 4

#4 flat washers . . . . . . . . . . . . . . . 8

#2 Flat Washers . . . . . . . . . . . . . . 12

#8 Lock Washers. . . . . . . . . . . . . . 8

#8 Flat Washers . . . . . . . . . . . . . . 8

Parts Layout

Before starting to build, take an inv entory 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 on this page.

Great Planes Product Support

3002 N Apollo Drive, Suite 1

Champaign, IL 61822

Telephone: [phone], ext. 5

Fax: [phone]

E-mail: [e-mail]

13

15

16

9

6

4

5

10

11

12

1

2

3

8

7

14

PARTS NOT PHOTOGRAPHED

KIT INSPECTION

(continued from page 4)

·

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 greatplanes.com and click on
“Technical Data.” Due to manufacturing tolerances, which
will have little or no effect on the way your model will fly,
please expect slight deviations between your model and
the published values.

IMPORTANT INFORMATION ABOUT

WORKING WITH FIBERGLASS

If you have never worked with fiberglass there are a few
basic things you should be aware of.

1. When cutting fiberglass, be sure you are cutting the
correct place. Unlike wood, you are not able to go back and
easily fix a mistake.

2.Whenever you are gluing a part to the inside of fiberglass it is
important to roughen the inside surface of the fiberglass with
220-grit sandpaper, then wipe the area with rubbing alcohol.
The molding process leaves a waxy residue that can prevent a
good bond between the glue and the parts being glued.

3.If you do not ha ve a high-speed motor tool such as a Dremel

™

tool you should consider purchasing one or borrowing one from
a fellow modeler .This, combined with a fiberglass cut-off wheel,
will be extremely helpful in the assembly process.

WARNING:The cowl, wheel pants and fuselage included in
this kit are made of fiberglass, the fibers of which may cause
eye, skin and respiratory tract irritation. Never blow into a
part to remove fiberglass 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
fiberglass parts. Vacuum the parts and the work area
thoroughly after working with fiberglass parts.

Replacement parts for the Great Planes Little Toni ARF are
available using the order n umbers in the Replacement Parts List
that follows. The fastest, most economical service can be
provided by your hobby dealer or mail-order company. Parts
may also be ordered directly from Hobby Services, but full retail
prices and shipping and handling charges will apply. Illinois and
Nevada residents will also be charged sales tax.

To locate a hobby dealer, visit the Hobbico web site at
www.hob bico .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.If a hobby shop is not available, replacement parts may
also be ordered from Tower Hobbies at www .to werhobbies.com,
or by calling toll free [phone], or from Hobby Services by
calling [phone], or via facsimile at [phone]. 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.

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

[e-mail]

Replacement Parts List

Or

der Number Description How to purchase

GPMA2400 . . . . . Wing Kit . . . . . . . . . .Hobby Supplier

GPMA2401 . . . . . Fuse Kit . . . . . . . . . .Hobby Supplier

GPMA2404 . . . . . Tail Set . . . . . . . . . .Hobby Supplier

GPMA2402 . . . . . Cowl . . . . . . . . . . . .Hobby Supplier

GPMA2405 . . . . . Canopy . . . . . . . . . .Hobby Supplier

GPMA2403 . . . . . Landing Gear . . . . . .Hobby Supplier

GPMA2406 . . . . . Wheel Pants . . . . . .Hobby Supplier

GPMA2407 . . . . . Spinner . . . . . . . . . .Hobby Supplier

GPMA2408 . . . . . Decal Sheet . . . . . . .Hobby Supplier

Missing pieces. . . . . Product Support

Instruction manual . . Product Suppor t

Full-size plans . . . . . Not available

Ordering Replacement Parts

1/64" = .4mm
1/32" = .8mm
1/16" = 1.6mm
3/32" = 2.4mm

1/8" = 3.2mm
5/32" = 4mm
3/16" = 4.8mm

1/4" = 6.4mm

3/8" = 9.5mm

1/2" = 12.7mm

5/8" = 15.9mm

3/4" = 19mm

1" = 25.4mm
2" = 50.8mm
3" = 76.2mm

6" = 152.4mm
12" = 304.8mm
15" = 381mm
18" = 457.2mm
21" = 533.4mm
24" = 609.6mm
30" = 762mm
36" = 914.4mm

1" = 25.4mm (conversion factor)

Metric Conversions

6

❏ 1. If you have not done so already, remove the major

parts of the kit from the box and inspect for damage. If any
parts are damaged or missing, contact Product Suppor t at
the address or telephone number listed in the “Kit
Inspection” section on page 5.

❏ 2. Carefully remove the tape and separate the ailerons

from the wing and the elevators from the stab. Use a
covering iron with a covering sock on high heat to tighten
the covering if necessary. Apply pressure over sheeted
areas to thoroughly bond the covering to the wood.

Do the right wing first so your work matches the
photos the first time through.You can do one wing at a
time, or work on them together.

❏❏1. Dr ill a 3/32" [2.4mm] hole, 1/2" [13mm] deep in the

center of each hinge slot to allow the CA to “wick”in. Follow­up with a #11 blade to clean out the slots.
Hint: If you have one, use a high-speed rotary tool to drill
the holes.

❏❏2.Use a sharp #11 blade to cut a strip of covering from

the hinge slots in the wing and aileron.

❏❏3. Cut five 3/4" x 1" [19 x 25mm] hinges from the CA

hinge strip. Snip off the cor ners so they go in easier.

❏❏4. Test fit the ailerons to the wing with the hinges. If

the hinges don’t remain centered, stick a pin through the
middle of the hinge to hold it in position.

❏❏5. Remove any pins you may have inserted into the

hinges. Adjust the aileron so there is a small gap between the
LE of the aileron and the wing. The gap should be small, just
enough to see light through or to slip a piece of paper through.

❏❏6. Apply six drops of thin CA to the top and bottom of

each hinge. Do not use CA accelerator. After the CA has
fully cured, test the hinges by pulling on the aileron.

❏ 7. Repeat steps 1- 6 for the left wing panel.

Install the Ailerons

BUILD THE WING

PREPARATIONS

7

❏❏1. Installing the ser vos in the wing will require the use

of one 6" [152mm] servo extension for each aileron. One
Y-harness connector is required and is used to allow the
aileron servos to plug into one slot in your receiver.You may
have a computer radio that allows you to plug the servos
into separate slots and mix them together through the radio
transmitter. If you choose to mix them with the radio rather
than the Y-harness, refer to the instructions with your
particular brand of radio.

❏❏2. Remove the tape holding the servo cover to the

fuselage. Locate two 1/2" x 1/2" x 3/4" [13 x13 x 19mm]
hardwood blocks.Place the blocks against the sides of your
aileron servo. When positioning the blocks they should be
slightly higher than the servo case. Drill a 1/16" [1.6mm]
hole through the blocks for the servo screws. Using the
hardware included with your radio system, screw the servos
to the two blocks.

❏❏3. Apply 6-minute epoxy to each block. Position the

blocks so that the servo arm is centered over the opening in
the cover. Clamp the blocks to the cover .When the glue has
cured remove the clamps.

❏❏4. Mark the center of the hardwood blocks on the

cover. Drill a 1/16" [1.6mm] hole through the marks, drilling
through the blocks. Install a #2 x 3/8" [9mm] wood screw
into each of the holes tightening them against the cover.

❏❏5. Attach the servo extension to the aileron servo.

Secure the connectors together using a large piece of heat
shrink tubing, tape or other method.

❏❏6. Located in the wing in the ser vo compar tment, a

string is taped to the wing skin. Tie the string to the end of
the servo wire.Pull the servo wire through the wing with the
string.Feed the servo wire out the hole in the top of the wing
center section.Tape the servo wire to the wing to prevent it
from falling back into the wing.

❏❏7. Center the servo and install a ser vo arm as shown.

Test fit the servo cover into the wing.Depending on the size
and mounting position of your particular servo you may
need to trim away some of the wood edge the cover rests
on.T rim as needed to allow the servo cov er to be positioned
properly in the wing.

Install the Aileron Servos & Pushrods

8

❏❏8. Place the cover in place on the wing. Drill a 1/16"

[1.6mm] hole through each of the pre-drilled mounting
holes. Remove the cover from the wing. Install and remove
a #2 x 3/8" [9mm] sheet metal screw into each of the four
holes. Inser t a drop of thin CA into the holes to harden the
wood.After the clue has cured, install the cover with four #2
x 3/8" [9mm] sheet metal screws and four #2 flat washers.

❏❏9. Position a large nylon control horn on the aileron,

positioning it as shown in the sketch and aligning it with the
servo. Mark the location for the screw holes. Drill through
the marks you made with a 1/16" [1.6mm] drill bit, drilling
through the aileron. Secure the control horn to the aileron
with two 2-56 x 5/8" [16mm] machine screws and the nylon
mounting plate.

❏❏10. Locate a .074" x 6" [.074" x 152mm] pushrod wire

threaded on one end. Screw a nylon clevis onto the
threaded end of the wire 20 full turns.Install a silicone clevis
keeper onto the clevis, then install the clevis in the second
hole from the end of the aileron control horn.

❏❏11. Be sure the aileron ser vo is centered. Enlarge the

first hole in the servo arm with a Hobbico Servo Horn Drill
(or a #48 or 5/64" [2mm] drill bit). Center the aileron and
align the wire pushrod with the hole in the end of the servo
arm. Using a marker, mark the location where the wire
aligns with the hole in the servo arm. On that mark make a
90 degree bend. From the bend measure an additional
3/16" [4.8mm] then cut off the excess pushrod wire.

❏❏12. Install the wire into the hole in the servo arm using

a nylon FasLink as shown in the sketch.

❏ 13. Repeat steps 1-12 for the left wing panel

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