Great Planes GPMA1305 User Manual

WARRANTY

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. Fur ther, 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 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 buyer is advised to return this kit
immediately in new and unused condition to the place of purchase.

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

GPMZ0216 for GPMA1305 V1.0 Entire Contents © Copyright 2002

1610 Interstate Drive Champaign, IL 61822

[phone], Ext. 2

[e-mail]

INSTRUCTION MANUAL

Wingspan: 78.5 in [1995mm]
Wing Area: 1180 sq in [76 dm

2

]

Weight: 14.25 – 16.5 lb [6500g – 7500g]
Wing Loading: 27.8 oz/sq ft [85g/dm

2

]

Length: 70 in [1780mm]
Radio: 4-channel minimum (7 to 8 servos)
Engine: 1.60 to 2.10 cu in [25 to 35cc] 2-stroke,

2.00 to 3.00 cu in [33 to 50cc] 4-stroke,

2.5 to 3.8 cu in [41 to 65cc] Gas

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

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

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

DECISIONS YOU MUST MAKE BEFORE

BEGINNING TO BUILD .....................................................3

Radio Equipment.........................................................4

Engine Recommendations...........................................4

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

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

Adhesives & Building Supplies....................................5

Optional Supplies & Tools............................................5

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

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

ORDERING REPLACEMENT PARTS...............................6

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

BUILDING INSTRUCTIONS..............................................8

Preparations.................................................................8

ASSEMBLE THE WING.....................................................8

Hook up the Ailerons...................................................8

Mount the Wing on the Fuselage...............................11

ASSEMBLE THE FUSELAGE.........................................11

Install the Servo Tray .................................................11

Engine Mounting Preparations ..................................12

Install the Engine.......................................................13

Install a Glow Engine.................................................13

Install a Gas Engine ..................................................15

Install the Cowl ..........................................................18

Install the Tail Surfaces..............................................19

Installing the Landing Gear........................................23

Finish the Radio Installation ......................................26

Finish the Cockpit......................................................27

Apply the Decals ........................................................27

GET THE MODEL READY TO FLY..................................27

Check the Control Directions.....................................27

Set the Control Throws..............................................28

Balance the Model (C.G.)..........................................28

Balance the Model Laterally......................................29

PREFLIGHT.....................................................................29

Identify Your Model.....................................................29

Charge the Batteries ..................................................29

Balance the Propellers...............................................29

Ground Check............................................................29

Range Check.............................................................29

ENGINE SAFETY PRECAUTIONS.................................30

AMA SAFETY CODE (excerpt)......................................30

IMAA SAFETY CODE (excerpt).....................................30

CHECK LIST ....................................................................32

FLYING.............................................................................32

Fuel Mixture Adjustments..........................................32

Takeoff .......................................................................33

Flight..........................................................................33

Landing......................................................................33

Performance Settings ................................................33

3D Control Throws .....................................................34

3D Servo Arms ..........................................................34

Servos........................................................................34

APPENDIX.......................................................................35

FLIGHT TRIMMING..........................................................38

TAIL WHEEL PUSHROD PATTERN................................39

ENGINE MOUNT TEMPLATE..........................................39

The Great Planes 1/4-Scale Patty Wagstaff Extra 300S

ARF

is a versatile airplane designed for giant-scale

aerobatics.The
Extra 300S ARF is capable of wild, 3D aerobatics while still
keeping the slow speed and landing performance of a low
wing sport model. The Extra 300S ARF is an airplane that
will go where you point it without any surprises.

For the latest technical updates or manual corrections to the
Extra 300S ARF, visit the web site listed below and select
the Extra 300S 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.

http://www.greatplanes.com/airplanes/index.html

The Extra 300S ARF 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 giant-scale models. If
you plan to attend an IMAA event, contact the IMAA for a
copy of the IMAA Safety Code at the address or telephone
number below.

IMAA

205 S. Hilldale Road

Salina, KS 67401

[phone]

Scale Competition

Though the Extra 300S 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 none-the-less and is therefore
eligible to compete in the

Fun Scale

class in AMA
competition (we receive many favorable reports of Great
Planes ARFs 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.

IMAA

INTRODUCTION

TABLE OF CONTENTS

2

If you would like photos of the full-size Patty Wagstaff Extra
300S 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

1.Your Extra 300S 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 Extra 300S ARF, if not assembled and
operated correctly, could possibly cause injury to you or
spectators and damage to property.

2. You 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 extreme 3D flying, the modeler is responsible for
taking steps to reinforce the high stress points.

WARNING: The cowl and wheel pants 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
(wheel pant, cowl) to remove fiberglass dust, as the dust
may 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.

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
you 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:

This is a partial list of items required to finish the Extra 300S
ARF that may require planning or decision making before
starting to build.Stock numbers are provided in

parentheses.

DECISIONS YOU MUST MAKE

BEFORE BEGINNING TO BUILD

Academy of Model Aeronautics

5151 East Memorial Drive

Muncie, IN 47302

Tele: [phone]

Fax [phone]

Or via the Internet at:

http://www.modelaircraft.org

We, as the kit manuf acturer , pro vide you with a top

quality

thoroughly tested kit and instructions, but

ultimately the

quality and flyability 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

The Extra 300S ARF can use a simple 4 to 6-channel radio
with several “Y”reversing and non-reversing harnesses or it
can use a 6 to 10-channel computer radio.Even though the
airplane flies fine with a simple radio, we strongly
recommend that a computer radio be installed as this will
make it easier to obtain the best performance of all flying
styles possible with the Extra 300S ARF. Also, all servos
used on this airplane should be capable of delivering at
least 60 oz-in of torque with the exception of the throttle
servo.Digital servos are highly recommended for 3D flying.

Note: Battery selection is also very important.The batteries
must be in good condition. To verify this, make sure you
cycle them several times bef ore y ou fly the airplane and that
they reach their advertised capacity. If you use 60 oz-in
servos on your airplane, the minimum battery size
recommended is a 4-cell, 1200mAh battery .If you are using
digital servos on your airplane, a 4-cell, 2000mAh battery is
the minimum size recommended. Please make sure your
batteries are fully charged before each flight, and check and
recharge them if needed between flights.A Hobbico®Digital
Voltmeter MKIII (HCAP0356) works well for checking your
battery voltage.A Hobbico Quick Field Charger™(HCAM3000)
will charge your batteries between flights.

The recommended engine size range for the Extra 300S
ARF is 1.60 cu in to 2.10 cu in [25 to 35cc] 2-stroke, 2.00 cu
in to 3.00 cu in [33 to 50cc] 4-stroke or 2.5 cu in to 3.8 cu in
[41 to 65cc] Gas. Spor t style flying will be possible with the
lower engine sizes recommended while 3D style flying will
require the larger sizes recommended. If an engine in the
upper end of the size range is used, throttle management
must be practiced. The larger size engines recommended
are for 3D style flying which means that the engine is
capable of producing several pounds of thrust more than
what the model weighs. Full throttle should only be used
during straight up maneuvers, never during straight and
level flying or while diving as this might over stress the
airplane. The air plane has been tested with engines within
the recommended range, including the upper end, and it
proved to be capable of handling all of them.

The Extra 300S ARF includes the hardware and
instructions necessary to install a glow type engine. If you
decide to install a gas engine you will need to supply your
own fuel tank and hardware necessary to install and run the
engine.You may also need to modify the fuel tank supports.

You must not install a larger engine than recommended
under any circumstances. Installing a larger engine than
recommended will void your warranty and will overstress
your airplane to the point where it may break in the air.The
airplane is designed and built so that it will fly well with
engines within the recommended range.

This is the list of hardware and accessories required to
finish the Extra 300S ARF. Stock numbers are provided in
parentheses.

❏ Engine 1.60 cu in to 2.10 cu in [25 to 35cc] 2-stroke,

2.00 cu in to 3.00 cu in [33 to 50cc] 4-stroke, or 2.7 cu
in to 3.8 cu in [44 to 65cc] Gas

❏ Suitable propellers

(refer to the engine manufacturer’s

recommendations)

❏ Switch and charge jack mounting set (Great Planes-

GPMM1000) or (Ernst-ERNM3001)

❏ R/C foam rubber (1/4"-HCAQ1000, or 1/2" HCAQ1050)

If you plan to use a non-computer radio you will
also need:

❏ 4-Channel radio with seven servos for a glow engine
❏ 5-Channel radio with eight servos for a gas engine
❏ (4) 12" Servo extension (ailerons, throttle, elevator,

rudder) (HCAM2100 Futaba®)

❏ (2) “Y” har ness (rudder, aileron) (HCAM2500)
❏ (1) “Y” harness with servo reverser (elevator)

(FUTM4150)

If you plan to use a computer radio you will also need:

❏ 7-Channel Radio with seven servos for a glow engine
❏ 8-Channel Radio with eight servos for a gas engine.
❏ (3) 12" Servo extension (ailerons, glow throttle)

(HCAM2100)

❏ (4) 24" Ser vo extensions (rudder, elevator) (HCAM2200)
❏ (4) 6" Ser vo extensions (elevator, ailerons) (HCAM2200)

If you plan to use a glow engine you will also need:

❏ 3' Fuel tubing
❏ Great Planes Aluminum Plug (GPMQ4166) or Great

Planes Easy Fueler™Valve for glow (GPMQ4160)

❏ Pitts style muffler for your engine

If you plan to use a gas engine such as the Fuji™BT 50,
you will also need:

❏ 3' Gas fuel tubing (GPMQ4133)
❏ Great Planes Aluminum Plug (GPMQ4166) or Great

Planes Easy Fueler Valve for gas (GPMQ4161)

❏ Great Planes Ignition Switch Harness (GPMG2150)
❏ 36" Plastic pushrod (GPMQ3710)
❏ 2-56 x 30" Pushrod (GPMQ3716)
❏ 2 Threaded rods for plastic inner rod (GPMQ3831)
❏ 2 Plastic clevises (GPMQ3800)
❏ (4) 1/4-20 x 2" Bolts
❏ (4) 1/4-20 Blind nuts (GPMQ3332)
❏ (4) 1/4" Flat washers
❏ Gas tank for gasoline

Hardware & Accessories

ADDITIONAL ITEMS REQUIRED

Engine Recommendations

Radio Equipment

4

In addition to common household tools and hobby tools, this
is the “short list” of the most important items required to
build the Extra 300S ARF.

Great Planes Pro™CA and

Epoxy glue are recommended.

❏ Top Flite

®

MonoKote®sealing iron (TOPR2100)

❏ Top Flite Panel Line Pen (TOPQ2510)
❏ 1/2 oz. Thin Pro CA (GPMR6001)
❏ 1/2 oz. Medium Pro CA+ (GPMR6007)
❏ 30-Minute Epoxy (GPMR6047)
❏ 6-Minute Epoxy (GPMR6042)
❏ Hobby knife (HCAR0105)
❏ #11 Blades (HCAR0211)
❏ Small T-pins (HCAR5100)
❏ Builder’s triangle (HCAR0480)
❏ Electric drill and 1/16" [1.6mm], 5/64" [2.0mm], 3/32"

[2.4mm], 7/64" [2.8 mm], #28 (0.136") [3.4mm], 3/16"
[4.8mm], 1/4" [6.4mm] drill bits.

❏ Small Phillips and flat blade screwdrivers (HCAR1040)
❏ Pliers with a wire cutter (HCAR0630)
❏ 8-32 tap and drill set (GPMR8103) (for glow engine)
❏ Great Planes Pro Threadlocker

™

(GPMR6060)

❏ Heat shrink tubing (GPMM1060)
❏ Curved-tip Canopy Scissors for trimming plastic parts

(HCAR0667)

❏ Masking tape
❏ Hobbico

®

solder iron (HCAR0776)

❏ Denatured alcohol
❏ Paper towels
❏ K & S #801 Kevlar

®

thread string (K+SR4575)

❏ Allen wrenches
❏ Rotary tool such as Dremel

®

Moto-Tool®(for fiberglass

cowl and wheel pants)

❏ Small clamp

Here is a list of optional tools mentioned in the manual that
will help you build the Extra 300S ARF.

❏ Top Flite MonoKote heat gun (TOPR2000)
❏ Top Flite Trim Seal Tool (TOPR2200)
❏ T op Flite Precision Magnetic Prop Balancer

™

(TOPQ5700)

❏ Top Flite Hot Sock

™

iron cover (TOPR2175)

❏ Hobbico Hot Knife

™

(HACR0770)

❏ 3M “75” spray adhesive (MMMR1900)
❏ Straightedge with scale (HCAR0475)
❏ Cutting mat (HCAR0456)
❏ CA Debonder (GPMR6039)
❏ CA Applicator Tips (HCAR3780)
❏ CA accelerator (GPMR6034)
❏ Epoxy Brushes (GPMR8060)
❏ Mixing Sticks (GPMR8055)
❏ Dead Center

™

Engine Mount Hole Locator (GPMR8130)

❏ Great Planes AccuThrow

™

Deflection Gauge (for

measuring

control throws, GPMR2405)

❏ Hobbico Servo Horn Dr ill (HCAR0698)
❏ Robar t Superstand II (ROBP1402)
❏ Single-sided foam tape (wing seating tape, GPMQ4422)

• There are two types of screws used in this kit:

Sheet metal screws are 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.SHCS is just an abbreviation for “socket

head cap screw” and that is a machine screw with a socket
head. 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

30-minute (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.

IMPORTANT: There are many places in this manual
where we tell you to reinforce holes made into wood with
thin CA. It is important to do this proper ly to ensure the
strongest possible grip of the screw into the wood. The
proper procedure is to drill the specified pilot hole first,
then run the screw in, remove it, wick thin CA into the
hole, allow the CA to cure and reinstall the screw.

IMPORTANT BUILDING NOTES

Optional Supplies & Tools

Adhesives & Building Supplies

5

• The Extra 300S ARF is 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, b ut 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.

Red–TOPQ0201

Jet White–TOPQ0204

Sapphire Blue–TOPQ0226

Metallic Gold–TOPQ0404

6

To order replacement parts for the Great Planes Extra 300S ARF, use the order numbers in the Replacement Parts List
that follows. Replacement parts are available only as listed. Not all parts are available separately (an aileron cannot be
purchased separately, but is only available with the wing kit). Replacement parts are not available from Product Support,
but can be purchased from hobby shops or mail order/Internet order firms. Hardware items (screws, nuts, bolts) are also
available from these outlets. If you need assistance locating a dealer to purchase parts, visit www.greatplanes.com and
click on “Where to Buy.” If this kit is missing parts, contact Great Planes Product Support.

Replacement Parts List

Order Number Description How to Purchase

Missing pieces ......................Contact Product Support

Instruction manual.................Contact Product Suppor t

Full-size plans.......................Not available

GPMA2329......................................Wing Tube

GPMA2330......................................Wing Set

GPMA2331......................................Fuselage

GPMA2332......................................Stab Set

GPMA2333......................................Rudder

GPMA2334......................................Landing Gear

GPMA2335......................................Wheel Pants Set

GPMA2336......................................Canopy

GPMA2337......................................Cowl

GPMA2338......................................Decal Set

GPMA2339......................................Stab Tubes (2)

ORDERING REPLACEMENT PARTS

................

Contact Your Hobby
Supplier to Purchase
These Items

0" 1" 2" 3" 4" 5" 6" 7"

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180

Inch Scale

Metric Scale

To convert inches to millimeters, multiply inches by 25.4

7

1. Fuselage & Canopy

2. Stab Center Section

3. Right Stab Half and Elevator

4. Left Stab Half and Elevator

5. Aluminum Stab Mounting Tubes

6. Left Wing and Aileron

7. (4) Ply Wheel Pant Mounts

8. (4) Ply Wing Washers

9. (5) Hardwood Cowl Blocks

10. (8) 4-40 x 12" Metal Pushrods

11. (2) Aileron Servo Covers

12. (2) Hardware Bags (contents listed
below)

13. Hardwood Stick

14. Fuel Tank

15. CA Hinge Material

16. Engine Mount

17. 4" Aluminum Spinner

18. Tail Wheel Assembly

19. (2) Fiberglass Wheel Pants

20. (2) 4" Wheels

21. Landing Gear

22. Right Wing and Aileron

23. Fiberglass Cowl

24. Rudder

25. Aluminum Wing Tube

(8) 4-40 x 12" Threaded One End

Pushrods
(4) 4-40 x 3/4" Bolts
(2) Nylon Tail Wire Straps
(8) 4-40 Threaded Metal Clevises
(7) 4-40 Solder Metal Clevises
(8) 8-32 x 1" Socket Head Cap Screw
(15) Silicone Retainers
(9) 8-32 Blind Nuts
(33) #4 x 5/8" Screws
(13) #8 Flat Washers
(5) 8-32 x 1" Phillips Screw
(2) 1/8" Wheel Collar

(4) 1/4 -20 x 2" Nylon Bolt
(1) 6-32 Torque Rod Horn
(1) Large Quick Connector
(1) Retainer For Quick Connector
(7) #4 Flat Washers
(3) 4-40 x 1/4" Socket Head Cap Screw
(2) 2" x 3/16" Axles
(2) Large Axles Nuts
(2) 3/16" Wheel Collars
(2) 6-32 x 1/8" Socket Head Set Screws
(4) #4 x 3/8" Screws
(4) 1/4-20 Blind Nuts (installed in wing)

(8) #8 Lock Washer
(4) #2 x 3/8" Screw
(4) #2 Washers
(8) 4-40 Hex Nuts
(2) #4 x 3/4" Screw
(4) Nylon Dowels
(6) Giant-Scale Control Horns
(1) #64 Rubber Band
(2) 3mm x 250mm Hardwood Dowel
(1) Landing Gear Cover

Kit Contents (Photographed)

Kit Contents (Not Photographed)

Before starting to build, use the Kit Contents list to 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 Great Planes Product Support. When repor ting 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:

Telephone: [phone]

Fax: [phone]

E-mail: [e-mail]

KIT CONTENTS

22

24

23

1

2

3

4

5

6

7

9

8

11

10

12

14

15

16

17

18

19

20

21

25

13

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

parts of the kit from the box (wings, fuselage, cowl, tail
parts, etc.) and inspect them for damage. If any parts are
damaged or missing, contact Product Support at the
address or telephone number listed in the front cover.

❏ 2. Remove the masking 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 model’s cov ering if necessary. Apply pressure with a Hot
Glove over sheeted areas to thoroughly bond the covering
to the wood.

❏ 1. The first steps in the construction of this wing will be

the installation of the ailerons and the aileron servos. The
process described here will explain how to install the right
aileron and the right aileron servo. The process has to be
repeated again to install the left aileron and the left aileron
servo, or you can work on both at the same time.

❏ ❏ 2.Locate the pre-cut hinge slots on the wing’s trailing

edge and the leading edge of the aileron. Drill a 3/32"
[2.4mm] hole, 1/2" [12mm] deep in the center of each hinge
slot to allow the CA to “wick” in. Follow-up with a #11 blade
to clean out the slots. Hint: If you have one, use a high­speed rotary tool to drill the holes.

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

from the hinge slots in the wing and aileron.

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

CA hinge strip. Snip off the corners so they go in easier.

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

the hinges do not remain centered, stick a pin through the
middle of the hinge to hold it in position.

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

hinges. Adjust the aileron so that 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.

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

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

DRILL A 3/32" HOLE

1/2" DEEP, IN CENTER

OF HINGE SLOT

Hook Up the Ailerons

ASSEMBLE THE WING

Preparations

BUILDING INSTRUCTIONS

8

❏ ❏ 8.Feel through the MonoKote cov ering on the bottom

surface of the wing and find the opening for the aileron
servo. Cut the covering 1/8" [3.2mm] inside the opening.
Use a sealing iron or trim seal tool to seal the covering to
the edges of the opening.

❏ ❏ 9. Connect one 12" [305mm] servo lead extension to

the aileron servo. Use heat shr ink tubing or tape to secure
the connection. Tie the string inside the aileron servo
opening to the aileron servo lead. Pull the ser vo lead out of
the end of the wing with the string.

❏ ❏ 10.Test fit the servo in the opening and trim the

opening
if necessary .Mark the location of the servo mounting screws
and drill 1/16" [1.6mm] holes at the marks. Wick some thin
CA in the holes you just made and install the aileron servo
with the hardware that was supplied with it.

❏ ❏ 11. Install a threaded metal clevis approximately 18

full turns onto one of the 12" [305mm] threaded one end
pushrods. Connect the clevis to a large nylon control horn
and slip a silicone retainer onto it. Align the pushrod 90
degrees to the aileron’s edge as sho wn above and mark the
control horn’s holes on the aileron.Make sure that the

control

horn is positioned on the aileron’s plywood mounting plate.

❏ ❏ 12.Use a 1/16" [1.6mm] drill bit to drill the control

horn’s
screw holes.Wrap masking tape 1/4" [6.4mm] from the end
of the bit as a guide to keep from drilling the holes too deep.
Do not drill through. Wick some thin CA into the holes

and

mount the control horn using four #4 x 5/8" [16mm]

screws.It is

important that you use thin CA to strengthen the holes.

9

❏ ❏ 13.Cut up a servo arm and center it so that the servo

arm is 90 degrees to the pushrod. Center the aileron and
mark on the pushrod where it meets with the servo arm’s
hole.Make another mark 3/4" [19mm] closer to the threaded
metal clevis.Cut the wire at the second mark.

❏ ❏ 14.Solder an unthreaded metal clevis on the pushrod

as shown. Install a 4-40 hex nut on the threaded end of the
pushrod. Slip a silicone retainer onto the clevis and install
the clevis on the servo arm.Install the servo arm on the

servo.

❏ ❏ 15. Find the pre-painted ABS aileron servo cover.

Locate it over the aileron servo and mark the mounting
holes on the wing sheeting. Remove the cover and drill
1/16" [1.6mm] holes through the wing sheeting at the marks.
Wick thin CA into the holes and install the aileron servo
covers in

place with two #2 x 1/4" [6.4mm] screws and two #2
washers. Install the aileron pushrod in place. Secure the
servo arm in place with the servo screw.Adjust the length of
the pushrod and tighten the hex nut against the threaded

clevis.

HOW T O SOLDER

A. Use denatured alcohol or other solvent to remove
residual oil from the pushrod.

B. Use coarse sandpaper to thoroughly roughen the end
of the pushrod where it is to be soldered.

C. Apply a few drops of soldering flux to the end of the
pushrod, then use a soldering iron or a torch to heat the
end of the pushrod. Coat the end of the pushrod with
silver solder (GPMR8070) by touching the solder to the
pushrod. The heat of the pushrod should melt the
solder–not the flame of the torch or soldering iron–thus
allowing the solder to flow.Note: Do not use silver solder
for electrical soldering.

D .Join the clevis to the pushrod.Add another drop of flux,
then heat and add solder.The same as before, the heat
of the parts being soldered should melt the solder thus
allowing it to flow. Allow the joint to cool without
disturbing. Avoid excess blobs, but make certain the joint
is thoroughly soldered. The solder should be shiny, not
rough. If necessary, heat the joint again and allow to cool
slowly without disturbing.

E. After the joint has solidified but while it is still hot,
carefully use a cloth to wipe away soldering flux.
Important: After the joint cools, coat with oil to protect it
from corrosion. When finished, the solder joint should
appear shiny not dull. If it is dull when it cools, it is a cold
joint and not very strong. Simply reheat the cold joint to
correct this problem.

10

❏ ❏ 16. Find the four white nylon anti-rotation pins.

Locate
the holes in the wings for the pins. Mix a small amount of
30-minute epoxy and glue the anti-rotation pins in place.
Once inserted the pins should stick out about 1/2" [13mm].
Clean up any excess epoxy with a paper towel dampened
with denatured alcohol.

❏ 17.If you ha v e not done so, go back to step #1 and finish

the left wing the same way.

❏ 1.Feel through the MonoKote for the wing mounting

holes
in the fuselage.There should be a total of six holes on each
side of the fuselage: two for the wing hold down bolts, two
for the anti-rotation pins, one for the wing tube and one for
the servo leads.Cut awa y the MonoKote and seal the edges
with a sealing iron or a trim seal tool. Remember to do this
on both sides of the fuselage. Note: A little bit of thin CA
applied all the way around each hole will protect the wood
fuel creep.

❏ 2. Even though this step belongs in the

“Install The T ail

Surfaces”

section, it is more convenient to perform it now.

Feel through the MonoKote for the stabilizer slot in the aft
part of the fuselage. Cut away the MonoKote from the slots
on both sides of the fuselage and then seal the edges with
a sealing iron or a trim seal tool.

❏ 3. Find the aluminum wing tube and install it centered

in the fuselage.Test fit the wings to the fuse and bolt them
in position using two 1/4-20 x 2" [51mm] nylon bolts and two
5/16" [8mm] wood washers for each wing. If necessary,
enlarge or adjust the wing bolt holes in the fuselage so the
wing bolts will align with the blind nuts in the wing. Also,
slightly enlarge the anti-rotation pin holes in the fuselage if
necessary. Slightly enlarging the pin holes does not change
the wing incidence. Install the two wings this way. Cut 1"
[25mm] off the end of all four wing bolts, this will make
installing the wing easier. Remove the wings from the
fuselage.

❏ 1. Glue a 1/2" x 1/4" x 8-1/4" [13mm x 6.4mm x 210mm]

hardwood stick to the servo tra y as shown with 6-minute

epoxy.

Install the Servo Tray

ASSEMBLE THE FUSELAGE

Mount the Wing to the Fuselage

11

Once the glue has cured, install the servo tray in place as
shown using 6-minute epoxy. The notched side fits against
the former.

❏ 1.Top and bottom firewall support:Make marks 1/8"

[3.2mm]
away from the edge of the firewall at the center of the
firewall support lip and 3/4" [19mm] to either side.

❏ 2. Firewall side supports: Make marks 5/8" [16mm]

away
from the edge of the firewall side supports’flanges as shown
in the photo above.

❏ 3.Drill 1/8" [3.2mm] holes 1" [25mm] deep at all the

marks.

❏ 4. Mix some 30-minute epoxy. Wick some epoxy inside

the holes drilled in the previous step. Inser t a 1/8" [3.2mm]
dowel inside a hole and slide it in and out several times to
make sure that it is coated in epoxy. Push the dowel all the
way in and cut it so that about 1/8" [3.2mm] of it protrudes.
Repeat this step for all the holes.Clean up any excess glue
with a paper towel dampened with denatured alcohol.
Repeat this procedure for the bottom firewall.

❏ 5.Once the epoxy has cured, sand the dowels flush with

the firewall supports.

❏ 6. Fuelproof the inside of the firewall and the sanded

areas with epoxy mixed with alcohol.Let the epoxy cure.

Engine Mounting Preparations

12