Great Planes GPMA1271 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. 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 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.

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
WARNINGS AND INSTRUCTIONS CONCERNING THE
ASSEMBLY AND USE OF THIS MODEL.

GPMZ0199 for GPMA1271 V1.0Entire Contents © Copyright 2005

Champaign, IL

[phone], Ext. 5

[e-mail]

INSTRUCTION MANUAL

Wingspan: 82 in [2085mm]
Wing Area: 1772 sq in [114.3 dm2]
Weight: 12.5 – 13.5 lb [5600 – 6070g]
Wing Loading: 16.1 – 17.4 oz/sq ft [49 – 53 g/dm2]
Length: 84 in [2135mm]
Engine: 1.20 – 1.60 cu in [19.5 – 26.0cc] glow,

2.0 – 2.5 cu in [32.5 – 41.0cc] gas

™

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

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

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

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

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

ADDITIONAL ITEMS REQUIRED .....................................3

Hardware & Accessories .............................................3

Covering Tools .............................................................4

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

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

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

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

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

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

PREPARATIONS................................................................6

Assemble the Pushrods...............................................6

ASSEMBLE THE WING .....................................................7

Mount the Ailerons & Flaps .........................................7

Hook Up the Flaps & Ailerons .....................................9

ASSEMBLE THE FUSELAGE.........................................10

Mount the Wing..........................................................10

Mount the Stab & Fin.................................................10

Mount the Landing Gear............................................11

Mount the Engine.......................................................13

Mount the Cowl..........................................................13

Install the Fuel Tank...................................................15

FINAL ASSEMBLY ..........................................................16

Mount the Tail Servos ................................................16

Install the Throttle Servo, Receiver & Battery............17

Mount the Canopy .....................................................18

Apply the Decals........................................................18

GET THE MODEL READY TO FLY..................................19

Check the Control Directions.....................................19

Set the Control Throws..............................................19

Balance the Model (C.G.) ..........................................19

Balance the Model Laterally ......................................20

PREFLIGHT .....................................................................20

Identify Your Model.....................................................20

Charge the Batteries..................................................20

Balance the Propellers...............................................20

Ground Check............................................................21

Range Check .............................................................21

ENGINE SAFETY PRECAUTIONS .................................21

AMA SAFETY CODE (excerpts) ....................................21

CHECK LIST....................................................................22

FLYING.............................................................................22

Important Reminders .................................................22

Fuel Mixture Adjustments ..........................................22

Take Off......................................................................23

Flight ..........................................................................23

Landing ......................................................................23

Whether you’re just learning to do basic aerobatics or are
looking for a quick practice plane as a backup to your
$10,000 Unlimited aerobatic machine, the Giant U-CAN-DO
3D

™

ARF is just the bird you’re looking for.

Large control surfaces, light wing loading and an all around
performance design work together to put a fun-to-fly, do-it-all
3D aerobatic machine in your hands. On low rates, the Giant
U-CAN-DO 3D ARF is a perfect choice for learning to do basic
aerobatics or for great Sunday fun flying. With an O.S.

®

1.60
and high 3D rates, the Giant U-CAN-DO 3D ARF provides
exceptional slow speed and below-stall-speed (3D) aerobatic
ability with vertical performance that is exhilarating.

For the latest technical updates or manual corrections to the
Giant U-CAN-DO 3D ARF, visit the web site listed below and
select the Giant U-CAN-DO 3D 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

1. Your Giant U-CAN-DO 3D 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 Giant U-CAN-DO 3D ARF, if
not assembled and operated correctly, could possibly cause
injury to yourself 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

PROTECT YOUR MODEL,YOURSELF

& OTHERS...FOLLOW THESE

IMPORTANT SAFETY PRECAUTIONS

INTRODUCTIONTABLE OF CONTENTS

2

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. 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 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 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 that follows.

This is a partial list of items required to finish the Giant
U-CAN-DO 3D ARF that may require planning or decision­making before starting to build. Order numbers are provided
in parentheses.

4+ channel radio with 8 standard-sized servos. Note that a
9+ channel, fully computerized radio system is highly
recommended for maximum flexibility and performance.

Ailerons:

❏ (2) 50+ oz/in Ball bearing servos Futaba

S9001 (FUTM0075)

❏ (2) 20" extensions (FUTM4147)
❏ (2) 8" extensions (FUTM4140)

Flaps:

❏ (2) 50+ oz/in oz ball bearing servos Futaba

S9001 (FUTM0075)

❏ (2) 8" extensions (FUTM4140)

Rudder:

❏ (1) 90+ oz/in High torque servos Futaba

S9206 (FUTM0115)

❏ (1) 40" servo extension (FUTM4148)

Elevator:

❏ (2) 90+ oz/in Ball bearing servos Futaba

S9206 (FUTM0115)

❏ If using a computerized radio, two 40" servo

extensions (FUTM4148)

❏ If not using a computerized radio with Ailevator

programming, then a servo reversing harness (FUTM4150)
and a 20" extension (FUTM4147) are required.

Throttle:

❏ (1) Standard servo: Futaba S3003 (FUTM0031)

❏ 1.20 to 1.60 cu in [19.5-26.0cc] glow, 2.0 to 2.5 cu in

[32.5-41cc] gas

❏ Appropriate props, fuel, glow plugs, etc. for your engine

Engine Notes: The Giant U-CAN-DO 3D ARF will hover on
all of the recommended engines. The engines on the lower
end of the range will hover nicely without over-speeding the
airframe in level flight.The engines on the higher end of the
range will hover and give the added power to recover from
unwanted attitudes, but throttle management needs to be
used to keep the speed down. Whatever engine you

choose, an 8 pitch prop or less is recommended.

In addition to the items listed in the

“Decisions You Must

Make”

section, following is the list of hardware and

Hardware & Accessories

ADDITIONAL ITEMS REQUIRED

Engine Recommendations

Radio Equipment

DECISIONS YOU MUST MAKE

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

Note: We, as the kit manufacturer, provide you with a top
quality kit and great 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.

3

accessories required to finish the Giant U-CAN-DO 3D ARF.
Order numbers are provided in parentheses.

❏ Hook & Loop Velcro (GPMQ4480)
❏ 3' Medium fuel tubing (GPMQ4131)
❏ 1/2" R/C Foam (HCAQ1050)

❏ 21st Century

®

sealing iron (COVR2700)

❏ 21st Century trim seal iron (COVR2750)
❏ 21st Century iron cover (COVR2702)

In addition to common household tools and hobby tools, this
is the “short list” of the most important items required to
build the Giant U-CAN-DO 3D ARF.

Great Planes Pro™CA

and Epoxy glue are recommended.

❏ 1/2 oz. Thin Pro CA (GPMR6001)
❏ 1/2 oz. Medium Pro CA+ (GPMR6007)
❏ 6-Minute Epoxy (GPMR6045)
❏ 30-Minute Epoxy (GPMR6047)
❏ Small T-pins (HCAR5100)
❏ Electric drill
❏ Drill bit set including: 1/16" [1.6mm], 5/64" [2mm], 3/32"

[2.4mm], and 1/8" [3mm]

❏ Small Phillips and flat blade screwdrivers (HCAR1040)
❏ Pliers with wire cutter (HCAR0630)
❏ Standard hex wrench set (HCAR0520)
❏ Threadlocker

™

(GPMR6060)

❏ Rotary tool such as Dremel

®

❏ Rotary tool reinforced cut-off wheel (GPMR8200)

Here is a list of optional tools mentioned in the manual that
will help you build the Giant U-CAN-DO 3D ARF.

❏ Great Planes CG Machine

™

(GPMR2400)

❏ Top Flite

®

Precision Magnetic Prop Balancer™(TOPQ5700)

❏ Cutting mat (HCAR0456)
❏ CA Applicator Tips (GPMR6033)
❏ CA Debonder (GPMR6039)
❏ CA Accelerator (GPMR6034)
❏ Epoxy Brushes (GPMR8060)
❏ Mixing Sticks (GPMR8055)
❏ Denatured Alcohol (for epoxy clean up)
❏ Hobby knife (HCAR0105), #11 blades (HCAR0211)
❏ Builders Triangle Set (HCAR0480) (for fin alignment)
❏ Felt-Tip marker (TOPQ2510)
❏ Small metal file
❏ Dead Center

™

Engine Mount Hole Locator (GPMR8130)

❏ Great Planes AccuThrow

™

Deflection Gauge (for

measuring control throws, GPMR2405)

❏ Great Planes Aluminum Fuel Line Plug (GPMQ4166)

Sheet metal screws are designated by a number and a length.
For example, #6 x 3/4" [19mm].

This is a number six screw that is 3/4" [19mm] long.

Machine screws are designated by a number, threads per
inch, and a length – for example, 4-40 x 3/4" [19mm].

This is a number four screw that is 3/4" [19mm] 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 necessary 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 or 6-minute epoxy.

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 Giant U-CAN-DO 3D 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.

Jet White – TOPQ0204

Medium Purple – TOPQ0225

Sky Blue – TOPQ0206

Pink – TOPQ0215

IMPORTANT BUILDING NOTES

Optional Supplies & Tools

Adhesives & Building Supplies

Covering Tools

4

5

KIT INSPECTION

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 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]

Parts Layout

Kit Contents

1. Fuselage

2. Canopy

3. Cowl

4. Fuel Tank

5. Spinner

6. Engine Mount

7. Main Landing Gear (2)

8. Wheels (2)

9. Wheel Pants (2)

10. Wing Tube

11.

Horizontal Stabilizer & Elevator

12. Tail Gear Assembly

13. Vertical Fin & Rudder

14. Wing Panels (L&R)

15. Ailerons (L&R)

16. Flaps (L&R)

(1) Prop Nut Bag (prop nut, spinner, SHCS

and hex wrench)
(8) Heavy Duty Control Horns
(2) Nylon Wing Bolt
(4) Nylon Anti-Rotation Dowels
(1) Tail Wheel Assembly (1-1/4" wheel, 6"

springs, leaf spring, Tail wheel wire, 4 set

screws, steering arm and 3 wheel collars)
(1) Fuel Tank and Hardware
(1) 1/4" x 5/8" [6 x 16mm] Canopy Dowel
(1) Rx and Battery Tray
(1) 3/16" x 3/4" x 4-3/8" [4.8 x 19 x 112mm]

Tank Retainer Stick
(2) Velcro

®

Strips (both A and B sides)
(2) Tail Gear Springs (use to steer the tail wheel)
(2) Large Black Control Horn Backplate

(for elevators)
(2) Decal Sheet
(8) 4-40 Threaded Steel Clevis (for aileron,

flap, rudder and elevator controls)
(8) 4-40 Solder-On Clevis (for aileron, flap,

rudder and elevator controls)

(2) 3-16 x 2" [50mm] Axles
(1) Brass Screw-Lock Pushrod Connector

Body (for throttle)
(6) 4-40 Blind Nut (for canopy mounting)
(10) 8-32 Blind Nuts (for stab, main gear and

engine mount)
(2) 5/16-24 Nuts (for axles)
(2) 1/4-20 Blind Nuts
(8) 4-40 Lock Nuts (for clevises)
(4) 4-40 Lock Nuts (for rudder control horns)
(1) 2-56 Nylon Clevis
(1) Nylon Retainer (for throttle)
(2) CA Hinge Strip
(1) 36" [915mm] Gray Pushrod Tube

(installed in the fuse for the antenna)
(1) 12" [305mm] Gray Pushrod Tube

(for throttle)
(17) Silicone Clevis Retainers
(16) 4 x 1/2" [13mm] Screws (for aileron and

flap control horns)
(4) 6-32 Set Screws
(2) #4 x 5/8" [16mm] Screws (for tail gear)

(1) 4-40 x 1/4" [6mm] SHCS (for throttle)
(6) #2 x 1/2" [13mm] screws (for cowl)
(4) 8-32 x 3/4" [19mm] SHCS (for main gear)
(4) 4-40 x 1" [25mm] SHCS (for rudder

control horns)

(10) 4-40 x 3/4" [19mm] SHCS (for elevators

and canopy mounting)
(4) 4-40 x 1/2" [13mm] SHCS (for wheel pants)
(2) 8-32 x 1-1/4" [32mm] SHCS (for stab)
(8) 8-32 x 1" [25mm] SHCS (for engine mount

to the firewall and engine to mount)
(4) 3/16" [4.8mm] Wheel Collars
(1) 2-56 x 17" [430mm] Pushrod
(7) 4-40 x 12" [305mm] Pushrod
(6) #2 Flat Washers (for cowl)
(12) #8 Lock Washers (for engine, engine

mount, landing gear and stab)
(14) #8 Flat Washers (for engine, engine

mount, landing gear and stab)
(6) #4 Flat Washers (for canopy and

wheel pants)

Kit Contents (Not Photographed)

1

6

10

11

8

2

15

15

13

12

3

4

5

7

9

14

16

Replacement parts for the Giant U-CAN-DO 3D ARF are
available using the order numbers 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 Great Planes web site at

www.greatplanes.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.towerhobbies.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

Order Number Description How to Purchase

GPMA2379 ............Fuselage Kit ..........................Hobby Supplier

GPMA2378 ............Wing Kit ................................Hobby Supplier

GPMA2380 ............Tail Set ..................................Hobby Supplier

GPMA2382 ............Landing Gear ........................Hobby Supplier

GPMA2381 ............Fiberglass Cowl ....................Hobby Supplier

GPMA2387 ............Canopy/Hatch........................Hobby Supplier

GPMA2383 ............Wheel Pants ..........................Hobby Supplier

GPMA2388 ............Decal Sheet ..........................Hobby Supplier

GPMA2385 ............Tailwheel Assembly ..............Hobby Supplier

GPMA2384 ............Aluminum Spinner ................Hobby Supplier

GPMA2386 ............Aluminum Wing Tube ............Hobby Supplier

GPMA2389 ............Nylon Wing Bolts ..................Hobby Supplier

GPMZ0199 ............Instruction Manual ..............Product Support

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

Full-size plans ..........................Not Available

1" = 25.4mm (conversion factor)

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

parts of the kit from the box (wings, fuse, wheel pants, cowl,
tail parts, etc.) and inspect them for damage. If any parts
are damaged or missing, contact Product Support at the
telephone number on page 5.

❏ 2. Carefully remove the masking tape and separate the

ailerons from the wing, the rudder from the fin and the
elevators from the stab. Where necessary, use a covering iron
with a covering sock to tighten the covering that may have
loosened during storage or from removing the masking tape.
Apply pressure over sheeted areas and the servo openings to
thoroughly bond the covering to the wood.

❏ 1. Cut the seven 4-40 x 12" [305mm] pushrods as

listed below.

❏ A. (4) 5" [127mm].
❏ B. (2) 5-1/2" [140mm].
❏ C. (1) 6-3/4" [172mm].

Assemble the Pushrods

PREPARATIONS

METRIC CONVERSIONSORDERING REPLACEMENT PARTS

6

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

1/8" = 3.2 mm
5/32" = 4.0 mm
3/16" = 4.8 mm

1/4" = 6.4 mm

3/8" = 9.5 mm

1/2" = 12.7 mm

5/8" = 15.9 mm

3/4" = 19.0 mm

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

6" = 152.4 mm
12" = 304.8 mm
18" = 457.2 mm
21" = 533.4 mm
24" = 609.6 mm
30" = 762.0 mm
36" = 914.4 mm

❏ 2. Use denatured alcohol or other solvent to thoroughly

clean one of the pushrods. Use coarse sandpaper to
roughen the end of the pushrod where it is to be soldered.

❏ 3. Apply a few drops of soldering flux to the end of the

pushrod. Position the clevis so that 1/8" [3mm] of the
pushrod protrudes into the open area of the clevis.

❏ 4. Simultaneously heat the clevis and pushrod. Apply silver

solder (GPMR8070) to the joint. The heat of the parts being
soldered should melt the solder, thus allowing it to flow.

❏ 5. Immediately after the solder has solidified, but while it

is still hot, carefully use a cloth to quickly wipe off the flux
before it hardens. IMPORTANT: After the joint cools, coat
with oil to prevent rust. Note: Do not use the acid flux that
comes with silver solder for electrical soldering.

❏ 6.This is what a properly soldered clevis looks like; shiny

solder with good flow, no blobs, flux removed.

❏ 7. Fit a silicone clevis retainer, 4-40 nut, another silicone

clevis retainer and the clevis on the other end of the pushrod.

❏ 8. Make the remaining six pushrods the same way. Note:

The amount that the clevis screws onto the pushrod will be
adjusted when they are installed.

Do the right wing first.

❏ ❏ 1. Trim the covering from both servo openings on the

bottom of the wing.

Mount the Ailerons & Flaps

ASSEMBLE THE WING

7

❏ ❏ 2. Use epoxy to glue in the two nylon wing dowels.

❏ ❏ 3. Cut eight 3/4" x 1" [19 x 25mm] hinges from the 2"

x 9" [50 x 230mm] CA hinge strip. Snip the corners off so
they go in easier.

❏ ❏ 4. Test fit the hinges in the hinge slots of the aileron,

flap and the wing. If you have difficulty inserting the hinges,
insert a #11 blade into the slot and carefully move it back
and forth to slightly widen the slot.

❏ ❏ 5. Test fit the aileron and flap to the wing with the

hinges. Use a fine-point ballpoint pen to mark the aileron,
flap and wing at the middle of each hinge. Note: Align the
outer tip of the aileron with the outer tip of the wing. Leave
a 1/8" [3mm] gap between the flap and the aileron.

❏ ❏ 6. Separate the aileron and flap from the wing and

take out all the hinges.

❏ ❏ 7. Drill a 3/32" [2.4mm] hole, 1/2" [13mm] deep at the

marks you made in the center of each hinge slot. This space
will allow the CA to “wick” in. Follow with a #11 blade to
clean out the slots. Hint: If available, use a high-speed
rotary tool to drill the holes.

❏ ❏ 8. Cut a small strip of covering from both sides of

each hinge slot. If this is not done the covering may interfere
with the penetration of the CA into the slot and may also
interfere with the free movement of the aileron.

❏ ❏ 9. Stick a pin through the center of each hinge. Fit the

aileron and flap to the wing with the hinges. The pin will keep
the hinge centered. Remove the pins from the hinges. Adjust
the aileron and flaps so there is a small gap–just enough to
see light through or to slip a piece of paper through.

8