GREAT PLANES F1 Rocket Evo Instruction Manual

INSTRUCTION MANUAL

SPECIFICATIONS

Wingspan:

Length:
Weight:

Wing Area:

Wing Loading:

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

52 in [1320mm]
44 in [1120mm]
6– 7 lb [2720– 3170 g]

2

448 in
31 oz /ft

[28.9 dm2]

2

[95 g/dm2]

Radio: Four channel

(minimum)
with 5 servos

Engine: .46 -.55 cu in [7 – 9cc]

two-stroke,
.70 cu in [11.5cc]
four-stroke

Electric Power: RimFire 55

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 CONCERNING THE ASSEMBLY AND USE OF THIS MODEL.

Entire Contents © 2013 Hobbico,® Inc. All rights reserved.

Champaign, Illinois

[phone], Ext 5

[e-mail]

GPMA1030 Mnl

TABLE OF CONTENTS

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

Academy of Model Aeronautics . . . . . . . . . . . . . . . . . . 2

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

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

Motor Battery Recommendations . . . . . . . . . . . . . . . . 3

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

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

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

Adhesives and Building Supplies. . . . . . . . . . . . . . . . . 3

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

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

KIT INSPECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

ORDERING REPLACEMENT PARTS . . . . . . . . . . . . . . . . 4

KIT CONTENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

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

BUILD THE WING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Install the Aileron Servos & Pushrods . . . . . . . . . . . . . 6

Finish the Wing Panels. . . . . . . . . . . . . . . . . . . . . . . . . 8

BUILD THE FUSELAGE . . . . . . . . . . . . . . . . . . . . . . . . . 10

Assemble the Tail Section . . . . . . . . . . . . . . . . . . . . . 10

Install Landing Gear & Wheel Pants . . . . . . . . . . . . . 11

Install the Servos and Pushrods . . . . . . . . . . . . . . . . 12

INSTALL THE POWER SYSTEM. . . . . . . . . . . . . . . . . . . 14

Glow Engine Installation. . . . . . . . . . . . . . . . . . . . . . . 14

Install the Electric Motor. . . . . . . . . . . . . . . . . . . . . . . 17

Optional Method for Securing the Canopy. . . . . . . . . 19

Install the Cowl. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Complete the Radio Installation . . . . . . . . . . . . . . . . . 21

Finishing Touches . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

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

GET THE MODEL READY TO FLY . . . . . . . . . . . . . . . . . 22

Install & Connect the Motor Battery . . . . . . . . . . . . . . 22

Battery Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . 22

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 and Range Check . . . . . . . . . . . . . . . 26

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

AMA SAFETY CODE. . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Radio Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

CHECKLIST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

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

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

Takeoff . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Flight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Landing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

INTRODUCTION

The F-1 Rocket is another in a line of homebuilt aircraft for

general aviation enthusiasts. We think you will enjoy this
model rendition of the Rocket. Though it is a “scale” model

you will fi nd its performance to be on par with typical aerobatic

airplanes. You will enjoy putting the Rocket through loops, rolls,
etc. For the latest technical updates or manual corrections
to the F-1 Rocket visit the Great Planes web site at www.
greatplanes.com. Open the “Airplanes” link, then select the F-1

Rocket 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.

Academy of Model Aeronautics

If you are not already a member of the AMA, please join! The
AMA is the governing body of model aviation and membership

provides liability insurance coverage, protects modelers’ rights
and interests and is required to fl y at most R/C sites.

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!!! Two 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.

SAFETY PRECAUTIONS

PROTECT YOUR MODEL, YOURSELF & OTHERS...

FOLLOW THESE IMPORTANT SAFETY PRECAUTIONS

1. Your F-1 Rocket 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 F-1 Rocket, 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 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.

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

4. You must use an R /C radio system that is in good con dition,
a correctly sized engine, and other components as specifi ed
in this instruction manual. All components must be correctly
installed so that the model operates correctly on the ground

2

and in the air. You must check the operation of the model
and all components before every fl i g h t .

5. 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.

6. 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.

7. 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

(wheel pant, cowl) 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.

Electronic Speed Control

A brushless ESC (electronic speed control) is required for

the recommended motor set-up. We recommend using the
ElectriFly Silver Series SS-60 Brushless ESC 60A Hi Voltage
or Flight Power 60A LiPo Brushless ESC

❍ GPMM1850 ElectriFly SS-60 Brushless ESC

60A Hi Voltage

❍ FPWM0234 Flight Power 60A LiPo Brushless ESC

Optional Voltage Regulator (CSEM0005) eliminates the need
for a receiver battery.

Recommended Charger

A LiPo compatible charger is required to charge the LiPo

battery. The Great Planes ElectriFly Triton2 EQ AC/DC Charger
is designed for LiPo packs, but is also capable of charging
NiCd, NiMH, Pb acid and LiFe batteries.

❍ GPMM3156 Great Planes ElectriFly Triton2

EQ AC/DC Charger.

Radio Equipment

We, as the kit manufacturer, provide 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.

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

DECISIONS YOU MUST MAKE

This is a partial list of items required to fi nish the F-1 Rocket

that may require planning or decision making before starting
to build. Order numbers are provided in parentheses.

Motor / Battery Recommendations

The Evo Rocket comes with a motor box for the ElectriFly

RimFire .55 and the O.S. Brushless Motor.

❍ GPMG4715 RimFire .55 42-60-480 Brushless Motor

❍ OSMG9550 O.S. Brushless Motor

❍ GPMQ4610 O.S. 6mm Propeller Adapter

The Evo Rocket was fl own with two ElectriFly 3S, 11.1, 3200

mAh 25C Lithium-Polymer Batteries.

Using these two batteries in series will require the use of the
(GPMM 3143) ElectriFly Series 2 Deans® male, Ultra /1 Deans
Female Ultra Adapter

IMPORTANT: Before experimenting with different battery
combinations and connecting multiple battery packs with
adapter plugs, refer to the Battery Precautions on page 22.

The Evo F-1 Rocket requires a minimum of four channels. The

airplane requires the use of fi ve servos for the glow engine
installation, or four servos for the electric motor installation.

A servo with a minimum 54oz-in of torque is required on all

of the control surfaces. A lower torque servo is acceptable
on the throttle servo. We used the Futaba 9001 (FUTM 0 075 )
throughout our testing. Additionally, two 6" [150mm] servo
extensions (HCAM2701 for Futaba) are required for the
aileron servos and one 6" Y-harness (FUTM4135 for Futaba).

Engine Recommendations

The recommended engine size range for the F-1 Rocket

is .46 -.55 cu in [7 – 9cc] two-stroke, or .70 cu in [11.5cc]
four-stroke. If an engine in the upper end of the size range
is used, remember that this is a scale model that is intended
to fl y at scale-like s peeds, so throttle manag ement shoul d be
practiced. A Pitts style muffl er specifi c to your engine choice
is recommended.

ADDITIONAL ITEMS REQUIRED

Adhesives and Building Supplies

This is the list of Adhesives and Building Supplies that are

required to fi nish the F-1 Rocket

❍ 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], 7/64" [2.8mm]

❍ 6-32 tap and drill set (GPMR8102)

❍ Thread locker thread locking cement (GPMR6060)

3

Optional Supplies and Tools

Here is a list of optional tools mentioned in the manual that

will help you build the F-1 Rocket.

❍ R/C foam rubber 1/4" [6mm] - (HCAQ1000)

❍ Mixing sticks 50, (GPMR8055)

❍ Mixing cups (GPMR8056)

❍ 21st Century sealing iron (COVR2700)

❍ 21st Century iron cover (COVR2702)

❍ 2 oz. [57g] spray CA activator (GPMR6035)

❍ CA applicator tips (HCAR3780)

❍ Hobbico Soldering Iron 60 Watt (HCAR0776)

❍ #1 Hobby knife (HCAR0105)

❍ #11 blades (5-pack, HCAR0211)

❍ Denatured alcohol (for epoxy clean up)

IMPORTANT BUILDING NOTES

● There are three types of screws used in this kit:

Sheet Metal Screws are designated by a number and a
length. For example #6  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  3/4" [19mm].

This is a number four screw

that is 3/4" [19mm] long with

forty threads per inch.

Socket Head Cap Screws (SHCS) are designated by a
number, threads per inch, and a length. For example
4-40  3/4" [19mm].

This is a 4-40 SHCS that

is 3/4" [19mm] long with

forty threads per inch.

● 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 F-1 Rocket is factory-covered with Top Flite MonoKote

fi lm. 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 Metallic Plum TOPQ0403
Cub Yellow TOPQ0220 Metallic Blue TOPQ0402

● 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.

KIT INSPECTION

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 Ph: [phone], ext. 5
Champaign, IL 61822 Fax: [phone]

E-mail: [e-mail]

● 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 de cide what type of g lue 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 -min ute e poxy. Wh en
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 F-1 Rocket 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.

To locate a hobby dealer, visit the Great Planes web site at

www.greatplanes.com. Select “Where to Buy” in the menu
across the top of the page and follow the instructions provided
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.

4

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 Hobby Services
and payments by 3002 N Apollo Drive, Suite 1
personal check to: 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
Product Support by e-mail at productsupport@greatplanes.
com, or by telephone at [phone].

KIT CONTENTS

REPLACEMENT PARTS LIST

Order No. Description

GPMA4320
GPMA4321
GPMA4322
GPMA4323
GPMA4324
GPMA4325
GPMA4326
GPMA4327
GPMA4328
GPMA4329

Fuselage
Wing
Tail Surfaces
Cowl
Hatch
Landing Gear
Wheel Pants
Spinner
EP Motor Mount
Decals

1

7

8

6

5

9

10

2

3

4

13

12

17

11

14

15

16

Kit Contents

1. Cowl

2. Fuselage

3. Fin and Rudder

4. Stabilizers and Elevators

5. Canopy Hatch

6. Fuel Tank

7. Motor Mount

8. Spinner

9. Left Wing

10. Right Wing

11. Wing Fairing

12. Wing Spar

5

13. Landing Gear

14. Tail Wheel Assembly

15. Wheel Pants

16. Wheels

17. Electric Motor Box

PREPARATIONS

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 Support at the
address or telephone number listed in the “Kit Inspection”
on the previous page.

2. 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.

BUILD THE WING

Begin the wing assembly with the right wing panel so your
assembly matches the photographs in the manual.

Install the Aileron Servos & Pushrods

1. Cut three arms from a four-armed servo arm for each

❏ ❏

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

your radio system and install the servo arms to the servo

perpendi c ular to the servo case as show n. Be sure to rei nstal l
the servo arm screws into the servos.

3/ 8 " [2 x 10mm] washer head wood screw into each hole a nd
back it out. Apply a drop of thin CA glue into each hole to
harden the wood. When the CA glue has dried, thread a 5/64"
x 3/8" [2 x 10mm] washer head screw into each of the holes.

4. Attach a 6" [152mm] servo extension to each aileron

❏ ❏

servo and secure the connector using tape or heat shrink
tubing (not included).

2. Place your servo onto the servo tray, using it as

❏ ❏

a guide for the installation of the aileron servo mounting
blocks. Use epoxy to glue the 3/4" x 3/4" x 5/16" [19x19x8mm]
hardwood servo mounting blocks to the inside of the hatch
cover. Set the cover aside to allow the glue to harden.

3. With the epoxy completely cured from step 2, drill

❏ ❏

1/16" [1.6mm] holes in the hatch covers through the mounting

blocks approximately 3/8" [9.5mm] deep. Thread a 5/64" x

5. Position the servos against the underside of the

❏ ❏

aileron servo hatch covers between the mounting blocks.
Drill 1/16" [1.6mm] holes through the mounting tabs on the
servo cases into the blocks. Thread a servo mounting screw
(i ncluded with the ser vo) into each hole a nd bac k it out. Apply
a drop of thin CA to each hole to harden the wood. When the
CA has dried, install the servos onto the hatch covers using
the hardware supplied with the servos.

6

x 3/8" [2 x 10mm] washer head wood screw into each hole
you drilled and back it out. Apply a drop of thin CA glue into
each hole to harden the wood. When the CA glue has dried,
thread a 5/64" x 3/8" [2 x 10mm] washer head screw into
each of the four holes. When positioning the hatch be sure
the servo arm is towards the wing tip.

8. Mark the location for the control horn onto the aileron

❏ ❏

with a fi ne tip, felt tip marker. The mark can be removed later
with a paper towel and alcohol.

6. Use the strings taped inside the aileron servo hatches

❏ ❏

to pull the servo leads through the wing ribs. After pulling the
servo leads through the wing, insert the connector through
the hole in the top of the wing.

7. Position the aileron servo hatch covers in place. Drill

❏ ❏

1/16" [1.6mm] holes through each of the four holes in the

servo covers and into the hardwood blocks. Thread a 5/64"

Hinge Line Hinge Line

Correct Incorrect

9. Position the control horn centered on the mark you

❏ ❏

made, positioning it as shown. Drill a 1/16" [1.6mm] hole

7

through the mounting holes in the control horn, drilling through
the aileron. Insert a 5/64" x 5/8" [2x16mm] machine screw
through the control horn and the aileron. Secure the horn by
threading the screws into the nylon back plate, tightening it
to the aileron.

10. Thread a nylon clevis 20 complete turns onto each

❏ ❏

6" [152mm] pushrod. Slide a silicone clevis retainer onto
the clevis and connect the clevises to the outer holes of the
control horn. Center the servo and aileron and then mark the
pushrod where it aligns with the hole in the servo arm. Make
a 90 degree bend on the mark. Cut the excess wire, leaving
3/8" [9.5mm] of wire. Insert the wire through the outer hole
in the servo arm securing it with a nylon Faslink.

2. Examine the plywood and aluminum wing spar. The

❏

photo indicates the top of the spar. Pay close attention while
gl uing it in p lace in the n ext step to be sure yo u glue it pro perly
into the wing panels.

11. Repeat steps 1-10 for the left wing.

❏

Finish the Wing Panels

1. Use epoxy to glue the 1/8" x 3/4" [3 x 19mm] anti-

❏

rotation pin into the hole at the trailing edge of the root rib
of the right wing panel. Half of the pin should be inserted
into the wing. Use a paper towel dampened with denatured
alcohol to wipe away any excess epoxy.

3. Apply 30 minute epoxy to the wing spar, the spar opening

❏

in both wings and the root rib of both wings. Insert the spar
into the right wing and then slide the left wing onto the spar.
Push the wings together slowly, removing any excess epoxy as
you go. Once the wings are together clean any excess epoxy
with a paper towel and alcohol. Clamp the front of the wing
together, tape the wing and insert two wing bolts in the holes
in the trailing edge of the wing. Wrap a rubber band around
the bolts to hold everything together while the glue hardens.

4. After the glue has hardened secure the wing to the

❏

fuselage using two 1/4-20 x 2" [51mm] nylon wing bolts.

8

HOW TO CUT COVERING FROM BALSA

Use a soldering iron to cut the covering from the stab. The
tip of the soldering iron doesn’t have to be sharp, but a fi ne
tip does work best. Allow the iron to heat fully.

Use a straightedge to guide the soldering iron at a rate that
will just melt the covering and not burn into the wood. The
hotter the soldering iron, the faster it must travel to melt a
fi ne cut. Peel off the covering.

5. Locate the plastic wing fairing, place it on the bottom

❏

of the wing and trace the position onto the wing with a fi ne
tip felt tip marker.

6. Use a sharp hobby knife (or use the technique, “HOW

❏

TO CUT COVERING FROM BALSA”, shown to the right) to

cut the covering away from the wing in the area you outlined.
Be careful not to cut into the wing skin.

7. Lightly sand the inside of the fairing where it will contact

❏

the wing surface. Wipe it clean with a paper towel and alcohol.
Glue the fairing to the wing, tape it in place and allow the
glue to harden.

Leave the wing in place on the fuselage for the next few steps.

9