GREAT PLANES FACTOR 3D Instruction Manual

INSTRUCTION MANUAL

SPECIFICATIONS

Wingspan:

Length:
Weight:

Wing Area:

Wing Loading:

38 in [965mm]

41.5 in [ 1055 m m ]
28– 32 oz [795– 905 g]

2

375 in

10.8– 12.3 oz/ft

[24.2 dm2]

2

[33–38 g/dm2]

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

Radio: Four channel (minimum)

Five channel computer radio
with mixing capabilities
(for separate ailerons)

Motor: RimFire .10 (35-30-1250)

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]

GPMA1552 Mnl

TABLE OF CONTENTS

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

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

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

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

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

Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Receiver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Servos . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

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

ESC (Electronic Speed Control) . . . . . . . . . . . . . . . . . 3

Propeller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Flight Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

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

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

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

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

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

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

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

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

ASSEMBLE THE WINGS. . . . . . . . . . . . . . . . . . . . . . . . . . 6

Install the Ailerons . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

ASSEMBLE THE FUSELAGE . . . . . . . . . . . . . . . . . . . . . . 7

Install the Main Landing Gear . . . . . . . . . . . . . . . . . . . 7

Install the Elevator & Rudder Servos . . . . . . . . . . . . . . 7

Install the Stab and Elevator . . . . . . . . . . . . . . . . . . . . 8

Install the Motor, Speed Control and Receiver. . . . . . 11

Install the Cowl. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Install the Wheel and Wheel Pants. . . . . . . . . . . . . . . 13

Apply the Decals . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

GET THE MODEL READY TO FLY . . . . . . . . . . . . . . . . . 14

Check the Control Directions . . . . . . . . . . . . . . . . . . . 14

Set the Control Throws. . . . . . . . . . . . . . . . . . . . . . . . 14

Finish the Model. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Balance the Model (C.G.). . . . . . . . . . . . . . . . . . . . . . 15

Balance the Model Laterally. . . . . . . . . . . . . . . . . . . . 16

PREFLIGHT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Identify Your Model. . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Charge the Batteries . . . . . . . . . . . . . . . . . . . . . . . . . 16

Range Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

MOTOR SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . 16

AMA SAFETY CODE EXCERPTS . . . . . . . . . . . . . . . . . 16

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Radio Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

CHECK LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

FLYING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Takeoff . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Flight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Landing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

INTRODUCTION

The Factor 3D EP ARF was designed from the ground up to

provide one of the best fl ying 3D airplanes available today.

Whether you are just learning to fl y 3D or are already an

expert, you will love this airplane.

For the latest technical updates or manual corrections to the
Factor 3D EP ARF visit the Great Planes web site at www.

greatplanes.com. Open the “Airplanes” link, and then select
the Factor 3D EP 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

We urge you to join the AMA (Academy of Model Aeronautics)

and a local R/C club. The AMA is the governing body of model
aviation and membership is required to fl y at AMA clubs.

Though joining the AMA provides many benefi ts, one of the

primary reasons to join is liability protection. Coverage is not
limited to fl ying at contests or on the club fi eld. It even applies
to fl ying at public demonstrations and air shows. Failure to
comply with the Safety Code (excerpts printed in the back of
the manual) may endanger insurance coverage. Additionally,
training programs and instructors are available at AMA club

sites to help you get started the right way. There are over 2,500
AMA chartered clubs across the country. Contact the AMA at
the address or toll-free phone number below:

Academy of Model Aeronautics

5151 East Memorial Drive
Muncie, IN 47302-9252

Tele. [phone]

Fax [phone]

Or via the Internet at: http://www.modelaircraft.org

IMPORTANT!!! 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 Factor 3D EP 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 Factor 3D, if not assembled and operated

2

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.

Transmitter

❍ 4-channel radio (minimum)

Receiver

❍ 617FS FASST 2.4 GHz receiver [FUTL7627]

4. You must use an R/C radio system that is in fi rst-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

fl ight to insure that all equipment is operating and that the

model has remained structurally sound. Be sure to check
clevises or other connectors often and replace them if they
show any signs of wear or fatigue.

7. If you are not an experienced pilot or have not fl own this type
of model before, we recommend that you get the assistance
of an experienced pilot in your R/C club for your fi rst fl ights.

If you’re not a member of a club, your local hobby shop has

information about clubs in your area whose membership
includes experienced pilots.

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.

Servos

❍ (4) Futaba® S3156 Servos [FUTM0656] [ 28 oz-in (2.0

kg-cm) @ 4.8 V of torque]

Connectors

❍ (1) “Y” harness [FUTM4130]
❍ (2) 16" extensions [FUTM3955]

Motor Recommendations

The Factor EP ARF comes with a mounting box for the Great

Planes RimFire brushless out-runner motor. The motor has

been tested with this plane and works well.

❍ Great Planes RimFire .10 (35-30-1250) Brushless Out-

runner Motor [GPMG4595]

ESC (Electronic Speed Control)

A brushless ESC (electronic speed control) is required for
the recommended motor set-up. We recommend using the:

❍ Great Planes Silver Series SS-35A Brushless ESC

[GPMM1830]

Propeller

DECISIONS YOU MUST MAKE

This is a partial list of items required to fi nish the Factor 3D

EP ARF that may require planning or decision making before

starting to build.

Radio Equipment

❍ A 4-channel radio system with four micro servos and

receiver are required for this plane.

The servos and receiver shown in the manual are Futaba®

S3156 Servos (FUTM0656) and the Futaba 617FS FASST™

2.4GHz receiver (FUTL7627)

For our testing we used the:

❍ Great Planes 10  4.5 SF propeller. (GPMQ6660)
❍ APC 10  4.7 SF propeller. (APCQ5015)

Flight Battery

We recommend:

❍ Great Planes Power Series™ LiPo 2200 mAh, 11.1V, 30C

battery (GPMP0861)

or

❍ Flight Power® 2200 mAh 11.1V (FPWP6198)

3

ADDITIONAL ITEMS REQUIRED

Required Adhesives & Building Supplies

● 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.

This is the list of adhesives and building supplies required to

fi nish the Factor 3D EP ARF. Order numbers are provided in

parentheses.

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

❍ 1/2 oz. [15 g] Medium Pro CA+ (GPMR6007)

❍ Drill bits: 1/16" [1.6 mm], 5/64" [ 2 mm]

❍ #1 Hobby knife (HCAR0105)

❍ #11 blades (5-pack, HCAR0211)

❍ Small T-pins (100, HCAR5100)

Optional Supplies and Tools

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

will help you build the Factor 3D EP ARF 580 EP.

❍ Pro 30-minute epoxy (GPMR6047)

❍ Denatured alcohol (for epoxy clean up)

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

❍ CA applicator tips (HCAR3780)

❍ CA debonder (GPMR6039)

❍ Epoxy brushes (6, GPMR8060)

❍ Mixing sticks (50, GPMR8055)

❍ Mixing cups (GPMR8056)

❍ Threadlocker thread locking cement (GPMR6060)

❍ AccuThrow™ Defl ection Gauge (GPMR2405)

❍ CG Machine™ (GPMR2400)

❍ 21st Century® sealing iron [COCR2700]

❍ 21st Century iron cover [COVR2702]

IMPORTANT BUILDING NOTES

● There are two 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" [19 mm] 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" [19 mm] long with

forty threads per inch.

● Whenever the term glue is written you should rely upon

your experience to decide what type of glue to use. When
a specifi c type of adhesive works best for that step, the
instructions will make a recommendation.

● We recommend 30-minute epoxy only, because you will

need the working time 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.

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]

ORDERING REPLACEMENT PARTS

Replacement parts for the Great Planes Factor 3D EP 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 Hobbico web site at www.

hobbico.com. Choose “Where to Buy” at the bottom of the menu
on the left side of the page. Follow the instructions provided
on the page to locate a U.S., Canadian or International dealer.
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].

Parts may also be ordered directly from Hobby Services by

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

Mail parts orders Hobby Services
and payments by 3002 N Apollo Drive, Suite 1
personal check to: Champaign IL 61822

4

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

GPMA2100
GPMA2101
GPMA2102
GPMA2103
GPMA2104
GPMA2105
GPMA2106
GPMA2107
GPMA2108
GPMA2109
GPMA2110
GPMA2111

Fuselage
Wing Set
Tail Surface Set
Canopy Hatch
Cowl
Landing Gear
Wheel Pants
Spinner
Tail Wheel Wire
Wing Bolts
Wing Tube
Decal Sheet

11

5

3

2

4

66

10

4

12

8

9

7

1

Kit Contents

1. Fuselage

2. Cowl

3. Spinner

4. Wheel Pants

5. Wheels

6. Wing Bolts

7. Elevator

8. Stabilizer

5

9. Tail Wheel Set

10. Wing Tube

11. Left Wing

12. Right Wing

PREPARATIONS

Hinge Line Hinge Line

Correct Incorrect

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”
section on page 4.

2. Remove the tape and separate the elevators from the

❏

stab. Use a covering iron with a covering sock on medium
heat to tighten the covering on the wings, fuselage, etc. if
necessary. Apply pressure over sheeted areas to thoroughly
bond the covering to the wood. Caution: The Factor 3D EP

ARF was designed to be strong where needed, but light weight

for excellent fl ight performance. Care must be taken when
assembling the plane to avoid damage.

ASSEMBLE THE WINGS

Install the Ailerons

wing. Install and then remove a servo mounting screw into
each of the holes you have drilled. Apply a drop of thin CA

into the holes to harden the threads. Once the glue has cured

install the servo into the servo opening. Center the servo and
then install a servo arm as shown. The arm should be pointing
towards the wing root.

Do the right wing fi rst so your work matches the photos
the fi rst time through.

Install the Aileron Servos and Pushrods

1. Inside the servo bay a string is taped. Carefully

❏ ❏

remove the tape and string from the servo bay. Tie the string
to the servo lead. Pull the string and the servo lead through
the wing. Untie the string from the lead.

2. Install the servo into the servo opening. Drill a 1/16"

❏ ❏

[1.6mm] hole though the servo mount, into the wood in the

3. Drill a 5/64" [2 mm] hole through the hole in the servo

❏ ❏

arm as shown.

4. Thread a nylon clevis, 20 turns, onto a 6" [152 mm]

❏ ❏

wire pushrod.

Refer to this picture for steps 5-7.

❏ ❏

mounting plate from
the control horn.
Attach the clevis in the
outer hole of a nylon
control horn. Place
the control horn in line
with hole you drilled in
the servo arm. When
positioned properly
the control horn will
rest on a hardwood
plate in the aileron.
Mark the location of
the mounting holes
onto the aileron. Drill
a 1/16" [1.6 mm] hole
on the marks, drilling
through the plywood
plate but not through
the top of the aileron.

5. Cut the

6

6. Install and then remove a #2  3/8" [10 mm] screw

❏ ❏

into each of the holes you have drilled. Apply a drop of thin

CA into the holes to harden the threads. Once the glue has

cured, secure the control horn to the aileron with the screws.

7. Slide a silicone clevis retainer over the clevis. With

❏ ❏

the aileron servo and the aileron centered, mark the aileron
pushrod where it crosses the aileron servo arm. Make a 90°
bend at the mark. Cut the pushrod 3/8" [9.5 mm] past the bend.

Attach the pushrod to the aileron servo arm with a nylon Faslink.

1. Attach the two main landing gear legs to the fuselage

❏

with four 4-40  3/8" [3  10 mm] screws, #4 lock washers
and #4 fl at washers.

You will complete the installation of the wheels and wheel

pants in a later step. Installing the landing gear legs now will

make handling the fuselage easier during the assembly of
the fuselage.

8. Locate a 1/8"  ½" [ 3  13 mm] nylon pin. Glue it into

❏ ❏

the hole at the trailing edge of the root rib. Approximately ¼"
[ 6 mm ] of the pin should extend from the root rib.

9. Repeat steps 1-8 for the left wing panel.

❏

ASSEMBLE THE FUSELAGE

Install the Main Landing Gear

Install the Elevator & Rudder Servos

1. Install a 16" [ 400 mm] servo extension to both the elevator

❏

servo and the rudder servo. Secure the extension to the lead
with tape, a piece of shrink tube (not included) or some other

method to keep them from coming unplugged.

2. Inside the fuselage there is a string running through the

❏

fuselage from the back to the front. The string is taped in place

7

in the back of the fuselage. Take the string from the back of
the fuselage and pull it through the lower servo opening on
the left side of the fuselage. From the right side of the fuselage
install the elevator servo lead through the servo opening and
out of the fuselage through the rudder servo opening on the
left side of the fuselage. Tie both the rudder and elevator servo
leads with the string.

3. From the front of the fuselage pull the servo leads

❏

through the fuselage with the string. Tape the servo leads to
the fuselage to prevent them from falling back into the fuselage.

4. Install the elevator servo into the servo opening on the

❏ ❏

right side of the fuselage. Drill a 1/16" [1.6 mm] hole through
the mounting holes of the servo into the servo mounting rails
in the fuselage.

5. Install and then remove a servo mounting screw into

❏ ❏

each of the holes. Apply a drop of thin CA into the holes to
harden the threads. Once the glue has hardened, install the
servo into the servo opening. Center the servo and then install
a servo arm as shown.

7. Repeat steps 4 - 6 for the rudder servo.

❏

Install the Stab and Elevator

If you have not yet removed the canopy, remove it by sliding

it forward and then lifting the back.

1. Temporarily install the wing tube into the fuselage and

❏

the wings onto the wing tubes. Secure the wing panels to the
fuselage with the nylon wing bolts.

6. Drill a 5/64" [2 mm] hole through the hole in the servo

❏ ❏

arm as shown.

2. Temporarily install the horizontal stabilizer into the

❏

opening in the back of the fuselage. Position it so that the

distance from the tip of the wing to the tip of the stab is of
equal distance.

8

3. Once properly positioned mark the sides of the fuselage

❏

onto the top and bottom of the stab with a fi ne tip felt tip marker.

Remove the stab from the fuselage and cut the covering from

the center of the stab as shown. When cutting the covering

DO NOT CUT INTO THE HORIZONTAL STAB! THIS WILL

WEAKEN THE STRUCTURE. You may want to use the

EXPERT TIP that follows for cutting the covering away.

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.

4. Install the elevator into the slot in the back of the fuselage.

❏

Re-install the stab back into the fuselage.

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. Glue the stab to the fuselage. Check to be sure the

❏

stab is aligned with the wing before the glue dries. Leave the
fuselage undisturbed until the glue dries.

9

6. Locate six hinges. Insert a T-pin through the center of

❏

each hinge.

7. Install the hinges into the slots in the elevator and then

❏

slide the elevator onto the stab.

9. Cut the mounting plate from the control horn. Place

❏ ❏

the control horn in line with the elevator servo arm. Position the

horn on the elevator the same as was done with the ailerons.
Mark the location of the mounting holes onto the aileron. Drill a

1/16" [1.6 mm] hole on the marks, drilling through the elevator.

Install two 1/16"  3/8" machine screws through the control

horn and the elevator, securing them with the nylon plate on
the top of the elevator.

10. Thread a nylon clevis, 20 turns, onto a 6" [152 mm]

❏ ❏

wire pushrod.

8. Apply a couple of drops of thin CA glue onto the top

❏

and bottom of each of the hinges. Allow the glue to harden.

After the glue has dried, pull on the elevator to be sure the

hinges are secure.

11. Slide a silicone clevis retainer over the clevis. With

❏ ❏

the elevator servo and the elevator centered, mark the aileron

10

pushrod where it crosses the aileron servo arm. Make a 90°
bend at the mark. Cut the pushrod 3/8" [9.5 mm] past the
bend. Attach the pushrod to the elevator servo arm with a
nylon Faslink.

12. Repeat steps 9-11 for the rudder pushrod installation.

❏

Install the Motor, Speed Control

and Receiver

1. Assemble your motor following the instructions that came

❏

with it. Install the motor to the fi rewall with four 4- 40  3/8" [3

 10 mm] machine screws, #4 [ 3mm] lock washers and #4

[3 mm] fl at washers. Be sure to apply a drop of thread locker
to the threads on each screw.

2. Cut a piece of the adhesive-backed hook and loop

❏

fastener to fi t the speed control and apply one side of it to
one side of the speed control and the other half to the bottom
of the battery tray in the fuselage. Install the Velcro strap
(without adhesive backing) through the slots in the battery
and around the speed control. Plug the leads from the motor

into the speed control.

11

3. Cut the remaining adhesive-backed hook and loop

❏

fastener to fi t the receiver. Apply the receiver inside the fuselage.

Orient the antenna according to the receiver's instructions.

4. Plug the servo leads, aileron “Y” harness and the speed

❏

control into the appropriate channels in the receiver.

5. Test run the motor to be sure the propeller is turning in

❏

the correct direction.

Install the Cowl

1. There is a small plywood plate inside the fuselage for the

❏

cowl mounting screws. The photo illustrates the approximate
position of the plywood plates.

3. Slide the cowl onto the fuselage. Slide the spinner back

❏

plate onto the motor shaft. Depending on your brand of motor
you may need to enlarge the hole in the back plate. When the

cowl is properly positioned the distance between the spinner

back plate and the front of the cowl should be 3/32" [2.4 mm].

4. Using the lines you put on the fuselage as a reference,

❏

drill a 1/16" [1.6 mm ] hole through the cowl and into the

plywood plate in the fuselage. Secure the cowl with four 3/32"

 5/16" [2.5  8 mm] washer head screws.

5. Do not install the propeller at this time. For safety, this

❏

will be done after the plane is completed.

2. From the center of the plywood plate draw a line back

❏

1" [ 25 mm] with a felt tip pen.

12

Install the Wheel and Wheel Pants

1. Secure the wheel pant to the landing gear with a 2-56

❏ ❏

 1" [2  25 mm] screw and 2-56 nylon stop nut.

3. Locate the parts shown. Install the set screw into the

❏

wheel collar.

2. Slide the wheel onto screw. Install another nylon stop

❏ ❏

nut onto the end of the screw to secure the wheel.

4. Install the nylon bushing into the fuselage.

❏

3. Set the position of the wheel pants and secure the

❏ ❏

pant to the landing gear with a 1/16"  1/4" [1.6  6 mm] wood
screw. Do this for both wheel pants.

5. Assemble the remaining components as shown here.

❏

13

6. Place the metal bracket against the plywood plate. Drill

FULL

THROTTLE

RUDDER

MOVES RIGHT

ELEVATOR

MOVES DOWN

RIGHT AILERON MOVES UP

LEFT AILERON MOVES DOWN

4-CHANNEL RADIO SET UP (STANDARD MODE 2)

❏

a 1/16" [1.6 mm] hole through the holes in the bracket and
into the plywood plate. Secure the bracket to the fuse with
two 1/16"  ½" [1.6  13 mm] screws. Insert the nylon pin on
the tail wheel wire into the hole in the bottom of the rudder.

Glue it to the rudder with a couple of drops of thin CA glue.

placement of the decals. The following tips may be useful for
applying them.

1. Be certain the model is clean and free from oily fi ngerprints

❏

and dust. Prepare a dishpan or small bucket with a mixture
of liquid dish soap and warm water—about one teaspoon of

soap per gallon of water. Submerse the decal in the soap and
water and peel off the paper backing. Note: Even though the

decals have a “sticky-back” and are not the water transfer type,

submersing them in soap & water allows accurate positioning
and reduces air bubbles underneath.

2. Position decals on the model. Holding the decal down,

❏

use a paper towel to wipe most of the water away.

3. Use a piece of soft balsa or something similar to squeegee

❏

remaining water from under the decal. Apply the rest of the

decals the same way.

GET THE MODEL READY TO FLY

Check the Control Directions

1. Turn on the transmitter and receiver and center the trims.

❏

If necessary, remove the servo arms from the servos and
reposition them so they are centered. Reinstall the screws
that hold on the servo arms.

7. Slide the tail wheel onto the tail wheel wire and secure

❏

it with the nylon retainer.

Apply the Decals

2. With the transmitter and receiver still on, check all the

❏

control surfaces to see if they are centered. If necessary, adjust
the clevises on the pushrods to center the control surfaces.

3. Make certain that the control surfaces and the throttle

❏

respond in the correct direction as shown in the diagram. If any
of the controls respond in the wrong direction, use the servo
reversing in the transmitter to reverse the servos connected to
those controls. Be certain the control surfaces have remained

centered. Adjust if necessary.

This photograph and the box photographs show the location

of the decals on the airplane. Refer to these for the exact

14

Set the Control Throws

Use a ruler to accurately measure and set the control throw

of each control surface as indicated in the chart that follows.

If your radio does not have dual rates, we recommend setting

the throws at the low rate setting.

NOTE: The throws are measured at the widest part of the
elevators, rudder and ailerons.

Finish the Model

1. Insert a fl ight battery in the fuselage and use the hook

❏

and loop material to hold the battery in position. Do not connect
the battery to the ESC while balancing the model.

2. Install the propeller and spinner to the motor shaft.

❏

These are the recommended control surface throws:

HIGHLOW

ELEVATOR

Up & Down

RUDDER

Right & Left

AILERONS

Up & Down

We also put exponential into the High rates and the 3D rates to

make the control throws less sensitive around neutral. These
can be set up to your own preference and fl ying style. We put
20% to 30% in the high rate and 50% to 60% in the 3D rates.

IMPORTANT: The Factor 3D EP has been extensively fl own
and tested to arrive at the throws at which it fl ies best. Flying
your model at these throws will provide you with the greatest
chance for successful fi rst fl ights. If, after you have become
accustomed to the way Factor 3D EP fl ies, you would like to
change the throws to suit your taste, that is fi ne. However,
too much control throw could make the model diffi cult to
control, so remember, “more is not always better.”

1-1/4"

[32mm]

19°

1-1/4"

[32mm]

16°

5/8"

[16mm]

13°

1- 3/4"

[44mm]

27°

1-1/2"

[38mm]

19°

1"

[25mm]

21°

3D

2-1/4"

[57mm]

35°

2-3/4"

[70mm]

36°

1-1/4"

[32mm]

27°

Balance the Model (C.G.)

More than any other factor, the C.G. (center of gravity/
balance point) can have the greatest effect on how a model
fl ies and could determine whether or not your fi rst fl ight will
be successful. If you value your model and wish to enjoy it
for many fl ights, DO N OT OVERLOOK T HIS IMP ORTANT
PROCEDURE. A model that is not properly balanced may
be unstable and possibly unfl yable.

At this stage the model should be in ready-to-fl y condition with
all of the systems in place including the motor and battery,

landing gear, covering and paint, and the radio system.

1. Use a felt-tip pen or 1/8" [ 3mm]-wide tape to accurately

❏

mark the C.G. on the top of the wing at the side of the fuselage.

The C.G. is located 4 -1/4" [108mm] back from the leading

edge of the wing at the side of the fuselage.

This is where your model should balance for the fi rst fl ights.
Later, you may wish to experiment by shifting the C.G. up
to 3/16" [5 mm] forward or 1/4" [6 mm] back to change
the fl ying characteristics. Moving the C.G. forward may
improve the smoothness and stability, but the model may
then require more speed for takeoff and make it more diffi cult
to slow for landing. Moving the C.G. aft makes the model
more maneuverable, but could also cause it to become too
diffi cult to control. In any case, start at the recommended
balance point and do not at any time balance the model
outside the specifi ed range.

15

inside your model. It is required at all AMA R/C club fl ying sites
and AMA sanctioned fl ying events. Fill out the identifi cation
tag on page 19 and place it on or inside your model.

Charge the Batteries

Follow the battery charging instructions that came with your
radio control system to charge the batteries. You should always

charge your transmitter batteries the night before you go fl ying,
and at other times as recommended by the radio manufacturer.

Charge the motor battery following the instructions that came
with the battery. Be sure to use the appropriate charger that

is recommended for the battery.

2. With the wing attached to the fuselage, all parts of the

❏

model installed (ready to fl y) and the battery installed, lift it
at the balance point you marked.

3. If the tail drops, the model is “tail heavy” and the battery

❏

pack and/or receiver must be shifted forward or weight must
be added to the nose to balance. If the nose drops, the model
is “nose heavy” and the battery pack must be shifted aft or

weight must be added to the tail to balance. If additional weight

is required, use Great Planes (GPMQ4485) “stick-on” lead. A

good place to add stick-on nose weight is to the motor box
(don’t attach weight to the cowl—it is not intended to support
weight). Begin by placing incrementally increasing amounts of
weight on the fuse over the motor box until the model balances.
Once you have determined the amount of weight required, it

can be permanently attached.

Note: Do not rely upon the adhesive on the back of the lead
weight to permanently hold it in place. Over time the adhesive

may soften and cause the weight to fall off. Use #2 sheet

metal screws, RTV silicone or epoxy to permanently hold

the weight in place.

4. IMPORTANT: If you found it necessary to add any weight,

❏

recheck the C.G. after the weight has been installed.

Balance the Model Laterally

1. With the wing level, have an assistant help you lift the

❏

model by the engine propeller shaft and the bottom of the

fuse under the TE of the fi n. Do this several times.

2. If one wing always drops when you lift the model, it means

❏

that side is heavy. Balance the airplane by adding weight to the

other wing tip. An airplane that has been laterally balanced

will track better in loops and other maneuvers.

PREFLIGHT

Identify Your Model

No matter if you fl y at an AMA sanctioned R/C club site or if
you fl y somewhere on your own, you should always have your

name, address, telephone number and AMA number on or

Range Check

Ground check the operational range of your radio before the
fi rst fl ight of the day. With the transmitter antenna collapsed
and the receiver and transmitter on, you should be able to walk
at least 100 feet away from the model and still have control.
Have an assistant stand by your model and, while you work the

controls, tell you what the control surfaces are doing. Repeat
this test with the motor running at various speeds with an
assistant holding the model, using hand signals to show you
what is happening. If the control surfaces do not respond

correctly, do not fl y! Find and correct the problem fi rst. Look
for loose servo connections or broken wires, corroded wires
on old servo connectors, poor solder joints in your battery

pack or a defective cell, or a damaged receiver crystal from
a previous crash. The problem may be the location of the
antenna. The antenna should be as far away from the ESC
and battery as possible.

MOTOR SAFETY PRECAUTIONS

Failure to follow these safety precautions may result
in severe injury to yourself and others.

● Get help from an experienced pilot when learning to
operate electric motors.

● Use safety glasses when running electric motors.

● Do not run the motor in an area of loose gravel or sand;

the propeller may throw such material in your face or eyes.

● Keep your face and body as well as all spectators away
from the plane of rotation of the propeller as you run
the motor.

● Keep these items away from the prop: loose clothing, shirt
sleeves, ties, scarfs, long hair or loose objects such as
pencils or screwdrivers that may fall out of shirt or jacket
pockets into the prop.

● The motor gets hot! Do not touch it during or right
after operation.

● When working on your plane, remove the propeller if the
motor battery will be connected.

● Always remove the motor battery from the plane
when charging.

16

● Follow the charging instructions included with your charger
for charging LiPo batteries. LiPo batteries can cause
serious damage if misused.

● Never charge LiPo batteries unattended.

AMA SAFETY CODE EXCERPTS

Read and abide by the following excerpts from the Academy

of Model Aeronautics Safety Code. For the complete Safety

Code refer to Model Aviation magazine, the AMA web site or

the Code that came with your AMA license.

CHECK LIST

During the l ast few moments of pre paration your min d may
be elsewhere anticipating the excitement of the fi rst fl ight.
Because of this, you may be more likely to overlook certain
checks and procedures that should be performed before the
model is fl own. To help avoid this, a check list is provided to
make sure these important areas are not overlooked. Many
are covered in the instruction manual, so where appropriate,
refer to the manual for complete instructions. Be sure to
check the items off as they are completed (that’s why it’s
called a check list!).

General

1) I will not fl y my model aircraft in sanctioned events, air shows,
or model fl ying demonstrations until it has been proven to be
airworthy by having been previously, successfully fl ight tested.

2) I will not fl y my model aircraft higher than approximately

400 feet within 3 miles of an airport without notifying the

airport operator. I will give right-of-way and avoid fl ying in the
proximity of full-scale aircraft. Where necessary, an observer
shall be utilized to supervise fl ying to avoid having models fl y
in the proximity of full-scale aircraft.

3) Where established, I will abide by the safety rules for the

fl ying site I use, and I will not willfully and deliberately fl y my

models in a careless, reckless and/or dangerous manner.

5) I will not fl y my model unless it is identifi ed with my name
and address or AMA number, on or in the model. Note: This
does not apply to models while being fl own indoors.

7) I will not operate models with pyrotechnics (any device that
explodes, burns, or propels a projectile of any kind).

Radio Control

1) I will have completed a successful radio equipment ground
check before the fi rst fl ight of a new or repaired model.

2) I will not fl y my model aircraft in the presence of spectators
until I become a qualified flier, unless assisted by an
experienced helper.

3) At all fl ying sites a straight or curved line(s) must be
established in front of which all fl ying takes place with the
other side for spectators. Only personnel involved with fl ying
the aircraft are allowed at or in the front of the fl ight line.

Intentional fl ying behind the fl ight line is prohibited.

4) I will operate my model using only radio control frequencies
currently allowed by the Federal Communications Commission.

5) I will not knowingly operate my model within three miles

of any pre-existing fl ying site except in accordance with
the frequency sharing agreement listed [in the complete

AMA Safety Code].

9) Under no circumstances may a pilot or other person touch
a powered model in fl ight; nor should any part of the model

other than the landing gear, intentionally touch the ground,
except while landing.

1. Check the C.G. according to the measurements

❏

provided in the manual.

2. Be certain the battery and receiver are securely

❏

mounted in the fuse. Simply stuffi ng them into place
with foam rubber is not suffi cient.

3. Extend your receiver antenna and make sure it has

❏

a strain relief inside the fuselage to keep tension off
the solder joint inside the receiver.

4. Balance your model laterally as explained in

❏

the instructions.

5. Use threadlocking compound to secure critical fasteners

❏

such as the motor screws, wheel collar SHC screws
and screw-lock pushrod connectors, etc.

6. Add a drop of oil to the axles so the wheels will

❏

turn freely.

7. Make sure all hinges are securely glued in place.

❏

8. Reinforce holes for wood screws with thin CA where

❏

appropriate (servo mounting screws, control horn
screws, etc.).

9. Confi rm that all controls operate in the correct direction

❏

and the throws are set up according to the manual.

10. Make sure there are silicone retainers on all the clevises

❏

and that all servo arms are secured to the servos with
the screws included with your radio.

11. Secure connections between servo wires and

❏

Y-connectors or servo extensions with vinyl tape, heat

shrink tubing or special clips suitable for that purpose.

12. Make sure any servo extension cords you may have

❏

used do not interfere with other systems (servo arms,
pushrods, etc.).

13. Balance your propeller (and spare propellers).

❏

14. Tighten the propeller nut and spinner.

❏

15. Place your name, address, AMA number and telephone

❏

number on or inside your model.

16. If you wish to photograph your model, do so before

❏

your fi rst fl ight.

17. Range check your radio when you get to the

❏

flying field.

17

FLYING

The Factor 3D EP ARF is a great-fl ying model that fl ies smoothly

and predictably. Factor 3D EP ARF does not, however, possess
the self-recovery characteristics of a primary R/C trainer
and should be fl own only by experienced R/C pilots. As you

can see the airplane is a very lightly built structure. This
is big reason for the terrifi c performance of the model.
Because of the structure it is important that landings
are performed at slow speeds. We recommend the Factor
3D ARF be fl own from hard surfaces or very short grass

fi elds to avoid damage.

CAUTION (THIS APPLIES TO ALL R/C AIRPLANES): If,

while fl ying, you notice an alarming or unusual sound such
as a low-pitched “buzz,” this may indicate control surface
fl utter. Flutter occurs when a control surface (such as an
aileron or elevator) or a fl ying surface (such as a wing or
stab) rapidly vibrates up and down (thus causing the noise).
In extreme cases, if not detected immediately, fl utter can
actually cause the control surface to detach or the fl ying
surface to fail, thus causing loss of control followed by an
impending crash. The best thing to do when fl utter is detected
is to slow the model immediately by reducing power, then
land as soon as safely possible. Identify which surface
fl uttered (so the problem may be resolved) by checking all
the servo grommets for deterioration or signs of vibration.
Make certain all pushrod linkages are secure and free of
play. If it fl uttered once, under similar circumstances it will
probably fl utter again unless the problem is fi xed. Some
things which can cause fl utter are; Excessive hinge gap;
Not mounting control horns solidly; Poor fi t of clevis pin in
horn; Side-play of wire pushrods caused by large bends;
Excessive free play in servo gears; Insecure servo mounting;
and one of the most prevalent causes of fl utter; Flying an
over-powered model at excessive speeds.

Takeoff

Only attempt takeoffs and landings from a hard surface or
very short grass. Before you get ready to takeoff, see how

the model handles on the ground by doing a few practice runs
at low speeds on the runway. Hold “up” elevator to keep the
tail wheel on the ground. If necessary, adjust the tail wheel
so the model will roll straight down the runway. If you need
to calm your nerves before the maiden fl ight bring the model
back into the pits, peak the battery and check all fasteners
and control linkages for peace of mind.

Remember to takeoff into the wind. When you’re ready, point

the model straight down the runway, hold a bit of up elevator
to keep the tail on the ground to maintain tail wheel steering,
and then gradually advance the throttle. As the model gains
speed decrease up elevator allowing the tail to come off the
ground. One of the most important things to remember with
a tail dragger is to always be ready to apply right rudder to
counteract engine torque. Gain as much speed as your runway
and fl ying site will practically allow before gently applying up
elevator, lifting the model into the air. At this moment it is likely

that you will need to apply more right rudder to counteract

motor torque. Be smooth on the elevator stick, allowing the
model to establish a gentle climb to a safe altitude before

turning into the traffi c pattern.

Flight

For reassurance and to keep an eye on other traffi c, it is a

good idea to have an assistant on the fl ight line with you. The
Factor 3D EP ARF with the recommended power system will
only require full throttle in short burst. Most aerobatic fl ight can

be performed at around 1/3 to 1/2 throttle. If you observe the
fl ight of some of the best aerobatic pilots, they very seldom
use full throttle.

Take it easy with the Factor 3D EP ARF for the fi rst fl ight,

gradually getting acquainted with it as you gain confi dence.
Adjust the trims to maintain straight and level fl ight. After fl ying
around for a while, and while still at a safe altitude with plenty
of battery, practice slow fl ight and execute practice landing
approaches by reducing the throttle to see how the model

handles at slower speeds. Add power to see how she climbs
as well. Continue to fl y around, executing various maneuvers
and making mental notes (or having your assistant write them

down) of what trim or C.G. changes may be required to fi ne
tune the model so it fl ies the way you like. Mind your battery

power level, but use this fi rst fl ight to become familiar with your

model before landing. With most electric planes it is best to

have a timer set on your transmitter or a separate timer with
an alarm to alert you when the battery may be getting low.

This will require a few fl ights before determining the maximum

fl ight time you can achieve with the batteries. This will prevent
the downwind auto motor cutoff over the end of the fl ying fi eld.
With the plane properly trimmed you will want to get started
with some aerobatics. This plane is capable of just about every
aerobatic maneuver you can do. Become familiar with the high
and low rate settings before using the 3D rates. If you have

not fl own an airplane with 3D rates you should work your way

into these higher 3D rates cautiously. The extreme throws can

stall the airplane if you are not careful. Over controlling could
also result in unwanted snaps. If you have not fl own 3D you

might want to consider getting help from an experienced 3D

pilot. When executing down line maneuvers it is important to
use good throttle management. Full power down lines could
result in over stressing of the aircraft.

Landing

To initiate a landing approach, lower the throttle while on the

downwind leg. Allow the nose of the model to pitch downward
to gradually bleed off altitude. Continue to lose altitude, but

maintain airspeed by keeping the nose down as you turn onto
the crosswind leg. Make your fi nal turn toward the runway
(into the wind) keeping the nose down to maintain airspeed
and control. Level the attitude when the model reaches the
runway threshold, modulating the throttle as necessary to

maintain your glide path and airspeed. If you are going to
overshoot, smoothly advance the throttle (always ready on
the right rudder to counteract torque) and climb out to make
another attempt. When you’re ready to make your landing fl are

18

and the model is a foot or so off the deck, smoothly increase
up elevator until it gently touches down. Once the model is
on the runway and has lost fl ying speed, hold up elevator to
place the tail on the ground, regaining tail wheel control. Try
to land slowly and gently.

One fi nal note about fl ying your model. Have a goal or fl ight

plan in mind for every fl ight. This can be learning a new
maneuver(s), improving a maneuver(s) you already know,
or learning how the model behaves in certain conditions

(such as on high or low rates). This is not necessarily to

improve your skills (though it is never a bad idea!), but more
importantly so you do not surprise yourself by impulsively
attempting a maneuver and suddenly fi nding that you’ve run

out of time, altitude or airspeed. Every maneuver should be

deliberate, not impulsive. For example, if you’re going to do a

loop, check your altitude, mind the wind direction (anticipating
rudder corrections that will be required to maintain heading),
remember to throttle back at the top, and make certain you
are on the desired rates (high/low rates). A fl ight plan greatly
reduces the chances of crashing your model just because
of poor planning and impulsive moves. Remember to think.

Have a ball! But always stay in control

and fl y in a safe manner.

GOOD LUCK AND GREAT FLYING!

Name

Address

City, State, Zip

This model belongs to:

AMA Number

Phone Number

19

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

GPMA1552 Mnl