Great Planes GPMA1285 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-assemb led 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.

GPMZ0280 for GPMA1285 V1.0© Copyright 2005

Champaign, Illinois

[phone], Ext 5

[e-mail]

INSTRUCTION MANUAL

Wingspan: 99.5 in [2525mm]
Wing Area: 1885 sq in [121.6 dm2]
Weight: 29-32 lb [13150-14520g]
Wing Loading: 35-39 oz/sq ft [107-119 g/dm2]
Length: 95 in [2415 mm]
Engine: 4.2-7.2 cu in [70-120cc]

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

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

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

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

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

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

Hardware and Accessories ..........................................4

Adhesives and Building Supplies.................................4

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

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

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

COMMON ABBREVIATIONS............................................5

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

KIT CONTENTS .................................................................6

ORDERING REPLACEMENT PARTS...............................7

ASSEMBLE THE ST AB.....................................................8

Attach the Elevators.....................................................8

Prepare the Servo Arms..............................................9

Mount the Elevator Servos ..........................................9

ASSEMBLE THE WING...................................................11

ASSEMBLE THE FUSE...................................................12

Install the Tail Gear....................................................12

Attach the Rudder ......................................................13

Install the Rudder Servo(s)........................................13

Install the Main Gear .................................................14

Mount the Engine.......................................................15

Install the Throttle Servo............................................15

Install the Servo Operated Kill Switch .......................17

Assemble and Install the Fuel Tank ...........................18

Mount the Cowl ..........................................................18

FINAL ASSEMBLY..........................................................19

Mount the Stabilizers.................................................19

Finish the Radio Installation ......................................20

Check the C.G...........................................................20

Mount the Wing..........................................................20

Attach the Canopy.....................................................21

Apply the Decals ........................................................21

GET THE MODEL READY TO FLY..................................21

Check the Control Directions.....................................21

Set the Control Throws..............................................22

Balance the Model (C.G.)..........................................22

Balance the Model Laterally......................................23

PREFLIGHT.....................................................................23

Identify Your Model.....................................................23

Charge the Batteries ..................................................23

Balance Propellers.....................................................23

Ground Check............................................................23

Range Check.............................................................23

ENGINE SAFETY PRECAUTIONS.................................24

AMA SAFETY CODE ......................................................24

IMAA SAFETY CODE .....................................................24

CHECK LIST ....................................................................26

FLYING.............................................................................26

Fuel Mixture Adjustments..........................................26

Takeoff .......................................................................27

Flight..........................................................................27

Landing......................................................................27

The Great Planes 1/3-scale Matt Chapman CAP 580 ARF
model is the latest in a long line of amazingly successful full­sized aerobatic aircraft, and this model follows the same
tradition of exceptional aerobatic models. Our CAP 580 is
carefully designed to model Matt Chapman’s impressive
competition plane. While aerobatic airplanes are NEVER
meant to be trainers, neither do they need to be difficult to fly.
In fact, a quality aerobatic airplane is, by definition, simple to
fly through basic maneuvers, making the pilot look good and
allowing the pilot to focus on the fine points and technicalities
of the maneuvers being performed. This model is designed
around this basic philosophy, and the resulting performance
is outstanding! The CAP 580 is no beginner’s airplane, so
you should be experienced with gasoline engines and at
least a 1.8 cu in [30cc] sized aircraft.This is mainly to ease
the transition to being able to judge the size, distance and
speed of a model this large. If you do not have experience
with gasoline engines, BE CERTAIN to get the assistance of
someone with that experience to test fly, trim, and assist you.

For the latest technical updates or manual corrections to the
Great Planes 1/3-scale Matt Chapman CAP 580 ARF visit
the Great Planes web site at

www.greatplanes.com

. Open
the “Airplanes” link, then select the Great Planes 1/3-scale
Matt Chapman CAP 580 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.

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 fly at AMA clubs.
Though joining the AMA provides many benefits, one of the
primary reasons to join is liability protection. Coverage is not
limited to flying at contests or on the club field. It even applies
to flying 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 countr y. 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
flying near full-scale aircraft and avoid flying near or over
groups of people.

AMA

INTRODUCTIONTABLE OF CONTENTS

2

This aircraft is ideal for scale aerobatic competition. IMAC
events are popular in man y areas , and provide a g reat place
to discipline your flying skills, meet great people, and enjoy
your hobby all the more with like-minded pilots. Visit

www.mini-iac.com

for details.

If you would like photos of the full-size Great Planes 1/3­scale Matt Chapman CAP 580, or if you would like to study
the photos to add more scale details, photo packs are
available from:

Bob’s Aircraft Documentation

3114 Y uk on Av e

Costa Mesa, CA 92626

Telephone:[phone], Fax: [phone]

e-mail:

www.bobsairdoc.com

1.Your Great Planes 1/3-scale Matt Chapman CAP 580 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 CAP
580, 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
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 flown this
size and 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.

8.While this kit has been flight tested to exceed normal use,

it is important

that the modeler understand that aerobatic
designs are not race planes, and should not be flown like
one. In addition, “more is better” is the WRONG philosophy
when powering an aerobatic plane. This model has been
professionally designed and tested, and the engine range
carefully selected for great performance. We strongly

recommend NOT exceeding the recommended engine
range. If the plane will be used for extremely high stress

flying outside the aerobatic envelope, such as r acing, 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. It is also important to note
that the warranty is void if the engine range is exceeded.

9. WARNING:The cowl and wheel pants included in this kit
are made of fiberglass, the fibers of which may cause eye,
skin and respiratory tract irritation. Never blow into a part
(wheel pant, cowl) to remove fiberglass dust, as the dust will
blow back into your eyes. Always wear safety goggles, a
particle mask and rubber gloves when grinding, drilling and
sanding fiberglass parts. Vacuum the parts and the work
area thoroughly after working with fiberglass parts.

Remember:Take y our time and f ollo w the instructions to
end up with a well-built model that is straight and true.

This is a partial list of items required to finish the Great
Planes 1/3-scale Matt Chapman CAP 580 that may require
planning or decision making before starting to build. Order
numbers are provided in parentheses.

❏ 6+ channel radio with:

❏ 1-2 standard ser vos (throttle and kill if applicable)
❏ 6 standard size high torque (90+oz/in) servos (2 for

elevator and 4 for ailerons)

❏ 2 giant scale size high torque (150+ oz/in) servos

(used for the rudder – see notes below)

Radio Equipment

DECISIONS YOU MUST MAKE

We, as the kit manuf acturer, provide y ou with a top quality,
thoroughly tested kit and instructions, but ultimately the
quality and flyability of your finished model depends on
how you build it; therefore, we cannot in any way
guarantee the performance of your completed model, and
no representations are expressed or implied as to the
performance or safety of your completed model.

PRO TECT YOUR MODEL,Y OURSELF

& OTHERS...FOLLOW THESE

IMPORTANT SAFETY PRECAUTIONS

IMAA

3

❏ 2 6" [150mm] servo extensions (HCAM2701 for

Futaba) (outer aileron servos)

❏ 3 Y-harnesses (HCAM2751 for Futaba) (inner aileron

servos and rudder servos)

❏ 2 12" [300mm] servo extensions (HCAM2711 for

Futaba) (receiver to each wing)

❏ 1 24" [610mm] servo extension (HCAM2721 for

Futaba) (rudder servos)

❏ 1 36" [914mm] servo extension (HCAM2726 for

Futaba) (elevator servos)

❏ Receiver battery, 2000mAh minimum

RUDDER SERVO OPTIONS:

The large size of the rudder on the Giant CAP 580 requires
a lot of servo torque. Our testing shows that less than 300
inch ounces of servo power results in rudder “blow back”
during certain maneuvers.We have three recommendations
to provide adequate performance:

A.The instructions are written for two quarter scale Futaba

S5050 servos.This is the recommended setup.

B. It is possible to use standard size high torque servos

ganged together.There are two servo openings on either
side of the fuse for standard size servos. A 150+ oz/in
standard size servo can be installed on either side of the
fuse.T wo 2" [50mm] servo arms will need to be purchased.

C.Four standard size high torque servos (with a total of 300+

oz/in torque) can be used.This is the least recommended
of the setups, and will require modifications not covered in
this manual to install the 4 servos.

The recommended engine size range for the Great Planes 1/3­scale Matt Chapman CAP 580 is 4.2-7.2 cu in [80-120cc].The
DA100 provided f antastic po wer with unlimited v ertical and the
weight balanced nicely. If an engine in the upper end of the
size range is used, remember that this is a scale model that is
intended to fly at scale-like speeds, so throttle management
must be practiced.

In addition to the items listed in the “Decisions You Must
Make” section, following is the list of hardware and accessories
required to finish the Great Planes 1/3-scale Matt Chapman
CAP 580. Order numbers are provided in parentheses.

❏ Suitable propeller
❏ R/C foam rubber 1/2" [13mm] - HCAQ1050
❏ 3' [900mm] gasoline fuel tubing (GPMQ4135)
❏ Engine kill switch (GPMG2150) (if using a gas engine)

In addition to common household tools and hobby tools, this
is the “short list”of the most important items required to build
the Great Planes 1/3-scale Matt Chapman CAP 580.

Great

Planes Pro™CA and Epoxy glue are recommended.

❏ 1 oz. [30g] Thin Pro CA (GPMR6002)
❏ 1 oz. [30g] Medium Pro CA+ (GPMR6008)
❏ Pro 30-minute epoxy (GPMR6047)
❏ Pro 6-minute epoxy (GPMR6045)
❏ Microballoons (TOPR1090)
❏ Drill bits: 1/16" [1.6mm], 5/64" [2mm], 3/32" [2.4mm], 7/64"

[2.8mm], 1/8" [3.2mm], 9/64" [3.6mm], 5/32" [4mm], 11/64"
[4.4mm], 3/16" [4.8mm], 13/64" [5.2mm], 7/32" [5.6mm],
15/64 [6mm], 1/4" [6.4mm], 17/64" [6.7mm], 9/32" [7.1mm]

❏ Tap handle (GPMR8120)
❏ Small metal file
❏ Velcro

®

hook & loop (1" x 6" [25 x 150mm], GPMQ4480)

❏ Stick-on segmented lead weights (GPMQ4485)
❏ #1 Hobby knife (HCAR0105)
❏ #11 blades (5-pack, HCAR0211)
❏ Single-edge razor blades (10-pack, HCAR0212)
❏ Medium T-pins (100, HCAR5150)

Here is a list of optional tools mentioned in the manual that
will help you build the Great Planes 1/3-scale Matt Chapman
CAP 580.

❏ 4 oz. [113g] aerosol CA activator (GPMR634)
❏ CA applicator tips (HCAR3780)
❏ CA debonder (GPMR6039)
❏ Epoxy brushes (6, GPMR8060)
❏ Mixing sticks (50, GPMR8055)
❏ Mixing cups (GPMR8056)
❏ Pliers with wire cutter (HCAR0630)
❏ Robar t Super Stand II (ROBP1402)
❏ Masking tape (TOPR8018)
❏ Milled fiberglass (GPMR6165)
❏ Threadlocker thread locking cement (GPMR6060)
❏ Denatured alcohol (for epoxy clean up)
❏ Rotar y tool such as Dremel

®

❏ Rotar y tool reinforced cut-off wheel (GPMR8200)
❏ Ser vo horn drill (HCAR0698)
❏ Laser incidence meter (GPMR4020)
❏ 36" bar for incidence meter (GPMR4021)

❏ Top Flite

®

MonoKote®sealing iron (TOPR2100)

❏ Top Flite MonoKote trim seal iron (TOPR2200)
❏ Top Flite MonoKote heat gun (TOPR2000)

Covering T ools

Optional Supplies and Tools

Adhesives and Building Supplies

Hardware and Accessories

ADDITIONAL ITEMS REQUIRED

Engine Recommendations

4

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

length. For example #6 x 3/4" [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 necessar y for the best fit.

• Whenever the term

glue

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

• Whenever just

epoxy

is specified you may use

either

30­minute (or 45-minute) epoxy or6-minute epoxy. When 30­minute epoxy is specified it is highly recommended that
you use only 30-minute (or 45-minute) epo xy, because you
will need the working time and/or the additional strength.

• Photos and sketches are placed before the step they
refer to .Frequently you can study photos in following steps
to get another view of the same parts.

• The Great Planes 1/3-scale Matt Chapman CAP 580 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 fello w modeler would giv e y ou
some.MonoKote is applied with a model airplane covering
iron, but in an emergency a regular iron could be used. A
roll of MonoKote includes full instructions for application.
Following are the colors used on this model and order
numbers for six foot rolls.

Red TOPQ0201
Cub Yellow TOPQ0220
Orange TOPQ0202
Green TOPQ0214
Black TOPQ0208
Purple TOPQ0225
Blue TOPQ0206
Sapphire Blue TOPQ0227
White TOPQ0204

• 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 that will
have little or no eff ect on the way your model will fly, please
expect slight deviations between your model and the
published values.

Fuse = Fuselage

Stab = Horizontal Stabilizer

Fin = Vertical Fin

LE = Leading Edge

TE = Trailing Edge
LG = Landing Gear
Ply = Plywood

" = Inches

mm = Millimeters

SHCS = Socket Head Cap Screw

COMMON ABBREVIATIONS

IMPORTANT BUILDING NOTES

5

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 y ou need assistance with assemb ly,
contact Product Support. When repor ting 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

Champaign, IL 61822

Telephone: [phone], ext. 5

Fax: [phone]

E-mail:

[e-mail]

KIT INSPECTION

6

1 Cowl
2 Fuselage
3 Canopy/Hatch
4 Aluminum Spinner
5 Main Gear
6 Wheels
7 Wheel Pants

8 Instr ument Panel

9 Stab and Elevators
10 Stab T ubes
11 Rudder
12 Wings and Ailerons
13 Wing T ube

Kit Contents (Photographed)

Brass Quick Connect Body (2)
4-40 Threaded Steel Cevis (4)
Axles (2)
4-40 Blind Nut (8)
8-32 Blind Nut (18)
Nuts for Axles (2)
1/4-20 Blind Nuts (6)
4-40 Lock Nut (8)
Nylon Clevis (1)
Nylon Retainer (2)
36" Flexible Pushrod Tube (2)
36" Inner Flexible Pushrod Tube (2)
Retainers (5)
6/32 x 1/4" Socket Head Cap Screws (4)
#4 x 5/8" Wood Screw (8)
4-40 Set Screw (2)
8-32 x 3/4" Socket Head Cap Screws (18)
4-40 x 1/2" Socket Head Cap Screws (8)
4-40 x 3/4" Socket Head Cap Screws (2)
1/4" Flat Washers (4)
3/16" Wheel Collars (4)
2-56 x 4" Wire Threaded One End (4)
4-40 x 12" Fully Threaded Rod (1)

#4 Lock Washer (14)
#4 Flat Washer (14)
#8 Lock Washer (18)
#8 Flat Washer (18)
1-1/2" Tailwheel (1)
1/4" x 2-1/2" Hex Bolt (4)
1/4" Lock Washer (4)
Antirotation Dowels for the Wing (4)
Engine Spacers, 6mm Thick, Aluminum (20)
Fuel Tank (1)
Pilot (1)
Pin Hinges (33)
Servo Tra y (1)
Stab Tube Aft (1)
Stab Tube Front (1)
Decal Sheet (2)
Tail Gear Assembly (1)
Ball Link Set (8)
Control Horn Set (8)
Pushrods 2-1/2" (6)
Pushrods 4-1/2" (2)
Servo Arm Set (1)

Kit Contents (Not Photographed)

KIT CONTENTS

1

4

3

5

6

7

13

8

9

12

2

11

10

7

ORDERING REPLACEMENT PARTS

Replacement parts for the Great Planes 1/3-scale Matt Chapman CAP 580 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

. Choose “Where to Buy” from 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 av ailab le , 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 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 Product Support by e-mail at

[e-mail]

,

or by telephone at [phone].

Replacement Parts List

Or

der Number Description How to Purchase

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

Instruction manual...........................................Contact Product Support

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

Kit parts listed below .......................................Hobby Supplier

GPMA2650............Wing Set

GPMA2651............Fuselage

GPMA2652............Stabilizer/Elevator Set

GPMA2653............Stabilizer Joiner Tubes

GPMA2654............Rudder

GPMA2655............Wing Joiner Tube

GPMA2656............Cowl

GPMA2657............Hatch/Canopy

GPMA2658............Landing Gear

GPMA2659............Wheel Pants

GPMA2660............Spinner

GPMA2661............Instrument Panel

GPMA2662............Tailwheel Assembly (without wheel)

GPMA2663............Decal Set

❏❏1. Cut the covering from the five holes for the hinge

points in the trailing edge of one of the stab halves and the
leading edge of the elevator.

❏❏2.Temporarily attach the elevator to the stab with five

hinges. Note the inner hinges go in at an angle to clear the
stab tube.Check that there is free movement of the elevator
through all of its throw. Remove the hinges.

❏❏3. Place a drop of oil on the pivot point of each of

the hinges.

❏❏4. Mix up some 30-minute epoxy and microballoons

(if using mixing cups, approximately 1/4 oz.of microballoons
added to 1/8 oz. of mixed epoxy is recommended). Use a
piece of music wire to thoroughly apply the mixture in the
holes in the stab and elevator.Use the wire to get the epoxy
out of the outer edge of the opening of the holes in the
elevator so it doesn’t get into the hinge pins.Wipe away any
epoxy around the outside of the holes with a paper towel.

❏❏5.Fit the hinges in the stab and elevator .Tape the stab

to the elevator and set aside until the epoxy has cured.

❏ 6. Repeat steps 1 through 5 for the other stab half.

Attach the Elevators

ASSEMBLE THE ST AB

8

❏ 1. Drill and tap 4-40 threads in the two outermost holes

of each of the six single-sided servo arms.

❏ 2.Drill and tap 4-40 threads in the outer hole of the 4-1/4"

[106mm] servo arm.

❏ 3.The nylon ball links have a number on one side of them.

With the number facing up, press the brass ball into each of
the nylon balls link from the bottom, opposite the number.

❏ 4. Attach the ball link to the inner tapped hole of one of

the one-sided servo arms with 4-40 x 1/2" [13mm] Socket

Head Cap Screw [SHCS] brass stand off and 4-40 lock nut.
Note: The number goes toward the servo arm.

❏ 5. Attach the ball links to the five other single-sided

servo arms.

❏❏1.Trim the covering from the servo opening and stab

mounting holes in the bottom of one stab.

❏❏2.Mount the elevator servo to that stab half, using the

hardware provided with your servos, remembering to harden
the threads with thin CA.

❏❏3. Center the nylon pivot washer on the plywood

support and align it with the leading edge of the elevator.

Mount the Elevator Servos

Note:The included aluminum servo arms are designed with

plastic inserts, allowing the arms to work with all current
Futaba, Hitec, Airtronics and JR servos.The inserts are also
designed so that the centering of the arm can be adjusted
by rotating the insert and then re-attaching the arm.

Prepare the Servo Arms

9