Carl Goldberg GBGA1064 User Manual

1

WARNING

A radio-controlled model is not a toy and is not intended for persons under 16 years old. Keep
this kit out of the reach of younger children, as it contains parts that could be dangerous. A radio­controlled model is capable of causing serious bodily injury and property damage. It is the buyer's
responsibility to assemble this aircraft correctly and to properly install the motor, radio, and all other
equipment. Test and fly the finished model only in the presence and with the assistance of another
experienced R/C flyer. The model must always be operated and flown using great care and common
sense, as well as in accordance with the Safety Code of the Academy of Model Aeronautics
(www.modelaircraft.org). We suggest you join the AMA and become properly insured prior to flying
this model. Also, consult with the AMA or your local hobby dealer to find an experienced instructor in
your area. Per the Federal Communications Commission, you are required to use only those radio fre­quencies specified "for Model Aircraft."

LIMITED WARRANTY

Carl Goldberg Products, Ltd. has inspected and certified the components of this aircraft. The company urges the buyer to per­form his own inspection, prior to assembly, and to immediately request a replacement of any parts he believes to be defective for
their intended use. The company warrants replacement of any such components, provided the buyer requests such replacement
within a period of 90 days from the date of purchase and provided the defective part is returned, if so requested by the company.

No other warranty, expressed or implied, is made by the company with respect to this kit. The buyer acknowledges and under­stands that it is his responsibility to carefully assemble the finished flying model airplane and to fly it safely. The buyer hereby
assumes full responsibility for the risk and all liability for personal or property damage or injury arising out of the buyer's use of the
components of this kit.

CARL GOLDBERG PRODUCTS, LTD.

P.O. Box 818 Oakwood GA 30566 Phone #[phone] Fax # [phone] www.carlgoldbergproducts.com

© Copyright 2005

CCUUBB AARRFF

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ITEMS NEEDED TO COMPLETE THIS AIRCRAFT

 1 RADIO GUIDANCE SYSTEM (4 CHANNEL

MINIMUM REQUIRED WITH 5 SERVOS)

 2 12” AILERON SERVO EXTENSION WIRES
 1 Y-HARNESS

 1 ENGINE .46-.61 2-CYCLE, .70-.91 4-CYCLE

AND MUFFLER

 1 CA ACCELERATOR
 1 2 OZ. BOTTLE CA MEDIUM GLUE
 1 1/2 OZ. BOTTLE CA THIN GLUE

 1 20 MINUET EPOXY
 1 1/4” FOAM RUBBER

OPTIONAL:

 1 1/6 PILOT FIGURE
 1 SWITCH HARNESS
 1 Spinner Nut

NOTE: The Cub ARF comes in two colors

Red, White, & Blue

covering matches: Midnight Blue(#885) and

White (#870) True Red (Oracover)

Yellow:

covering matches: Cub Yellow

Black (Oracover)

TOOLS AND SUPPLIES FOR ASSEMBLY.

 MODELING OR UTILITY KNIFE
 WORK SURFACE (24" X70")
 ELECTRIC DRILL
 1/16”, 3/32”,1/8", 3/16”, 5/32”, 1/4”, 5/64”

7/32” DRILL BITS

 SMALL STANDARD & PHILLIPS SCREW-

DRIVERS

 MASKING TAPE
 NEEDLE NOSE PLIERS
 MOTO TOOL
 24” RULER
 FLEXIBLE STRAIGHT-EDGE
 30-60-90° x 6" TRIANGLE
 SOFT PENCIL
 A FEW STRAIGHT OR "T" PINS
 ADJUSTABLE WRENCH
 WIRE CUTTER (DYKES)
 OPTIONAL HEAT GUN/COVERING IRON
 ACID BRUSH
 ELECTRICAL TAPE
 SOLDERING IRON, FLUX, SOLDER
 PIECE OF MEDIUM SANDPAPER
 5 FT. LENGTH OF STRING

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INTRODUCTION

USING THIS INSTRUCTION MANUAL

Before you begin assembling your Cub ARF, take some
time to read through this entire instruction book. It is
designed to take you step-by-step through the process and
to give you added information on engine and radio selec­tion and set-up, balancing your aircraft, and flying your
model. The time you spend will speed the assembly
process and help you avoid problems.

PREPARING FOR ASSEMBLY

You will need a work area of approximately 24 x 70" which has
been covered to protect it from adhesive, as well as cuts and
other damage. Many people cover their work area with a
sheet of dry wall (sheet rock) and/or waxed paper t o pre­vent CA Glue and Epoxy from ruining the work surface.

CONSTRUCTION TIPS

IMPORTANT: ALWAYS READ A FEW STEPS AHEAD.
This will alert you to coming instructions and will help you
plan accordingly.

As you work, CHECK OFF EACH STEP in the box provid­ed, so that you are sure you do not forget anything.

Do not hesitate to ask questions. Your local hobby dealer
and area flyers will most likely be happy to help, as they
want you to have a successful flying experience. You may
also receive technical assistance from Carl Goldberg
Products, Ltd. via e-mail
([e-mail]) or by telephone 1­678-450-0085.

ADHESIVES & GLUING TECHNIQUES

CA adhesives are specially formulated to firmly glue the
plywood, hardwood, and balsa used in your model and to
withstand the vibration and stresses of high performance
flight. However, there are times, such as when you are
installing the stabilizer and fin on the fuselage and want
more set-up time for careful alignment and positioning,
then you should use epoxy.. Occasionally, you also will
want to use thin CA, which "wicks" into the surrounding
areas. Aliphatic resin glue or similar water-based glues can
also be used, but they will add to the assembly time
because they dry so much more slowly than CA glue.
Remember, when ever using any CA, you must be careful
to read instructions thoroughly, as you will have only sec­onds for positioning of parts. Be sure to trial fit parts
together before gluing. Also, never use watery THIN type
CA glue for gluing plywood and hardwood parts. Thin CA's
do not adequately bond these areas.

CAUTION

Some people may experience an allergic reaction when
exposed to fumes from CA glue or epoxy. As with paints,
thinners, and solvents, it is always important to use glues
only where there is adequate ventilation to carry fumes
away. A fan is recommended. Also, special care must be
taken when using CA, as it will bond skin as well as other
surfaces. Before using any CA, carefully read all label pre­cautions. When using CA, protective eye-wear and care in
keeping the glue away from the face is highly recommend­ed. If CA does happen to get into the eye, hold lid open
and flush with water only. Seek immediate medical atten­tion.

COVERING

The Cub ARF is covered in a premium polyester film cho­sen by many of the world's top flyers for its beauty, tough­ness, and ease of application and repair. It is not uncom­mon for ARF's to develop a few wrinkles in transit. If this
is true of your model, the situation is easily corrected.
Before you begin putting the pieces together, run over the
seams of the covering to make sure they are secure. Then
apply heat to the center surfaces of each section with an
iron (either specially designed for airplane use or the more
cumbersome household iron) or use a modeling heat gun.
Apply the heat (set at about 350° F), following along with a
soft cloth and pressing down on the covering as you go
around. This will more firmly set the covering adhesive into
the wood and keep your aircraft covering tight and smooth
in the future.

One of the great advantages of polyester film is that it can
be applied over itself without causing gas bubbles. This
allows you to repair your aircraft, as well as to customize it
in a number of ways. If, due to a flight mishap, you get a
hole or similar covering damage, simply trim away the
ragged edges and then apply a patch, following the direc­tions that come with your covering , which is available at
your hobby dealer.

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1.  Collect the following parts:

(1) Left wing
(1) Right wing
(1) Left aileron
(1) Right aileron
(8) Jet hinge

2.  Locate the pre-cut aileron hinge slots in both

wing halves. Using a hobby knife (#11 blade),
slide the blade into each slot to make sure it is
cleanly cut.

 Repeat this process with the ailerons, making

sure all hinge slots are clean.

3.  Place a straight pin into the center of each of

the four CA hinges.

 Slide each hinge into the hinge slots on one of

the wing halves. The pin will prevent the
hinges from going further than halfway into
the wing.

6.  Keeping the aileron and wing in position,

apply 3 or 4 drops of thin CA glue to the small
exposed area of each hinge.

 Turn the assembly over and again apply 3 or

4 drops of thin CA glue to the exposed hinge
surfaces.

 Allow to dry for 10 minutes before flexing the

aileron.

7.

 Repeat the above steps for the other half of

the wing.

WING ASSEMBLY

AILERON INSTALLATION

4.  Select the aileron for the wing on which you

are working and insert the exposed half of
each hinge into the aileron slots.

 Slide the aileron toward the wing until no gap

remains between the aileron and the wing.

5.

 Carefully check the alignment of the aileron. It

should be centered, with about 1/32" on either
end.

 When satisfied with the alignment, remove the

straight pins, being sure to keep the aileron
tight to the wing. You may wish to apply a few
pieces of masking tape to keep the pieces in
place.

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AILERON SERVO INSTALLATION

1.  Collect the following parts:

(1) Left wing
(1) Right wing
(2) Servos
(2) 12” Servo Extensions
(1) Wheel Collar
(1) 24” Thread ( Not Included)

2.  Locate the the servo hole in the bottom of

wing.

 Carefully cut the covering over the servo

holes.

3.  Tie the string to the wheel collar.

 Insert the wheel collar with the string into the

servo hole.

 While holding the wing up on the root rib, drop

the other end of the string with the nut into the
aileron servo hole. Allow the nut to fall down
through the wing rib holes till it rest against
the center root rib.

 Pull the wheel collar with the string out the

hole in the bottom of the wing next to the cen­ter rib.

IMPORTANT! To ensure that any connections locat­ed inside the wing will not come loose, either when
the wires are pulled, or during flying, always tape

them securely together with electrical tape.

4.  Attach the aileron servo wire to the12" exten-

sion and securely tape the connection togeth­er.

 Tie one end of the string to the aileron servo

extension.

3.

 SLOWLY pull on the string until the end of the

12" extension comes out of the hole.

 Tape the extension securely to the wing, so

that it will not slide back in while you are work­ing.

4.  Using the screws supplied with your radio,

screw the servos to the mounting plates in the
wings.

 Repeat these steps for the other aileron

servo.

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AILERON CONTROL HORN INSTALLATION

1.  Collect the following items

(2) Large control horn with back plate
(4) 2-56 x 3/4" screw
(2) .072 x 10" threaded wire
(2) Snap link
(1) Nylon Swivel Keeper

2.  With the aileron servo in place, make a mark

at a 90º degree angle to the trailing edge and
in line with the side of the servo.

3.  Position the control horn so that the snap link

holes are on the mark just made and right next
to the hinge line, as shown.

4.

 Using a 5/64" drill bit, make a pilot hole in

each screw location.

 Mount the control horn with the 2-56 x 3/4"

screws.

5.  Thread the .072 x 10” rod onto the snap link.

Make sure the rod shows in the center of the
snap link.

 Place the snap link in the second hole from

the top on the control horn.

6.  Making sure the aileron is in neutral (level)

position, mark where the wire meets the hole
on the servo arm.

 Remove the wire and cut it about 1/2" beyond

the mark.

1/16"

 Make a 90º bend (or a "z" bend, if preferred)

in the wire and insert the wire in the servo
arm.

 Secure the wire with a nylon swivel keeper.
 Repeat for the other servo in the other wing.

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WING STRUT BRACKET INSTALLATION

1.  COLLECT THE FOLLOWING ITEMS:

(4) S

TRUT MOUNTING BRACKET

(4) #2 X 3/8 SHEET METAL SCREW

2.  Place a small drop of thin CA glue into the

wing strut mounting holes found in the bottom
of the wing above and below the aileron
servo.

 Slightly bend the strut mounting bracket in the

middle.

3.  Using #2 x 3/8 sheet metal screw, mount the

bracket so that it is pointing to the fuselage.

2.  Using epoxy, mount the 5/16 x 1-3/4” dowels

into the holes in the notch of the leading edge
of the wing. Make sure to leave about 1/2” of
dowel sticking out of the front of the wing. You
may wish to slightly taper the exposed dowel
ends for ease of insertion into the fuse holes.

1.  Collect the following items:

(1) Right wing
(1) Left wing
(2) 5/16 x 1-1/2" dowel
(1) 3/4” x 17-1/2” aluminum tube

MOUNTING WING TO FUSELAGE

5.  Insert the aluminum tube into one wing half

and push the tube into the wing until it stops.
Then insert the other wing half onto the tube
and slide the wing halves together.

 Tilt the leading edge of the wing down into the

fuselage and insert both dowels in the holes
that are in the front of the fuselage

 Insert a 1/4-20 x 2” nylon bolt into each hole in

the wing bolt pad and then insert each screw
into the holes near the trailing edge of the
wing.

 Tighten both screws down until they are tight.

STAB INSTALLATION

1.  Collect the following parts:

(1) Stabilizer
(1) Wing/fuse assembly

3.  Place a piece of masking tape on each wing

tip, just above the aileron hinge line, as
shown above.

 Measuring out from the center joint of the

wing,make a mark on the tape at 32-1/2".
Repeat for the other side of the wing

4.

 Place two strips of masking tape along the

edge of the stab, next to the outer stab tips
and above the hinge line.

 Measure the total length of the stab along the

hinge line and locate the centerline with a
mark.

 Measure 9-1/2” out from the centerline and

make a mark on the masking tape on both
the left and the right side of the stabilizer.

32-1/2"

TAPE

TAPE

32-1/2"

9-1/2"

9-1/2"

8

5.  From the center point on the stab, draw a ver-

tical line up to the top of the stab.

 Place masking tape on the top of the fuse, just

in front of the stab.

 Measure and mark the center point on the

tape.

 Mark a centerline on the fuselage, just behind

the wing.

 Place a piece of masking tape along the top of

the fuselage, as shown, and draw a line from
the center mark in front of the stab up to the
center mark below the wing.

6.  Place the stab on the platform with the center

of the stab lined up with the center point on
the fuse.

 Measuring from the mark on each wing tip to

the mark on the stab tip, make sure the dis­tance "X" on the right side is the same as the
distance on the left side.

TAPE

x

x

7.  Check to see that the stab is level (parallel)

with the wing. If necessary, insert paper strip
shims to achieve proper alignment.

8.  When satisfied with the alignment of the stab,

temporarily tape it securely in place.

 Mark the area on the bottom of the stab where

it rests on the fuse.

 Remove the stab from the fuse and, working

1/4" inside the drawn lines, carefully remove
the covering from the bottom of the stab. BE
CAREFUL TO AVOID CUTTING THE WOOD.

9.

 Spread epoxy on both the bottom of the stab

and the stab platform of the fuse.

 Replace the stab on the platform and, after

again checking the alignment of the stab to
the wing, allow the epoxy to dry thoroughly.

FIN INSTALLATION

1.  Insert the elevator joiner in through the space

behind the stabilizer slot.