Carl Goldberg GBGA1072 User Manual

Lightnin’ Bug

Instructions

Warning

A radio-controlled airplane is not a toy. It is capable of causing serious bodily injury
and property damage. It is the buyer’s responsibility to build this kit correctly and
install the motor, radio, and other equipment. The first test flights should be made
only with the assistance of an experienced R/C flyer. The model must always be
operated and flown in accordance with the safety standards of the Academy of
Model Aeronautics.

Per The Federal Communications Commission, you are required to use only those radio
frequencies specified “for Model Aircraft”.

Copyright 2002

PO Box 818 4462 Oakwood Rd Oakwood, GA 30566 Phone [phone]

1

Parts Identification

Wing Panels

Fuselage, Stabilizer/elevators, & Fin/rudder

2

Included Hardware

Speed 400 motor
Gearbox with 3 gear ratios
Propeller
Prop adapter
Main Wheels (2)
Wire Landing Gear
Wire pushrods (2)
Nylon Clevis (2)
Nylon Control Horns (2)
CA Hinges
Wheel Collars (4)
Nylon EZ Clips (2)

#64 Rubber Bands

Wing Panels
Fuselage Assembly
Horizontal Stabilizer and elevators
Vertical Fin and rudder

(Wire pushrods not shown).

Material List

Front Clear plastic windshield
Clear Side windows, 2 left and right
Hardwood dihedral brace
Wire tailskid

Additional Items Required

5-minute epoxy
30-minute epoxy
Medium CA glue
Thin CA glue
Canopy glue

Xacto knife with #11 blade

Masking tape
Small square
15-amp speed control
Radio Equipment

3

Wing Construction

We begin construction with the
wing. Before starting construction, it is
a good idea to place wax paper on the
building surface to prevent gluing the
wing to the building board.

Locate the two wing halves
and the ¼” dihedral brace taped to one
wing panel.

Trial fit the dihedral brace in
one of the wing halves.

When you are satisfied with the
fit, remove the wing panels from the
dihedral brace. Mix about one ounce
of 30-minute epoxy and coat the
inside of the slot in each wing panel,
the dihedral brace, and the root rib of
each wing.

Now slide the dihedral brace
into one wing panel. Wipe away any
excess epoxy that may have oozed
out from inside the slot. Slide the
other wing panel onto the brace,
wiping away any excess epoxy with
a paper towel wet with alcohol. Tape
in place with masking tape until the
epoxy has cured.

Now slide the other wing panel
onto the dihedral brace until it meets
the other wing root. Check for
alignment. If necessary, slightly sand
the corners of the dihedral brace for
proper fit.

When the epoxy has cured,
remove the masking tape and set the

4

wing aside. The wing assembly is
now completed.

Tail Construction

Locate the horizontal stabilizer,
elevator, fin & rudder. Notice that
the hinges are installed but not
glued.

Next, with a sharp #11 Xacto
Blade, remove the covering from the
bottom of the fin.

Remove the rudder from the
fin. At the rear bottom edge if the
fin, it is necessary to remove the
corner with a razor blade to allow
clearance for the elevator. ¼ inch in
and ¼ inch up is enough.

Locate the fuselage and the
stabilizer. Use masking tape on top
of the stab and measure from each
tip to locate the centerline of the
stab. Place the stab on top of the
fuselage and center it using the
marks on the masking tape as a
guide. Check the alignment, and
temporarily tape it in place with
masking tape. The trailing edge of

the stab should be inset ¼” from
the rear of the fuselage.

5