Goldberg Falcon Sires a Junior
July/August 1963 American Modeler
July / August 1963 American Modeler
[Table of Contents]
Aircraft modeling has undergone
significant changes over the decades - both in technology and preferences. Magazines like American Aircraft Modeler, and
American Modeler before that, were the best venues for capturing snapshots of the status quo of the day. Still, many things
never change, so much of the old content is relevant to today's modeler.
Whether you are here to wax nostalgic,
or are just interested in learning history, hopefully you will find what you are seeking. As time permits, I will be glad
to scan articles for you. All copyrights (if any) are hereby acknowledged.
the early 1960s, Carl Goldberg Models was reaching a crescendo in its kit
manufacturing business. Many successful models were already on the hobby
shop shelves serving all genres of the hobby - free flight, control line,
and radio control. The Falcon was a particularly big hit because it served
as both a trainer and an intermediate flyer. A newbie could buy a Falcon
and use if from his maiden flight to introductory aerobatics. Building off
the success of the Sr. Falcon to come up with a 1/2A size version. Rudder-only
was still popular at the time, so the Jr. Falcon launched into a market
ready for another option. I don't recall ever owning a Jr. Falcon, but I
have owned a couple 1/2A Skylanes and a Skylark.
Note in the advertisements
that the price for a Jr. Falcon was $4.95 in
and then $5.95 three yeas later in
This edition of American also ran a feature titled, "Carl
Goldberg: Mr. Modeling
Goldberg Falcon Sires a Junior
One Good Kit Breeds Another: Goldberg's Falcon Sires a Junior
first try at a commercial R/C design by Carl Goldberg turned out so successfully
that he has marketed the same design in smaller size; both are products
of Carl Goldberg Models (Chicago). Let's dig into the original big one,
to see what we can find.
Design Concept. Carl chose a medium size
trainer which may be flown with the simplest Rudder-only installation, or
the smaller reed receivers and servos to fly with . Rudder-Elevator-Motor
Control. The shoulder-wing configuration is generally more "forgiving" than
the low wing.
Since it is intended to fly with elevators, if desired,
the builder may wish to try inverted operation, and the semi-symmetrical
wing is accepted as a fair compromise between good rightside-up flight and
the inverted maneuvers - including outside loops. Airfoil is of moderate
thickness. The stab is also medium thick, fully symmetrical.
is fairly modest, so if the plane is built for rudder-only, it could be
increased to provide better rolling properties - assuming the builder was
interested in violent acrobatics. If elevators are to be used, stick to
For good ground handling and ROG's, we find a trike landing
gear. Nose gear furnished with the kit is not steerable. A generous distance
between nose and main gears and wide main wheel tread assure stability in
taxiing, takeoff or landing.
Construction. The Falcon is of simple
construction. Two fuselage sides must be pieced together with a "sawtooth"
joint; this is strengthened by side doublers which cover it. Fuselage formers
are keyed into slots in the sides; both top and bottom are keyed, as are
such additional parts as the tail assembly seat. It would be pretty difficult
to put the fuselage together any other way but true.
bearers are furnished along with plywood "breakaway" motor mounting plate.
This plate used early in the fuselage assembly assures that the sides are
Landing gear main and nose wires are formed from 1/8" music
wire, the nose strut having a 4-loop shock spring in it. Main gear is built
into the fuselage bottom.
The main wing is rectangular, all ribs
are die-cut, leading and trailing edges are notched for rib positioning.
The edges are shaped to required cross-section. To spare the novice modeler
some of the woes of assembling a wing with underside convex, "Symmet-Tru"
construction is featured. This includes positioning tabs on the underside
of some wing ribs, near the leading edge, easily removed after the frame
is complete. The stab, quite simple, also has rib tabs to aid assembly.
Fin and rudder are of sheet balsa, as are the elevators.
The plane was test flown with Min-X 6 channel equipment and three Transmite
servos. It may be used with engines from .09 to .19, with .15 being favored;
the Multi test plane had an O.S. Max .15 RC engine, and a 2-oz deBolt clank
tank (there is ample room for a much larger tank).
needed to complete the plane that are not furnished in the kit are specified
by name and size. The balsa has been carefully selected; wing rib sheets
are light but stiff quarter-grain stock; wing spars are hard balsa (a little
heavier, but they'll better stand the beating most beginners will give the
plane), wing tips are cut from same block of balsa, so they will be matched
Specifications. Span-56", chord-10", wing area-558
sq. in. Test plane with 6 channel equipment weighed 3 1/2 lb. Equipment
space under wing, 10 x 3 1/4," high x 2 3/4" wide; ample space for all batteries
under fuel tank in forward compartment. JUNIOR FALCON
Knowing a good thing when he has one, Goldberg scaled his
Falcon down to smaller size. Appearance, design and construction features
are so much like the 56" plane you would have difficulty telling them apart
in the air - except for the noise. Junior is intended especially for any
.049 engine ... which gives lots of leeway.
The fuselage sides
have same W-joint in the center, the same doublers fore and aft, the same
keyed formers, top and bottom. Wings are made the same way, with Symmet-True
methods to assure easy and accurate assembly.
for Rudder operation, the Jr. Falcon may be flown with kick-up elevator
and plans show where to cut the stab for this addition. Despite modest size,
there is lots of fuselage space for radio gear, both under wing and in the
nose compartment. Designer Goldberg feels Junior is ideal for the "package"
radio units, depicts the Citizen-Ship R/C Pak in one sketch. Another suggested
and illustrated installation is C & S Finch receiver with Septalette
Mark V actuator, for proportional rudder.
Jr. Falcon Specs: Span 37"; chord, 6 3/4"; area,
250 sq. in. Intended for .049 to .074 engines, integral or separate fuel
tanks, beam or radial mount. Weight, 16-oz. Radio area under wing is 6 3/4
x 2 1/2 x 2" wide; 3 x 2 1/4, x 1 1/2" (average) compartment in nose.
AMA Plans Service offers a full-size version of
many of the plans show here at a very reasonable cost. They will scale the plans any size for you.
It is always best to buy printed plans because my scanner
versions often have distortions that can cause parts to fit poorly. Purchasing plans also help to
support the operation of the Academy of Model
Aeronautics - the #1 advocate for model aviation throughout the world. If the AMA no longer has this plan on file, I
will be glad to send you my higher resolution version.
Try my Scale Calculator for Model Airplane Plans.
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