The Indianapolis times. [volume] (Indianapolis [Ind.]) 1922-1965, 1935-11-16

JUNIOR AVIATORS, the winter
~ contest season, with it's slow
flying, mosquito-like models, is
just ahead
What kind of planes are you going
to build?
Indoor models are far more deli
cate and much harder to design
than outd' 0r ships. And to satisfy a
nationwide demand for indoor con-
test ships Scrippo-HoWard model
engineers have taken some of the
winners in the past indoor contests
and combined their best qualities to
build the ship described today.
Of course, as most championship
models are, the plane is covered
with micrfilm. But if the beginner
is unfamiliar with microflim super
fine tissue my be used.
However, be extremely careful in
the construction or this model.
Sand the balsa parts smooth and
make them as light as possible. Use
care in cementing the various pices
together, because cement adds weight.
And remember this is very delicate
model and will not stand a great
deal Of abuse. 1t must be flown in
doors.
Study the plans thoroughly be-
fore you start to build. The small
squares and circles over the di-
mension figures refer to the shape
Of the wood. AS an example, the
wing at the tip is 1872 round and
the ribs are 1-32 square.
MATERIALS
One piece of sheet balsa 1-64x2x18
inches for motor stick and wheels.
Three pieces of balsa wood, 3-64
square Is inches for wing frame
landing gear, toll boom.
Three pieces Of balsa wood, 1872
square 18 inches, tall unit, wing
ribs.
One balsa wood block, q square x
7 inches, for propeller.
One piece of balsa wood, q 4 x
II inches, motor stick former.
One piece of music wire, No. OILS.
Three feet of 3-64-inch suare rub
Der for motor.
One bottle of cement.
One bottle Of tissue cement.
One sheet of superfine tissue if
microfllm is not used as a COW
ering.
MOTOR STICK
Sand sheet of 1-64 inch balsa
smooth and cut out motor stick
blank. A former cut from solid
balSa, 1sX15X12 inches is now made
as illustrated in cross-section view.
The former resembles the finished
motor stick Soak the motor stick
blank in warm water and bend it
carefully around the former. Wrap
with strips of cotton gauze and place
in medium hot oven until thor
oughly dry. BE careful when wrap
ping not to throw the seam out of
line. Remove the former and ce-
ment seam. Cut nose of stick at
angle as shown and plug with tip of
former plug tail. Bend the thrust
bearing and rear rubber hook from
No. DIG music wire. Place thrust
bearing in position.
TAIL UNIT
On an ordinary drawing board,
draw the Stabilizer and rudder de-
sign to exact size and around out
line space a double row of pins or
bradS. Cut two pieces of 1872 inch
square balsa for each half of the
Stabilizer and one piece for the rud-
der frames. Cut tail boom, which
is 1854 square inches at tail joint
and taper down to 1872 inch square
round to the aXles. The wheels are
cut from 1-64 inch sheet balsa. The
aXles are bent from No. .016 music
wire.
PROPELLER
The propeller is cut from q
50. finch block. Cut the blank
as illustrated and carve blades as
shown in template The shaft is
bent from No. .016 music wire.
WING
Bend the wing frame, using the
same method as used in shaping
the tail frames. 1t is made in two
sections with a double center rib.