already learned the basics of R/C flying and you are
able to safely handle an "aileron trainer" airplane
such as the Great Planes Trainer Series or Big Stik
Series airplanes, the Super Sportster 90/120 is an
excellent choice
We think you will agree that the Great Planes
Super Sportster 90/120 is the highest quality, best
building and best flying airplane of its type on the
market today!
If you have any questions or problems about
building or flying this airplane, or if any of the kit
parts are badly warped, defective or missing, please
call us at (217) 367-2069 between 8 00 AM and 4 00
PM (central time) and we'll be glad to help If your
call concerns defective or missing parts, please be
ready to give us the 8-digit code (on the box end flap)
and the part numbers
PRECAUTIONS
1 You must build the plane according to the
plans and instructions Do not alter or modify the
model as represented by the plans, as doing so may
result in an unsafe or unflyable model In a few cases
the plans and instructions may differ slightly from
the photos In those instances you should assume the
plans and written instructions are correct
2. You must take time to build straight, true
and strong
3. You must use a proper R/C radio that is in
first class condition, the correct sized engine and
correct components (fuel tank, wheels, etc.)
throughout your building process
4 You must properly install all R/C and other
components so that the model operates properly on
the ground and in the air.
5 You must test the operation of the model
before the first and each successive flight to insure
that all equipment is operating and you must make
certain that the model has remained structurally
sound Be sure to check the nylon clevises often, and
replace if they show signs of wear.
6. You must fly the model only with the com-
petent help of a well experienced R/C pilot if you
are not already an experienced and knowledgeable
R/C pilot at this time.
Note. We, as the kit manufacturer, can provide
you with a top quality kit and great instructions,
but ultimately the quality and flyability of your
finished model depends on how you build it, there-
fore, we cannot in any way guarantee the perform-
ance of your completed model, and no representations
are expressed or implied as to the performance or
safety of your completed model
Remember: Take your time and follow di-
rections to end up with a well-built model that
is straight and true
*********!]<S|!*#*****;i!il!***S|!*S|S***!tl*#****S|S!|!!|!**!|!*
DECISIONS YOU MUST MAKE
NOW
ENGINE AND MOUNT SELECTION:
The recommended engine size range is as fol-
lows:
.61 - .91 cubic inch displacement 2-cycle
.90 - 1.20 cubic inch displacement 4-cycle
Do not power your airplane with an engine
larger than the recommended size ( 91 2-Cycle, 1 20
4-Cycle) Also, if using a 91 2-Cycle, do not use a
tuned pipe
When you start building the fuselage, one of
the first steps will be to cut off a portion of the front
of the fuselage sides and fuselage doublers if you will
be using a 4-cycle engine, due to the increased length
and weight of the 4-cycle engines Therefore, it is
important that you have your engine close at hand
while building.
This kit includes hardwood engine mounting
rails, but you may wish to purchase a custom engine
mount for your engine, and the instructions allow
for that type of installation.
LANDING GEAR CONFIGURATION
The Super Sportster 90/120 may be built with
a "taildragger" or "tricycle" landing gear configura-
tion Some people prefer the tricycle gear setup be-
cause they believe it handles better on the ground
Others prefer to build it as a taildragger for the
classic appearance This airplane actually handles
very well in either configuration, so the choice is up
to you Please make this decision now, as it will
affect several things you will do during the construc-
tion.
CHOOSING YOUR RADIO AND SERVOS
Most good quality radio systems on the market
today are suitable for this airplane You may, how-
ever, have to purchase a 5th servo or a high-torque
servo (see the note below).
IMPORTANT NOTE We have found standard ser-
vos which provide approximately 45 oz/in of torque
to be satisfactory for use in the Sportster 90/120 with
the following exception If you are using stan-
dard servos you should use one servo for each
elevator (use a "Y"- Connector to plug both elevator
servos into the elevator channel of your receiver) If
you want to use only one servo for the elevators, you
must use two pushrods and a high torque servo pro-
viding at least 60 oz/in of torque.
Please make sure you select a radio system
that is on a frequency designated "for aircraft use
only", and one that meets current FCC standards.
