Academy of Model Aeronautics
5151 East Memorial Drive
Muncie, IN 47302-9252
Tele. (800) 435-9262
Fax (765) 741-0057
Or via the Internet at:
http://www.modelaircraft.org
The Great Planes Ryan STA is an excellent sport-scale
model. Its size makes it eligible to fly in IMAA events. The
IMAA (International Miniature Aircraft Association) is an
organization that promotes non-competitive flying of giant
scale models. You can contact the IMAA at the address or
telephone number below.
IMAA
205 S. Hilldale Road
Salina, KS 67401
(913) 823-5569
If you plan to attend an IMAA event, refer to the
IMAA Safety
Code
and
recommendations
in the back of this manual.
1. You must assemble the model according to the instructions.
Do not alter or modify the model, as doing so may result in an
unsafe or unflyable model. In a few cases the instructions may
differ slightly from the photos. In those instances the written
instructions should be considered as correct.
2. Take time to build straight, true and strong.
3. Use an R/C radio system that is in first-class condition and
a correctly sized engine and components (fuel tank, wheels,
etc.) throughout your building process.
4. You must properly install the R/C radio system 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 every flight
to insure that all equipment is operating and you must make
certain that the model has remained structurally sound. Be
sure to check clevises or other connectors often and replace
them if they show signs of wear or fatigue.
Remember: Take your time and follow the instructions to
end up with a well-built model that is straight and true.
Before starting to build, compare the parts in this kit with
the Parts List and note any missing parts. Also inspect
all parts to make sure they are of acceptable quality. If
any parts are missing, broken or defective, or if you have
any questions about building or flying this airplane,
please call us at (217) 398-8970, or e-mail us at
productsupport@greatplanes.com. If you are contacting
us for replacement parts, please be sure to provide the
full kit name (Great Planes Ryan ARF) and the part
numbers as listed in the Parts List.
You can also check our web site at www.greatplanes.com
for the latest Ryan ARF updates.
Because the Ryan uses dual elevator servos and because
the servos must move in opposite directions (due to the way
they are mounted in the fuse), they cannot be connected
with a “Y” connector (unless you have a “reverse” servo).
Therefore, to fly the Ryan a radio system capable of
electronic servo mixing is required, so that one of the
elevator servos can be reversed. If you do not have a radio
with programmable mixing, there is another solution. MPI
(Maxx Products, (847) 438-2233), located in Lake Zurich,
Illinois, offers an electronic servo mixing device called the
Miracle Y
. When the elevator servos are connected to the
Miracle Y they will operate in opposite directions.
A receiver battery with a capacity of at least 1000 mAh is
also recommended for a model of this size.
There are several engines that will work well in your Ryan
STA ARF. The official engine size recommendation range is
.91 to 1.20 two-stroke or four-stroke. If you select an engine
in the upper end of the size range, remember that the Ryan
is a scale model that is intended be flown in a scale manner
at scale speeds, so prudent throttle management must be
practiced. Our prototype, powered by an O.S.
®
MAX .91 FS,
flew smoothly and most scale-like at about 3/4 throttle. We
also found that a 14 x 8 prop was perfect for this engine and
model combination. Other engine sizes may require
different size props, so start with the manufacturer’s
recommendations that came with the engine.
ENGINE SELECTION
RADIO SYSTEM REQUIREMENTS
Note:
We, as the kit manufacturer, provide you with a top
quality kit and great instructions, but ultimately the quality
of your finished model depends on how you build it;
therefore, we cannot in any way guarantee the
performance of your completed model and no
representations are expressed or implied as to the
performance or safety of your completed model.
PRECAUTIONS
IMAA INFORMATION
3
