Decisions You Must Make; Radio Equipment; Engine Recommendations; Landing Gear Configurations - GREAT PLANES Ultra Sport 40 Plus Instruction Manual

6. You must check the operation of the model before every
flight to insure that all equipment is operating and that the
model has remained structurally sound. Be sure to check
clevises or other connectors often and replace them if they
show any signs of wear or fatigue.
7. If you are not already an experienced R/C pilot, you
should fly the model only with the help of a competent,
experienced R/C pilot.
8. While this kit has been flight tested to exceed normal use,
if the plane will be used for extremely high stress flying,
such as racing, the modeler is responsible for taking steps
to reinforce the high stress points.
We, as the kit manufacturer, provide you with a top quality
kit and instructions, but ultimately the quality and flyability
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.
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 Ultra Sport 40 Plus) and the
part numbers as listed in the Parts List.
You can also check our web site at www.greatplanes.com
for the latest Great Planes Ultra Sport 40 Plus updates.
If you have not flown this type of model before, we
recommend that you get the assistance of an experienced
pilot in your R/C club for your first flights. If you're not a
member of a club, your local hobby shop has information
about clubs in your area whose membership includes
experienced pilots.
In addition to joining an R/C club, we strongly recommend
you join the AMA (Academy of Model Aeronautics). AMA
membership is required to fly at AMA sanctioned clubs.
There are over 2,500 AMA chartered clubs across the
country. Among other benefits, the AMA provides insurance
to its members who fly at sanctioned sites and events.
Additionally, training programs and instructors are available
at AMA club sites to help you get started the right way.
Contact the AMA at the address or toll-free phone number
below:

DECISIONS YOU MUST MAKE

Radio Equipment

The Great Planes Ultra Sport 40 Plus can use either a 4
channel radio with 5 servos (and Y harness for the ailerons)
or a computer radio. While the 4 channel non-computer
radio will provide more than enough performance to fly the
airplane, a computer radio will help the pilot to extract all
possible performance out of the airplane, and that is why it
is recommended. Five standard servos are all that is
necessary to fly the Great Planes Ultra Sport 40 Plus.

Engine Recommendations

The recommended engine size range for the Great Planes
Ultra Sport 40 Plus is a .40 to .52 cu in [6.5 – 8.5cc] two-
stroke, or .52 to .70 cu in [8.5 – 11.5cc] four-stroke. If an
engine in the upper end of the size range is used, throttle
management must be practiced. While all engines in the
recommended range provide good performance, a 2-stroke
engine is more suitable for high speed flying and a 4-stroke
engine is better for constant speed aerobatics. Make sure
you pick an engine adequate to your flying style.

Landing Gear Configurations

The Ultra Sport 40 Plus has been designed around three
different landing gear configurations. Your must choose
which one you want to use before you begin construction of
the kit. These are the three options:
Fixed Tricycle: Probably the configuration that makes
ground handling easier. It is also the least aerodynamic.
Fixed Mains and Tail Wheel: This is the simplest and
lightest possible landing gear configuration. It is also more
aerodynamic than the Fixed Tricycle. Ground handling is not
as easy as with the Fixed Tricycle, especially on take off
3
Academy of Model Aeronautics
5151 East Memorial Drive
Muncie, IN 47302
Tele: (800) 435-9262
Fax (765) 741-0057
Or via the Internet at:
http://www.modelaircraft.org