Great Planes ElectriCub Kit - GPMA0156 - Manual (Page 3)

1. Build the plane according to the plan and instructions. Do
not alter or modify the model, as doing so may result in an
unsafe or unflyable model. In a few cases the plan and
instructions may differ slightly from the photos. In those
instances the plan and written instructions are 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 motor and components (batteries,
wheels, etc.) throughout your building process.
4. You must properly install all components so that the model
operates properly on the ground and in the air.
5. You must check the operation of the model before every
flight to ensure that all equipment is operating and that the
model has remained structurally sound. Be sure to check
nylon clevises or other connectors often and replace them if
they show signs of wear or fatigue.
Remember: Take your time and follow directions to end
up with a well-built model that is straight and true.
Please inspect all parts carefully before starting to
build! 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:
[email protected].
If you are calling for replacement parts, please
reference the part numbers and the kit identification
number (stamped on the end of the carton) and have
them ready when calling.
Since the original ElectriCub was introduced in 1987, electric
airplanes have grown in popularity and so has the technology.
Over the years modelers have told us what they would like to
see different on the ElectriCub. We've been listening! The
redesigned ElectriCub now comes with ailerons, clear windows
and is designed for mini servos. We've done extensive testing
of motors, gearboxes and props to find the best combination, at
the lowest price, for the new ElectriCub.
While the ElectriCub is easy to fly, it does not have the total
self-recovery and stability of a basic trainer like the Great
Planes series of PT basic trainers. Therefore, if you have
never flown an R/C airplane before, we strongly recommend
that you seek out the assistance of an experienced R/C pilot
who will be able to check out your construction and help you
with your first flights. We do know that once you have flown
the ElectriCub you will want to keep it in your vehicle for that
quick flight during your lunch break or to relax with a few
flights after work.
Keep It Light
Because the electric motor and motor battery are relatively
heavier than a glow engine, it is essential that the basic
structure of the airplane be kept as light as possible. In
doing so, you will help insure that the finished airplane will
not be too heavy to fly well.
One way to prevent excess weight build-up is to use only as
much glue as needed for a good glue joint. Do not apply
extra “fillets” of glue thinking that it will make your plane
stronger! Extra glue could possibly add ounces to the
weight of your plane and detract from the performance.
We will give you tips throughout this book on how to keep
the structure light and we urge you to follow them.
Radio Selection
Because weight is an important factor in the ElectriCub,
the ideal radio system is one that has a miniature
receiver, three mini servos such as Futaba
® ’s S3101
servos and an electronic speed control with BEC (Battery
Eliminator Circuitry such as the Great Planes Speed 300
GPMM2030). The electronic speed control with BEC
uses the motor battery, not a separate receiver battery, to
power the receiver and servos. When the motor battery
voltage reaches a preset voltage, the BEC on the speed
control stops the motor while still supplying power to the
receiver and servos. This setup can reduce the weight of
the plane by as much as 4 oz. However, the ElectriCub
will fly great with four mini servos, a 270 mAh receiver
battery and a micro switch. This setup is a great,
inexpensive way for the first-time electric pilot to try
electric flight. Once you’re hooked on the clean and quiet
advantages of electric flight, you can replace the micro
switch with a high quality electronic speed control.
DECISIONS YOU MUST MAKE
IF YOU'RE NEW TO ELECTRICS
INTRODUCTION
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.
SAFETY PRECAUTIONS
3