Introduction – Great Planes Giant Extra 330L Kit - GPMA0250 User Manual
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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:
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.
Congratulations and thank you for purchasing the Great
Planes 1/3 scale giant Extra 330L. We’d like to provide you
a bit of history on our selection of this aircraft as the newest
release in the Great Planes sport scale aerobatic line.
The first of the Extra legacy – the 230 — stormed onto the
aerobatic scene in 1984, and its descendants continue to
rock the aerobatic world. The Extra 260, a hand built one-of-
a-kind prototype, carried Patty Wagstaff to the status of the
only woman to hold the US National Aerobatic Champion
title, and stands proudly in the Smithsonian. The Extra 300
series burst onto the scene shortly thereafter, first with the
300 – a shoulder wing two seat superstar – followed by the
300S and L – low wing single and two seat models,
respectively, with even more performance.
Now Extra threatens to scream to the top of the aerobatic ladder
yet again by challenging the current reigning star, the CAP 232,
with the 330L and 330XS; modified 300S and L aircraft, powered
by Lycoming 330hp engines and larger tail surfaces.
At the time of this writing the 330L and 330XS are still in
the prototyping stages, but Extra Germany has recently
announced a 330LX which appears to be nearly
identical to the 330L prototype from which this aircraft
was modeled. Until production aircraft are flying,
exactly which model will actually challenge the CAP is
yet to be seen.
However, regardless of which model does get produced,
the prototype 330L in Europe (the one modeled here) and
various other retrofitted 300S and L aircraft are already
stirring up the aerobatic and air show arenas. This excitement
and impressive performance led us to choose this aircraft for
our first Giant Scale Competitive Aerobatic Model.
The Extra has a mixed composite/aluminum/cloth covered
skin with well defined lines. Coincidentally, this makes the
Great Planes Extra 330L relatively easy to build and cover.
We have made every effort to maintain this mixed-skin
appearance and the scale shapes.
Flying the Extra 330L is a thrilling experience–as it should
be for such an aerobatic model! It doesn’t take much
elevator or aileron throw to put the Extra through its paces.
When you have a feel for your Extra 330L, the throws can be
increased to high rates (noted on the plans and in the
instructions) to really showcase the model's aerobatic
potential. The Extra performs surprisingly well on a 50-60 cc
single cylinder gas engine or 70cc gas twin cylinder engines
such as the MacMinarelli 70 twin, but seasoned experts will
want to get the most out of the Extra by strapping on
extremely powerful engines such as a 70cc gasoline single
or the MacMinarelli 85 twin.
We hope you enjoy building and flying your Great Planes
Extra 330L as much as we did the prototypes.
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.
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