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Great Planes Extra 300S 60 Kit - GPMA0236 User Manual

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Safety Precautions...................................................................................2
Introduction ..............................................................................................2
Precautions ..............................................................................................3
Decisions You Must Make .......................................................................3

Engine Selection................................................................................3
Exhaust System.................................................................................3

Preparations .............................................................................................3

Required Accessories........................................................................3
Building Supplies and Tools...............................................................4
Optional Tools or Accessories ...........................................................4
Types of Wood...................................................................................4
Common Abbreviations .....................................................................4
Building Notes....................................................................................5
Get Ready to Build.............................................................................5
Inch/Metric Ruler & Conversions .......................................................5
Die-Cut Patterns..........................................................................6 & 7

Build the Tail Surfaces ............................................................................8

Make the Stab Leading Edge Doubler...............................................8
Make the Stab & Fin Sheeting ...........................................................8
Build the Stab ....................................................................................9
Elevator Building Sequence.............................................................10
Fin Building Sequence.....................................................................10
Rudder Building Sequence ..............................................................11
Hinge the Tail Surfaces ....................................................................11
Finish the Tail Surfaces....................................................................11

Build the Wing........................................................................................12

Build the Wing Spars .......................................................................12
Build the Wing Panels......................................................................12
Sheet the Center Section.................................................................14
Servo Mount ....................................................................................14
Join the Wing Panels .......................................................................16
Sheet the Top of the Wing ...............................................................18
Build the Ailerons.............................................................................20

Build the Fuselage .................................................................................22

Assemble the Fuselage Formers & Sides .......................................22
Assemble the Fuselage ...................................................................23
Mount the Wing to the Fuselage......................................................24
Finish the Bottom of the Fuselage ...................................................27
Build the Front Fuselage Deck ........................................................29
Mount the Stabilizer to the Fuselage ...............................................30
Mount the Fin...................................................................................31
Build the Turtle Deck........................................................................31
Mount the Engine & Tank Tray.........................................................32
Install the Servos & Make the Pushrods..........................................33
Assemble the Wheel Pants..............................................................36
Assemble the Cowl ..........................................................................38

Balance the Model Laterally..................................................................39
Prepare the Model for Covering ...........................................................39
Cover the Model with MonoKote Film..................................................40

Covering Technique .........................................................................40
Suggested Covering Sequence .......................................................40

Painting...................................................................................................40
Final Hookups & Checks.......................................................................41

Join the Control Surfaces ................................................................41
Install the Hardware.........................................................................41
Attach the Canopy ...........................................................................42
Set the Control Throws ....................................................................42

Balance Your Model...............................................................................43
Preflight ..................................................................................................43

Charge the Batteries........................................................................43
Balance the Propeller ......................................................................44
Find a Safe Place to Fly ..................................................................44
Ground Check the Model.................................................................44
Range Check Your Radio ................................................................44
Engine Safety Precautions ..............................................................44

AMA Safety Code (excerpt)...................................................................45

General ............................................................................................45
Radio Control...................................................................................45

Flying ......................................................................................................45

Takeoff .............................................................................................45
Flying ...............................................................................................46
Landing ............................................................................................46

2-View Drawing ......................................................................................47
Flight Log................................................................................................48
Fuse & Wing Plans w/Parts List .......................Center Pull-Out Section

Your Extra 300S is not a toy, but a sophisticated, working
model that functions very much like a full-size airplane.
Because of its realistic performance, the Extra, if not
assembled and operated correctly, could possibly cause
injury to yourself or spectators and damage property.

If this is your first sport model, we recommend that you
get help from an experienced, knowledgeable modeler
with your first flights.
You’ll learn faster and avoid risking
your model before you’re ready to take the controls for
yourself.

You may also contact the national Academy of Model
Aeronautics (AMA), which has more than 2,500 chartered
clubs across the country. Contact AMA at the address or
toll-free phone number below:

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

Congratulations and thank you for purchasing the Great
Planes Extra 300S. We’ve selected the “S” because we feel
it looks the best and it is truly meant to perform aerobatics.
Among a few versions of the Extra 300 out there, another
popular one is the “L” which accommodates two
passengers–one student and one flight instructor.

The Extra is a rather “square shaped” airplane with well
defined lines. Coincidentally, this makes it exceptionally
easy to build and cover–especially for a semi-scale sport
model. Framing the model is very straightforward as most
of the structure features interlocking balsa and lite-ply. The
turtle deck sheeting may look a little intimidating but in
actuality it is quite easy to apply if you follow the
instructions and use the template provided to cut the
sheeting.

Flying the Extra 300S 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 300S, the throws can
be increased to high rates (illustrated in the instructions) to
really showcase the aerobatic potential. The Extra performs
surprisingly well on a ball bearinged, Schnuerle ported .61,

INTRODUCTION

PROTECT YOUR MODEL,YOURSELF

& OTHERS...FOLLOW THIS

IMPORTANT SAFETY PRECAUTION

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