EXTRA 300S
Instruction Manual
2
INTRODUCTION
Thank you for choosing the
EXTRA 300S
ARTF by SEAGULL MODELS. The
EXTRA 300S
was
designed with the intermediate/advanced sport flyer in mind. It is a semi scale airplane which is
easy to fly and quick to assemble. The airframe is conventionally built using balsa, plywood and
veneer to make it stronger than the average ARTF , yet the design allows the aeroplane to be kept
light. You will find that most of the work has been done for you already. The pushrods are pre-made
to the correct lengths, the motor mount has been fitted and the hinges are pre-installed and pinned
for security. Flying the
EXTRA 300S
is simply a joy.
This instruction manual is designed to help you build a great flying aeroplane. Please read this
manual thoroughly before starting assembly of your
EXTRA 300S
. Use the parts listing below to
identify all parts.
WARNING
Please be aware that this aeroplane is not a toy and if assembled or used incorrectly it is
capable of causing injury to people or property. WHEN YOU FLY THIS AEROPLANE YOU
ASSUME ALL RISK & RESPONSIBILITY.
If you are inexperienced with basic R/C flight we strongly recommend you contact your R/C supplier
and join your local R/C Model Flying Club. R/C Model Flying Clubs offer a variety of training
procedures designed to help the new pilot on his way to successful R/C flight. They will also be able
to advise on any insurance and safety regulations that may apply.
ADDITIONAL ITEMS REQUIRED
!
.46-.61 2-stroke engine.
!
Computer radio with five servos.
!
Glow plug to suit engine.
!
Propeller to suit engine.
!
Protective foam rubber for radio
system.
!
Silicone fuel line.
TOOLS & SUPPLIES NEEDED
!
Thick cyanoacrylate glue.
!
30 minute epoxy.
!
5 minute epoxy.
!
Hand or electric drill.
!
Assorted drill bits.
!
Modelling knife.
!
Straight edge ruler.
!
2mm ball driver.
!
Phillips head screwdriver.
!
220 grit sandpaper.
!
90° square or builder’s triangle.
!
Wire cutters.
!
Masking tape & T-pins.
!
Thread-lock.
!
Paper towels.
PARTS LISTING
FUSELAGE ASSEMBLY
!
(1) Fuselage.
WING ASSEMBLY
!
(1) Right wing half with pre-installed
aileron.
!
(1) Left wing half with pre-installed
aileron.
!
(1) Plywood wing dihedral brace.
!
(1) Covering strip for centre section
joint.
Tail section assembly
!
(1) Vertical stabilizer with pre-
installed rudder.
!
(1) Horizontal stabilizer with pre-
installed elevator halves.
Some more parts.
HARDWARE PACK
COWLING.
Landing gear.....
