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.....
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