ASSEMBLY MANUAL Specifications Wing Span ------------------------------- 43 in --------------------- 109cm. Wing Area ------------------------------- 367 sq in ---------- 23.7 sq dm. Weight ------------------------------------ 20-21 oz ------------ 566-595 g. Length ------------------------------------ 38.4 in ------------------- 97.5cm. Radio ------------------------------- 4 channel with 4 sub-micro servos. Motor size ---------------------------- Park 450 to Park 480 Outrunner.
EXTRA 300. Instruction Manual. INTRODUCTION. Thank you for choosing the EP EXTRA 300 ARTF by SEAGULL EP. The EP EXTRA 300 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 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.
www.seagullmodels.com 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. ! (1) Canopy hatch.
EXTRA 300. Instruction Manual. HINGING THE AILERONS. Note: The control surfaces, including the ailerons, elevators, and rudder, are prehinged with hinges installed, but the hinges are not glued in place. It is imperative that you properly adhere the hinges in place per the steps that follow using a high-quality thin C/A glue. T-pin. ! 1) Carefully remove the aileron from one of the wing panels. Note the position of the hinges. T-pin.
www.seagullmodels.com C/A glue. HINGING THE RUDDER. Glue the rudder hinges in place using the same tectniques used to hinge the ailerons. ! 6) Using C/A remover/debonder and a paper towel, remove any excess C/A glue that may have accumulated on the wing or in the aileron hinge area. ! 7) Repeat this process with the other wing panel, securely hinging the aileron in place.
EXTRA 300. Instruction Manual. C/A glue. A drop of C/A glue on the wheel collar screws will help keep them from coming lose during operation. C/A glue. Repeat the process for the other wheel. INSTALLING THE MAIN LANDING GEAR. !1) Using the hardware provided, mount the main landing gear to the fuselage. 3 X 12mm. C/A glue. INSTALLING ELECTRIC MOTOR.
www.seagullmodels.com Blind nut. Front view. COWLING INSTALLATION. ! 1) Slide the fiberglass cowl over the engine and line up the back edge of the cowl with the marks you made on the fuselage then trim and cut. 3x10mm. C/A glue. Motor. Rotor shaft. Trim and cut.
EXTRA 300. Instruction Manual. ! 2) While keeping the back edge of the cowl flush with the marks, align the front of the cowl with the crankshaft of the motor. The front of the cowl should be positioned so the crankshaft is in nearly the middle of the cowl opening. Use the spinner backplate as a guide. Hold the cowl firmly in place using pieces of masking tape. ! 3) Slide the cowl back over the motor. AILERON SERVOS - LINKAGES. Small weight. 3x10mm. Servo(2pcs). Thread.
www.seagullmodels.com Using a small weight (Weighted fuel pick-up works well) and thread, feed the string through !4) Using a ruler & pen to draw a straight line as pictures below the wing as indicated. Pen. Attach the string to the servo lead and carefully thread it though the wing. Once you have thread the lead throught the wing, remove the string so it can use for the other servo lead. Tape the servo lead to the wing to prevent it from falling back into the wing. Straigh line.
EXTRA 300. Instruction Manual. Left side. Rudder servo. Repeat the procedure for rudder servo. INSTALLING THE SWITCH. Repeat the procedure for orther wing haft. Install the switch into the precut hole in the side, in the fuselage. FUSELAGE SERVO INSTALLATION. ! 1) Locate and cut out the covering film from the servo holes in both sides of fuselage. Right side. Remove covering. ! 2) Install the rubber grommets and brass collets onto the elevator servo. Test fit the servo into the elevator servo mount.
www.seagullmodels.com ! 2) Using a modeling knife, carefully remove the covering at mounting slot of horizontal stabilizer ( both side of fuselage). ! 3) Slide the stabilizer into place in the precut slot in the rear of the fuselage. The stabilizer should be pushed firmly against the front of the slot. ! 4) With the stabilizer held firmly in place, use a pen and draw lines onto the stabilizer where it and the fuselage sides meet.
EXTRA 300. Instruction Manual. ! 2) Slide the vertical stabilizer into the slot in the top of the fuselage. The rear edge of the stabilizer should be flush with the rear edge of the fuselage and the lower rudder hinge should engage the precut hinge slot in the lower fuselage. The bottom edge of the stabilizer should also be firmly pushed against the top of the horizontal stabilizer. Remove covering.
www.seagullmodels.com CONTROL HORN INSTALLATION. Control horn install as same as method of aileron wing. See pictures below. 2x12mm. Elevator servo. Rudder control horn. Rudder servo. MOUNTING THE TAIL WHEEL BRACKET. See pictures below: Elevator control horn. PUSHROD INSTALLATION. Pushrod install as same as method of pushrod wing. See pictures below. Pushrod.
EXTRA 300. Instruction Manual. Tie wrap. Expoy glue. Receiver. INSTALLING THE BATTERY-RECEIVER. ATTACHMENT WING-FUSELAGE. See pictures below. Attach the aluminium tube into fuselage. Battery tray M2x8mm. Tie wrap or rubber band. Battery.
www.seagullmodels.com Wing bolt. sides under the horizontal stabilizer. If the tail of the plane falls, the plane is tail heavy. To correct this, move the battery and receiver forward orif this is not possible, stick weight onto the firewall or use a brass heavy hub spinner hub, similar to those offered by Harry Higley. When balanced correctly, the airplane should sit level or slightly nose down when you lift it up with your fingers. CONTROL THROWS. Wing bolt.
EXTRA 300. Instruction Manual. ! A) Check the operation and direction of the elevator, rudder, ailerons and throttle. !5) If your radio transmitter is equipped with dual rate switches double check that they are on the low rate setting for your first few flights. ! B) Plug in your radio system per the manufacturer's instructions and turn everything on. !6) Check to ensure the control surfaces are moving the proper amount for both low and high rate settings. FLIGHT PREPARATION.
