MS: 83 ASSEMBLY MANUAL “Graphics and specfications may change without notice”. Specifications Wingspan---------------------------------------- 78.7 in---------------------------- 200cm. Wing area-------------------------------------- 1032.8 sq.in---------------- 66.6 sq.dm. Approximate flying weight-------------------10.6 lbs-----------------------------4.8kg. Length-------------------------------------------- 52.9in--------------------------- 134.4cm. Recommended engine size---------------- .1.20 cu.
Instruction Manual DECATHLON _ CODE SEA 83. INTRODUCTION. Thank you for choosing the DECATHLON ARTF by SEAGULL MODELS. The DECATHLON was designed with the intermediate/advanced sport scale 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 NOTE: To avoid scratching your new aeroplane we suggest that you cover your workbench with an old towel. Keep a couple of jars or bowls handy to hold the small parts after you open the bags. Please trial fit all parts. Make sure you have the correct parts and that they fit and are aligned properly before gluing! This will ensure proper assembly as the DECATHLON is made from natural materials and minor adjustments may have to be made.
DECATHLON _ CODE SEA 83. 5) Turn the wing panel over and deflect the aileron in the opposite direction from the opposite side. Apply thin C/A glue to each hinge, making sure that the C/A penetrates into both the aileron and wing panel. Instruction Manual Installing the turnbuckle for the wing as same as pictures below. washer. Turnbuckle. 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.
www.seagullmodels.com Wing. Aileron. Hinge. ELEVATOR CONTROL HORN. AILERON CONTROL HORN Aileron control horn: See pictures below. Install the elevator control horn using the same method as with the aileron control horns. 2 sets. 2 sets. 3x35mm. 3x40mm. CONTRONL HORN M3 CONTRONL HORN M3 SCREW. Aluminum Washer. Epoxy. Epoxy. ALUMINUM WASHER. Wing M3 LOCK NUT. Horizontal Stabilizer. M3 LOCK NUT. Aluminum Washer. ALUMINUM WASHER. Epoxy. Horizontal Stabilizer. 16mm. Wing 16mm . Epoxy.
Instruction Manual DECATHLON _ CODE SEA 83. Elevator control horn. Rudder control horn. RUDDER CONTROL HORN. Rudder control horn: Using the same tectniques used aileron control horn. See picture below. 2 sets. ENGINE MOUNT INSTALLATION. See pictures below.Make yourself the template of your engine on paper. 3x35mm. 4x30mm. CONTRONL HORN M3 SCREW. Mark and drill 4 holes for engine mount. Insert 4 blind nuts to firewall. ALUMINUM WASHER. EPOXY. FUSELAGE. Rudder. ALUMINUM WASHER. M3 LOCK NUT.
www.seagullmodels.com INSTALLING THE STOPPER ASSEMBLY. 1) Using a modeling knife, carefully cut off the rear portion of one of the 3 nylon tubes leaving 1/2” protruding from the rear of the stopper. This will be the fuel pick up tube. 2) Using a modeling knife, cut one length of silicon fuel line. Connect one end of the line to the weighted fuel pick up and the other end to the nylon pick up tube.(The silicon tube is not included). 3) Carefully bend the second nylon tube up at a 45º angle.
Instruction Manual DECATHLON _ CODE SEA 83. Vent tube. Lite-Plywood block. Washer. Fuel fill tube. wheel collar. Axle. M3. wheel. wheel. wheel collar. Washer. Fuel pick-up tube. nut. Blow through one of the lines to ensure the fuel lines have not become kinked inside the fuel tank compartment. Air should flow through easily. Axle. M3. M3. wheel Pant. Lite-Plywood block. WHEEL AND WHEEL PANTS INSTALLATION. 1) Assemble and mounting the wheel pants as shown in the following pictures. Landing Gear.
www.seagullmodels.com 3) A drop of C/A glue on the wheel collar screws will help keep them from coming lose during operation. Repeat the process for the other wheel. INSTALLING THE MAIN LANDING GEAR. M6 x 20mm. 1) The blind nuts for securing the landing gear are already mounted inside the fuselage. 2) Using the hardware provided, mount the main landing gear to the fuselage. Plastic part. Alumium Spar. M4 x 10mm. M4 x 10mm. Alumium Spar. Fuselage. Alumium Spar. C/A glue.
Instruction Manual DECATHLON _ CODE SEA 83. MOUNTING THE ENGINE. Pushrod wire. 1) Place your engine onto the engine mount. Adjust the engine is centered of the edges of the engine case. 2) When you are satisfied with the alignment, mark the locations of the engine mounting. 3) Remove the engine. Using an drill bit, drill the mounting holes through the engine mount at the four locations marked. Machine Screw 4x30mm. Pushrod wire. 155mm . COWLING INSTALLATION. 4.2 mm diameter. Trim and cut.
www.seagullmodels.com Trim and cut. Trim and cut. 1.5mm were (needle valve). Machine Screw 3x10mm. INSTALLING THE SWITCH. Install the switch into the precut hole in the side of fuselage. Switch.
Instruction Manual DECATHLON _ CODE SEA 83. INSTALLING THE FUSELAGE SERVO. INSTALLING THE HORIZONTAL STABILIZER. Because the size of servos differ, you may need to adjust the size of the precut opening in the mount. The notch in the sides of the mount allow the servo lead to pass through. 1) Install the rubber grommets and brass collets onto the throttle servo. Test fit the servo into the aileron servo mount. Draw center line. 2) Secure the servos with the screws provided with your radio system.
www.seagullmodels.com Epoxy. INSTALLING THE VERTICAL STABILIZER. Put the vertical stabilizer into the in the top of the horizontal fin. The bottom edge of the stabilizer should also be firmly pushed against the top of the horizontal stabilizer. Hinge slot. Horizontal Stabilizer. 90º Vertical Stabilizer. Hinge slot. Epoxy. Remove covering. Epoxy. Hinge. C/A glue. When cutting through the covering to remove it, cut with only enough pressure to only cut through the covering itself.
Instruction Manual DECATHLON _ CODE SEA 83. Small weight. String. Aileron servo. Electric wire. INSTALLING THE AILERON SERVOS. Servos. Small weight. Thread. Wing rib. Wing. String. Small Weight. Small Weight. String. Attach the string to the servo lead and carefully thread it though the wing. Wing. Aileron. INSTALLATION THE PUSHROD. 75mm. M2 clevis. M2 lock nut. 110mm.
www.seagullmodels.com Aileron. Aileron. ELEVATOR - RUDDER PUSHROD INSTALLATION. Wing. Rudder control horn. M2 lock nut. Aileron. Elevator control horn. Repeat the procedure for the other wing. Elevator and rudder pushrods assembly follow pictures below. M2 clevis. Attach to servo arm in fuselage. M2 Lock nut. Attach to elevator - rudder control horn.
Instruction Manual DECATHLON _ CODE SEA 83. Throttle. Elevator. Rudder. Elevator. Control horn. Elevator Pushrod. M2 lock nut. Rudder. Elevator. Throttle. Metal clevis. INSTALLING TAIL STRUT SUPPORT The tail strut system assembly follow pictures below. Elevator pushrod. 2 Rudder pushrod.
www.seagullmodels.com 1 Vertical Fin. Horizontal Fin. 2 2 1 Vertical Fin. Horizontal Fin. 2 2 Horizontal Fin. 1 2 2 2 Vertical Fin. Fuselage bottom. 1 90mm.
Instruction Manual DECATHLON _ CODE SEA 83. 4 90mm. 3 4 3 M3 x 10mm. 4 M3 x10 mm.
www.seagullmodels.com MOUNTING THE TAIL WHEEL. Spring. See picture below. Tail landing gear. INSTALLING THE BATTERY-RECEIVER. 1) Plug the six servo leads and the switch lead into the receiver. Plug the battery pack lead into the switch also. 3x25mm. 3 x10 mm. 3x25 mm. 2) Wrap the receiver and battery pack in the protective foam rubber to protect them from vibration. 3) Route the antenna in the antenna tube inside the fuselage and secure it to the bottom of fuselage using a plastic tape. Receiver.
Instruction Manual DECATHLON _ CODE SEA 83. 3x50mm. Aluminum tube. Wing tube. 5mm diameter pilot horn. C/A glue. Insert two wing panels as pictures below. M4x60mm. Wing bolt. M4x60mm. INSTALLING THE WING STRUT. Parts requirement.See pictures below. Plastic Screw. 20 M4x15mm.
www.seagullmodels.com Turnbuckle. 60mm. 85mm. 1 2 3 M4x15mm.
Instruction Manual DECATHLON _ CODE SEA 83. To correct this, move the battery and receiver forward orif this is not possible, stick weight onto the firewall.When balanced correctly, the airplane should sit level or slightly nose down when you lift it up with your fingers. 3 10cm. CONTROL THROWS. 1) We highly recommend setting up the DECATHLON using the control throws listed at right. We have listed control throws for both Low Rate (initial test flying/sport flying) and High Rate (aerobatic flying).
www.seagullmodels.com AEROBATIC FLYING PREFLIGHT CHECK. 1) Completely charge your transmitter and receiver batteries before your first day of flying. 2) Check every bolt and every glue joint in the DECATHLON to ensure that everything is tight and well bonded. 3) Double check the balance of the airplane. Do this with the fuel tank empty. 4) Check the control surfaces. All should move in the correct direction and not bind in any way.
