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Factory Decathlon SEA 83 Assembly Manual

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"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.in--------------------- 4-stroke.
Radio System required 4 channels with 6 servos
Flying skill level Intermediate/advanced.
Kit features.
•
Ready-made—minimal assembly & finishing required.
•
Ready-covered covering.
•
Photo-illustrated step-by-step Assembly Manual.
Made in Vietnam.
ASSEMBLY MANUAL
MS: 83

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  • Page 1: Specifications

    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.in--------------------- 4-stroke. Radio System required 4 channels with 6 servos Flying skill level Intermediate/advanced.
  • Page 2 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.

  • Page 3: Hinging The Ailerons

    www.seagullmodels.com NOTE: To avoid scratching your new aero- plane we suggest that you cover your work- bench with an old towel. Keep a couple of jars or bowls handy to hold the small parts after you T- pin. open the bags. Please trial fit all parts.

  • Page 4: Hinging The Elevator

    Instruction Manual DECATHLON _ CODE SEA 83 Installing the turnbuckle for the wing as 5) Turn the wing panel over and deflect the same as pictures below. 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 washer.
  • Page 5 www.seagullmodels.com Wing. Aileron. Hinge. ELEVATOR CONTROL HORN. Install the elevator control horn using the AILERON CONTROL HORN same method as with the aileron control horns. Aileron control horn: See pictures below 2 sets. 2 sets. 3x35mm. 3x40mm. CONTRONL HORN M3 CONTRONL HORN M3 SCREW Aluminum Washer.

  • Page 6: Rudder Control Horn

    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. ENGINE MOUNT INSTALLATION. See pictures below.Make yourself the 2 sets. template of your engine on paper.

  • Page 7: Fuel Tank Installation

    www.seagullmodels.com Carefully use a lighter or heat gun to INSTALLING THE STOPPER ASSEMBLY. permenently set the angle of the vent tube. 1) Using a modeling knife, carefully cut Important: When the stopper assembly is in- off the rear portion of one of the 3 nylon tubes stalled in the tank, the top of the vent tube leaving 1/2”...
  • Page 8 Instruction Manual DECATHLON _ CODE SEA 83 Lite-Plywood wheel collar. block. Vent tube. Axle. Washer. wheel. Fuel fill tube. wheel. wheel collar. Washer. Fuel pick-up tube. nut. Axle. Blow through one of the lines to ensure the fuel lines have not become kinked in- wheel Pant.

  • Page 9: Installing The Main 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.

  • Page 10: Mounting The Engine

    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 align- ment, mark the locations of the engine mounting.

  • Page 11: Installing The Switch

    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.

  • Page 12: Installing The Horizontal Stabilizer

    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 open- ing in the mount. The notch in the sides of the mount allow the servo lead to pass through.

  • Page 13: Installing The Vertical Stabilizer

    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. Vertical Hinge slot. Stabilizer.

  • Page 14: Installing The Aileron Servos

    Instruction Manual DECATHLON _ CODE SEA 83 String. Small weight. Aileron Electric wire. servo. INSTALLING THE AILERON SERVOS. Servos. Small weight. Thread. Wing rib. Wing. Small Weight. Small Weight. String. String. Attach the string to the servo lead and carefully thread it though the wing. INSTALLATION THE PUSHROD Wing.
  • Page 15 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. M2 Lock nut. Attach to elevator - rudder control horn. Attach to servo arm in fuselage.
  • Page 16 Instruction Manual DECATHLON _ CODE SEA 83 Throttle. Elevator. Rudder. Elevator. Control horn. Elevator Pushrod. Rudder. M2 lock nut. Elevator. Throttle. Metal clevis. INSTALLING TAIL STRUT SUPPORT The tail strut system assembly follow pic- tures below. Elevator pushrod. Rudder pushrod.
  • Page 17 www.seagullmodels.com Vertical Fin. Horizontal Fin. Vertical Fin. Horizontal Fin. Horizontal Fin. Vertical Fin. Fuselage bottom. 90mm.
  • Page 18 Instruction Manual DECATHLON _ CODE SEA 83 M3 x 10mm. M3 x10 mm.
  • Page 19 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. 2) Wrap the receiver and battery pack in the protective foam rubber to protect them from vibration.

  • Page 20: Installing The Wing Strut

    Instruction Manual DECATHLON _ CODE SEA 83 Aluminum tube. 3x50mm. Wing tube. 5mm diameter pilot horn. C/A glue. M4x60mm. Insert two wing panels as pictures below. Wing bolt. M4x60mm. INSTALLING THE WING STRUT. Parts requirement.See pictures below. Plastic Screw. M4x15mm.
  • Page 21 www.seagullmodels.com Turnbuckle. 60mm. 85mm. M4x15mm.

  • Page 22: Control Throws

    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. 10cm.

  • Page 23: Preflight Check

    www.seagullmodels.com AEROBATIC FLYING 5) If your radio transmitter is equipped PREFLIGHT CHECK. with dual rate switches double check that they are on the low rate setting for your first few 1) Completely charge your transmitter flights. and receiver batteries before your first day of flying.

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