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Seagull Models SEA385 Assembly Manual

Giant scale cessna o-1 bird dog 122” arf 70-125cc
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Code : SEA385
ASSEMBLY MANUAL
Speciications:
Wingspan------------------ 122 in------------------- 310 cm.
Wing area------------------ 2017.8 sq.in----------- 130.2 sq.dm.
Weight---------------------- 36.4 lbs---------------- 16.5 kg.
Length---------------------- 85 in-------------------- 215.8 cm.
Engine size---------------- 70 - 125cc gasoline engine.
Radio----------------------- 8 channels with 8 digital servos.
1

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Summary of Contents for Seagull Models SEA385

  • Page 1 Code : SEA385 ASSEMBLY MANUAL Speciications: Wingspan------------------ 122 in------------------- 310 cm. Wing area------------------ 2017.8 sq.in----------- 130.2 sq.dm. Weight---------------------- 36.4 lbs---------------- 16.5 kg. Length---------------------- 85 in-------------------- 215.8 cm. Engine size---------------- 70 - 125cc gasoline engine. Radio----------------------- 8 channels with 8 digital servos.

  • Page 2: Kit Contents

    Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc Instruction Manual. INTRODUCTION hank you for choosing the Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc ARTF by SG MODELS . he was designed with the intermediate/advanced sport lyer in mind.

  • Page 3: Additional Items Required

    LED LIGHT SET KIT CONTENTS SEA385 Giant Scale Cessna O-1 Bird Please see pictures below. Dog 122” ARF 70-125cc 1. Fuselage 2. Wing set (2) 3. Tail set (3) 4. Canopy 5. Cowling 6. Wing tube 7. Landing gear 8. Tail wheel 9.
  • Page 4 Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc Instruction Manual. Epoxy Epoxy...

  • Page 5: Install The Ailerons

    C/A glue INSTALL THE AILERONS Please see pictures below. M2x6mm...
  • Page 6 Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc Instruction Manual. Remove the ailerons from the wing and Apply epoxy into each of the holes in the remove the hinges. ailerons using a spare piece of pushrod wire or toothpick. Use a small piece of rough sandpaper to Make sure to use enough epoxy so it scuf the hinges for better epoxy adhesion.
  • Page 7 Check the it of the aileron to the wing. he top of the ailerons will align to the top of the wing. Make sure movement is Epoxy smooth and bind free. We prefer 30-minute epoxy to allow enough working time during the hinge installation.

  • Page 8: Installing The Aileron Servos

    Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc Instruction Manual. INSTALLING THE AILERON SERVOS 40mm Use drill bit in a pin vise to drill the mouting holes in the blocks. Minimum servo spec. 1.5mm Torque : 27.3 kg-cm (378 oz-in) @6.0V 33.7 kg-cm (467 oz-in) @7.4V 38.2 kg-cm (530 oz-in) @8.4V Transit Speed : 0.14 sec/60 @6.0V...
  • Page 9 Use dental loss or heat shrink tubing to secure the connection between the servo and extension wire so they cannot become unplugged accidentally. Use dental loss or heatshrunk tube to secure the connection so they cannot be- come unplugged. Secure the servo to the aileron hatch us- ing Phillips screwdriver and the screws provided with the servo.
  • Page 10 Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc Instruction Manual. INSTALLING THE FLAP PUSHROD AILERON PUSHROD INSTALLATION Please see below pictures. 120mm 120mm...
  • Page 11 Attach the lap servo to the lap servo Attach the clevis to the lap servo arm. cover. Center the lap servo (or set the values to 0 for both up and down) and in- stall the servo arm perpendicular to the servo centerline.
  • Page 12 Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc Instruction Manual. Once adjusted, make sure all clevis re- tainers are in position. Apply a drop of threadlock near the clevis, then tighten the nut against the clevis to keep the link- age from changing length inside the wing.
  • Page 13 Install plastic ribs. 25mm C/A glue...
  • Page 14 Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc Instruction Manual. ROCKETS INSTALLATION Please study images below. Epoxy...
  • Page 15 M4x50mm Epoxy...
  • Page 16 Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc Instruction Manual.
  • Page 17 M3x35mm...
  • Page 18 Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc Instruction Manual. hen, install struts on the wings and fuselage. M4x20mm...
  • Page 19 INSTALL ELEVATOR HINGES Test it the hinges into the elevator, and then the hinges into the horizontal stabilzer. Ensure that the hinge pockets line up, and that the hinges move freely. Epoxy hinges the same way you did the aileron hinges. INSTALL ELEVATOR CONTROL HORN Install the elevator control horn using the same method as same as the elevator...
  • Page 20 Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc Instruction Manual. Install plastic ribs. Epoxy Epoxy C/A glue 25mm...

  • Page 21: Elevator Servo Installation

    ELEVATOR SERVO INSTALLATION he elevators have been pre-hinged and glued to the stabs and are ready for light. No other steps are necessary for hinging. NOTE : servos arm for elevator is not provided from manufacturer. Install servo with servo mounting screws. Minimum servo spec.
  • Page 22 Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc Instruction Manual. ELEVATOR PUSHROD INSTALLATION Please study images below. 100mm Repeat all the above steps for the other elevator. INSTALL THE TAIL LIGHT BULB...
  • Page 23 Epoxy...
  • Page 24 Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc Instruction Manual. INSTALL NAIL HINGE RUDDER Test it the hinges into the rudder, and then the hinges into the tail. Ensure that the hinge pockets line up, and that the hinges move freely. Epoxy Epoxy INSTALL RUDDER CONTROL HORN...
  • Page 26 Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc Instruction Manual. 120mm Rudder servo...

  • Page 27: Horizontal Tail Installation

    HORIZONTAL TAIL INSTALLATION Please study images below. Install plastic ribs. 25mm...

  • Page 28: Mounting The Tail Wheel

    Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc Instruction Manual. M3x12mm MOUNTING THE TAIL WHEEL Locate items necessary to install tail wheel.
  • Page 29 M3x15mm...
  • Page 30 Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc Instruction Manual. M3x20mm...

  • Page 31: Landing Gear Installation

    M3x12mm LANDING GEAR INSTALLATION M3x4mm Locate items needed for landing gear installation.
  • Page 32 Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc Instruction Manual. M4x20mm...

  • Page 33: Installing The Stopper Assembly

    Switch INSTALLING THE ENGINE SWITCH Trim and cut INSTALLING THE RECEIVER SWITCH Install the switch into the precut hole in the side, in the fuselage. 3/32” Hole Switch INSTALLING THE STOPPER ASSEMBLY Using a modeling knife, carefully cut of the rear portion of one of the 3 nylon tubes leaving 1/2”...

  • Page 34: Fuel Tank Installation

    Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc Instruction Manual. Using a modeling knife, cut one length You should mark which tube is the vent of silicone fuel line. Connect one end of and which is the fuel pickup when you attach the line to the weighted fuel pick up and fuel tubing to the tubes in the stopper.

  • Page 35: Mounting The Engine

    Vent tube Fuel pick up tube Fuel ill tube MOUNTING THE ENGINE Please see below pictures.
  • Page 36 Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc Instruction Manual. 5.2mm M5x90mm...
  • Page 37 195mm Ignition Modude...
  • Page 38 Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc Instruction Manual. THROTTLE SERVO ARM INSTALLATION Install adjustable servo connector in the servo arm as same as picture below: Reinstall the servo horn by sliding the connector over the pushrod wire. Center the throttle stick and trim and install the servo horn perpendicular to the servo center line.
  • Page 39 Move the throttle stick to the closed posi- COWLING tion and move the carburetor to closed. Use a 2.5mm hex wrench to tighten the Please see Images below: screw that secures the throttle pushrod wire. Make sure to use threadlock on the screw so it does not vibrate loose.

  • Page 40: Installing The Spinner

    Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc Instruction Manual. M4x25mm M4x25mm Because of the size of the cowl, it may be nec- essary to use a needle valve extension for the Use a drill and drill bit to drill the holes high speed needle valve.
  • Page 41 he propeller should not touch any part of the spinner cone. If it does, care- fully trim spinner cone opening until pro- peller no longer comes in contact with it. M2x6mm INSTALL LED BULB ON BODY BELLY Parts requirement. See pictures below. INSTALL THE WINDOW Parts requirement.
  • Page 42 Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc Instruction Manual. Epoxy...
  • Page 43 Epoxy Epoxy...
  • Page 44 Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc Instruction Manual. M3x25mm...
  • Page 45 M2x8mm...
  • Page 46 Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc Instruction Manual. M2x8mm M2x8mm INSTALLATION COCKPIT AND CANOPY Locate items necessary to install.
  • Page 48 Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc Instruction Manual. Epoxy Epoxy...
  • Page 49 Epoxy Epoxy INSTALLING BATTERY - RECEIVER Plug the servos leads and the switch lead into the receiver. Plug the battery pack lead into the switch also. Wrap the receiver and battery pack in the protective foam rubber to protect them from vibration.
  • Page 50 Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc Instruction Manual. Receiver Two batteries ATTACHMENT WING- FUSELAGE Parts requirement.See pictures below. M6x45mm...

  • Page 51: Antenna Installation

    M6x20mm ANTENNA INSTALLATION Parts requirement.See pictures below.
  • Page 52 Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc Instruction Manual. INSTALL FUEL CAP Parts requirement.See pictures below.
  • Page 53 130mm 60mm Epoxy Epoxy...

  • Page 54: Apply The Decals

    Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc Instruction Manual. BALANCING An important part of preparing the air- crat for light is properly balancing the model. 1) Attach the wing panels to the fuse- lage. Make sure to connect the leads from Epoxy the aileron to the appropriate leads from the receiver.

  • Page 55: Control Throws

    CONTROL THROWS Ailerons: Rudder: High Rate : High Rate : Up : 40mm Right : 70mm Down : 40mm Let : 70mm Low Rate : Low Rate : 120mm Right : 60mm Up : 30mm Let : 60mm Down : 30mm Elevator: Flap: High Rate :...

  • Page 56: Flight Preparation

    Giant Scale Cessna O-1 Bird Dog 122” ARF 70-125cc Instruction Manual. FLIGHT PREPARATION PREFLIGHT CHECK Check the operation and direction of the 1) Completely charge your transmit- elevator, rudder, ailerons and throttle. ter and receiver batteries before your irst day of lying. A) Plug in your radio system per the 2) Check every bolt and every glue manufacturer’s instructions and turn eve-...
  • Page 57 If you have any queries, or are interested in our products, please feel free to contact us Factory : 12/101A - Hamlet 4 - Le Van Khuong Street - Dong hanh Ward - Hoc Mon District - Ho Chi Minh City - Viet Nam. Oice : 62/8 Ngo Tat To Street - Ward 19 - Binh hanh District - Ho Chi Minh City - Viet Nam Phone : 848 - 86622289 or 848- 36018777...

This manual is also suitable for:

Sea385cm

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