PC-9 semi Scale ARF Model Hand-made Almost R ead y to F Read eady Fll y R/C Model Aircraft ASSEMBL Y MANU AL ASSEMBLY MANUAL MS:12 Specifications Wingspan---------------------------------------60.63in, 1540mm. Wing area--------------------------------610 sq.in, 37.04sq.dm. Fuselage length--------------------------------43.7in, 1110mm. Approximate flying weight---------5.5-5.95lbs, 2500-2700g. Recommended engine size---------.40-.58 cu.in. 2-stroke. ----------------------------------------------.50-.
INTRODUCTION. Thank you for choosing the PC-9 ARTF by SEAGULL MODELS. The PC-9 was designed with the intermediate/advanced sport flyer in mind. It is a low-wing scale aeroplane 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.
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 PC-9 is made from natural materials and minor adjustments may have to be made.
PC-9 Instruction Manual. hinges are glued in place, a 1/64” gap or less will be maintained throughout the lengh of the aileron to the wing panel hinge line. Note: The hinge is constructed of a special material that allows the C/A to wick or penetrate and distribute throughout the hinge, securely bonding it to the wood structure of the wing panel and aileron. Note: Work the aileron up and down several times to “work in” the hinges and check for proper movement. HINGING THE ELEVATOR.
www.seagullmodels.com HINGING THE RUDDER. Glue the elevator hinges in place using the same tectniques used to hinge the ailerons. Epoxy. WING ASSEMBLY. Carefully slide the two wing halves together and firmly press them together, allowing the excess epoxy to run out. There should not be any gap in the wing halves. Use rubbing alcohol and a paper tower to clean up any excess epoxy.
PC-9 Instruction Manual. Thread. Remove covering. Small weight. Glue attached. INSTALLING THE AILERON SERVOS. Thread. Small weight. 3) Attach servo lead to the aileron servo. 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. Servo. 1) Install the rubber grommets and brass collets onto the aileron servo. Test fit the servo into the aileron servo mount.
www.seagullmodels.com AILERON LINKAGE. 1) Using a ruler & pen to draw a straight line as below picture. Thread. 4) Tape the servo lead to the wing to prevent it from falling back into the wing. Pen. Plastic tape. Straight line. 5) Reinstall the servo into the servo mount and secure the servo inplace using the wood screws provided with you radio system. 2) Locate the two nylon control horns, two nylon control horn backplates and four machine screws.
PC-9 Instruction Manual. 4) Using a 1mm drill bit and the control horns as a guide, drill the mounting holes through the aileron halves. 8) Make a 90-degree bend at the mark and cut off the excess wire leaving 10mm past the bend. 5) Mount the control horns by inserting the screws through the control horn bases and aileron halves, then into the mounting backplates. Do not overtighten the screws or the backplates may crush the wood.
www.seagullmodels.com 3) The landing gear wire is held in place using two nylon landing gear straps and four 3mm x 12mm wood screws. The straps should be located equal distance from the inside and outside ends of the wire. 4) Using the two landing gear straps as a guide, mark the locations of the four 3mm x 12mm mounting screws onto the wing surface. 8) Slide one 60mm diameter wheel onto each axle and push them up against the wheel collars.
PC-9 Instruction Manual. FUEL TANK. Install the pushrod wire as shown. INSTALLING THE STOPPER ASSEMBLY. Adjustable Connector. 1) Using a modeling knife, carefully cut off the rear portion of one of the two 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 (not included) to 2-1/4” long. Connect one end of the line to the weighted fuel pickup and the other end to the nylon pickup tube.
www.seagullmodels.com 4) Carefully heat the vent tube using a heat gun or lighter to permanently set the angle of the tube. Vent tube. INSTALLING THE FUEL TANK. Pushrod wire. Fuel Pickup Tube. Fuel Fill Tube. When the stopper assembly is installed in the tank, the top of the vent tube should rest just below the top surface of the tank. It should not touch the top of the tank. 5) Test fit the stopper assembly into the tank.
PC-9 Instruction Manual. Fuel tank. Vent tube. Fuel fill tube. Fuel pickup tube. 5) Attach the Z-Bend in the pushrod wire to the throttle arm on the carburetor. You will need to remove the throttle arm from the carburetor to be able to attach the Z-bend. When complete, reattach the throttle arm to the carburetor. MOUNTING THE ENGINE. 1) Trial fit your engine on the motor mount.
www.seagullmodels.com 4) Remove the cowl. Using a 5/64” drill bit, enlarge the holes in only the four cowl blocks. COWLING. 5) Using a 1/8” drill bit. Enlarging the holes through the cowl will prevent the fiberglass from splitting when the mounting screws are installed. 6) Slide the cowl back over the engine and secure it in place using four 3mm x 12mm wood screws. See picture below.
PC-9 Instruction Manual. INSTALLING THE SWITCH. INSTALLING THE SPINNER. Install the spinner backplate, propeller and spinner cone. The spinner cone is held in place using two 3mm x 12mm wood screws. The propeller should not touch any part of the spinner cone. If it does, use a sharp modeling knife and carefully trim away the spinner cone where the propeller comes in contact with it. 1) Install the switch into the precut hole in the servo tray, in the fuselage, from the bottom.
www.seagullmodels.com INSTALLING THE FUSELAGE SERVOS. 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) When you are satisfied with the alignment, hold the stabilizer in place with T- pins or masking tape, but do not glue at this time. 1) Install the rubber grommets and brass collets onto the elevator, rudder and throttle servos. Test fit the servos into the preinstalled servo tray.
PC-9 in the fuselage. Slide the stabilizer in place and realign. Double check all of your measurements once more before the epoxy cures. Hold the stabilizer in place with T-pins or masking tape and remove any excess epoxy using a paper towel and rubbing alcohol. 5) After the epoxy has fully cured, remove the masking tape or T-pins used to hold the stabilizer in place. Carefully inspect the glue joints.
www.seagullmodels.com 2) Position the two elevator horns on the bottom side of each elevator. The clevis attach- ment holes should be positioned over the hinge line. 2mm X 20mm. Remove covering. 5) Slide the vertical stabilizer back in place. Using a triangle, check to ensure that the vertical stabilizer is aligned 90º to the horizontal stabilizer. Horizontal Stabilizer. 90º Control Horn. Vertical Stabilizer. Mounting Screws.
PC-9 Instruction Manual. ELEVATOR-RUDDER PUSHROD INSTALLATION. Cut. Rubber Band. Antenna. Modified Servo Arm. Battery. Clevis. Control horn. Tie wrap. Elevator pushrod. Rudder pushrod. Receiver. ATTACHMENT WING - FUSELAGE. See picture below: Rudder. Switch. Throttle. Elevator. INSTALLING THE RECEIVER AND BATTERY. 1) Plug the five servo leads and the switch lead into the receiver. Plug the battery pack lead into the switch also.
www.seagullmodels.com 4) If the nose of the plane falls, the plane is nose heavy. To correct this first move the battery pack further back in the fuselage. If this is not possible or does not correct it, stick small amounts of lead weight on the fuselage 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.
PC-9 20 Instruction Manual. The pictures and parts shown above should be changed without notice.
