MS: 74 ASSEMBLY MANUAL “Graphics and specfications may change without notice”. Specifications Wingspan---------------------------------------- 88.2 in---------------------------- 224cm. Wing area--------------------------------------- 1137.1 sq.in--------------- 73.4 sq.dm. Approximate flying weight--------------------9.95- 11 lbs------------------4.5 - 5kg. Length--------------------------------------------- 56.2in-------------------------- 142.7cm. Recommended engine size---------------- .1.2-1.5 cu.
Instruction Manual PIPER CUB_ CODE SEA 74. INTRODUCTION. Thank you for choosing the PIPER CUB ARTF by SEAGULL MODELS. The PIPER CUB 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 PIPER CUB is made from natural materials and minor adjustments may have to be made.
Instruction Manual PIPER CUB_ CODE SEA 74. 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. 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. Hinge. Aileron. ELEVATOR CONTROL HORN. Install the elevator control horn using the same method as with the aileron control horns. AILERON CONTROL HORN Aileron control horn: See pictures below. 2 sets. 2 sets. 3x35mm. 3x40mm. CONTRONL HORN M3 CONTRONL HORN M3 SCREW. Aluminum Washer. Epoxy. Horizontal Stabilizer. Epoxy. ALUMINUM WASHER. M3 LOCK NUT. Aluminum Washer. Wing M3 LOCK NUT. ALUMINUM WASHER. Epoxy. Horizontal Stabilizer. 16mm. Wing 16mm. Epoxy.
Instruction Manual PIPER CUB_ CODE SEA 74. 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 PIPER CUB_ CODE SEA 74. 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. Rubber band. WHEEL INSTALLATION. Fuel tank. 1) Assemble and mounting the wheel as shown in the following pictures. 2) Follow diagram below for wheel installation: Vent tube. Fuel fill tube. Fuel pick-up tube. Wheel collar. Landing gear. Wheel. 8 Wheel collar.
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 LANDING GEAR Wheel Fairing. 1.5mm diameter. 1.5mm diametter. MOUNTING THE ENGINE. 1) Install the pushrod housing through the predrilled hole in the firewall and into the servo compartment. The pushrod housing should protrude 1/4" out past the front of the firewall. Make a Z-Bend 1/4" from one end of the plain wire pushrod.
Instruction Manual PIPER CUB_ CODE SEA 74. 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. 155mm . Trim and cut. 4.2 mm diameter. 5) Bolt the engine to the engine mount using the four machine screws. Double check that all the screws are tight before proceeding. 6) Attach the Z-Bend in the pushrod wire to the throttle arm on the carburetor. Trim and cut. Trim and cut.
www.seagullmodels.com Because of the size of the cowl, it may be necessary to use a needle valve extension for the high speed needle valve. Make this out of sufficient length 1.5mm wire and install it into the end of the needle valve. Secure the wire in place by tightening the set screw in the side of the needle valve. 2) While keeping the back edge of the cowl flush with the marks, align the front of the cowl with the crankshaft of the engine.
Instruction Manual PIPER CUB_ CODE SEA 74. Elevator servo . Rudder servo . Throttle servo arm. Elevator servo . Switch. INSTALLING THE HORIZONTAL STABILIZER. INSTALLING THE FUSELAGE SERVO. 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. Draw center line. 1) Install the rubber grommets and brass collets onto the throttle servo.
www.seagullmodels.com 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 Stabilizer. 90º Horizontal Stabilizer. Hinge slot. C/A glue. Hinge. Epoxy. Pen. When cutting through the covering to remove it, cut with only enough pressure to only cut through the covering itself. Cutting into the balsa structure may weaken it.
Instruction Manual PIPER CUB_ CODE SEA 74. Aileron Servo. Servo electric wire. 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. Aileron. Aileron.
www.seagullmodels.com 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 servo arm in fuselage. Attach to elevator - rudder control horn. Throttle. Elevator. Rudder.
Instruction Manual PIPER CUB_ CODE SEA 74. INSTALLING TAIL STRUT SUPPORT Control horn. Elevator Pushrod. Metal clevis. The tail strut system assembly follow pictures below. M2 lock nut. Elevator pushrod. 3x15mm. 3x10mm. 2 Rudder pushrod. 1 Elevator. Throttle. Rudder. Elevator. 1 Vertical Fin. 2 16 Horizontal Fin.
www.seagullmodels.com 1 Vertical Fin. Horizontal Fin. 2 2 Fuselage bottom. 2 1 2 Bottom. Vertical Fin. 1 3x10mm. Horizontal Fin. M3 x 10mm.
Instruction Manual PIPER CUB_ CODE SEA 74. 3 4 4 3 3 4 M3 x 10mm. 4 4 3 1 1 2 2 3 3 4 4 MOUNTING THE TAIL WHEEL. See picture below. 3x25mm. 3 x10 mm.
www.seagullmodels.com 3x25 mm. 120MM. Aluminum tail Landing gear. 3x10 mm. 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. 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. Battery. Spring. Receiver. Tail landing gear.
Instruction Manual PIPER CUB_ CODE SEA 74. 3x50mm. Aluminum tube. Plastic Screw. Wing tube. C/A glue. Insert two wing panels as pictures below. 4.5-5mm diameter screw. M3x50mm. Wing bolt. M3x50mm.
www.seagullmodels.com INSTALLING THE WING STRUT. Parts requirement.See pictures below. M4x10mm. Turnbuckle. Fuselage. M4x10mm. 60mm. 85mm.
Instruction Manual PIPER CUB_ CODE SEA 74. Plastic Screw. 1 M4x25mm. BALANCING. 1) It is critical that your airplane be balanced correctly. Improper balance will cause your plane to lose control and crash. The center of gravity is locate 9.5cm back from the leading edge of the wing, measured at wing tip. 2) 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.
www.seagullmodels.com INITIAL FLYING AEROBATIC FLYING 4) By moving the position of the adjustable control horn out from the control surface, you will decrease the amount of throw of that control surface. Moving the adjustable control horn toward the control surface will increase the amount of throw. PREFLIGHT CHECK. 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.
