Jumper 25 HIGH WING TRAINER - ENGINE SIZE .25 - 2STROKE Hand-made Almost Ready to Fly R/C Model Aircraft ASSEMBLY MANUAL Specifications Wingspan______________________________ , 157cm Wing area ____________________________ 1256Cm2 Approximate flying weight __________________ , 2.5kg Recommended engine size ___0.25-0.32 cu.
Jumper 25 Instruction Manual Thank you for choosing the Jumper 25 ARTF by SEAGULL MODELS. The Jumper 25 was designed with the intermediate/advanced sport flyer in mind. It is a High-wing 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.
Jumper 25 HARDWARE PACK (1) Moulded plastic fuel tank (1) Pre-assembled fuel tank stopper (1) Weighted fuel pick-up (clunk) (2) Main wheels (1) Undercarriage (2) 3 x 12mm metal screws for spinner (4) 3 x 250mm metal screws for main u/c (1) Spinner with backplate (4) Wheel collars with four 3 x 18mm set screws (2) 140mm long threaded rod for aileron pushrods (5) Nylon clevises (1) Adjustable servo connector (5) Nylon snap keepers (5) 3 x 350mm machine screws, washers & nuts (5)
Jumper 25 Instruction Manual 8. 9. Dihedral brace When the epoxy has cured, carefully remove the masking tape from the wing. Peel off the backing from the self adhesive covering strip. Apply the strip to the centre section of the wing starting from the bottom trailing edge. Wrap the strip all the way around the wing until it meets the trailing edge again. Trim off any excess strip.
Jumper 25 Instruction Manual INSTALLING THE AILERON SERVO 6) Install the aileron servo into the servo mount, with the output shaft towards the leading edge of the wing, using the wood screws provided with your radio system. Drill 1/16” pilot holes through the mount before installing the screws. This will prevent the wood from splitting. 5) Slide the pushrod wires following picture bellow. 6) With both the aileron servo and the ailerons centered.
Jumper 25 Instruction Manual INSTALLING THE MAIN GEAR WIRES 1) Using a modeling knife, remove the covering from over the two main gear mounting slots located in the bottom of the fuselage. 2) Insert the 90º bend of one main gear wire into the predrilled hole in one mounting slot. 4) Using the two landing gear straps as a guide, mark the locations of the four 3mm x 12mm mounting screws onto the fuselage surface. 5) Remove the two straps and the gear wire.
Jumper 25 9) Slide one 60mm diameter wheel onto each axle and push them up against the wheel collars. Slide the remaining wheel collars with 3mm x 6mm set screws onto the axles. Push them up against the wheels and tighten the set screws. The wheels should spin free and not bind in any way. If they do bind, loosen the set screws in the outer wheel collars and move the collars out a small amount. Retighten the set screws. Instruction Manual Installing steering arm as follow.
Jumper 25 Instruction Manual FUEL TANK PARTS REQUIRED {1} {1} {1} {1} {1} Molded Nylon Fuel Tank Preassembled Stopper Assembly Metal Weighted Pick-Up Molded Foam Fuel Tank Support dowell silicon tubing not inclued 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. 4) Test fit the stopper assembly into the tank.
Jumper 25 Instruction Manual INSTALLING THE FUEL TANK TOOLS REQUIRED Pushrod wire 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. 1) Using a modeling knife, cut one lengths of fuel line 20” long. Connect one line to the vent tube and one line to the fuel pick up tube on the stopper. See picture bellow.
Jumper 25 MOUNTING THE ENGINE PARTS REQUIRED Instruction Manual 3) Temporarily bolt the plates to the motor mount, but do not completely tighten them down at this time. Leave them slightly loose so they can be moved if needed. 9) 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 car- buretor to be able to attach the Z-bend. When complete, reattach the throttle arm to the car- buretor.
Jumper 25 INSTALLING THE FUSELAGE SERVOS PARTS REQUIRED Instruction Manual Some switches come with a hole drilled through the switch tab for this very purpose. If your switch does not, remove the switch and drill a 3/32” hole through the middle of the switch tab. INSTALLING THE FUSELAGE SERVOS 4. Install the rubber grommets and brass collets onto the elevator, rudder and throttle servos. Test fit the servos into the preinstalled servo tray.
Jumper 25 HORIZONTAL STABILIZER. PARTS REQUIRED {1} Horizontal Stabilizer with Elevator Halves ALIGNING THE HORIZONTAL STABILIZER Instruction Manual MOUNTING THE HORIZONTAL STABILIZER 6) With the stabilizer held firmly in place, use a pen and draw lines onto the stabilizer where it and the fuselage sides meet. Do this on both the right and left sides and top and bottom of the stabilizer.
Jumper 25 10) 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. Use more epoxy to fill in any gaps that may exist that were not filled previously and clean up the excess using a paper towel and rubbing alcohol.
Jumper 25 Instruction Manual 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 Vertical Stabilizer Control Horn 6) When you are sure that everything is aligned correctly, mix up a generous amount of Flash 30 Minute Epoxy. Apply a thin layer to the mounting slot in the top of the fuselage and to the sides and bottom of the vertical stabilizer mounting area.
Jumper 25 Instruction Manual 5) Install an adjustable servo connector in the hole closest to the center of the rudder servo arm. You need to use a “dual type” servo arm. Install the connector using the same technique as with the throttle. 6) Connect the elevator and rudder servos to your radio’s receiver and turn on the system. Set the trim tabs on the transmitter to neutral and center the servo arms. The elevator and rudder servo arms should be perpendicular to the servos.
Jumper 25 Instruction Manual Cut Rubber Band Antenna Modified Servo Arm BALANCING You should cut from pushrod of throlte or nose gear INSTALLING THE SPINNER 1) 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.
Jumper 25 Instruction Manual FLIGHT PREPARATION CONTROL THROWS 1) We highly recommend setting up the Jumper 25 using the control throws listed at right. We have listed control throws for both initial test flying/sport flying and aerobatic flying. 2) Turn on the radio system, and with the trim tabs on the transmitter in neutral, center the control surfaces by making adjustments to the clevises or adjustable servo connectors. The servo arms should be centered also.
Jumper 25 move too much, turn the adjustable control horns out away from the wing. Do the opposite if there is not enough throw. It is important that both ailerons move the same amount, both up and down. D) Once the control throws and movements are set, tubing must be added to the clevises to ensure they do not release in the air. Cut a piece of fuel line into five 1/4” long pieces. Unsnap the clevises and slip one piece over each clevis. Snap the clevises back in place and slide the tubing up over them.
SEAGULL 40 LOW WING TRAINER Hand-made Almost Ready to Fly R/C Model Aircraft ASSEMBLY MANUAL Specifications Wingspan______________________________ , 145cm Wing area ____________________________ 4100Cm2 Approximate flying weight __________________ , 2.5kg Recommended engine size ___0.32-0.46 cu. ins 2-stroke _____________________________0.52 cu.
PC-9 semi Scale ARF Model Engine size .40-.46 Cu. Ins 2- stroke Hand-made Almost Ready to Fly R/C Model Aircraft ASSEMBLY MANUAL Additional items required Specifications Wingspan_______________________________ 161cm Wing area __________________________4025 sq. cm. Approximate flying weight ________________ 2.6-2.9kg Recommended engine size ___0.40-0.46 cu.
SPACE WALKER Hand-made Almost Ready to Fly R/C Model Aircraft ASSEMBLY MANUAL Specifications Wingspan ___________________________________ 160cm Lenght ______________________________________ 103 cm Wing area __________________________________ 4240cm2 Recommended engine size ________ 0.46-0.61 cu.
F-4U CORSAIR Engine size .61-.90 Cu. Ins 2- stroke Hand-made Almost Ready to Fly R/C Model Aircraft ASSEMBLY MANUAL Specifications Wingspan_____________________ 62 inches, 157.5cm Wing area ____________________________700 sq. in. Approximate flying weight __________ 7-9.5lb, 3.2-4.3kg Recommended engine size ___0.61-0.90 cu. ins 2-stroke __________________________.91-.120 cu.
Jumper 25 Instruction Manual PRODUCT EVALUATION SHEET Telling us what you like and do not like, determines what model kits we make and how we make them. We would therefore appreciate it if you would take a few minutes of your time to answer the following questions about this kit. . Kit: Jumper 25- ARTF . Where did you learn about this kit? o Magazine Ads o Model Shop o Internet . What did you like most about this kit? o Assembly Manual o Parts Fit o Hardware Supplied o Price o Other .
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