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Der Jet Model DerJet F-35 Lighting Instruction Manual

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INSTRUCTION MANUAL
Specification
Wingspan .................................. 1,340mm
Length ......................................... 1,960mm
Scale ............................................. 1:8
Equipment required
Turbine: .......................100-120N
Radio: ...........................Minimum 9 channel radio system.
Servos: .........................Elevators - 2 x 20Kg+ servos
..........................................Ailerons - 2 x 10Kg
..........................................Rudders - 2 x 4Kg+ midi servos
..........................................Nosewheel steering - 1 standard size servo.
Valves: .........................3 x Dual action electronic valves (Jet Tronic)
..........................................1x Brake valve.
Gyro: ..............................3 Axis gyro system (Powerbox iGyro3e)
General: ......................Various adhesives, radio extension leads, fuel
accessories, scale pilot.
Der Jet Model
No. 178-1, Sec. 2, Nantun Rd., Nantun Dist.,
Taichung City 408, Taiwan.
info@derjetmodel.com
www.derjetmodel.com

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Summary of Contents for Der Jet Model DerJet F-35 Lighting

  • Page 1 Valves: ......3 x Dual action electronic valves (Jet Tronic) ..........1x Brake valve. Gyro: ......3 Axis gyro system (Powerbox iGyro3e) General: ......Various adhesives, radio extension leads, fuel accessories, scale pilot. Der Jet Model No. 178-1, Sec. 2, Nantun Rd., Nantun Dist., Taichung City 408, Taiwan. info@derjetmodel.com www.derjetmodel.com...
  • Page 2 WARNING This F-35A model is not suitable for aeromodellers without experience in building, operating and flying technically complicated airframes. Success requires care and consideration. Assembling this flying model requires the builder and persons operating it to understand DerJet Model have no control on how it is assembled and the equipment chosen is installed.

  • Page 3: Before You Begin

    The F-35A is a great modelling platform as the undercarriage stays in the fuselage making transport easy. NB: The valve used on the undercarriage must hold pressure on the rams to keep the gear locked down in transport. Assembly at the field is also easy with a single servo plug and screw to fix on each wing.
  • Page 4 WINGS The wings are relatively simple, as they have a single control surface and there are no air systems in the wing panels. A single servo with a torque of at least 10kg is required. Because of the wing fairing shape, a servo with a maximum depth below the mounting lugs of 27mm is required.
  • Page 5 Cut down the supplied brass steering arm so that it fits in the space, match the servo arm centres to the steering arm hole centres. The F-35 rudders are quite powerful, so 6-8mm movement each way is sufficient. A ball link is required on the brass rudder horn steering arm, because of the angles.
  • Page 6 Undercarriage operation Some care and thought is required when routing the airlines from the main legs and units. Operate the legs multiple times so that you can understand the path taken by the various air connections. Some will twist and move quite some distance during the retraction process, so allowance in the tubing free lengths will be critical.
  • Page 7 UNDERCARRIAGE & GEAR DOOR DETAILS A selection of four images that detail the layout of the pipe work to the main gear, brakes and doors. Use these to plan your installation. CANOPY & COCKPIT There is very little clearance under the cockpit tub base, you can gauge the space available before you join the fuselage halves-shine a torch forward from the fuselage split.

  • Page 8: Fuel Tanks

    FUEL TANKS Each fuel tank is approximately 1.9 litres. These should be connected in parallel via a T piece to the supplied hopper tank. The main tanks sit on two flat plywood plates, located just behind the fuselage split. They should be retained by Velcro straps.

  • Page 9: Final Assembly

    The tail pipe mounting straps at the front should be screwed to the turbine mounting rails, or folded 90 degrees and fixed to the former. The turbine to tube gap should be provided by your chosen brand of turbine, but 25-30mm is common. This is turbine tailcone back edge, to the start of the steel tailpipe tube.
  • Page 10 Low: Aileron: 10 mm each way, using 25% expo Elevator: 50 mm up/30 mm down, using 35-40% expo Rudder: 6 mm each way 0-15% expo We recommend fitting a 3 axis gyro like the Powerbox iGyro 3e. To get the best from this unit set the internal gyro gains with elevator and rudder at 80%, leave the ailerons at 100%.
  • Page 11 Landing is performed with the ailerons level. The airframe has plenty of drag ‘dirty’ , so landing speeds are very low, with throttle being the primary height control once the nose is pulled up on approach. Because of the airframe design requiring a high alpha approach, landing with the iGyro in Heading hold mode helps maintain the nose high sit.

This manual is also suitable for:

Derjet f-35a