Fournier RF-4D with. rib fl.

Aeronaut Fournier RF-4D with. rib fl.

Item number: 135501
EAN: 4012230113395

The Fournier RF-4D model, which has been popular for many years, is now equipped with ribbed wings. The wings are constructed with precisely laser-cut components on the well-known aero-naut jig, which enables fast and distortion-free assembly. A precise and quick construction result is aimed at with sophisticated auxiliary templates. The wings are planked with a maple veneer that has also been cut to size and glued with a special textile fiber in order to achieve problem-free processing and high resilience. The material, called A-Tex, is a product manufactured by aero-naut itself and used in many aero-naut kits. The 3D-style building instructions typical of aero-naut enable step-by-step assembly and support the model builder with 3D drawings and detailed text. This makes assembly easy. The model was constructed on a scale of 1:4 so that retractable landing gear and airbrakes could also be installed. Moderate aerobatics are possible with the Fournier. Loops flown with feeling, effective turns, rolls or similar are no problem. Long approaches can be precisely divided with the help of the brake flaps. The wing is in two parts and is made from an 18 mm duralumin tube; the tailplane is mounted on carbon tubes and firmly glued to the fuselage. A large recess on the fuselage floor ensures access to the RC equipment. The wing lock can also be reached here. The GRP fuselage is of the high quality you are accustomed to from aero-naut and has moldings and all passages for wings and HLW. The horizontally split, two-piece GRP bonnet already has guides for centering both parts. The cockpit equipment is based on the original, these parts are made of ABS. The building instructions give further tips on how to design the interior (e.g. upholstery). The sprung retractable undercarriage with hollow rubber tires was specially developed for this model. The parts made of duralumin or steel are precisely water-jet cut, hard-soldered and powder-coated. The landing gear retracts into an ABS fender built into the fuselage. The pneumatic EZFW control with a compressed air cylinder with a diameter of 18 mm (bore) is designed to be single-acting. This is an important contribution to safety, since the landing gear is automatically extended in the event of a pressure loss in the system! Included is an adjustable pressure reducer, with which the timing of retraction and extension can be set “scale”. The control valve is also designed to be single-acting; it is actuated by pressing a z. B. on the (mini) servo-mounted cam (cam), the extension takes care of a spiral spring. Only a hand pump with pressure gauge (e.g. from Robart) is not included. it is actuated by pressing a z. B. on the (mini) servo-mounted cam (cam), the extension takes care of a spiral spring. Only a hand pump with pressure gauge (e.g. from Robart) is not included. it is actuated by pressing a z. B. on the (mini) servo-mounted cam (cam), the extension takes care of a spiral spring. Only a hand pump with pressure gauge (e.g. from Robart) is not included.

The model kit contains: Detailed 3D assembly instructions, GRP fuselage and engine hood, wing kit made of lasered wooden parts, airbrakes, spinner, retractable landing gear and support wheels, spur, dummy exhaust and filler nozzles, canopy, ABS parts, CNC-milled parts made of plywood and GRP , stamped parts, duralumin tube, GRP tube (guide of the connection), wing locking, small parts set. The construction of the wings is simplified by the well-known aero-naut Helling made of Depron without distortion.

Technical data:
- Construction: wood/GRP kit
- Wingspan approx. [mm]: 2815
- Length approx. [mm]: 1510
- Wing area approx. [dm²]: 83,3
- Flight weight approx. [g]: 4900-5300