Aviatik (oz16493)

About this Plan

Aviatik. Radio control sport biplane model. Wingspan 1080 mm.

Quote (google-translated): "The inspiration for this model comes from the time of the First World War; they are aircraft named 'Albatros,' 'Brandenburg,' and 'Aviatik,' which our model resembles in its appearance. It is, of course, not a semi-scale design; the model is intended purely for the joy of flying and is therefore uncomplicated.

The essential thing for a 'Sunday flyer is easy transport of the models. The Aviatik can be assembled and disassembled in seconds, as only three plastic screws are required for assembly. Disassembled, the model fits in any car trunk. Building the model is also straightforward, and it doesn't take many hours in the workshop between making the first ribs and the maiden flight.

The fuselage: The two side panels made of 2 mm balsa are reinforced in the front half with 0.8 mm plywood. (The outline of this reinforcement is indicated in the construction plan with black triangles.) In the rear section, the side panels are reinforced with 4 x 4 mm balsa strips. Plywood bulkheads 1-4 and the 5 mm plywood engine bulkhead are glued between the side panels. The fuselage is then glued together at the rear, and the 4 x 4 mm balsa cross braces are installed. Balsa half-frames 5-8 are then attached to these cross braces, and the cabin floor is glued in place at the same time. The rounded fuselage spine is planked with 2 mm balsa. The planking is applied in two parts: from bulkhead 2 to 4, and the second part from 4 to half-frame 8.

The round cutouts above the two pilot seats are then cut into the planking. Before planking the underside of the fuselage, the pine canopy struts are glued into the fuselage interior. First, we need to drill corresponding holes in the upper fuselage planking for these struts. After the glue has dried, we check the symmetrical fit of the canopy and then connect the struts to the two 8 x 4 mm pine wing support strips. A cross brace made of 3 mm plywood (glued together from two pieces) is glued between these strips, and an M5 nut is epoxied to its underside. Finally, the fuel tank compartment is painted with two-component varnish, and the 3 mm plywood mount for the front landing gear leg is glued in place. The 1 mm steel wire strut is then sewn on and epoxied in place.

Now the underside of the fuselage can be planked with 1 mm balsa in the front section and 2 mm balsa in the rear. 20 mm thick balsa blocks are glued to the nose of the fuselage and sanded flush with the fuselage contour. The lower wing is held in place with two screws, and the mount (ready-made) is attached to two 3 mm plywood plates at the location indicated in the plans. The servo tray can also be glued in place now. The fuselage is now complete and only needs to be sanded and covered with thin covering paper.

Landing gear: This consists of three parts, which are preferably hard-soldered. If soft-soldering is used, the joints must first be well wrapped with thin iron wire. The landing gear struts are bent from 2.5 mm steel wire, and the axle is made of 3 mm steel wire. The front strut is held in a groove in the mount with two strips of sheet metal, while the rear landing gear strut is inserted into a groove in the wing center section and secured with the same nuts that hold the wing in place. This makes assembling the model easier: The landing gear can be folded forward and the wing can be easily slid under the fuselage..."

Direct submission to Outerzone.

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