About this Plan
Quax. Radio control sport model. Wingspan 150 cm.
Quote (google-translated from the German): "I have developed a cheap and easy-to-build model that has good flight characteristics especially for our young people. The prototype flew the first time in December 1977, the rudder and altitude control was satisfactory, as were the gliding characteristics and the landing speed. The start with the two-leg landing gear will be a bit too difficult for the beginner, so I would recommend a hand launch. The fuselage rear can either be covered or left open, the strength is sufficient either way.
Wings: The ribs item 28 are made of plywood and serve as templates for the production of the others using the block process. The ribs item 29 are made of balsa.
Place the ribs on the lower main spar. Insert trailing edge, leading edge and upper main spar. Caution: Glue in the 1st rib at an angle of 5°. Place paneling underneath the first two ribs (1.5 mm), glue on the edge arch, add corner strips.
Strengthen the wing: Insert the box parts item 34, pull up the planking. Build the center piece, then turn the plan over and finish the left half of the wing. Glue the parts together butt, note the V-position and reinforce with GRP tape. To avoid cutting the rubber rings, a steel wire can be glued to the leading edge and aluminum or plywood reinforcement can be attached to the trailing edge.
Elevator and rudder can be made of either sheet balsa or stick construction. Prefabricate as shown in the plan, glue together and attach hinges. In order to prevent warping with full balsa, it is advisable to counter-glue the tail unit ends.
The fuselage side parts are laid flat on the plan and the longitudinal straps, like the crossbars, glued in. Turn the fuselage plan over and make the second side. Glue on the plywood reinforcement item 12. The two side parts are glued to the fuselage frames to form a box and glued together continuously with item 6. Insert the base and crossbars, glue in the plywood reinforcement item 12 at the specified nodes.
Make and glue the engine mount. Note the camber and side pull! Solder the tank together according to the sketch and glue it to the motor bulkhead with UHU-plus. Attach paneling item 36, insert dowels and provisionally stretch sash with base item 17. Glue on the prefabricated tail unit. Make the spur from parts 24 and 25 and glue it on. Bend the chassis according to the sketch and insert it. Lay building lines or bumpers. Check the functionality of the rudder and throttle.
Alternative for the fuselage: Now you have to decide whether the rear of the fuse will be exposed or covered. If it is not covered, the bridges and strips must be coated several times with tension varnish and then provided with a black or brown top coat.
Cover the wing with paper or Perlon, tack it back onto a building board to dry, supporting the ends of the wings so that there is no distortion of the surface! This procedure must also be used for tension coating..."
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Supplementary file notes
Article, in German.
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