The finished foam core clipped back edge and instead is glued with epoxy resin of the pine rack. Further, on the upper and lower wing surfaces at a distance of 50 mm from the leading edge (30% of chord) are cut with grooves of triangular cross-section under the beam flange. You can use the razor-sharp knife or Bong that is much better, with a special tool, the device which is shown in the figure. Beam flange — pine slats of triangular section to produce them, by cutting on a mini”circular saw” diagonal slats of square section or sostragivaja part of Reiki a miniature plane. Glue shelves are all the same “epoxy”.
From the thus prepared consoles is going to a single wing, which is used for set between the shelves of the spar bridge. The latter is made of two plywood plates with chamfers sawed, glued so that it formed two groove type “dovetail”, which provides a rigorous docking consoles. The rear edge of the consoles glued “on condition”. At least the wing glued two hollow fake ending.
Trim the foam surfaces, in principle, can only consist in the gradual polishing of the skin decreasing grain size, however, it is better after this surgery primed the foam with epoxy glue, after curing again sanded the surface and painted them with enamel of a suitable color.
Before running the model in the version of the glider should choose the alignment, placing the channel under the rubber motor any cargo. Alignment should be 25-30 percent of the length of the SEA wing.
Manufacturer foam core wing:
I — socket housing (PCB or Teflon); 2 — connection terminal (copper or brass, sheet s2); 3 — a cutting wire (nichrome); 4 — screws; 5 — template (duralumin, sheet s2); 6 — processing core (packing foam); 7 — two-wire cord; 8 — pin (part of the nail); 9 — press luchkovoj saws
Strug for cutting triangular grooves on the core of the wing under the beam flange (bottom right — the use of Struga):
1 — cutters (part of the saw blade); 2 — holder (wood); 3 — base (wood)
If you run the model it would be cool to swoop down, you should bend the elevators up a bit when you pitch up (climb with the loss of speed) down. The trajectory is properly adjusted models should be a straight downward line. To launch the glider from the rail is required at the bottom of the fuselage to attach the hook from the wire.
For the conversion of the airframe, the plane will need an air screw. Make it from a suitable lime bar in strict accordance with the theoretical drawing. The concave parts of the screw stesyvajut miniature tsiklej or pieces of glass of suitable curvature. After finishing, a screw balance, which fits over the knitting needle, placed on two horizontal steel line. A heavier blade will pull it down, it should soshlifovat skin. Ambulancewoman right screw, if it is to swing must stay on the knitting needle in any position.
The finished screw is covered with several layers of varnish parquet. The screw shaft is curved from a steel wire in diameter of 1,5—2 mm. Between the bushing front boss of the fuselage and screw set brass smooth washer.
Teoreticheski drawing of the propeller
It is also necessary to prepare a rubber motor. To make it, it between two nails hammered into a suitable Board at a distance of 650 mm from each other, wound round model aircraft tires (its mass should be within 35-40 g). On the front and rear ends of the rubber harness with solid sewing threads are made loop under the hook of the screw shaft and the rear hook.
After the manufacture of the rubber motor should be washed with soap and water, dry and lightly grease with castor oil. But between flights and store in a sealed plastic bag.
Adjusting the first flights are made in the mode of the airframe, but mounted with rubber motor. To achieve optimal trajectory planning model, by bending the elevators in one direction or another.
First engine runs are made with the twist of the rubber motor at 100-150 rpm. If the flight model is stable, then the twist of the rubber motor should be gradually brought to full before the second “sheep” along the entire length of the rubber motor.