Build two serviceable planes. The larger one, which should be carried in the rear, should measure about twenty-four inches by eight, and the front plane twelve by four inches. Since your frame is very light and strong, there is no need to economize weight. By carrying the braces running from the cross sticks well out on the stick, you can provide a broad support for the planes. Tie the wings on the motor base with strands of rubber. In landing they will then give enough to save a bad smash.
One of the best models of the year, built by John Caresi
An excellent model, showing careful attention to details. Built by L. V. Brooks
The propellers are mounted by passing the axles through holes drilled through the center of the rear stick about one inch from the ends. The rubber strands may be simply passed around the front stick and tied in position, or may be looped about a hook inserted in the stick. Use a fairly high pitch propeller, since the base will carry a powerful motor. Select some simple form of skid, for the model will be comparatively light, say within ten ounces.
A ONE-PLANE MODEL.
Interesting experiments have been made this season by altering the angle at which the main planes are set to the motor base. The theory of these designs is, of course, that the resistance offered by an entering angle is less than that of a straight edge. In some models, the main planes are carried backward until the rear tips are on a line with the propellers. The model is driven tail first by twin propellers. The planes are besides set at a slight dihedral angle so that the angle of incidence is greater at the ends.
A rectangular base is suggested, with a central stick. The planes, which may be either flat or cambered, are attached to the central stick and slightly raised by inserting strips of wood above the outer edges of the motor base. In this way, it is possible to fix them rigidly. Wire braces running from the outer ends to the rear of the motor base will add to its strength. The angle of the wings to the motor base may be altered to suit conditions. A plane of high aspect ratio works best in this position.