Plate V.
The plane forming the tail is almost the same in all respects save that of size as the forward main plane.
A small vertical fin 3 inches wide and 3 1/2 inches deep is placed below the tail plane, in line with the "backbone" to act as a keel or rudder and hold the machine to a straight course.
The covering of the planes is China silk or bamboo paper coated with bamboo varnish.
The bearing is made out of sheet brass bent into the shape shown and fastened to the tube by lashing with a wire.
The propeller should be 6 inches in diameter. One or two glass beads placed between the bearing and the propeller will reduce the friction.
The motive power consists of 8 strands of 3/32 x 3/32 inch rubber connected at one end to the propeller and at the other to a hook at the rear end of the aluminum tube.
The machine is provided with two piano wire skids to protect the propeller in landing.
If the aeroplane tends to rise too abruptly when in flight, bend the rear edge of the main planes up. If on the contrary, it dips or dives, bend the rear edge down.