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MODEL B.

[[image - front view drawing of the Model B Wright Flyer]]

DIMENSIONS

Spread of planes 39 feet. Depth 6 feet 3 inches. Length fore and aft 29 feet. Height over all 8 feet. Length of propellors 8 1/2 feet. Weight 800 pounds. - - - Price $5000.00

The wonderful range of control of The Wright Flyer in both lateral and fore and aft balance is obtained by the simplest and most direct application of the principles invented by the Wright Brothers. The entire machine is governed by two levers; the first of which, when moved forward or backward, warps the wings and at the same time turns the rear vertical rudders permitting the operator to maintain his balance without changing his course, regardless of the direction of the wind. The vertical rudders can also be operated independently to turn to the right or left by simply twisting the end of the lever with a wrist motion. The second lever controls the rear horizontal rudder by which the direction of flight upwards and downwards may be governed. The speed of the engine is controlled by a foot pedal and the power can be shut off instantly at any time by pulling a cord within easy reach. The controlling power is transmitted entirely by steel cables and nickel steel chain sections wherever they pass through pulleys. The entire mechanism exposed so that even a casual inspection suffices to ascertain the condition of all working parts.

The bi-plane type permits of double trussing throughout, offering a strength obtainable in no other design and the efficiency of the planes and propellers is so high that there is no need to sacrifice strength for lightness.

All machines are equipped with shock absorbing wheels for starting and landing. Our Model B is designed to offer the greatest maximum of safety and reliability. This aeroplane carries two persons comfortably and the levers are duplicated so either person can operate the machine. It is a refined type of The Wright Flyer used this year by our Exhibition Department. 

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THE WRIGHT MOTOR

[[images - two drawings of the Wright Motor showing both sides of the motor]] 

Dimensions, four-cylinders, 4 3/8 inch bore x 4-inch stroke, 30-55 h.p., weight 180 pounds.

The Wright Motor, like the aeroplane and propellors is a development of years of experimentation by the Wright Brothers, while the rest of the world was busy with a motor for automobiles. Here again no effort has been made to reduce weight at the expense of safety. Extreme simplicity offers the greatest reliability. There probably has never been built a practical four-cylinder motor with fewer parts. The body is cast in aluminum and the cylinders are cast individually in gray iron. The nickel steel crank shaft is cut from the block, as is also the cam shaft, which operates the exhaust valves. The intake valves are automatic. Ample lubrication of bearings and cylinders is obtained by a positively operated pump. The cylinders are water jacketed with aluminum and a centrifugal pump furnishes effective circulation. As this motor must operate in constantly varying altitudes, the gasoline is supplied directly to a mixing chamber without a carburetor, by means of a gear pump and injector which controls the amount of gasoline supplied to each cylinder in direct ratio with the speed of the engine. Ignition is provided by the Mea high tension magneto, offering an exceedingly wide range of control.

The power is transmitted to the twin propellors by means of nickel steel roller chains and the propellor shafts are of chrome nickel steel. Hess-Bright ball bearings are used.