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Unofficial Home of Old Simplicity & Allis-Chalmers Garden Tractors

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    NOW with exclusive Two-Speed Axle!
    High and Low Speeds -- Forward and Reverse -- Full 4 HP



           Just one year ago, Simplicity startled the power garden industry with this new look in riding power units.   The Wonder-Boy was new, revolutionary . . . an exciting step forward.   But even then, people saw in it the answer to their lawn needs.

            Today, Wonder-Boy is a proven-performer, owned and enjoyed by thousands of Americans.   Young and old alike have found it the last word   -- simple to use, comfortable, safe and a trouble-free performer.

            Wonder-Boy has, literally, changed the lawn maintenance habits of America.   With it, you can mow lawns to golf-green smoothness without scalping . . . mulch leaves . . .   haul heavy loads . . . roll lawns   . . .     grade . . . plow snow!   Its rear-mounted engine puts heat and fumes behind you . . .   its simple Joy Stick control brings smooth, instant response . . .   and its exclusive Two-Speed Axle provides high and low speeds.

            Try Wonder-Boy yourself.   A few minutes aboard and you'll want this riding power unit on your grounds -- city or country.   For no other unit can do so much for you . . . so quickly and so well.  


    Engine:   4 cycle, 4 HP, single cylinder, air cooled heavy duty cast iron. Recoil starter.

    Clutches:   Simplicity "soft action," spring loaded idlers.   Conveniently located controls.

    Axles:   "Duomatic" Two Speed Rear Axle, exclusive planetary design has two speeds forward and reverse.   Truck type differential.   Front axle "floats" 8" horizontally -- 16" vertically.

    Steering:   Complete control of unit concentrated in single "Joy Stick."     Safety spring-loaded front wheel spindles.   Ball joint suspension on steering rods for ease of handling.

    Tires:   Fully pneumatic, knob traction tires, 4.00 x 8, 2 ply, steel disc wheels.

    Frame:   Electrically welded steel.   Center frame of heavy tubular steel.  

    Optional Equipment:   12 Volt electric starter with 20 amp. hr. 12-volt battery.


    [Source:   Simplicity Lawn & Garden Power Equipment catalog, 1957, courtesy of Iain McCowan}

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