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Otto's Oughta Run An Auto
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Otto's Oughta Run An Auto

Warning!  WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.

Build your own working four-stroke engine! In this simplified, battery-driven version of Nikolaus Otto's 1867 four-stroke engine, the pistons and crankshaft move, the fan blade spins, and the spark plugs light up to simulate timing. This Smithsonian kit, with over (100) plastic pieces, includes a small DC motor to run the engine, and an excellent 40pp instruction manual. You provide (2) "AA" batteries and an interested person eight years of age or older.

93072 MOTOR WORKS
$37.95 EACH
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