Smithsonian Motorworks Engine Kit

Make a working internal combustion engine with this educational science kit! You will learn hands-on how a four cylinder, four-stroke gasoline engine works as you assemble this unique see-through working model. A small electric motor rotates the crankshaft so you can see everything work. This is a fascinating way to learn the basics of how a typical car engine runs! Motor color may vary. Includes a color poster with assembly instructions. You provide two AA batteries.

• Crankshaft turns with a small electric motor
• Pistons go up and down in sequence
• Camshaft turns
• Valves open and close in sequence
• Sparkplugs light up and "fire" in sequence
• Fan rotates