• bowling pin loading and spotting mechanisms (video)
• dual overhead camshaft engine
• Ducati motorcycle desmodromic (closed form) cams (animation)
• valve float and spring surge - 1000 rpm vs. 6000 rpm (high-speed video)
• IC engine four-stroke cycle
• IC engine combustion cycle (animation)
• IC engine four-stroke cycle (3.4 MB video)
• IC engine crankshaft, camshaft, pistons, and valves (animation)
• IC engine crankshaft, camshaft, piston, and valve layout
• V-8 engine block (photo)
• V-8 engine camshaft (photo)
• V-8 engine cylinders and pistons (photo)
• V-8 engine pushrods (photo)
• various cam followers with a cam shaft (photo)

See also:

• engine animations
• high-speed video of engine valve springs driven by cams
• a complete list of linkage and cam applications at: Mechanism Applications