Mechanism LabMechanism Lab
Interactive mechanisms, one at a time. Each one moves exactly as the engineering formulas say, and you can change it with sliders. They match our short videos.
Gear ratioPick tooth counts and stages; watch speed fall and torque rise.Clock motion workThe hidden gears that turn the hour hand 12× slower than the minute hand.
More coming: planetary gears, escapements, pistons and cranks, linkages, cams, pulleys and orbits.