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Meshing gears rotate in opposite directions. The gear ratio (teeth₁/teeth₂) determines speed and torque. More teeth = slower but more torque. Fewer teeth = faster but less torque. Gear trains can multiply speed or force.
Mechanical engineering relies on mechanisms — gears, cams, and linkages — to transmit and transform motion in machines from clocks to industrial robots. This simulator covers gear trains for torque and speed conversion, and four-bar linkages for converting rotary motion into complex coupler-curve paths. Changing tooth counts or link lengths immediately updates the kinematic output.
gear ratio · torque · four-bar linkage · kinematic analysis · mechanical advantage · velocity ratio
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