Inside an inline-six
Explore a detailed cutaway: six pistons, a counterweighted crankshaft, twin cams and 24 moving valves.
All explanations
8 experiments shown
Why gears change everything
Discover the trade between turning speed and turning force.
How ball bearings work
See why the cage turns more slowly than the shaft—and why a ball has two kinds of motion.
Inside a robotic actuator
Take apart a complete brushless actuator. Follow power through the motor, planetary gears, bearings and output hub.
Steering with a jet of water
Trace water from the intake through an impeller and stator, then see how a nozzle and bucket redirect its momentum.
Inside a rotary engine
Preview · Open the housing and follow three moving chambers around an orbiting rotor.
A jet engine's energy relay
Preview · Trace the core flow through a compressor, combustor, turbine, and nozzle.
Eight pistons. Four crankpins.
Preview · Open a 90° V8 and follow the two rods sharing each of its four crankpins.