It’s a simple rack-and-pinion design that’s suitable for light loads and comes in two sizes, supporting both the 9-g micro servos and the larger, more powerful version. Each design has a ...

Part of a rack-and-pinion steering system, the rack is a bar parallel to the front axle that moves left or right when the steering wheel is turned, aiming the front wheels in the correct direction.

A pillar drill with a rack and pinion arrangement The speed at which a gear or wheel rotates is measured in revolutions per minute (rpm). Many cars have a rev counter that tells the driver how ...