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.

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 ...

Credit: Stadler. The Matterhorn Gotthard Railway (MGBahn) and Stadler have unveiled what they claim to be the world’s “fastest” rack-and-pinion railway. The new “v+” rack-and-pinion braking system, ...