It consists of a circular gear (pinion) meshing with a straight gear (rack), commonly used in steering mechanisms and machine tools. This uses a screw-like 'worm' gear that meshes with a larger ...

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, ...