Meaning of gear ratio | Babel Free

Definitions

The ratio of the speeds of rotation of two gears, such as any pair that mesh and, especially, the initial and final gears in a gear train (whose relationship incorporates all the intermediate ones).

Equivalents

Examples

“Two versions exist⟳ of the new locomotives, for passenger and for freight work⟳ respectively, the technical difference between the two lying in the gearing of the bogies; the passenger locomotives, in light⟳ green and pearl grey livery, have⟳ a 25:64 gear ratio to haul 12-coach, 450-ton trains at 87 m.p.h. on the level, and the freight locomotives, in the famiiar Italian brown livery, have⟳ a 20:69 gear ratio enabling them to move⟳ 1,500-ton freights on the level at a consistent 53 m.p.h., with a maximum of 68 m.p.h.”

CEFR level