Noun
English Wikipedia has an article on:gear ratioWikipedia
gear ratio (plural gear ratios)
The ratio of the speeds of rotation of the initial and final gears in a gear train.
How is gear ratio related to a gear train? Source: Internet
It also features new control logic and expanded gear ratio coverage, which helps reduce noise and fuel consumption while improving drivability and responsiveness. Source: Internet
Maximum payload is about 5kg with the 34:1 gear ratio. Source: Internet