vedava ja veetava ratta (või võlli) pöörlemiskiiruste suhe i = ω1/ ω2 = n1/ n2 , mis aeglustuvates ülekannetes võrdub ülekandearvuga
fundamentaal parameeter of a mechanical drive that is defined as the ratio of its driving n1and driven n2shaft speeds of rotation or angular speeds i = n1 / n2 = ω1/ ω2
If i < 1 the mechanical drive is called overdrive, its member is called a multiplicator and the transmissioon ratio is also called speed increasing ratio.
