Vehicle transmissions

In an epicyclic change-speed gearing comprising at least three epicyclic gear sets drivingly connectable between an input and an output, each gear set comprising a sun gear, a planet carrier, an internally toothed ring gear and at least one planet pinion which meshes with both the sun gear and the ring gear of its respective gear set and is itself mounted for rotation about its axis in said planet carrier which is mounted for rotation about the common axis of the sun gear and ring gear of its respective gear set, in which the planet carrier of the first gear set is rotationally secured to the ring gear of the second gear set, the input is connected to the sun gear of the first gear set, the output being taken from the planet carrier of the first gear set, and means are provided for holding at least one of the ring gear of the first gear set and the sun gear of the second gear set against driving reactions, the improvements in which the ring gear of the third gear set is rotationally secured to the planet carrier of the second gear set, the planet carrier of the third gear set is rotationally secured to the sun gear of the second gear set, and further holding means are provided for holding the sun gear of the third gear set.