A variator comprising: an input race and an output race, the input and output races (10, 14) being coaxially mounted for rotation about a variator axis, and a toroidal cavity being defined between the races (10, 14); a plurality of rolling elements (20, 22) disposed between and being in driving engagement through a traction fluid with the input and the output races (10, 14) at respective contact regions, each rolling element (20, 22) being mounted on a carriage assembly (24, 26) for rotation about a rolling axis, each rolling element (20, 22) being free to pivot about a tilt axis, the tilt axis passing through the rolling element (20, 22) perpendicular to the rolling axis, and intersecting the rolling axis at a roller centre, whereby a change in the tilt angle causes a change in the variator ratio being the ratio of rotational speeds of the races (10, 14); characterized in that each carriage assembly (24, 26) includes a stem (28, 30) and a fork (32, 34), and each fork (32, 34) carries a respective rolling element (20, 22) such that the rolling element (20, 22) can rotate on a bearing for rotation about the rolling axis that extends through its centre, each fork (32, 34) being rotatable on its stem about the respective tilt axis, and each carriage assembly (24, 26) is mounted such that the tilt axis of each stem (28, 30) is inclined to a plane perpendicular to the variator axis at an angle (α); the variator further comprising a control assembly that is adapted to provide control actuation of the variator by translational movement, the control assembly comprising a slider carried on a support, wherein the slider is adapted for reciprocal linear movement relative to the support so that the slider is able to travel back and forth along the support in a direction perpendicular to the variator axis and in a plane perpendicular to the variator axis, and the support has reaction surfaces (50, 52) that are each inclined at the angle (α) to the centre plane of the variator perpendicular to the variator axis; wherein the slider is connected to each carriage assembly (24, 26) at a location radially outward of a virtual cylinder which is parallel to the variator axis and tangential to the periphery of the larger of the input race and output race (10, 14); wherein each carriage assembly (24, 26) is also coupled to the control assembly at respective reaction points where each reaction point comprises an arcuate slot (60, 62) that extends into a respective reaction surface (50, 52) of the support; and the stem (28, 30) of each of carriage assembly (24, 26): (a) carries a projecting reaction pin (64, 66) that extends into a respective arcuate slot (60, 62), in which it is a close sliding fit sufficient to allow free sliding engagement of each reaction pin (64, 66) in its slot (60, 62); or (b) comprises rollers to provide smooth engagement and a rolling engagement with the slot (60, 62). an input race and an output race, the input and output races (10, 14) being coaxially mounted for rotation about a variator axis, and a toroidal cavity being defined between the races (10, 14); a plurality of rolling elements (20, 22) disposed between and being in driving engagement through a traction fluid with the input and the output races (10, 14) at respective contact regions, each rolling element (20, 22) being mounted on a carriage assembly (24, 26) for rotation about a rolling axis, each rolling element (20, 22) being free to pivot about a tilt axis, the tilt axis passing through the rolling element (20, 22) perpendicular to the rolling axis, and intersecting the rolling axis at a roller centre, whereby a change in the tilt angle causes a change in the variator ratio being the ratio of rotational speeds of the races (10, 14); characterized in that each carriage assembly (24, 26) includes a stem (28, 30) and a fork (32, 34), and each fork (32, 34) carries a respective rolling element (20, 22) such that the rolling element (20, 22) can rotate on a bearing for rotation about the rolling axis that extends through its centre, each fork (32, 34) being rotatable on its stem about the respective tilt axis, and each carriage assembly (24, 26) is mounted such that the tilt axis of each stem (28, 30) is inclined to a plane perpendicular to the variator axis at an angle (α); the variator further comprising a control assembly that is adapted to provide control actuation of the variator by translational movement, the control assembly comprising a slider carried on a support, wherein the slider is adapted for reciprocal linear movement relative to the support so that the slider is able to travel back and forth along the support in a direction perpendicular to the variator axis and in a plane perpendicular to the variator axis, and the support has reaction surfaces (50, 52) that are each inclined at the angle (α) to the centre plane of the variator perpendicular to the variator axis; (a) carries a projecting reaction pin (64, 66) that extends into a respective arcuate slot (60, 62), in which it is a close sliding fit sufficient to allow free sliding engagement of each reaction pin (64, 66) in its slot (60, 62); or (b) comprises rollers to provide smooth engagement and a rolling engagement with the slot (60, 62).