| 摘要 |
A gearbox adaptor (2) which can be combined with a standard vehicle gearbox to convert a standard gearbox to a sequential gearbox. Some or all of the gears (5, 6) of a standard gearbox have the synchro-hubs and cones removed and one or more gearbox adaptors (2) substituted. Each adaptor (2) includes a hub (4 ) which engages the gear shaft (3), at least one piston (7, 8) mounted within the hub (4), means for supplying fluid (16) from the exterior of the hub (4) to a first face of the or each piston (7, 8), at least one clutch means (9, 10), part of which engages the hub and another part of which engages a gear (5, 6) located on the gear shaft (3); the arrangement being such that moveme nt of the piston (7, 8) in a predetermined first direction inter-engages the parts of the clutch (9, 10) to drivingly engage the gear (5, 6) and the gear shaft (3). |
