ELONGATED SYNCHRONISER HUB AND SYNCHRONISER RING FUNCTIONING WITHIN AN EXTENDED SYNCHRONISER HUB amp; CATCHER TEETH ARRANGEMENT

摘要

A synchroniser clutch assembly comprises a synchroniser ring (231) and shift sleeve (202). The synchroniser ring (231) has a plurality of synchroniser teeth (237) extending radially outwardly from an outer surface thereof which are arranged into six circumferentially extending banks equi-angularly distributed around the outer periphery of the ring (231), the circumferential extent of each bank being less than the circumferential extent of the space between neighbouring banks. The shift sleeve (202) has a first plurality of axially extending teeth (223b) formed on its inner circumferential surface having a first axial length and a second plurality of axially extending teeth (223a) formed on its inner circumferential surface having a second axial length which is shorter than said first axial length. The second plurality of teeth (223a) are formed into six groups each having the same number of teeth, said groups being equi-angularly distributed around the hub, and a plurality of said teeth (223b) having said first axial length being disposed in the regions between said groups.