Abstract: A motorcycle having an enclosed or substantially enclosed body and respective support members at the sides of the motor cycle and movable downwardly relative to the body into engagement with the ground, wherein each support member is in the form of an open-topped enclosure for receiving a lower portion of the respective leg of the rider with a footrest extending into such enclosure.

Abstract: A motor cycle frame comprising a rigid transverse bulkhead disposed between and interconnecting a front cantilever structure and a rear cantilever structure, the bulkhead constituting a mounting for an engine and a gearbox. The bulkhead comprises an annular or inverted U-shape plate or a rigid box-form structure and the front and rear structures each comprises a rigid housing or a rigid structure of interconnected tubular members and enclosed within a faired housing. The front structure has mounting means for a front wheel, the bulkhead has mounting means for a rear wheel and the rear structure has mounting means for a suspension for the rear wheel and mounting means for a seat.

Abstract: A head, neck and chest protector, for example for a motor cyclist, comprising a rigid outer shell which comprises a head section formed wholly to enclose the head of the wearer and having a transparent part at the front thereof, a neck section rigidly connected to the head section and formed to surround the neck of the wearer and a chest section rigidly connected to the neck section and formed to extend over the upper chest of the wearer, and a helmet for fitting on the head of the wearer which is located within a cavity in the head section of the outer shell, the cavity being larger than the helmet so that the latter is movable therein and the helmet being suspended in the cavity by a plurality of elongate elements which are attached to the helmet at different locations over its outer surface and are connected to an inertia reel adapted normally to permit free movement of the helmet relative to the outer shell but being responsive to movement of the helmet at an acceleration above a predetermined value to br