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A. C. Cars Ltd.

This British firm have previously produced railcars for the Southend Pier Railway. The proposed design of railbus provides for a central driving control at each end, air operated central sliding doors on each side with central luggage space and outward facing seats in addition to seats at the ends of the vehicle. The total seating capacity of the underframe is by means of rubber shear compression units specially designed for mounting at an angle on each side of the axleboxes.

The body is suspended at each corner of the underframe by means of special rubber springs acting in shear and compression with hydraulic dampers to prevent undue oscillation.

An air operated normal type of clasp brake is provided, together with lightweight rolled steel disc wheels and roller bearing axleboxes.

The power unit comprises a B.U.T. 150 h.p. underfloor diesel engine of a type similar to that used on the diesel multiple unit sets giving a maximum speed of approximately 55 m.p.h.  Heating is by means of an oil combustion unit.

Drawgear and buffers are mounted on the body sub-frame and are only intended as a means of towing the vehicle in an emergency.

British United Traction Ltd.
  (Park Royal Vehicles)

This design is the British version of the German Uerdingen railbus and retains the frame and body suspension principles of the latter, in which the body has a four-point spring mounting system independent of the underframe as described in the notes on the W.M.D. railbus.

The body is of light alloy and steel construction arranged for left hand driving control at each end. Centre sliding doors are incorporated on each side with a central vestibule for luggage. Fixed outward facing seats are provided, giving a seating capacity for 50 passengers and 20 standing. Heating is provided by an oil combustion heater.

The power unit is a B.U.T. 150 h.p. horizontal engine, of a type similar to that in use of the diesel multiple unit stock. Maximum speed will be in the region of 50-55 m.p.h.  An air brake is employed operating the normal type of clasp braking.

Spring type bumpers are fitted at each end, together with a towing hook for emergency purposes.

Bristol Commercial Vehicles Ltd.

The design of the lightweight body of this vehicle incorporates the principles of Bristol/E.C.W. omnibus design. Arranged for left hand driving control at each end, the vehicle has a seating capacity for 54 passengers, with an arrangement of outward facing seats and 20 standing passengers. Central sliding doors are provided on each side with a central area for luggage. Heating is provided by an oil combustion type heater.

Metalastik type rubber shear-compression units are utilised for the suspension of the frame. Each axle is mounted on a seperate sub-frame, spring from the main frame, and anchored by a radius arm. The attachment of the subframe to the axle anchor bracket also incorporates a Metalastik rubber spring unit.

The power unit employs a Gardner type horizontal engine of 112 m.p.h. giving a maximum speed of 55 m.p.h. A spring type of wheel embodying a pneumatic cushioned tubeless arrangement encased in a standard section steel tyre but a normal steel disc wheel can be fitted as an alternative.

Air assisted hydraulically operated disc brakes are fitted on all wheels.

Light type drawgear and buffers are also fitted at each end of the vehicle.