Air Suspension Running gear employed is the Dyson Aerciride tandem-axle
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air-suspension bogie, which is fitted to a pressed-steel sub-frame as a unit. Dunlop disc brakes are used, operated by a two-line airhydraulic system. Tyres are 9.00-20 x 12-ply, and the landing gear is the twinwheel, aluminium-alloy, vertical-screw type incorporating a two-speed gearbox.
Overall dimensions of the Bass Aerovan are 27 ft. 8 in. long, 8 ft. wide and 12 ft. 3 in. high, giving interior dimensions of 27 ft. 4 in. x 7 ft. 81 in. and a height of 7 ft. 2 in. at the sides. Roller shutters are fitted at the loading apertures at the rear and on both sides of the body, and a number of translucent panels are incorporated in the bowed roof.
The sides and radiused front end are double skinned—the interior skin being of heavy-gauge light alloy, with the outer skin of lighter gauge panelling. Ryland Garage, Ltd., the suppliers of the units, laid a special floor to the body. This is of reinforced plastics impregnated with carborundurn powder in the upper face to give a non-skid surface.