Bulk body with injection moulded sides
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• Lightweight dropsides of colour-impregnated injection-moulded glassfibre are a special feature of a 40 cu yd bulk-tipper body built by Truck Engineering Ltd, Oldbury, on an M and G 32-ton-gross skeletal semitrailer for R. Dunne Ltd, of Swindon, to carry grain in one direction and coal in the other. The sides have a core of polyurethane foam and are claimed to provide efficient sealing against the egress of the material carried. The body is equipped with a total of eight sides, having hinged self-sealing extensions.
Later bodies will have a tailboard and posts of the same form of construction instead of aluminium, which is used for the longitudinals, cross-members, floor and headboard of the Dunne body. The sides have a height of 311 and are fitted with 2ft extension boards; the body is tipped by an Edbro twin-ram gear. The tractive unit is an AEC Mandator and the unladen weight of the outfit is about 11 tons 9cwt, the payload being over 20 tons lOcwt.
The accuracy with which the sides are produced, and the absence of bolt or rivet heads, affords a smooth exterior as well as interior surface. Body length is 2811.