Aluminium Dumper Bodies Give 25-cwt. Payload Increase
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IN the large earth-moving project I. associated with the construction of the new British Railways marshalling yard at Tinsley, near Sheffield, dumpers with aluminium bodies are being employed by Lehane, Mackenzie and Shand Ltd., and Shellabear Price Ltd., which provide a payload increase of 231 cwt. compared with a vehicle having a standard generalpurpose body. Produced by G. E. Neville and Son Ltd., Mansfield, Notts, from Noral alloys (supplied by Alcan Industries Ltd., Banbury) 12 14-cu.-yd. bodies are mounted on Forlen DumpTruck 20-short-ton (40,000 lb.) chassis, whilst six 12-cu.-yd. bodies are based on A.E.C. Dumptruck chassis with a rating of 30,000 lb. The bodies have now been used on this arduous site work for over 12 months, and so far have given very satisfactory service. A total of 26 bodies of the same type have been produced by the Neville company.
The vehicles on the marshalling yard project normally operate on short hauls and make up to 180 trips in a 22-hour working day, so that the daily nominal increase in vehicle payload is 212 tons. It is also claimed that the lighter bodies reduce empty-running costs.
In another case the operator of vehicles fitted with the same type of dumper body claims a saving in fuel consumption up to F21 mpg,, the evaluation of which was derived from comparative tests over two ,years of identical A.E.C. chassis, one u.30 fitted with a Neville body and one with an all-steel equivalent.
The bodies are a scaled-up version of the Neville standard body with 15-in. roll-formed extruded U sections haying a general thickness of 0-30 in. Stiffening ribs are an integral part of the sections, the outside flanges of the planks being jig-drilled for assembly with bolts. A dove-tail register is incorporated in the
extrusion and sealing is provided by a circular rubber cord inserted in recesses in the flanges. • The lifting frame of the Tinsley vehicle is of steel (an aluminium frame may be specified) and the body is directly attached to the .frame with bolts, which permit considerable flexing of the structure during impact-loading and transit over uneven surfaces. Damaged planks can be easily replaced. P.A.C.B.