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New Atkinson 6 x 4 Dumpers for S.A.R.

2nd May 1958, Page 66
2nd May 1958
Page 66
Page 66, 2nd May 1958 — New Atkinson 6 x 4 Dumpers for S.A.R.
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HEAVV-DUTY 6 x 4 9-10-cu.-yd. dumpers are being built by Atkinson Vehicles, Ltd., for South African Railways. They are powered by Cummins HU-6-B six-cylindered oil engines which develop 158 b.h.p. at 1,800 r.p.m. and are used in conjunction with 18-in.-diameter single-dry-plate clutches and Z.F. AK6-75 six-speed constant-mesh gearboxes.

Four-spring suspension is provided at the rear bogie, giving sufficient articulation for dumper operation, and the overhead-worm rear axles have 81-in, centres and a reduction ratio of 8.25 to 1.

Bendix Westinghouse split-circuit air brakes are fitted and Manes cam-anddouble-roller steering, with Adamant hydraulic servo, is employed. The chassis frame is of 14-in. by 6-in, rolled-steel joists and the tipping-ram cradle is welded in position. The body can be tipped to an angle of 60°. All-steel halfcabs arc being provided by the Atkinson subsidiary company in South Africa, where the bodies will also be built.

The front wheels carry 11.00-22-in. tyres, whilst the single rear wheels have 14.00-20-in. equipment.

The vehicles for South Africa have forward control, but normaland forward-control designs are to be built for the home market and overseas. A Kirkstall two-spring bogie can be fitted if specified in place of the Atkinson fourspring layout.

DUMPERS FOR JAPAN

DUMP trucks have been added to the list of goods which may be exported to Japan in the current year (ending March 31). A trade agreement covering this period was signed in London last week by Cdr. A. Noble, Minister of State for Foreign Affairs, and Mr. T. Nakagawa, Japanese Charge d'Affaires.