New A.E.C. 10-cu.-yd.
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Dumper
A MODIFIED version of the A.E.C. 1-1 Mammoth Major 6 six-wheeled dumper has been introduced by A.E.C., Ltd., Southall, and it is known as the Durnptrult. The improvements incorporated are the result of operating experience with the original dumper, and new arrangements have been made for its franchise.
The Dumptruk is offered with one standard specification only, apart from alternative bodies. Many features previously supplied at extra cost are now included in the standard specification.
The vehicle is powered by the A.E.C. 11.3-litre oil engine, which develops 150 b.h.p. at 1,800 r.p.m. The unit is basically standard and has dual paper-element fuel filters and an easily accessible large-. capacity A.C. Delco oil-bath air cleaner.
A new all-constant-mesh gearbox, specially developed for dumper work, incorporates robust first, second and reverse gear trains suitable for continuous operation in these ratios. A 'ton power take-off is fitted for the tipping-ram pump drive.
The front axle is an I-section forging with 2r-in.-diameter high-tensile stub axles. and A.E.C. worm-and-nut steering with hydraulic servo is standard.. Doublereduction spiral-bevel and double-helical rear axles are employed; a third differential is not fitted, so that traction is not lost on difficult surfaces. The fully articulated rear suspension consists of two inverted semi-elliptic springs.
The chassis frame has pressed-steel side members, in. thick and 121 in. deep, the flanges being 3-1 in, wide. The frame is reinforced over the rear bogie and additional strength is provided by the tipping-gear sub-frame. A heavy-duty front bumper incorporates radiator, headlamp and sump guards,' and front and rear towitig attachinents are standard.
An all-steel-one-man half-cab of sinnple construction facilitates repair, whilst good •• all-round visibility and driving comfort have received careful consideration. Heating and . demisting equipment is standard. The cornplete.vehicle is finished in orange gloss paint..
The Dumptruk" normally has Dunlop Powergrip 15:00-720=in. (I2-Ply) single' rear. tyres and: Dunlop Roadtrak Major (14-ply):front tyres., Dunlop
Roadtrak _Maier. -(14-ply)single front and twin rear tyres can he supplied if required. Edbro:B. and E. 15DN Mark III tipping gear with a 12:41indered swashplate pump gives a 70° tip in qL14 seconds. The triple-extension slant rams are fitted in a sub-frame, and the last two stages are double acting to provide power return for the body. The tip control gives four positions: Iift, hold, float and power lowering.
Bodies can be supplied to suif various applications, but the general-purpose body is fabricated from 11-in.-thick plates with a 2-in.-thick hardwood sandwich floor, and has a capacity of 10 cu. yd. A 207-scow rear end is provided and a canopy extends to cover the complete length of the cab. Alternative widths of 7 ft. 10 in, and 8 ft. 4 in. are available to suit onor offthe-road operation.
A rock body of fin.-thick plate and 8-cu.-yd. struck capacity is also available, whilst for the bulk transport of coal an 18-cu.-yd. body in 1-in.-thick plate can be supplied. In -this case the sandwich floor is 1 in. thick, a tail door replaces the scow end, and a short cab-protection canopy is provided. With any version a detachable hydraulically controlled scraper blade is available as extra equipment.
The operating weight of the complete vehicle varies from 10 tons 6 .ewt. with the coal-carrying body to ii tons 1 cwt. with the rock body, and the maximum permissible gross weight off the road is 24 tons.
In future-, the Dumptruk will be distributed 'throughout -the United Kingdom only by Seottish Land Development Corporation, 65 Bath Street, Glasgow: R. Cripps and Co., Ltd., Abbey Bridge, Lenton, Notts: and Saville (Tractors), Ltd., Harvester House, Stratford-on-Avon, War-wicks.