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ADDITION TO DUMPTRUK RANGE
Page 47
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A NEW Dumptruk with a capacity of 15 cu yd. has been added to its existing range by A.E.C. Ltd. Known as the A.E.C. 1 100 Dumptruk, this latest design resembles the heavy-duty 18-cu,-yd. model which has been in production for a number of years and, indeed, it has basically the same axles and cab. It is, however, a completely new product in other respects, although the power unit is a normally asp:rated version of the turbocharged engine used in the 18-cu.-yd. Dumptruk, thereby giving a measure o/ engine-component interchangeability ,,when both i.ehicles are used in the same fleet.
The 1100 Dumptruk has a gross-weight rating of 40.7 tons, and complete with standard general-purpose 15.4-cu.-yd body its unladen weight is 20.2 tons. leaving a payload allowance of 20.5 tons. The vehicle has a wheelbase of lift. 6 in.. and its overall height unladen is 12 ft, the loading height being 10 ft. and the maximum tipped height 21 ft. 2 in. The maximum width over the spillboards at the rear is 11 ft. 5.5 in.
An A.E.C. AV1100 17.75-litre sixcylinder diesel is standard, this unit having a gross output of 300 b.h.p. at 1,900 r.p.m. and a gross torque of 966 lb. ft. at 1,300 r.p.m. The drive is taken through an 18-in.-diameter single-dryplate clutch with air-assisted operation to a Fuller 10-speed gearbox, this having high ratios of 4-97, 2.99, 1-75, 1-0 and 0-64 to 1 (reverse. 3-83 to I), and low ratios of 6.68, 4.01, 2-35, 1-34 and 0-86 to 1 (reverse. 5.15 to 1). The driving axle is a Kirkstall double-reduction assembly with spiral-bevel primary gearing and hub-mounted epicyclic secondary trains. The axle casing is a one-piece forging. and the hubs are mounted on roller bearings. The overall ratio is 15.65 to 1.
The front axle has a forged I-section beam with 4-5-in.-diameter stub axles and 2.75-in. kingpins tined v1/4 ith taper-roller
thrust bearings. Slipper-ended semielliptic leaf springs are used at both axles, location being given by rubberbushed radius arms, and the front and rear spring widths are 4,25 in. and 6-0 in, respectively. All the brakes have a drum diameter of 19.5 in., and the total
frictional area is 896 sq. in. The air brakes can be actuated either by pedal or hand valve, whilst there is a multipull handbrake acting on the rear brakes only. The cam and double roller steering has a hydraulic servo.
Rolled steel joists are used for the side members, which have a maximum depth of 14-33 in, and are braced by one fabricated bridge cross-member and three 8-in.-diameter tubular cross-members. A 78-gal. fuel tank is carried transversely behind the cab, and the electries are 24v,, with four 174 a.h. batteries. The standard lyres are 16.00-25 (24-ply), fitted on 11.25-25 demountable rims.
The 1100 Dumptruk has left-hand drive, and the three-quarter-width cab, of all-steel construction, is offset to the left to give good vision. Cab equipment includes heater and demister and a fully adjustable bucket-type driving seat. The standard body, which gives a heaped capacity of 19.5 cu. yd., has a sandwich floor, with a 0.3125-in, bottom plate covered by 1.5-in, hardwood and a 0.375-in, steel wearing plate. An Edbro twin-ram three-stage tipping gear is employed, giving a 70° angle of tip in 12 seconds.
OUTPUT and EXPORT QUTPUT and export of British goods vehicles in May were well up on last !, ear's equivalent totals, according to Board of Trade figures just. issued. But product ion and exports of passenger -,'chicks declined. Details are:—