Chieftain Super Six as a 4x4
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AFOUR-WHEEL-DRIVE version of the Chieftain Super Six has been announced by Albion Motors Ltd. The design is based on the current Chieftain Super Six but the four-wheel drive equipment has been developed and is built into the chassis by Scammell Lorries Ltd. who are co-operating with Albion in the venture.
The front axle is in effect a steering version of the Albion hub-reduction rear axle used in the model and because the same epicyclic gears are used at all four hubs and the differentials are the same, components from the two units are interchangeable. Ratios of 5.555, 6.25 and 6.933 to 1 are available.
As on the 4 x 2 model, a Leyland 0.370 six-cylinder diesel engine is used and this develops 106, b.h.p. at 2,200 r.p.m. and a maximum torque of 272 lb. ft. at 1,600 r.p.m. The drive is through a 14-in. chdch to an Albion five-speed constant-mesh main gearbox with an optional six-speed overdrive, ratio available. From the gearbox the drive goes to a centrally mounted transfer box which is used. to select twoor fourwheel drive. The transfer box also has reduction gearing of 2.04 to 1 and this can be selected when four-wheel drive is in use. Springs on the 4 x 4 are 4 ft. 6 in. long all round by 3 in. wide at the front and 3.5 in. at the rear, and hydraulic dampers are fitted at the front axle. Power steering is standard, a Burman recirculating-ball unit being assisted by a Hydrosteer unit acting on the drop arm; hydraulic pressure is supplied by an engine-driven Hobourn-Eaton pump. Braking is by two-leading-shoe units all round and the total braking area is 615 sq. in. Brake actuation is by an air-assisted hydraulic system.
The cab used on the model is the all-steel Motor Panels unit used extensively by both Leyland and Albion before the introduction of the latest Ergornatic cab. It is doubleskinned at the front and the forward-entry doors are double sealed against draughts.
Standard tyre equipment is 8.25-20 (14 ply) or their equivalent with 9.00-20(12 ply) the alternative and 11.00-20 single tyres all round can be fitted. The last tyres are to be shown on an example of the model to be featured at the Commercial Motor Show and according to the tyre equipment and the type of work on which the vehicle is to be used the maximum gross weight rating of the chassis is from 9 tons to 11 tons.