64 LEYLAND

22nd September 1972, Page 126

22nd September 1972

Page 126

Page 126, 22nd September 1972 — 64 LEYLAND

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British Leyland Truck and Bus Division, Leyland, Preston PR5 The Leyland models on show exemplify the 500 transport system which has been built around the one-piece head, overhead camshaft 500 series diesel. The rationalized production of frames, gearboxes and axles enables a range of models from 16 to 32 tons to be built from the minimum number of parts.

On the stand the normally aspirated 500 engine which produces 162 bhp at 2600 rpm and 372 lb ft at 1200 rpm powers a 12ft . wheelbase 16 tons gvw Lynx tipper and a 9ft Sin, wheelbase 26 tons gcw Lynx two-axle tractive unit. Both models use the same six-speed constant mesh gearbox and hub reduction axle of 10.6 tons capacity and all-steel raised Ergomatic cab.

The same 500 engine powers the 6 x 4 24 tons gvw 6 x 4 Bison tipper chassis. The model on show has a 14ft lin. wheelbase and double-drive bogie using 9-ton hub reduction axles. The frame of this Bison model is a rationalized 11.875in.-deep design and this same frame is used on another Leyland 6 x 4 model, the Super Buffalo. The Super Buffalo is not intended for tipper work but has been designed specifically as a 24 tons gvw haulage model which can operate with a drawbar trailer up to the maximum allowable gross train weight of 32 tons.

All Buffalo models use the turbocharged version of the 500 series engine, the 510. This engine produces 212 bhp net. at 2600 rpm and 578 lb ft torque at 1 600 rpm. An example of a Buffalo 32 tons gcw two-axle tractive unit is on show and is easily recognizable by the vertical exhaust stack behind the cab. The front axle has 6.5 tons capacity but is plated at 5 tons, the rear axle is a 10.6 tons hub reduction design. One bus chassis is on show and this is the latest model of Atlantean, the AN68, which lE a rear-engined chassis designed to sur double-deck body work. Earlier this yeai improvements were introduced which give more reliability, easier servicing and improve( safety. A modified engine /transmission padl now incorporates a fully charged 17.5in diameter fluid coupling. Previously a sealec unit, the coupling now uses a common oil tc gearbox and the angle drive in thE transmission.

The Leyland stand exhibits are completec with examples of the fixed head 500 and 51C diesel engines and a gas turbine engine.