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Cummins L10 gives more bite to Tiger

4th April 1987, Page 20
4th April 1987
Page 20
Page 20, 4th April 1987 — Cummins L10 gives more bite to Tiger
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• Leyland's Tiger coach chassis is to be offered in the UK with a 216kW (290hp) Cummins L10 horizontal engine, making it the most powerful coach chassis ever built in Britain. Ten pre-production chassis are being built, which will be used to gain operating experience prior to the formal launch at the Bus and Coach Show in October.

Six of the pre-production chassis will have ZF6S-150C six-speed manual gearboxes; the remainder will be fitted with ZF5HP600 five-speed automatic gearboxes. These will be the first British-built chassis to be fitted with horizontally-mounted Cummins engines, apart from a TigerCummins prototype which has been running in Scotland for 12 months with SBG subsidiary Eastern Scottish.

'l'o accommodate the Cummins L10 engine the Tiger 290 has a revised frame with a wide centre section — Leyland-engined Tigers currently have parallel sidemembers for the full-length of the chassis. The Cummins L10 engine, manufactured at Shotts, is lighter than the Leyland TL11, and Leyland engineer's claim that this cancels out any additional weight in the frame.

The turbocharged L10 engine has air-to-water charge cooling and is rated at 216kW at 2,100rpm with a maximum torque of 1,163Nm (858Ib1t) at 1,300rpm. In anticipation of the revised weight legislation that becomes effective in October the Tiger 290 has a front axle rated at seven tonnes. The rear axle is Leyland's own hub-reduction unit manufactured at the company's Farrington plant and is fitted with brakes which can accept non-asbestos linings.

The pre-production vehicles are fitted with ZF six-speed manual gearboxes because of their availability with an integral retarder. Leyland anticipates that production chassis will have ZF S6-90 gearboxes which will also be available with retarders.

The Tiger 290 is aimed at PSV operators who need highperformance luxury touring coaches. The first two Tiger 290 chassis are being bodied by Hestair Duple.


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