Scammell Gear on B.M.C. Tractors
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LISTIN and Morris-Commercial tractor units with Scammell automatic coupling gear are now being produced. This announcement by the British Motor Corporation this week, makes two new ranges of prime mover available to those operators already using Scammell semi-trailers with other tractors.
The new Austin tractor is based on the 9-ft. 6-in.-wheelbase 5-ton chassis and is available with either the Austin 4-litre petrol engine or Perkins P6 oil engine. Trailer hand brake and coupling gear release levers are mounted conveniently in the cab, which seats two persons including the driver, and a Clayton Dewandre vacuum servo is provided for the semi-trailer brakes. The complete tractor weighs 2 tons 61 cwt. With trailer, the maximum gross vehicle weight is 12 tons.
With full forward control and a 7-ft. wheelbase, the new Morris-Commercial outfit should be exceptionally mamzuvrabJe. The series II all-steel cab is mounted on this chassis, and the choice is between the 100 b.h.p. six-cylindered petrol engine and the 70 b.h.p. oil engine, the oil engine having an exhauster for the .semi-trailer servo.
Scammell semi-trailers of up to 10-ton capacity may be used with this unit. Standard tyre equipment is 7.50-20 by 10-ply, permitting a gross weight of 14 tons, but 7.00-20 by 10-ply tyres may be specified for light working up to 10 tons gross vehicle weight.
The Scammell range for use with either of these tractive units includes straight-framed semi-trailers, frameless tankers and tippers, pole carriers and semi-drop-framed trailers. The forward control of the Morris-Commercial tractor permits a trailer length of 23 ft., the overall length then 'being 31 ft. 6 in., or I ft. 6 in. within the legal limit. The turning circle of the tractor is 30 ft.