New Morris 18-ton gross Tractor
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A NNOUNCED on Monday, the opening day of the Morris Commercial ;how at Longbridge, a new Morris oilalgined prime mover is designed for a naximum gross train weight of 18 tons tnd has a maximum speed of approxinately 40 miles per hour. The power mit of the vehicle is a bored-out version tf the B.M.C. 5.1-litre engine, and has a apacity of 5.7 litres. A report of the ihow is on page 519.
Maximum output of the unit is 105 ).h.p. (net) at 2,400 r.p.m., which correponds to the gross rating of the smaller ngine, the net output of which is 90 b.h.p. 'he wheelbase of the tractor is ft. and it has an estimated kerb weight, rithout coupling gear, of 3 tons 1 cwt. Suitable only for a fifth-wheel coupling, se chassis is fitted with an FF-type at,. Power is transmitted through an :.N.V. five-speed gearbox with ratios of: rst, 7.582 to I; second, 4.381 to 1; third, .396 to 1; fourth. 1.478 to I; and top, to 1, constant-mesh engagement being rovided on third, fourth and top gears. tn Eaton two-speed 16500. rear axle is tted as standard equipment, this having ttios of 6.14 to 1 and 8.54 to I.
The combined friction area of the 16-in. .ont brakes and 151-in, rear brakes is 30 sq. in. Telescopic dampers are fitted the front springs and are optional quipment at the rear, whilst the fuel tank tpacity is 26 gallons. Mounted on steel isc wheels, standard lyre equipment cornrises 8.25-20-in. (14-ply) covers, 9.00)-in. (12-ply) tyres being optional.