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for 16 tons from Albion

18th September 1964
Page 125
Page 126
Page 127
Page 125, 18th September 1964 — for 16 tons from Albion
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THERE are four models in a new range of Super Clydesdale four-wheel chassis introduced by Albion Motors Ltd. Three of them are designed for the new maximum gross weight of 16 tons (two being for normal haulage, the third a tipper) and the fourth is a tractive unit for use at gross train weights up to 20 tons. All four models have a front-end layout suitable for the new Leyland Group tilt cab announced on pages 126-130 of this issue.

Whilst the cab used by Albion is to the same general design as the group unit there are certain differences, including front-end styling and the use of lighter gauge . panels in places. The same tilting mechanism is used but the cab is not locked automatically in the down position,

there being brackets at the reap supports 'which locate on rubber pads, and the cab is held down by screwed pins inserted horizontally through the cab brackets into the support brackets. .[he hexagon end of the pins is the same size as the wheel nuts so that the wheel brace can be Used to lit and remove them.

Mechanically, the Super Clydesdale range is based on the previous Clydesdale. The Leyland 0.400 engine and A.E.C. six-speed overdrive gearbox are used as before, but the axles are heavier to take the higher weight rating—there is no difference in axles between the rigidsand the tractive unit although the loadings will be lower for the latter. The frame also is altered and there are important changes in the brake system. There are two wheeIbases offered for the haulage models, which are the CD65NW with a 14-ft. 0.5in. wheelbase and the CD65LW with a 17-ft. 6-in. wheelbase. On the tipper--CD65TW—the wheelbase is 12 ft. 2-75 in. and on the tractive unit—CD65TR —it is 8 ft. 0-75 in. The tractive unit has an overall width of 7:ft. 5-5 in., the other three models being 7 ft. 11-5 in. wide. Front overhang is 4 ft. 3 in. in every case.

The Leyland 0.400 Power Plus engine is 'used, but in this application the auxiliaries and inlet and exhaust manifolds are fitted on the one side of the :engine. This arrangement permits complete accessibility for Servicing when the cab is tilted, and ensurei . that heat from the exhaust manifold is dissipated on the side opposite to the driving seat. Maximum output is 125 b.h.p. net at 2,400 r.p.m. and 300 lb. ft. torque net at 1,600 r.p.m. and drives through a 14-in.-diameter, single-drive-plate clutch to the six-speed, constant-mesh overdrive gearbox. The ratios of this box are 6-988, 4-308, 2.655, 1.605, 1 and 0-76 to 1 forward, with reverse 6.343 to 1. Optional is the crawler/splitter gearbox, introduced by Albion early in the year, which has an extra gear train giving a reduction of 1-338 to 1. It is intended to give lower first and reverse ratios-9.3 to 352 and 8.487 to 1 respectively—and can also be brought into action when any indirect ratio is selected. This means that when fitted with the six-speed overdrive, 10 forward and two reverse ratios are available. When the crawler/splitter box is fitted an auxiliary lever for selection of normal or low trains is mounted adjacent to the main change-speed lever.

So far, the units referred to have been as those fitted to the Clydesdale, but the rest of the design is new, at least in respect of the main items. The front and rear axles are naturally heavier than before, to suit the increased loadings, and although the tractive unit will not be laden as high as 6 tons front and 10 tons rear, as will the three rigids, the same axles are used for all four models. The rear axle has a double-reduction drive, through spiral-bevel gears at the centre of the axle, and epicyclic gearing at the hubs. Changes in the axle ratio are made by varying the ratio of the primary spiral-bevel gearing and three standard overall ratios are offered: 6.933, 7-428 and 7.12 to 1.

Air-pressure braking is employed, the design on the three rigid models representing an interesting solution to the problem of obtaining the efficient handbrake required by the new Construction and Use Regulations. As well as air-pressure service brakes and a multi-pull mechanical handbrake, an emergency hand-operated air-pressure brake is fitted. The brake assemblies are operated by single diaphragm brake chambers at the front axle and by triplediaphragm chambers (as used on many other chassis introduced for the Show) at the rear, and the emergency hand valve allows air to one side of these. The service side of the triple-diaphragms and the front chambers are fed independently from twin reservoirs, air for the handoperated air brakes being taken from that for the front brakes.

Whilst_ the emergency air brake can be used for holding the vehicle momentarily on hills and so on, it cannot be used as a parking brake and, on the tractive unit, singlediaphragm chambers are tised at the rear axle, the hand control valve being used in this ease for independent operation of the semi-trailer brakes. The brake units at the wheels are Girling, cam-operated, 15-5 in. by 4.5 in. at the front and 15-5 in. by 7.7 in, at the rear. Total frictional area is 624 sq. in. Suspension is the same on all the new chassis—by normal semi-elliptic springs 4 ft. 6 in. long at both front and rear axles. But whilst the front springs are 3 in. wide, those at the rear are 3-5 in. Telescopic dampers are standard on the front axle of the tractive unit and available as options on the three rigids. Burman recirculatory ball type steering is used with hydraulic power assistance standard except on the tractive unit.

There is bolted frame construction, the ik-in.-thick pressed-steel channel-section main members having a maximum depth of 9.25 in. with 2-5-in.-wide flanges. Tubularand pressed-steel channel-section cross-members are used and the top flanges of the side-members are flitched wiff• angle-section pressings. The square-section fuel tank fittec has a capacity of 45 gal.

On the three rigid chassis, tyre equipment is 11-00-20 (16-ply) front and 11-00-20 (14-ply) twin rear or equivalent, whilst on the tractive unit, 9-00-20 (12-ply) or equivalent are fitted all round_ Electrical equipment includes 24V lighting and starting units of C.A.V. manufacture, the dynamo being 4.5 in. diameter and totally enclosed, and the starter motor is 4-5 in. diameter. The two 12V batteries have a capacity of 81 amp. hr.

Standard fittings which come with the cab and were previously options on Albion vehicles are windscreen washers, a front bumper, heater and demister, flashing direction indicators and interior sun visors. Optional items include front dampers on the three rigids, the crawler/splitter gearbox, a lowor high-speed power take-off, spare wheel and spare wheel carrier.

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