OPTIONAL ENGINES ON THE NEW REPUBLICS.
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A Fine Range of Chassis with Load Capacities of from 25 Cwt. to 31 Tons. Designed for Fast Haulage.
• TN our issue dated March 13th we imade brief reference to certain new Republic models for road-making and maintenance work, these forming part of a complete new range of commercial vehicles. We have now received further. details of the units of this range, together with illustrations of all of them, of which we reproduce three.
They include chassis with four and six-cylindered engines in the lighter types, as well as in the heavier. At least one includes four-wheel brakes as standard equipment, and on several of the others these are .optional at an additional charge.
To Meet Modern Requirements.
The chassis have been designed to meet modern traffic conditions. They have more engine power, giving increased flexibility and greater acceleration, and a capacity for higher speed when• this is permissible. Alterations have been effected in the carburetting, system and in the Combustion chambers with a view to increasing the power and providing greater fuel economy. Chassis frames have been strengthened and provided with additional cross-bracing ; shackles and spring brackets have been increased in strength.
The idea of giving Optional engine equipment applies in the 2-ton range to models 50, 85 and 86. The model 50 is a six-cylindered unit and has been in production for some little time, whilst
the models85 and 86 are built on the same lines as model 50 hut are equipped with four-cylindered units: The older model 175 and 76 series have been paralleled by two newly developed chas. -sis of 25-cwt. and 30-cwt. capacity resneetively, known as model 75-6 and 76-6, these having six-cylindered power units which develop-55 b.h.p.
An outstanding example, is the highpowered model 8-25W, which is of 31ton capacity. It is equipped with what is known in America as a herring-bone gear double-reduction axle. This -appears closely to resemble-the double-helical spur drive employed, in the doublereduction axles of certain Leyland
vehicles. . • A few alterations have also been made in the model 50, to which we have alread Y given reference. This has 30-in. by 5-in. 'mien:natio tyres with twins at the rear. The rear Springs have been overhung, affording more road clearance without sacrificing the low-frame height.
Details of Equipment. .
The existing model 60 series now has as standard equipment 32-in, by 6-in. pneumatics with twins at the rear, and the standard equipment includes a channel-steel fender and black enamelled radiator guard.
We will now refer briefly to additional points in. individual Models. The 25cwt. model 75-6 has its six-cylindered engine built as a unit with the clutch and gearbox. It is provided with an -air cleaner and gascolator, whilst the final drive is by bevel gearing. The wheelbase is 10 ft. 8i ins.
In the 3-ton class are models 65. and 66. These are for fast heavy-duty and their six-cylindered engines develop
76 b.h.p. Four speeds are provided. Four-wheel brakes are standard equipment: those on the front wheels are of the Bendix three-shoe self-energizing pattern internally expanding and totally enclosed, whilst the rear-wheel brake.s are of the ordinary internal-expanding type. The heavy-cross-braced frame is tapered over the rear axle and has side members 7-&-in. deep with 2.i-in. flanges. The wheelbase.% of the two models are 14 ft. 11/ ins. and 16 ft. 81 ins. respectively.
Auxiliary Spring Suspension.
An important feature of the model 8-25W, which is designed to carry 3i tons, is to be found in-the new two-stage rear springs, each of which is' made up of a main Spring and auxiliary leaves which form part of this spring, so that the springing is approximately-proportional to the load. This model has a transmission brake mounted on: the forward portion of the propeller shaft in the neighbourhood of the centre, bearing, and the four-speed gearbox is mounted as a unit with the engine. 1 The last-named is a four-eylindered unit of, 41-in. bore and 54-in.' stroke. The. wheelbase is 13 ft. 8i ins., whilst modifications of this model ate made in wheelbases of 15 ft. 44 ins. and 12 ft. ()tins.
• Another development which is progressing very satisfactorily, is the production of the newly acquired Linn tractor, for which a favourable reception is • expected.
It will be of interest to repeat that users' requirements on this side as regards spare parts can be met by Republic Service and Spare Parts Co., Ltd., 20, Peterborough Rd., London, S.W.6. • c20