Primrose Use Hydraulics
Page 52
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BYpressing downward-6n the drivingaxle springs of a 6 x 2 vehicle with orthodox rear suspension, at a point close to the balance beam connecting them to the trailing-axle springs, traction can be temporarily improved when wheelspin would otherwise occur. This is the principle of the Trans-Load device announced by Primrose Group Sales, of Whalley, Lancs. The force is applied hydraulically, by means of ram units attached to the frame. Hydraulic pressure is obtained from a manually operated pump mounted in the cab.
The device is primarily intended for use when the vehicle is unladen, and therefore more prone to traction difficulties. The method of operation is by a vertical pump lever, the normal operating pressure required being 40 lb. An automatic warning light is incorporated in the system and this is not extinguished until the release lever, situated at the base of the operating lever, is turned to the " off " position.
The price of the Trans-Load assembly fitted at the factory is £97 10s., but it may also be obtained in kit form at £85.
Four-headlamp Mixture From Lucas
A" MIXED" four-headlamp system has been introduced by Joseph Lucas, Ltd., and is on display at the London Motor Show. It consists of two 7-in.-diameter double-filament lamps paired with two 51-in.-diameter units. Because of their larger reflectors, the 7-in.-diameter lamps have a greater efficiency in terms of light-flux collection than the 5f-in, double-filament assemblies used with the normal fourheadlamp layout. This is claimed to give a better dipped beam.
BOOK OF CAR TESTS
THE, 1961 edition of "The Motor" Road Tests, published this month by Temple Press Ltd., contains illustrated reports on 43 British and foreign cars road-tested by the technical staff of The Motor during the past 12 months.
SAFE DRIVING AWARDS QUPERINTENDENT A. R. Johnson. x-) of the Hull City Police, presented safe driving awards to drivers of the Esso Petroleum Company last week.