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Pass ing Comments O NE of the most serious causes of engine

15th March 1935, Page 32
15th March 1935
Page 32
Page 33
Page 32, 15th March 1935 — Pass ing Comments O NE of the most serious causes of engine
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wear is ‘-/said to be oil deterioration due to oxidation. It is known, however, that certain substances, generally called anti-oxidants, delay this trouble, thereby minimizing sludging, acid formation, discoloration and other evils. Tin compounds prove

efficacious in this connection. These compounds must, of course, be soluble in oil.

A READER from Wales has put forward the inrTh.teresting suggestion that as fuel for the chains of beacons that are to be used on hills in connection with the Jubilee celebrations, thousands of motorists and garage proprietors could give stocks of old worn tyres, as this material would make a most suitable and slow-burning fuel for the purpose in question and the smoke would be dense. ACCORDING to a German writer, the addition of powdered aluminium to tar and bituminous curfacings gives a high reflecting power, which is claimed to keep the temperature of the material much below the usual level and so assist in preventing softening in hot weather..

I N America some important roads are being resur aced with vitrified brick carried on a sand bed rolled to a thickness of in. over a 64n. concrete base. The bricks have side lugs and are laid and aligned four rows at a time, those for pedestrian crossings being light-coloured. An asphaltic filler is used after whitewashing the bricks to prevent adhesion of the asphalt to the upper surfaces ; the superfluous asphalt can then be removed with flat spades.

AT the time of writing, the speed record of 276.816 m.p.h., put up by Sir Malcolm Campbell in his famous " Blue Bird," has not been exceeded, It is a wonderful achievement, not the least remarkable feature of which is the co-ordination of strength between all the parts constituting the vehicle. Amongst them were Dunlop wheels and tyres, Ferodo brake facings and clutch linings, ClaytonDewandre brake servos, Hoffmann bearings, D.B.S. gearbox pinions K.L.G. sparking plugs and

Moseley Float-on-air upholstery. Castrol oil was utilized for the engine and the fuel was prepared by Pratte.

DURING the course of a speech at a recent dinner we heard a gem of unconscious humour. "British highway engineers," said the speaker, "had put their heads together and produced a perfect wood block."

THE Minister of Transport, speaking in the House of Commons on the subject of driving tests, revealed that many of the applicants for the posts of examiners, although they had long records of driving experience, did not understand the sequence of traffic lights or the meaning of signals, and were deficient in road sense. A number had never heard of the Highway Code, and many applicants were rejected as unsafe drivers.

FROM correspondence which has reached us, it is apparent that many goods vehicles arc still being run without the authorization of a carrier's licence. Operators who do so are liable to severe penalties. As an example, at Chesterfield County Petty Sessions a carrying concern Was recently fined £5 for using a motor vehicle without a suitable licence. A fine of £5 was also inflicted for employing an unlicensed driver, whilst the driver was subjected to the following penalties-10s. fine for not having a rear light, £5 for driving without a licence, £5 for using a licence issued to another man, and RA, including costs, for failing to giVe his name and address to a constable, involving a total sum of £10 in the case of the operator and £14 10s. for the driver.

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