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Passing Comments

9th December 1939
Page 14
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Page 14, 9th December 1939 — Passing Comments
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Which of the following most accurately describes the problem?

Railways' ConsideraIN connection with the pro tion or Poor Road I posed scheme by which the Hauliers railways would carry loads for hauliers between distant points, it is as well to point out that the railways have never suggested that if the scheme be formulated and a haulier joins it, he should put the whole of his traffic on to the rails. They have actually stated that if the hauliers can keep any part of their services going they will be willing to accept only those consignments which cannot be tackled by road. Against the possibility of the scheme maturing is the fact that one railway is to build 7,200 wagons, in addition to 700 containers, so that there is obviously some shortage of rolling stock.

-And On Their THE view is put forward in

Backs Are Other I transport circles in the

Fleas" United States that freight

exchanges, called in this country clearing houses, are parasites upon the back of the transport industry. Millions of dollars per annum, it is stated, are filched from the pockets of transport operators by these concerns. We are aware that somewhat similar views are held in some quarters in this country, but we have not heard them expressed in such downright terms. On the other hand, the A.R.0_, in its recently published scheme for co-operative working, appears to hold the contrary view, for it is stated that the Association will welcome the co-ordination of its freight-broker members in the operation of this scheme.

Practice Too Closely Resemhling the Reality

ASTORY, of which some may doubt the veracity. comes to us from a woman reader. It is to the effect that two A.R.P. ambulance girls were told, during their practice, to pick up a casualty at a certain point. Whoever had been deputed to this position did not appear at the right ( ?) time, but a man of the tramp persuasion volunteered. He was asked to lie down on the road, and the ambulance was backed to pick him up. Unfortunately, it backed too far, and he was taken to the hospital as a real casualty. Never mind, girls, it is all fine practice and there is a good supply of tramps.

How Head-lamp HE point has been raised as Masks Affect Bulb I to whether or not the official

Heating . . . head-lamp mask has a harmful effect on the life of the bulb filament, through restricting dissipation of heat. Experiments have, therefore, been made by the Research Department of the I.A.E., using a thermocouple attached to the bulb by wire, a steady temperature being reached after 30 mins. The results in still air were as follow:—Temperature without mask, 205 degrees C.; with mask, 223 degrees C. With a head wind of 30 m.p.h., however, the results were:—Temperature without mask, 190 degrees C.: with mask, 175 degrees C.; which shows that, under normal running, the heat is lower with the mask, for it acts as a miniature radiator, which is, of course, more effective when there is ample draught. Tin-plated Pistons to Increase Wearing Life

THE tinning of pistons prevents cylinder scoring and the breaking of rings during the-running-in period. It also permits the employment of smaller clearances. Coating is effected by electro-chemical displacement, depending upon the fact that aluminium is less "

noble" than tin. The coating is about .0002 in. thick. Tin-plated cast-iron pistons were first adopted in 1931, and at that time justified the change from aluminium, but a return to the latter metal was made when it became possible to coat this effectively.

Consumption of Fuel URING this period of fuel

Influenced by Tyre "restriction it is necessary to Pressure . . . . consider every factor which affects consumption, and an important one is tyre pressure. Tests carried out by the Schrader concern show that an increase of as much as 10 per cent. can be caused by neglecting to maintain the pressure at the proper figure. This figure was obtained on a light vehicle with a normal tyre pressure of 28 lb. per sq. in., which was lowered by 40 per cent, to 17 lb. per sq. in. It appeared also that pressures above normal have little effect.

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