MOTORS AND MOTORING

Dominion, Volume 10, Issue 3117, 22 June 1917, Page 9

MOTORS AND MOTORING

(By "Clutch.") Motor Fuel. Exhaustive tests by experts ditcloso that the motor fuel now obtainable is much heavier tliau that in uso before the war, and for that reason is more difficult to properly vaporise. Owing to tho increased demands, it became necessary to (utilise tho lieavier products of distillation, and also to create mixtures of hoary and light distillates. With the old fuel tho carburettor gavo a well-vapounsed mixture; now, as a matter of fact, the best that can be secured ia a finely-divided spray of tho liauid in the air, some portions of which are deposited iu the manifold, -while a considerable portion enters the cylinders in drops, which do not contribute to power, but simply burn and. induce carbon deposit. In the cireuimstanccG, therefore, it seems evident that to insure a proper mixture reaching tho cylinder special attention must be given to tho design of the manifold, and tlus has been done in an Amorican dovice, iecently brought out, which is adapted to bo fitted to a number of popular maUoe of cars, in place of the regular manifold. In this the inlet and exhaust manifolds have been so combined that all solid fuel that reaches tho inlet manifold w wnvertod into vapour by the heat of the exhaust gases.- As all of the fuel that passes through tho carburretor is converted into an explosive mixture, not onlyshould there be an Increase in power, but there should bo a saving in petrol, and tho accumulation of carbon in the cylinders should be reduced. An Anticipation. a'he tendency at the moment; says the "Autocar" (England), points to the extreme probability of the water-cooled motor-car engine being very seriously rivalled in the not remote future. At, the best, water-cooling is a nuisance, aho cardinal objection to the water-cooled engino is its tremendous weight. llea\y cast-iron jackets, radiator, pump, and piping, and then about half a hundredweight or more of irattr. . Undoubtedly the abolition of water-coolmg ™1 in itself reduce th» weight, of theevosee engino by approximately one-third, quite apart from its other advantages. The water-cooled aluminium engine is _ now no novelty in America, , for it has been standardised by several ferns, but, nol announcement haa been made in in resard to automobile air-cooled en- «• jsit'U , trt\Mss alloy ie & its infancy. H juch great advantages have been secured from it already, is it not reasonable to anticipate that *t 11 "further developments and^ improvements will tako place? If they do not it will be the only domain of research and engineering in which they have not taken place, and as wo find the *j Sff&J? 1 JHSSI ZXflt «o™ time Tho wighte have been gradually mm.

Uibrloatlon. ~, . Oil of proper quality end ff»f ,£ untU quite reccntly-and oven now with ew oiceptions-toe beenjOomgdtoi to j£ sn^^ri e t 3 lu o»^. wall and that of .the toe end; J^tubuted the first part that comes in contact ruth the oil gets the. greatest share, whether mesßary or "thenvise. KaturaUy a hot reciprocating part, such as the piston, requires a, cooler, greater, and much moro frequent application of lubricant than a cool-running main ball bearing; yet this is cntiroly ignored in tho splash system. And,.to'this Ttrj inefficient method or distribution may bo added a, most irregular source of eupply, brans loft to tho memory of the motor-cyclist. Not two riders in a thousand ogrco as to tie quantity of oil required, nor in practice lubricate their engines the time. Such a system is obviously wasteful and faulty. The fitting of merely- a mechanically operated pump cannot always bo interpreted as designing a mechanical oiling system, because it might still retain tho splash as a moans of distribution. What is required is direct and positive delivery of oil to each bearing. Todesign such a system is admittedly a difficult matter; but, as tho motor-cyclo engine is becoming moro and more a conetantrspeed .engine, brought about by the incorporation of two,' three, and even four' speed gear-boxes, the problem is, perhaps, becoming simpler every day. ( Here and There. If tiio piston rings gum in tho grooves, deposit a littlo gvaphito in each groove when tho engine is next taken down lor cleaning. It may not bo a certain remedy in the case ol &raall two-stroke engines, but it retards the process of gumming, and seems to ensure tho freedom of tho piston-rings in specially oily cylinders, in 4-stroko engines. . Graphite is notoriously moro resistant to heat than any other lubricant, and somo motorists hold that it renders all'carbon deposits much softer and easier to dislodge. ■ Reports from .New York state that the entrance of the United States into tho war is expected to have a very pronounced effect upon tho petroleum situation already made acute, by the heavy drafts oil consumption, and the failure of field oporators to develop any new 'Sources of production that add any material to tho supply of crude oil. It is expected that the Government petrol requirements will be heavy, especially in equipping tho coast motor-boat patrol. Furthermore, strenuous efforts will be made to rcliove the petrol shortage abroad. These two influences are alono considered to bo sufficient reason to warrant the expectation of an early and material rise in the price of motor fuel." ' Hero are seventeen excellent rules for tho motorist who -wishes to keep his car in order-.-Remove carbon from engine, grind valves, clean petrol lino, Bush out crank case, adjust valves, care for clutch, clean and oil gear set, clean and oil universals, clean and oil differential, adjust bearings, care for lyres, renovate chassis, clean and polish-body, touch up exposed metal, care for top, caro Jor curtains. Lighting-up time: To-day, .<U3 p.m. Next Friday, A.30 p.m. ■To Motorists.—Save one-fourth Benzine by using Speedier Vaporiser on your engine. Oar eizo, 255;; Cycle size; 15s. Thirty days' trial. Cash refunded if no satisfied. R. Miller, Main Street, Greytown North. —Advt.