1927-06-18 — Page 22

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THE HONGKONG TELEGRAPH, MOTORING SUPPLEMENT.

Straight to the Mark of Public Favour

Hitting the bull's eye" with its records of success-the Firestone Full-Size. Gum-Dipped Balloon has set today's highest mark in tyre quality.

Full-Size Balloons are acknowledged to be the easiest riding tyres ever built, and it is due to the Firestone process of Gum-Dipping that the thin sidewalls are strong enough to stand the added flexing strain of this type.

Long mileage, car-protection and low petrol cost, are further advantages.

Firestone

THE DRAGON MOTOR CAR CO., LTD.

Telephone Central 1246 or 1247.

33, WONG NEI CHUNG ROAD, HAPPY VALLEY,

QUICK STARTING

NON WASTING THEAT

SHELL MOTOR OF

T (BLENDED)

SHELL offers you motor lubricating oil scientifically blended to do properly the three things which, oil ought to do.

1. At cold air temperatures it is free

flowing to give quick starting.

2. At crankcase temperature, rela. tively thick to ensure economical consumption.

3.

At cylinder temperature it has. good fluidity to reduce friction

bur retain sufficient body to ensure efficient lubrication.

Shell Oils as sold to the public are exactly the same as were used to set up the world's speed records of 1926 for both cars and motor cycles.

Asiatic Petroleum Co. (S. China) Ltd.,

AS

ASIATIC BUILDING..

RESISTING

SHELL

MOTOR

OIL

AS

SHELL

SAIRIT

HINTS

FOR THE

SATURDAY, JUNE 18, 1927.

MOTORIST

by

ALBERT L.CLOUGH

"PINKING" AND GASOLINE,

ACROSS THE ATLANTIC.

Special Boats for Cars.

AUSTRALIAN TRADE.

Clyno Sales Soar.

Of late years every effort has The recent Clyne price drop has been made to reduce the cost of received a splendid reception from transporting cars from America to the Australian public, states a Europe. One of the difficulties in sales executive of Care of Eng- this respect has been a way of land, Ltd. "Prospective pur- handling cars without having them chasers are quite emphatic in crated, which is a particularly stating that, price permitting, expensive job. To overcome this, their preference is for the British ja now service of specially con- car."

structed steamers haq

boon

inaugurated, between Now York "Several Clyno owners who pur- and England, for the purpose of chased in January, have written, Oil Pressure,

transporting fully-assembled cars, stating their entire confidoneo in The ears are not crated, but are Clyne, and eulogising its splendid Question: The oil gauge of my loaded on to the steamer without, stamina, all of which goes to prove car registers about two pounds being boxed, being pushed up that, when designed for Australia, with the engine idling and about 15 ramp on to the deck on their the British car will receive pre- pounds with the engine warmed up wheels. and the car running thirty miles per hour. The gauge reads up to fifty pounds. I am using oil of good quality and changing it does not affect the gauge reading. 18 the pressure I am getting suffi- clent?

Answer: The oil pressure recom- mended by the manufacturer is. one pound for each two miles per hour of speed and this checks all right with what you are getting.

Semi-Automatic Spark Control.

Not a few motorists have care| which cannot be operated on hard pulla, with wide open throttle, with-| out their engines. "pinking" or developing the light, sharp knock known as detonation and sometimes referred to as the fuck knock. Some of these engines which will run smoothly, just after having been cleaned of carbon, will begin to "pink" after a few hundred miles of service. This trouble is general- ly due to the compression pressure attained in the cylinders being too high to permit normal combusion of the fuel used; pinking being caused by the excessive pressure of abnormal explosion waves set up in the burning mixture. Seme motor- ists seek to reduce pinking by re- ducing compression, using an extra gasket between the block and the Question-My --- Car has cylinder head to increase the clear- automatic spark advance and still ance space and use ordinary gaso- there is a spark lever on the stċer- line as fuel, but there is anothering wheel. If the spark is automia- possible solution, namely to adopt tic, why this 'control levor? a fuel which will burn without de- tonation and knocking under exist- ing compression pressure. Such anti-knock gasolines are now, ob- tainable almost anywhere and cost but a few cents a gallon more than ordinary gasoline. Indeed it is highly probable, that in the not dis- tant future, ali gasoline sold will possess anti-knock properties. Un- til that time comes, however, it is usually possible to prevent pinking in an engine which is subject to it, by running it on some brand of non- detonating gasoline, but it should be remembered. that the use of these special gasolines is no re- medy for mechanical or pre- ignition knocks, but only for genu- ine fuel kerosene involving detonn- tion.

"Running in" a New Engine. Question: I expect to buy a new car very soon. What suggestions can you give me na to "breaking in" the engine. How much oil should be mixed with the gasoline and how long should this method of lubrica- tion be kept up? How often should valves be ground?

Answer: The instruction book! furnished with the car will give you ning in

directions

3

new

Answer. The type of ignition control on your car is more usually spoken of as semi-automatic. The. automatic device regulates sparkl advance only through the ordinary:

for all driving range, that is engine speeds made use of in ordinary service, but it is probably not designed so as to give sufficient retard for safe eranking or to give. sufficient advance to permit the maximum speed of the engine to be obtained. The hand lever is provided to give full retard and to give extreme advance in,ease very high speed is desired.

..

Larger Tyres.

Answer. Yes, 33 x 5.77 inch semi-ballon tyres will take the place of the 32 x 4 inch tyres now on your car, but before adopting them, you better have one of these larger casings. tried on both a front and a rear wheel and inspect carefully to make sure that they will not run too close to the wheel housings or mudguards, with the springs deflected, way down and chains on the tyres and that there is no danger of their interfering otherwise. You can soon tell if the larger tyres are going to re as to run- duce the angle to which the front engine, but wheels are turned in steering, in a general way, a car right enough to be disadvantageous. from the factory should not Steering movements will probably be run at more than 25 m.p.h. for he appreciably harder with these the first thousand miles. Engine oversize tyres, but not enough so oil should be drained and renewed as to prevent their use, after the first two hundred miles and more frequently than normally for several more fillings. One pint of oil to each 5 gallons of gasoline will be about right. After a thou- sand miles there will be little ad- vantage in mixing oil with the fuel. If the valves are tight when you get the car, they should not require grinding under 5,000 miles and may go longer without it. Do not have them ground until competent ins- pection shows that they actually leak to a material extent. Un necessary grinding of valves is to be avoided.

MOTOR CYCLING.

The Tourist Trophy Races.

New Piston-Rings.

Question. I have a - CRY which I intend to overhaul and which has been run 20,000 miles. The engine has pretty good com- pression, but at times, oil appears Would around the, spark-plugs.

it be advisable to put in new piston-rings?.

Answer. Yes, this will be a logical thing to do, if you find that the cylinders are still perfectly smooth and are not much out of round,

SEVERE TESTS.

"Colonial" Motor Cycle Trials.

A perusal of recent issues of For many months before the

the Motor Cycle is sufficient to T. T. Races in the Isle of Man take convince anyone that motor cycles plaçe motor cycle manufacturers are continually subjected to tests have under consideration plans which no other type of vehicle could survive. Several trials for rendering their products more have been held this year in which reliable and more efficient. Both most of the routes was over lanea manufacturers and private owners deep in mud and hills which no! realise the enormous influence one would attempt to climb in thei these races exert on the design winter.. The majority of these of every component, and they trials are of a sporting nature, and equally appreciate the sporting are not intended to be more than! element in this, the blue riband of entertainment for the riders and: the motor cycling world. Pre- spectators, but without doubt they parations for this year's races, serve to develop motor cycles for which take place in June, are well the roughest colonial use. under way, but, of course, much still remains to be done. The predominating trend of modern engine design, as exemplified by the new Tourist Trophy machines, is towards the adoption of over- head-cam-shaft units, and many experimental engines of this type. are undergoing at Brooklands and alsowhere tents which will, doubt-| less, morit their being used in thej Isle of Man..

HELPING THE BLIND.

A White Walking

Stick.

So that their disability will bej It is anticipated that the Senior known to motorists and pedes Rach, for machines with engines triaria the blind members of the) of 500 c.c. capacity, will provide a Eastbourne (Eng) Braille Club greater struggle for pride of place have decided to carry a white than any of the other previous walking stick. The idea is that; AUTO BLAZES TRAIL. according to reports to the United LICENSE FOR JUNIORS events; there is no doubt that the the white sticks will be readily

States Department of Commerce.

medium-sized motor cycle engine scen by drivers, who will exercise This accomplishment was the first An automobile "blazed

"Connecticut la considering pas-has lost none of its popularity, greater caution than would usual- journey by automobile between the sage of a law permitting "Juniors, and that it has by no means been ly be the case with able bodied trail from Buenos Aires, Argen Argentine capital and the remote or persons from 16 to 18, to be developed to the fullest possible pedestrians.

It is an idea that could be well! extent for ordinary road upage- to Asuncion, Paraguay, inland capital of Paraguay.

licensed as automobile drivers.

The Motor Cycle.

adopted in this country:

tina,

the

ference."

Kumber

3.49 H.P., O.H.V.

WE

E have just received a shipment of these famous

SPORTS

MOTOR CYCLES

AND SIDECARS

THESE SNAPPY MACHINES

ARE NOW

ONZE SHOW

IN OUR SHOWROOM. CALL AND SEE THEM EARLY.

Lane, Crawford, Ltd.

SOLE AGENTS.

Prest O-Lite

STORAGE BATTERY

THE Prent-O-Lite 613 JFK-full 13 plate The bird, Chevrolet, Buick (Standard), Essex, Cleveland, Oldsmobile, Moon and Pontins-offers the most econom- ical and satisfactory replacement battery pos- sible to obtain for any of these cars. Other types' give the same exceptional service for other makes of automobiles,,,

All Prest-O-Lite Batteries are backed by Prest-O-Lite Service and sell at remarkably low prices compared with any similar full sized batteries of standard makes.

Hongkong Hotel Garage,

Prost-OLite