1929-02-09 — Page 17

THE HONGKONG TELEGRAPH.

MOTOR NOTES FROM GREAT BRITAIN.

[Special Report to the Hongkong Telegraph.]

BY R.A.C.

MOTORING SUPPLEMENT,

SATURDAY, FEBRUARY 9, 1929,

number of vehicles and the freight charge on the cars in the single puncture was experienced; question of road development be ease of eneli A.A. member con-In fact, beyond cleaning,olling comes correspondingly more pres-cerned.. sing.

Touring in Europe. Mention of the AA. calls to mind a recent occurrence which shows how useful this organise- tion can be to British motoriste the touring in Europe. A number of was in Ostend over night as, owing to the motorists were obliged to remain 15,200 cars in a week, compared an accident to a crane, their cars with, 3,000 in 1923. Thus, they could not be off-loaded from the average flow has increased more ship till the morning. With the than fourfold in five years. The aid of their local representative number of vehicles, however, has the A.A. were able to recover from only doubled in the same period, one of the Belgian Government so that obviously road usage in- Departments, a monetary recom- crease more rapidly, than the penae equivalent to the return

The tremendous growth of 1 Taking private ears alone, motor traffic In Great Britain dur average traffic passing all ing the last five years is brought A.A. coneus pointa in 1928 out very clearly in the annual Conan figures prepared by the Automobile Association. These do not deal with street traffic in London or other great cities, but offer a valuable index to average highway traffic throughout the country.

AUTO

SUPPLY HEADQUARTERS

The most complete stock of Auto Acces- sories in the City are here at lower than elsewhere prices.

No matter what you might want in acces- suries we have it.

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30-32 Des Voeux Road, Central.

The Firm Tractive

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GOOD YEAR

3-28-17

DISTRIBUTORS

ALEX. ROSS & Co. (China), Ltd.

PRINCE'S BUILDING. HONGKONG.

and replenishing nothing was done It is good to learn that repre- to the thr from start to finish. sentation of British cars on the

Cars for Oversca Vlaitors, Continent has lately been in creased by the appointment of Within the next few months the agents in Holland for the sale of leave season will commence once Talbote. The 14/45 h.p. 6-cylin-again and to a number of visitors to England the question of a car der model has earned a fine for the period of their stay will putation since Its first public ap become important. dospite the handicap of the import & Kilburn Lid, and successfully pearance over two years ago and

The scheme evolved by Shaw duty, it is likely to find a canoporated for several years past, iderable market in Europe.

The excellent performances of visitor to do his motoring in the undoubtedly allows the Oversona standard productions in the hands most pronomical and trouble-free of amateurs are gradually killing manner.. Besides guaranteeing the carefully fostered cliche that an agreed price for the repurchase British case are suitable only for of the car at the end of the stay, British ronds. A typical example this firm has a most comprehen is the 4,500 mile trip undertaken sive service arrangement under by two brothers with a Humber which owners may take their cara fabric saloon through thirteen to the London service station for Europieun countries Including periodical inspection, for which, parts of the Balkans where road together with certain adjustments, conditions were of the very worst. no charge in made. By these Although a complete set of spares means visitors' cars are kept at a was carried the ear stood up to its constant pitch of efficiency. work so successfully that on its return to England the packages were returned to the works at Coventry unopened.

Quite a number of visitors ench year take their cars them on their return overseas and back with

arrangements can be made so that France is an ever popular tour the minimum time is required for ing ground and many British packing and shipping. A car that motorists drive down to the has been designed throughout Riviera each year. An owner of with an eye to overseas conditions

a 16 h.p. Sunbeam recently did in the 6-cylinder Brocklebank. Home 3,000 miles over the roads The engine has a 2 in. bore and

NOTICE

ADVERTISERS

All advertising to be insorted in this Motor Supplement, must be delivered not later than 2 p.m. on the Wednesday of the week of publication.

Used Cars

SEE US WHEN YOU WISH TO

Buy or Sell

Teb's

10 Queen's Road C.. Phone: Central 4925

1

MODERN

between the Northern coast and 41/4 in. stroke; the four-bearing|| MACHINERY

the Mediterranean including visits crankshaft is particularly sturdy to many of the old towns en route and revolves in 2. in. diameter and numerous, excursions to such bearings,

Lockhend hydraulic places na Peira Cava, over 5,000 brakes are employed. A numbor ft, above sea level, and the Col de of these cars, fitted with saloon Braus, 3,275 ft. Despite the big bodies have, after severe tests, milenge and a heavy load not a 'been purchased for use in Japan.

い

LUBRICATING MOTOR ENGINES.

BY LEWIS A. PARKEN, M.I, MECH.E., M. 1, MAR. E.

Being the report of a recent lecture given at the Institute

of Engineers and Shipbuilders at Hongkong.

(PART ONE)

No machine can work without The important difference be lubrication, and too much attention|tween the two types comes from the cannot be paid to it, as the life of fact that in the four stroke prac-|

motor car depends upon, the lically all the burnt gas is driven quality of oil ušcu.

out of the cylinder. In the two stroke type the burnt gases are dis- placed and forced out of the ex-) There is, however, a difference faust port by the fresh charge en- between · “Lubrication", and "Cor-tering the cylinder from the crank rect Lubrication." There is a long enses. If the amount of this is re- distance from a "no-trouble" stand-duced for light louds, less of the point to perfection in operation, and

Oil is an essential part of any machine.

There are several misleading ideas about lubrication, and the most common one is that "all oils are the same."

it is only by carefully analyzing the burnt gas is forced out and the actual conditions, and using spec-fresh charge is diluted, rendering ially selected oll, that perfect re- it difficult to ignite, and so the on- sults can be obtained and maintain-gine operates unevenly at light ed.

louds, which makes it unsuitable in majority of these engines are used general for motor car use. The in motor boats, and light motor cycles where, they generally operate under fairly heavy loads.

cylinder, serves

The piston, which is inside the to transmit the crank.. Since the piston head is in explosion to the connecting rod and

direct contact with the burning charge, it must be designed to per mit quick transfer to the cylinder Buying oils by "apecification" is a walls of the heat absorbed by it. mistake. It is quite possible to it should also be light in weight make an oil to n specification or to permit ita motion to be quickly near enough--which will destroy reversed at each end of its stroke. your engine. The fact that it is up to specification is no guarantee of its lubricating value.

Very often you are offered ofle "just as good. ue" another, because they have similar flash, fire and viscosity figures, and are cheaper per, gallon.

The argument seems sound, but what are the facts?

In order that the full force of the exploded gases may be utilized, the piston must be a good it in the Another thing, it is common to eylinder. If it is not, gas leakage refer to different grades as Light, will occur, which means a loss of Medium or Heavy, and oils are power. On account of expansion often compared and bought on that under heat, it is not possible, to grade. There is по universal make the piston such a good fit thur standards, if you ask for a Mediumit will be gas tight, and therefore oll, you may get Medium as far as the piston is provided with ringa that refiner is concerned, but it may which are designed to expand be another refiner's Light, or against the cylinder wall, closing Heavy.

the clearance space around the pis- ton.

To avoid any trouble, you should | always ask for all by brand, name

and grade.

These rings are split nt one point in the circumference, and have, suf- Relent tension to keep against the cylinder wall.

When you consider that the amount you pay for all la about the smallest item of expenditure you It must also be borne in mind have, it seems hardly worth while that as the charge le compressed, to risk your car with inferior pro- it gets behind the ring and also ducts.

assists in forcing it against the

Ou cools, "cents," but friction cylinder face. and wear cost "dollars,"

number of rings is three or The number four-more often the former. In The most common type of engine

some engines the number has breh used for aeroplanes, motorcars, reduced to two, and there is pro- motor cycles, buses, trucks, etc., la bably no question about the sound- that known as the four stroke, and news of reducing the number of its principle of working is, that one rings, if they are well designed and power impulse is generated in four nogged.

strokes of the.plston, or one power impulse for every two revolutions of the crank shaft...

The piston friction is more than [half the total amount of friction

There is also another method in the engine, so that by having the two stroke cycle, in which one fewer rings the piston friction is

reduced. power impulso is generated in two strokes of the piston, or one power. Impulse for every one revolution of the crank shaft.

Piston rings should be pegged- if not, they rotate in use and get in- to line, which allows, the gas to "blow-by," losing power, and In this type of engine the crank breaking the oil film, case is closed and made air tight, ther, they wear to the shape Fur- and the fuel charge, instead of be of the cylinder, and If, after ing drawn directly into, the cylin-

der, as in the four stroke, is drawn cleaning, they are put back any into the crank case, it then passes anywhere, they will not be a good. into the cylinder, 16 compressed, andt, whereas, if they are always put back in the same position, they fired, and the burnt, gases are ex- hausted at the completion of the make a much better anal. power stroke.

(To Be Continued)

That's why our repair service is better.

LANE, CRAWFORD'S Ring C. 3103-Garage

WHITEAWAYS

FOR

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* 15, Connaught Road, 0,

Telephone 0, 8120,

MEMBERS

of the Hongkong. Auto- mobile

Association are requested to address all communications to THE HONORARY SECRETARY H. R. A. A...

clo The Hongkang Telegraph

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-HONGKONG AND KOWLOON.