1927-09-03 — Page 13

THE HONGKONG TELEGRAPH,

MOTORING SUPPLEMENT. SATURDAY,

In These Days Economy

J

-Must Be Your Motto.

FIAT

409

Sole Agents for Hongkong; Canton and Macao

SOC. ITALIANA. IMP. ESP. ESTREMO ORIENTE, LTD. Managers:-A. GOEKE & COMPANY.

SHOWROOMS

67, Des Voeux Road C.

Tel. C. 4821

WORKSHOPS

Caroline Road,

Tel. C. 3532

اله

OFFICES

3rd Floor China Bldg, Tel. C. 2221

THE B.M. W. TOURING MOTOR CYCLE

WHICH WON THE ITALIAN TARGA-FLORID RACE, 1927

12 B.H.P. MODEL R42 500 cc.

The new B.M.W. Touring Model represents the latest and most progressive

form of engineering development applied to motor cycles.

In designing the R.42 model, it has been the maker's endeavour to procure with all possible, expediency, every step of technical progress and every item clients. The outcome. of riding experience for the benefit of a wide circle

of this endeavour has been to produce-

The most modern Touring Motor Cycle of the highest quality ever put on the market.

A FEW NOTABLE FEATURES

Engine entirely water and dust proof.

Double Frame throughout..

Increase of engine power to 12 brake horse power.

Rims suitable for normal or balloon tyres.

All gearing effectively enclosed in oil-tight casings. The universally recognised advantages" of "shaft-drive.

Bosch head and rear lights Speedometer-Horn.

All spare parts in stock in Hongkong.

May we give you further details of this super-motor cycle?

If you are interested in the most luxurious two-wheeled machine in the

world, please call or write for full specifications and particulars.

REDUCED PRICE H.K. $830 00

Sole Agents: CHIEN HSIN ENGINEERING CO. First Floor, Asiatic Building.

HINTS

FOR THE

MOTORIST

by

ALBERT L. CLOUGH

ECONOMICAL CARS BUT WASTEFUL ROADS.

SEPTEMBER 3, 1927.

Valve Grinding and Carbon Removal.

NEW LONGUEMARE CARBURETTER.

Horizontal Model Available.

To all motorists who had expori- ence of the early cars when motor- ing first began, the name of Lon- guemare will be familiar, and it is Interesting, therefore, to observo that this famous, firm has now come Into the line with its rivals and is producing an instrument with a horizontal chock tube of modern typo.

There are

the

The main jet, as will be observed,

In respect to the amount of power required to move a given

As the sectional drawing shows, car weight over them, roads vary

the instrument is very simple, and from smooth, rigid ones of con-

a point is made of the fact that any crete, which call for a minimum

Question: Is it necessary to jet can be removed with an adjust expenditure of power, to the grind engine valves each time that able spanner, as the jet proper is rutted and bumpy sandy or muddy carbon is removed? My engine screwed into a plug with an ex- ones, which absorb a maximum of carbonizes badly, and I have to ternal hexagon head. power and intermediate between scrape the deposits out rather fre-only two jets, the main and the these two extremes are those with quently. The instruction book slow runner. The latter, which asphaltic tops, which "give" cen- saya it is best to perform these functions only when the throttle is siderably, especially in hot two operations at the same time, practically closed, is in effect a weather; well bound, well com-but I seldom find that my engine's small carburetter, as the jet, which pacted ones of gravel and the loose valves really need much attention. is fed from the main float chamber, topped but level gravel road. The Answer: Probably the idea in-feeds the inlet pipe through a small difference in tractive resistance tended to be conveyed by your passage and is supplied with air in between the best type and the manual is that when the cylinder quantities regulated by a screw that worst type of road, above head is off is the convenient time can be adjusted by hand. The mix- enumerated, is auch that double to perform both operations, if they ture thus provided is on the rich the mileage can be travelled on a are needed. It is not necessary to side to facilitate starting and slow As the throttle opens, given amount of gasoline over the grind valves that are seating pro-running. former than over the latter,perly, whenever

Is the depression in the inlet pipe: carbon according to recent reliable tests removed, but it is advisable to ceases to be concentrated on and it is credibly stated that one-remove carbon whenever the slow running jet, which accordingly and-one times greater mileage can valves are ground, not only to get goes out of action, the main jet be obtained on concrete than on rid of its evil effects but to fore-then commencing. fair gravel roads, other conditions stall the possibility of well fitted being the same.. The above valves being held off their seats is sunk below the petrol level, and figures, while not purporting to be and burned by particles of detach-above it Is a chamber topped by a exact, indicate strikingly the ed deposits becoming caught under tube having at its upper end a immense saving in fuel which im-them. Scraping all incrusted tube is almost in the centre of the proved roads bring about. parts, when grinding is done, post-choke tube. While the slow runner Motorists expend much thought in pones any likelihood of this hap-is functioning, fuel passes through the main jet and rises to the level selecting care, which generate pening for some time.

set by the float in the chamber pewer efficiently and take great

above the jet, which thus corres- pains to keep them operating

ponds to what is generally termed economically, but they seldom con-

a well. sider the influence which the

When the throttle opens and the character of the roads they travel effect upon an engine, which we exerts upen fuel consumption, are reconditioning, if we sub-depression in the choke tube com-

cast iron

mences to operate on the small bole although it is often a fact that the stitute light-weight highly economical car, upon a road pistons for the alloy pistons in the diffuser the petrol in the well These is rapidly supplied to the inlet pipe, surface that is wasteful of power, formerly used therein? nses more gasoline than the in-cast-iron pistons weigh about six thus, giving a rich mixture for ac- efficient car on the best type of ounces each more than the alloy celeration. By the time the throt tle has been opened wide the whole power conserving highway. Yet ones?

Answer: It is somewhat risky of the petrol in the well has been every motorist can do his bit toward insuring the efficient appli-making a prediction of this kind, passed through to the engine, as it cation of the power developed particularly as you do not give us can flow through the diffuser faster within his car, by using his in-the name of the engine in ques- than fresh fuel can be supplied When the fluence in favour of the more rapid tion. No doubt its manufacturer through the main jet. construction of the best types of had some reason for preferring well is empty, therefore, the main Poor ronds alloy pistons and there may have jet alone supplies the necessary hard surfaced roads. are wasting gasoline faster than been something about the design fuel. As this fuel passes the main uneconomical engines are and will of the engine, which made their jet and up into the diffuser it is particularly advantageous. broken up by air passing at high continue to do so until they are se replaced by improved ones, thus Why don't you ask them how the speed through the air passage imposing a continuous "gasoline proposed 'change would work out shown in the illustration, are and It is possible fuel mixed thenceforward flowing tax" upon all who use them. The in their engine? thoughtful motorist should study that the heads of cast-iron pistons from the orifices in the diffuser. the situation and decide for him-would run enough hotter than self, as one who takes a part in those of the alloy pistons to car-slightly reduce maximum permis- public matters, whether it would bonize badly or cause preignition sible engine speed and thus maxi- This, however, is not be good ultimate economy for in this engine and it is also likely mum output.

Changing Type of Pistons. Question: What will be the

his city or State to speed up road that these heavier pistons would largely conjecture on our part. building, even though large initial: expenditures would have to be in-1 curred, in order to prevent a gigantic economic loss of gasoline. If his decision is in the affirmative, let him urge his local government to pursue a more active road building policy.

TEXAS BURR.

One of the "joys" of motoring

in Mexico's back country.

Give a long satis factory service, unexcelled by any other battery ất any price.

The Dragon Motor Car Co., Ltd. Tel C. 1246 or 1247, 35 Worg Nei Chung Road, Happy Valley,

Columbia

Storage Batteries

JOIN

ASSOC

THE HONGKONG AUTOMOBILE ASSOCIATION

A Few Advantages:- 10% Off Motor Car Insurance Free Legal Advice.. Reliable Drivers Supplied Free Mechanical Advice Associate Membership of the R. A. O. aud A. A. London.

All Coramunications for Membership etc. to

REV. G. E.S. UPSDELL Hon. Secretary,

P. O. Box 116,

ADVERTISERS

IN THIS

MOTORING

SUPPLEMENT

ARE REQUESTED

TO SEND

CHANGE OF "COPY"

NOT LATER

THAN WEDNESDAY

OF EACH WEEK.

For Rates and Suggestions apply to-

The Manager "The Hongkong Telegraph"

Tel. G. No. 1.

PACKARD

PACKARD has always meant Luxury-the Supreme

Combination of all that is desirable in motor cars.

Now Packard has announced new price levels and added an impor- tant page to motor car history.

The Packard Six-introduced seven years ago—is taday priced lower than any Packard ever sold! Thus Packard quality is made avail- able to new thousands everywhere. Recent refinements and improve- ments have added immeasurably to its brilliant performance until today's Packard Six is interna.. tionally recognized as the finest of America's smaller cars.

THE DRACON MOTOR CAR CO., LTD. Folephone Central 1246 or 1247.

23, Wong Nel Chung Road. Happy Valley.

You will find Packard cars on all the important. highways of the world.

ONLY A RIDE CAN TELL YOU PACKARD'S /

STORY