THE HONGKONG TELEGRAPH.
Pioneer Service
A consistont londor and pionoor of ty manufac-
ture, Firestone Gum-Dip- ping process produces a remarkable cushioning ro- silionce that means greater motoring comfort and free- dom from annoying tyro changes. Made in all stand- ard and millimator sizes.
Made within the Empiro.
Firestone
THE DRAGON MOTOR CAR CO., LTD.
Toloptione C. 1245 or 1247
33, Wong Nei Chung Road, Happy Valley.
A MOTOR CYCLE?
UNEVEN FRONT-
TYRE WEAR.
Why it Takes Place and How to Even it by Changing the Wheels.
MOTORING SUPPLEMENT.
curved, being higher in the mid- dle then at the 'odges. As for à largo proportion of the time a car ie running on the left-hand, sido of the road with the near-side whools towards the gutter, the car has a sort of list or tilt to- wards the loft-hand side.
It will be apparent that the effect of this tilt is to straighten
up the oft-side front wheel and in- crease the inclination on
the near-side front wheel.
The following article from the "Austin Advocate deals in an interesting way with the general Not only does this increase the subject of uneven front-tyro wear, wear on the outer edge of the and we may say that we entirely pear-side front tyre, but it actual. endorso the advice to ravorse tholy bende or distorts the tyro side- front wheels and change them ways at the point of load. As this. from side to sido, a practico which point is continually moving round wo regularly adopt with cars on the tyre owing to rotation of the our staff.
whool, every portion of the tyro We have received during the distorted sidoways and stra- last few months some interesting The movement of the tyre from ightened up in every revolution- letters from our clients, regarding the point of maximum distortion comparative wear between high- pressure tyres. From these letters to that of no distortion at all pro- it would appear to be a subject of the tyron upon the road, which duces a slight sideways abrasing which interests many motorists, and a short articlo on tyres may
is absent in the off-sido front tyre- not be out of place.
It is this sideways abrasion- On Austin cars, the introduc- which would cause the near-sido tion of low-pressure tyros coin- front tyre "to wear more rapidly cided with the advent of four-anyway, but the offort is often whool brakes. Since these intro- increased still further because on ductions, sumo motorists are un- the English tarmac road all grit der the prossion that they do and road mattor is washed down not get the same milange from by the rain towards the gutter, their front tyres. No doubt the thus giving a more abrasive aur- increased stress on the tyres, duo face for the type to run upon. to the presence of brakes on the Those aro "the main factors croase the milouge, but much de-and lead to our recommendation ponds upon the setting and ad-that when the tyres are reversad Justing of the brakes and the it should be done by changing the manner in which they are mani-wheels from side to side, which, pulated by the driver.
in addition to making the woar become uniform over the whole tread, also tends to equalize it from tyre to.byre.
Then Go To ALEX. ROSS & Co. (China), Ltd. front wheels, will possibly do which account for the difficulty
TRUHED
LACMA MODEL "A" DA KUKË
THEY have the best lines in Hongkong.
THEY guarantee their cycles.
THEY give you three months free service. THEY give the Purchaser the best deferred torms.
1/4 Down, balance to suit buyer.
Where can you get more for your money?
A.
9
J. DOUGLAS,
INDIAN,
TRIUMPH,
The Inclination of the Front
Wheels.
Importance of Correct Inflation.
Thore is another phase of the question, however, which has misled some of our clienta intoder our notice, it is apparent that From the cars which come un- believing they are sufforing ex-
is
cessive wear, whereas such is not a large prozortion of motorists do the case. It is general knowledge not pay sufficient attention to that for many years past the maintaining the correct inflation whouls fitted to the accepted de-pressures in their tyros-this sign of front axle are given a question of pressures being far alight inward inclination at the more important with the low-pres- bottom. The reasons for this insure tyra than with the old high - clination need not be entered into pressure. If the pressuro
allowed to fall too low the steer- here, excopt to say that they are connected with the steering gearing becoms hoary, the sides of the of the car. When brakes aro fit-tyres flex to too great an extent ted to the front wheals, it is de-and this excessive flexing tends to sirable to increase this inclination disintegrate the canvas walls. A for various theoretical reasons tyre-prossuro gauge should bo connected with the design, and frequently applied to the valves this was dono on Austin 12 hp. and should be one of the type spec- and 20 hp, cars when the front-ially made for low-pressure tyres. wheel brake was introduced. Those which are made for high- Now it will be apparent that, if pressure tyres are not gradunted a wheel is running at other than fine enough for the low-pressures right angles to the ground, and now in use. These gauges cost the tread of the tyre when new is only a fow shillings and should be parallel to the axis on which then every motorist's kit, for it is wheel revolves, the outer edge of surprising what a difference of The tread comes into harder con-ven 2 lb. pressure per square inch tact with the ground than the in from one side of the car to the ner-with the result that the
other will make. Export drivers outer edge will show signs of can tell by the feel of the steering wear first. As the tread wears
when there is only as slight a dif- down, however, and assumes an forence as this between the pres- angle equivalent to the inclination ure of one front tyro se compared of the wheel, the pressure be-
with the other. comes even over the whole sur-1 The introduction of cord tyro face of the tread in contact with casings, in the manufacture of the ground It is obvious that, which the canvas troads are with the extra inclination, this covered with rubber, and in the wearing of the outside edge will weaving are not interlocked in tho be more pronounced. It is still usual way, tended to lengthen tho more apparent with the low-pros-life of the wall of the tyre. Evon sure tyre, as the tread is widor so, it is easy to seu that under-in- and a bigger area of the tread in flation causes excessive floxing proportion is in contact with the and release of the walls of tho ground.
cover, which must reault finally The rosult of this combination in parting the threads or causing of circumstances lends some no-them to break through fatigue.
FRANCIS-BARNETT and torists to suppose that their tyres Over-inflation is largely respon-
Motor
Cycles
(STOCKS CARRIED )
ALEX. ROSS & Co. (China), Ltd.
Sub. Dealers-
KOWLOON MOTOR CAR & CYCLE EXCHANGE CO.
Michelin Tyres
Mean⚫
cheapest
The
in the long run.
Shipments arrive every week from France to ensure fresh goods only.
Bole agents for South China J. GIBBS & CO,, BANK OF CANTON BUILDING Phono C. 704
Phone C. 704
are not woaring well, but it will sible for tyro-ship on greasy roads,
be appreciated from the foregoing and on dry roads means bouncing.
romarks that the early wear on Er
ono side is the natural result of the fitting of four-wheel brakes, together with low-pressure tyres; and that the fear of excessivo woar is based upon a fallacy..
Reverse the Wheels. When the front tyres show dis- tinct signs of wear on the sido ofi the troad they should be reversed -thus bringing the less-worn edge to the outside. The plan waj recommend is to change the wheels over one side of the car to the other the reason for which will be seen lator. By changing the wheels about in this manner it will be found that the wear will bo evened out over the whole sur- face of the tyra and, excollenti milenges obtained.
Another interesting point in connexion with low-pressuretyres, is that the wear on the near-side. front tyru is often greater than on tho off-sido. This phenomenon is tho result of a combination of quite a number of circumstances.
It has been previously men- tioned that front whoels og Austin cars-and indeed, this is the case on most cars are not closer toge- ther at the bottom than at the top, so that the tyres tond to run on their outer edges.
Effects of Road Camber. Modern roads are camborod, that is to say, the surface is
JOIN
THE HONGKONG. ÁUTOMOBILE ASSOCIATION
A Few Advantages:
10% Off Motor Car Insurance Fros Legal Advice. Reliable Drivers Supplied Tree Mechanical Advice Associate Membership of the, 'B. A. C. and A. A. London.
All Communications for Mombership oto. to REV. G.E.S. UPSDELL Hon. Secretary,
P.O. Box 116.
SATURDAY, APRIL 9, 1927.
bewing the ingenious jangement of roller curtaing which are entirely concesiad jyban rutand, but which may En Jowned in thirty komada.
An Open Car on Pleasant Days -A Closed Car When it Rains
¬HANGES in the weather need. never keep you from driving a Studebaker Standard Biz Duplex-Phaeton in comfort.
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G8 1,710
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1,485 tor, the stamina of the "Studebaker chassis, and 1,70.
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2,670
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Let us give you a dem-
2,031
2,220 enstration of this beau .. 2,756 tiful car.
THE HONGKONG HOTEL GARAGE. (The Hongkong & Shanghai Hotels, Ltd.F -Car Sales and) Phone Service Phone Accessories ƒ C. 4759 and Parts C. 4602
STUDEBAKER
BUILDERS
OF QUALITY
VEHICLES FOR 75 YEARS
HUDSON
SUPER-SIX
COACH
G$1,960
The Greatest Hudsons of All Time
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All Prices Include Complete Special Equipment.
THE DRAGON MOTOR Car Co.,
LIMITO 15
33 WONG NEI CHUNA KOAD
HAPPY VALLEY
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