1931-06-30 — Page 2

THE H.K.V.D.C: TRIAL.

SOME POINTS ON TUNING FOR THE TRIALS NOVICE:

BY CAMSHAFT.)

The news that the B.K.V.D.C. motor section trial this year is to be held over a very sporting courao is of great interest to local motor- cyclists, since this type of trial in the Colony is something of an innovation. It will no doubt pro- vide many of the competitors with their first experience of country riding under trials con- diticas, and consequently with the first occasion, on which they have felt that they should subject their machines to some sort of specialised tuning nad preparation befitting u competition.

cross-

It is to these riders that the following remarks are really ad. dressed for they will deal only with the most elementary aspect of tuning, and lay no claim to a 'com. prehensive survey of the funda mental principles, and, if they are followed to the letter the rider will

realise that he has done little more than subject his machine to a fair

"

HONG KONG. DAILY PRESS. TUESDAY, JUNE 30, 1931.

SPARKS

FROM THE PLUGS

THE LIGHTER SIDE. A.J.S. TRANSVERSE:

decent overhaul. In many cases) even this will not be necessary, for you must remember that you aṛo preparing the bus for what, in England would be considered a fairly easy event, not for the T.T.. and if you are the owner of wa up-to-date model which you habitually keep in good tune there in litle you need do in the way of preparation.

THE TYRANT,

I know a haughty motor-car That owns a little man

On all his other pastimes

It acts relentless ban;

П

He can't do anything he likes, Although he thinks he can.

It lets him 'wear a leather coat".

And take the driver's seat, And make preliminary sounds

And do things with his feet; And, when it thinks it will, it starts

And ambles down the street. It will not take him very far,

It does not like the rain, And when he starts on doubtful

day's

45

It takes him home again, And this high-handed action he

Ende vours to explain.

He tells you that its "not much

fun,"

He's 'sure that you will find An omnibus, or tram, or train, Or something of the kind. The roads are really awfully bad;

He hopes that you "won't mind." Then, armed with rolls of ritual

rag.

He gently slips away, And pours libations liberally

In humble hope to stay

The wrath which may refuse to take

Him for his holiday.

I hope it will be kind to him'; .

I hope one day, that I May meet him trending country

wards

Beneath a summer sky, Propelled by his oppresser in

Pretended majesty,

*

Mrs. A.The lecture at our club next week is on auto-sugges tion. You must come."

Mrs. B. Anto-suggestion? If it's a new scheme to get one's hus- band to buy a car you can count me in,"

when your engine is warm and you can find out which clearances suit your engine best.

The Secret of Tuning.. The real secret of tuning consists of little more than ensuring that everything is just right, though this rightness must extend to the most meticulous neearney in all parts,

Gear Box and Bearings, even to wheel balance. That is a definition good enough for any Strip the gear box, wash it out dictionary, and is really the main with kerosine, check up the bearing principle on which machines aro and refill with fresh oil. Pay at

:

DETAILS OF A POPULAR.

BRITISH MACHINE.

The Engine combines that abso lute smoothness of running which is usually only to be found in a four-cylinder engine. Tho two cylinders which are set at an angle of 50 degrees embody the very Latest design features.

SMOOTH TIRES AND

HIGH SPEEDS.

NON-SKID TREAD IS ESSENTIAL FOR QUICK

STOPPING

and provided a deeper non-skid tread, giving 5 per cent, more non- skid wear to the tyre and grenter safety than over before.

RUST PREVENTION IND

FORDS.

BONDERIZING THE WHEELS.

The majority of motorists now. Taking another step in the pre- realize that when they buy a set vention of rust, the Ford Motor The AJ.S. Transverse Twin

Special attention has been given

of new Firestones with a real non- Company is now Bonderizing the wheels, fenders and other parts of Cylinder Model strikes a new note!]

to the combustion chambers and

skid tread design" they are making the Ford car and truck that are in Motor Cycle design.. It pos

The responsibility for control and seases overy desirable feature of mo ports, and these are such that they

afford maximum efficiency and stopping ability of the car is a wise investment in safety. The most likely to be scratched or Firestone cross and square design marred. The exposed metal parte dern motor cycling, auch ne Bience,

power output. The two connecting placed in the tyre tread in a state-

has hundreds of sharp non-skid of the Ford car, are made of ruste Smooth Running, Perfect Steering

ment by Benjamin. G. Eynon, cont- in asual A.J.S, design, and have and Road Holding qualities, Comode are mounted side by aide as

a single row of rollers to each. The missioner of motor vehicles of the angles to prevent skidding. The less steel which not only will not main shafts are carried on ball State of Pennsylvania. Commia tread is scientifically designed and fort, Accessibility, Splendid Acce leration and

& High Average bearings, and the method of driv-sioner Eynon's statement is as fol-tested so that the Firestone tyre or blemish. Speed.

lows:-

ing the two sots of valve gear in by means of chains with patent tensioning device, similar to that employed in our famous overhead camshaft modela The whole runs in an oil tight case and therefore works under ideal conditions,

carried on

Drivers operating care with tyres worn smooth should have their car under control at all times, particularly when the pavements

rust but is also immune to tarnish

Clings to the Road,'

No matter what kind of a Brish "It was in the interest of a motor car has, there is always. greater freedom from slipping and the possibility, of the enamel being skidding, and greater riding com- scratched, Often this happens fort that Firestone brought out the while the car is parked. first balloon tyre, marking another

When the surface is scratched." new epic in tyre building. This and the bare metal is exposed it Drivers of such ears are prac-development was made possible rusts. Furthermore, the rust acts

are wet.

largely through the Firestone Gum-; Dipping Process. Then still an other patented factor for safety and strength was developed, the Firestone Patented Double Cord Breaker with two extra plies under the tread giving the trend greater adhesion and support.

The Twin Cylinder Engine is set across the frame, the cylinders projecting slightly on either side, thus both eylinders are in an equal

The mounting of the dynamo air stream, which is not deflected by the front mudguard, consequent and distributor are ly both are equally and perfectly either side of the engine. The for mer is driven by a flat belt which ecoled. No multi cylinder engine by its very nature cannot damage tically helpless when an emergency the dynamo in the case of a back-confronts them. When brakes aro with the cylinders in line can

fire or violent acceleration.

suddenly applied there is no trae claim that both cylindere run 'at'

The robust and scientific construe-

frame is remarkable. tion or resisting power from worn the same temperature, The A.J.S. tion the Transverso Twin Engine is built Large diameter tubing of fine qual tyres against the pavements.

"Firestone brought out the first on car lines, the valves being ity is used throughout and has generous proportions in the single housed in the cylinder block, not top tube. This frame allows the non-skid tread, and this has always been one of the greatest factors for in the head, thus facilitating do engine and transmission to be car ried well down, consequently a kw

"Tyres to-day cost less and give carbonising and valve grinding centre of gravity is attained ensur.afety in the automobile industry,

two riding conditions Despite this full research facilities to tread de in history, so that good tyres are The head is of aluminium and is ing safety and security under all Firestone has always" devoted its far greater value than ever before

low centre of gravity the ground camshafts and all the valve gear earance is nearly e inches makingvelopment, and this year has made fundoubtedly the most economical iz

improvements in the tread centour [surance of motoring safety," are the very latest car practice, the machine ideal for Overseas use, including chain drive to the cam- shafts Tappets, Valves and Valve springs are totally enclosed, yet readily accessible for inspection or The adjustment.

Carburettor operated by Twist Grip control, is placed between the two cylindera and is therefore readily get-at-able.

quickly

detachable. The

From the engine the drive is taken, to the gearbox by a totally enclosed propeller shaft, mounted at each end on flexiblo self-centring Hardy couplings, which ensure that no strain is transmitted to either engine or gearbox bearings. This primary drive does away en- tirely with the front chain and re. quires no adjustment, lubrication or attention whatsoever. It is

absolutely, silent in operation, and

the engine and gearbox bear- inge are not subjected to any load which is exactly opposite in the case of an all chain driven ma chine. This in line" drive is converted into a right angle drive, by means of spiral bevel gears in the gearbox which are silent in action and indefinitely wear re sisting. The final drive is by n short chain totally enclosed to. a quickly detachable rear Starting is by foot pedal on the righthand side of the machine.

wheel.

vetted for the most important tention to the gear, adjustment, and events; but don't allow it to scare pin all castellated nuts in the gear you, because it takes expert tuners control; oil all bearings in the gear weeks and months to ensure that lever unions.

Overhaul the wheel bearings, and everything is just right, and the job in its entirety is one which check the wheel alignment; fit new the average amateur is incapable of and heavy tyres if you can afford tackling. Still, you can do all that it, otherwise stop all the holes with is necessary to get your machine in dope, and examing the patches on sufficiently good trim for the event the tubes, renewing those which we are concerned with, and so the seem old or give evidence of weak following rules are apperided for ness. Be careful to replace the tyre on the wheel in perfect truth; as I your guidance.

have experienced serious wobbles through the rear tyre not being in Take the engine down, clean and perfect alignment on the wheel. decarbonize it thoroughly, and

Above all, submit the forks and elkok tip. "all" "bearings, replacing steering assembly to the most rigor those that pre seriously worn. Pay ous inspection; remember they are great attention to the valve guides going to be subjected to stresses and valves; 'guides that are worn greater than any soads, even these trolled from an Instrument Panel. JUST be renewed if you want any in Hong Kong, can provide, and on the top of the chromium plated" efficiency out of your engine, and valves that are really badly pitted it, source of embarrassment to petrol tank, the current for igai-

For Your Guidance.

The frame is of the full cradio type with Duplex front and rear tubes, and owing to its scientific, design and low centre of gravity, the steering is irreproachable.

The electrical equipment is con-

have your forks break when you are. tion and lighting being generated- batting along at 25 over the rough by a dynamo and 6-volt accumula stuff Redond

be

tor with coil and distributor.

Tho, machine is adequately mud- guarded, the back being 8 inches wide and is hinged for easy wheel removal...

Much research and experiment has gone into the production of thin model which has features and

characteristics al its own.

There

should be scrapped and new ones fitted, es excessive grinding-in will soon ruin the valve seate and hore

Driving Chaina. we have an important point;, the

Inspect and adjust the driving valves must seat perfectly; they should be ground in first with chains, renewing old, ones if por metal polish; if you want to take sible;, if the chain appears to be the job to the absolute limit, you stretched in parts only, don't scrap can use jewellers' rouge after that it until you have examined the Remove all high from the sprockets, for one of them may piston with a fine nail file, and unevenly worn. As I said at the polish up the top with metal polish, beginning of this article, I have end, if you have a friend in an only touched very lightly on the engineering shop, ask him to buff most elementary principles of the it up for you at the works. I am tuning game, but if á machine is

The whole layout is ecmpact and not going into the question of vetted as I have indicated, it will place it in a class by itself decarbonising the engine in detail, at least be in better: trim than the

very great majority of machines very part is readily accessible, in but will mention on passant that which are driven day in and day in workmanship, performance and inlet and ox out without any care, at all, and, appearance it will be found to live

since one of those her basergewill.

Eputation of up

is a fascination about it which can

ence it possesses just that "some only be realised by actual experi thing different" which immediate

haust ports of the cylinder head to probably be taken out of its garage, highly polished.

old, rattling, filthy and on its last A... Check up, the valve clearances; legs, to win the forthcoming event, this is a job best done on the road. You at least wont be able to blame tien will reveal that this is most

(Continued on next Column.)

your bike for the terrible show you put up in your first trial."

A glance through the specifica

complete and comprehens

CHANGE

ΤΟ

THE

RED

RING

The red ring where tire wall meets tread is the.. hallmark of ludia Super Tires, Enthusiastic users of India Super Tires know, from experience, that the fed ring is their guarantee of service from their tires.

Built of the very finest materials-strong, eluetic cord fabric-pare amber friction-firm, long wearing, ground-gripping tread-India tires will outwear, outrun And their black beauty with the any tire made. distinctive red strips adds greatly to the appearance of any cur.

With India tires and our complete service, you have double assurance, of complete tire satisfaction.

INDIA TIRES

Master of Mileage.

as a wedge and creeps under tho enamel causing it to peel. Conse quently the car zoon takes on a arabby appearance.

In the manufacture of the Ford

the wheels, fenders, running board shields and front splash pans are now treated with Bonderite, a treatment to diminish rusting, be cuamel should be scratched even to such an extent as to expose the fore they are assembled. If the raw steel, this treatment will pre- vent the growth of rust,

VIONI

INDIA

SUPER SERVICE

TIRES

W. R. LOXLEY & CO.

Telephone: 22285,

ork Ball