CAR VALVES.
Cooling by Salt.
Solution.
BANKING ROADS.
[By H. Thornton Rutter.]
THE HONGKONG TELEGRAPH. MOTORING SUPPLEMENT., SATURDAY, SEPTEMBER 27, 1930.
change even in racing car engine valves.
Sater Curves.
Mention of the road speed of public service coaches reminds me that "Notes on the lay-out and construction of roads" have recently been issued by the Ministry of Transport.
After the efforts made by the retain tho Morning Post to' beauties of the countryside, it is An interesting novelty of a pleasing to read in this memoran- revolutionary character in motor-dura that "the Ministry specially ing was shown me last week in afdesires that every care shail bo set of sult-cooled mushroom type taken not merely to safeguard motor-xisting amenities, but to add to valves, working in
them." omnibus engine...
I should like to impress upon A section of thess valves showed the salt mixture in the hollow all road improvement boards that valve stem and seating head. As a large number of curves and soon as the engine reaches its bends on our highways could bo ordinary working temperature, made much safer by banking the outside are. so as to keep vehicles | the salt in the valves melts
the at all speeds naturally on The rapid motion of the valves,left-hand side. -up and down, opening and closing the valve ports,. circulates this
The memorandum.suggests that
11
salt solution, which, by its high minimum are of 1,000 fect cooling value, rapidly removes the should be aimed at on curves, or additional width of heat from the valve sent. Conl-that ing the poppet type of mushroom carriageway should be provided valve head has always been one of where the are's curve is less than
difficulties automobile en-1,000 feet.
the
gineers have sought to overcome. In India, several road curves, The sult-cooled valves are a new Built by the Engineers Corps, banked on well- patent and at prevent have been have been iested only on heavy commercial calculated angles similar to a vehicles, marine engines, and racing track. but, of course, not tractors with slow revolving so steep as at Brooklands, and this motors. Whether they can with-has had the effect of widening the stand the extra rapid motion of read.
a car engine valve that has it engine flywheel revolve from 4.50 to 6,000 revolutions per minute is a matter of practical test.
Four Advantages.
I am informed by the patentees that these salt-reoled valves, have four important advantages over other types. Firstly, they ran at *black"
A render has written to me stating that, where this was done. the inspecting officer thought the road had actually been widened. It had not, but the banking gave it that appearance. Also it made the road much safer for trafle generally.
Inefficient Brakes,
UNIQUE MINIATURE MOTOR,
LB. Hubbard, Los Angeles inventor, shows how his It small motor may be used as an aircraft engine starter. will crank this giant Liberty millor at the rate of 500 revolutions a minute.
only there is a succession of roller
By Don Roberts. į Los Angeles, Aug. 19-Eiphit skates going in a complete circle." By a twist of the centre chum- years of experiment have resulted!
be reversed in a radically designed motor ter the motor can small dimensions that is said immediately. Hubbard displayed run on air, steam, carbon dioxide his by operating a drill equipped or any substance with power, with an air motor. It could be
way without seeming to harm any thing.
.
in conditions where A campaign recently carried announces L, B. Hubbard, its in-reversed from great speed one ordinary valves operate at "red" out in many of the cities inventor. temperatures. Secondly, as they various states of America has
Hubbard's announcement fol-
"The horsepower of this motor are operating at a much lower revealed that one-third of the cars lows closely upon the exclusive temperature than uncooled valves,
freak at 100 pounds pressure and 1,000 use have defective brakes. NEA Service story of a in there is
is about three," says lessened tendeney 1
"Double the pressure towards detonation (pinking and The Detroit tests showed that 10
per cent of the cars in use had racing car being constructed by rpm.'s
H. A. Patterson, motorcycle speed Hubbard. pre-ignition.
faulty brakes or headlights champion, far
use at Daytona or the revolutions and you double Thirdly, this lower temperature mostly the former--and that 5 per Beach next summer. Patterson the power. Thus power is limited of working eliminates valve burn- cent. were defective in steering.
may use the Hubbard air motor. only by the amount of strain the metal will stand and it hasn't ing, distortion, gritting and wear.j and lastly they increase the fuel consumption by lessening the ten- dency for detonation with weak gas mixtures in the cylinders.
at
As motor-coaches travel apeeda varying from 40 to 50)
can be
I wonder how London, Man- hester and Glasgow would fare inier such a campaign. It is an portant matter, now that the new Road Traffic Art.will soon be in operation.
Under all "third party" com-
sub-and other such details.
In the NEA Service story broken yet." motor similar to that being mana- factured by Hubbard was describ- ed; and, according to the inventor.
considering
Patterson motor.
is
AUTO FEE FIGURES.
hi
Hubbard's shop is situated at
Weight is used as the basis of miles an hour on clear, open roads, pulsory insurance, the owner of Glendale, Calif., near Los Angeles. fixing registration fees in 20 I rather fancy the extra cooled, the car has to declare on apply-He is one of 10 brothers who states, while horsepower is the
basis in 13 states. Other stan valve would help in lowering run-ing for a policy that the vehicle have devoted their lives to ning costs, as well as saving is in perfect working order, which
and enbie inch displacement. labour and money in repairs, if all includes effective brakes, steering mechanics. Two of the brothers dards are cost of the car, value
are employed in the factory. these advantages
This air motor has no crank-) stantiated in practice:
If a test proved that the brakes
Hubbard has patented an It is, at any rate, an interesting were inefficient, it is doubtful shaft, ignition system or carbure- the combustion! subject in these days of almost whether the policy would holder., common standard of valve design. good or the claimant be paid in application of
principle, however, that uses a It may bring about a revolutionary case of an accident.-Ex.
carburetor and one spark plug.
Has Extreme Speed. According to the inventor, the timit of power development in the tiny motor is unknown. He has operated it at 15,000 revolutions a minute developing more than 100 horsepower and believes it will run faster. The small sizel of the motor makes this power) output almost unbelievable.
Safe!
NE
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Flash on your Eveready. Flood the spot with safe,brilliant, unfai}- ing light. Always carry a depend- able, durableEveready Flashlight the with Eveready Batteries world's finest flashlight.
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สม
Here is how it works:
་
The motor ease is an ellipse, or if you prefer, an oval. Centred in this is a shart from which emanate six tiny cylinders of small bore and short stroke. The cylinders are placed as in A radical motor.
The pistons are free, withou! connecting rods, and have, at the upper end, a, roller bearing which bears on the oval shell when the piston is forced to the upper endi of the cylinder.
Attached to Wheels!
Central to the cylinders is a chamber about which the cylin-! ders revolve, opening and closing thereby the valve ports.
Now, upon feeding compressed air into this chamber, the pistons are forced out in two cylinders opposite each other, or toward the most distant point from the centre. Passing that point, the revolving cylinder group opens two valves, closes two more and the cycle is thus completed.
The entire motor as developed now weighs about 20 pounds and is readily adapted to launching gliders and to starting aircraft Hubbard proposes 15 motora. build an automobile with such a motor in each wheel utilizing steam as the power force.
The advantage of the principle. involved lles in the instantaneous power generated, Hubbard says. The full power is always there and increases evenly upon the application of more pressure from the fuel source.
Roller Skates Give Idea.
"I got the idea a long time ago," Hubbard relates. "When I first tried on a pair of roller skates, I stepped out and immediately my: feet went every which way. The harder I pressed down, the faster they went until eventually they went straight up in the air. This motor applies that. principle-
J
POWERFUL, Yes
and with this power, big car
design that assures
long life.
Many thousands of Pontiacs have been bought primarily on the spec- tacular performance of this luxurious car! Owners of costlier cars are amazed at the ease and speed with which Pontiacs pass them on steep hills and level stretches.
You'll find other powerful care-you'll find other fast cars--but you'll find too that most of them lose their sparkling performance after 10,000 miles.
Pontiac's power is built into the engine to last! When many other cars begin to wear and need overhauling Pontiac is at its zenith-full of virile performance whether the throttle calls for speed or power. Its parts are made from finest quality big-car formula metals-fitted to fine, exact clearances tested and proved.
If you are contemplating buying another big car-take a ride in the new Pontiac Big Six. You too will agree that you get big-car value at less cost to buy and maintain.
PONTIAC
Big Siz
Product of General
Motora.
THE ORIENTAL MOTOR CAR COMPANY
303-9 HENNESSY ROAD ·
Telephone 20406.
21-38
"This is the rough, bumpy road on which I wanted to demonstrate
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TELEPHONE 30228.
39 WONG NEI CHUNG ROAD,
HAPPY VALLEY: