1935-03-05 — Page 3

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THREE HUNDRED MILES

AN HOUR!

Can Campbell Or 'Blue-Rird'

Stand The Strain

Three hundred miles an hour or, five milles a minutes!

Can Sir Malcolmi Campbell attain such an average in re- cord-breaking conditions over a kilometre or a mile? It means covering a mile in 12 seconds!

To many people this probably seems a fantastic effort, but plainly, if any man urgently desires to be the first driver to reach that historic speed, he has every right to try; every one admires the spirit and courage of a man who indulges in such daring adventure.

The récord Itself in plain figures written "in a book, care- fully checked not only, by the Americans but by the Interna- tional Association, subjected, in fact, to every sort of scrutiny, becomes a landmark among re- cords, and almost to the utter- most ends of the earth the news of this speed spreads with, as- tonishing rapidity.

Now, in the case of "Str Mal- colm's car. of course, the whole. effort is entirely personal. The results cannot be used commer- clays since the car is not spon- sored by "a motor car manufac- turer, but is bullt for records, and for records extending only over brief seconds of action once in a year.

The 36,500 c.c. Rolls-Royce 12- cylinder engine is an aeroplane power unit. It has been stressed in the Schneider Trophy races more than it will be at Daytona. It is not designed for land work at all; the data obtained there- from are interesting but not use- ful technically. It is an engine that was available without diff- culty or undue expense, and its use is justified on that score.

Similarly, the chassis is not à motor car chassis, but a special form of vehicle designed and ré-engined since.

The whole machine, weighs. when ready for action, come- thing like five tons, and it is in- teresting, therefore, to consider for a moment why:300 miles an hour are 50 d'icult with 361 tres of supercharged engine, for In the matter of relative speed the smaller cars, by comparison, appear to show up to greater ad- vantage.

Let us take as an example for the purpose of comparison Mercedes of but four tres cap- city which last year achieved 197.35 m.ph, as an average of runs in two directions, and which certainly achieved 200 m.p.h. in the process. Be it noted:" that this car weighs just on 15 cwt., and the power of the engine" is probably 500 b.hp. as against Campbell's 2,500 b.h.p.

Then the 750 c.c. four-cylinder supercharged M.G. has recorded 128.62 m.p.h as an average over a kilometre with, one would sup- pose, about 150 hp, and in that case the chassis weighs 104 cwt. With its tyres, water and all, the entire machine, ready for action, weighs about 1,450 lb.

"The comparison, you see, is in- teresing, but curiously enough not conclusive. The limitations to the speed of the Rolls-Royce- Blue are drastic, quite apart from any question of power-weight ra-" tlo, and are partly geographical, If it were possible to find twenty. miles of straight, fiat, wide course a speed of 300 miles an bour. would be comparatively easy for Blue Bird, but in the narrow limits of Daytona Beach there is. *not sufficient room to accelerate and Just as little room in which to pull up. That alone. very treatly reduces the speed direct- dy, and in a sense indirectly.

In the confined space a car such as Blue Bird can only sc éelerate sufficiently rapidly if wheelspin is reduced to the mini- mum, and that is possible only by deliberately increasing the weight of the chassis, though in the latest attempt twin bakk tyres are being used to minimise allp In other words, Blue Bird's power weight ratio has to be bad in comparison with that of small er cars. For them a course which Tould be quite unsuitable for Blue Bird: allows opportunities for obtaining miles of straight, fat ford the Mercedes might at tain 250 mp, and the MG. 150 mpil

Cost of the Record-Breakers

There is this interesting side. light in discussing cars and re- cord speeds. The Mercedes, the M.G. and the Maserati are bulls as part of the experimental work of factories building motor cars, the data obtained are eventually applied to those cars, the pub- licity attained may sell them, the commercial and practical bene- its are great, anu though the cost of a lightly built car, such as the Mercedes will be very high, it will be nowhere near as high as the cost of a machine of the Blue Bird type destined for Day- tona, and designed from begin- ning to end, engine included, for that record That is one of the reasons that makes some people doubt the practical purpose of the Daytona-type record from another angle, for the cars en-.. gaged in these world's record achievements have for some years departed far from practical con- siderations. Their engines are the engines available at the mo- ment for some other form of transport; they are not practical chassis in any sense.

In other words, while the au- tomotive world learns B great

deal of valte from such records as these set up by the M.G., the Maserati and the Mercedes, the lessons accruing from the giant Blue Bird's great effort are in the main useful only to designers of future cars of that type, a huge vehicle of Ittle or no to a practical world. ·

use

Where the Tests are of Value

There is one, possible exception to this statement, for wind re- sistance plays a very important part in these record attempt Wind resistance increases not in direct relation to the velocity but with the square of the velocity.. At speeds in the neighbourhood of 300 m.p.h., therefore, it is a most important factor: Wind tunnel experiments and calcula- tions based upon the data thus obtained have been used to re- duce the wind resistance by streamlining the giant car, and the actual record rung may, therefore, provide valuable

E means of checking the accuracy of data employed for its smaller brethen.

Probably such attempts as the world's land speed record are of use to the manufacturers of the tyres used, for it is reasonable to suppose that the Dunlop Com- making and testing Bine Bird's pany's research department "In

has obtained knowledge which is useful in the manufac- ture of tyres for normal purposes.

tyres

It is also interesting to examine the "actual times for these record. rubs. The present record stands at 13.23 sec. for the mile, the speed being 27211 m.ph If Bir Malcolm is successful in achiev- ing 300 m.p.h. the time will be 12.sec., in other words only 1,23 sec. less than his existing time. If he falls in the 300 m.ph, at- tempt and only succeeds in re- ducing the time to 13 sec., Bay. ing less than 'sec., he will have

HONG KONG DAILY PRESS, TUESDAY, MARCH 5, 1935.

TO-DAY'S RADIO PROGRAMME

Broadcast by Z.B.W.

on 355 Metres

TUESDAY

12.30-2:15 p.m.-European

gramme.

Pro-

12.30 p.m.-London and New York Stock and Commodity Quota- tions, Manila Gold Stock Qua-, zations.

«12.35-1. p.m.-Recorded Music.

1 p.m.-Local Time and Weather

"Report.

1.03 p.m.-Recorded Music- 1.30 p.m.-Reuter Press. Bulletins,

Rugby Press News, etc.

1.40 p.m. (Approx:)-A Relay of the Rotary Club Tiffin Speech from the Hong Kong Hotel Roof Garden-Dr. P. V. van Stein Calienfels, OBE, ön "Pre-History,"

2.10 p.m. (Approx)-Close Down. 4-7 p.m.--Chinese Programme, 7-11 pm-European Programine. 7 p.m-Closing Local Stock Quota-

tions. 7.03-7.28.

Operas. Vocal Gem. Mignon (Thomas). Vocal Gem-Tales of Hoffmann

(Offenbach)..

p.m.

Excerpts from

7.28-7.42 p.m.-A 'Cello Recital by

Pablo Casals.

1. Musette (Bach).

2. Mazurka, Op. 11 No. 3 (Popper) 3. Spanish Dance (Granados, arr.

Casals).

4. Vito Spanish Dance), Op. 54.

No. 5 (Fopper). 11

7.42-8 pm---Song Memories.

Medley of Old Time Songs-

Sydney Gustard (Organ).

60 Years of Song-The London

Palladium Orchestra,

8 pm-Local Time and Weather

Report.

8.03-8.20 p.m-From the Studio.

Hawaiian Selections by "The

Waikiki Trio,"

Programme

1. My Mokihana Wreath,

2. Hello, Aloha! How are you

3. When the Hula Maids are

Strumming.

4. Honolulu March,

5. Song of Hawaii.

8.20-9 p.m-Symphony No. 5. in E Op.95 ("The New

Minor.

World") (Dvorak)-The Royal Albert Hall Orchestra.

0-9.20 p.m.--From the Studio.

"Topical Talks on the United Kingdom" by Mr. G. C. Pelham 9.20-9.30 p.m. Rosenkavalier Waltzes by Richard Strauss. 9.30 p.m.-Reuter Press Bulletins,

London 1 p.m.

Stock and Commodity Quotations. 9.35-10.05 p.mi-From the Studio.

M. Li Chor Chi-Tenor. Miss Valerie Morris-Pianoforte.. Accompanist-Mr. J. G. Charlton.

Programme

1. Mr. Li Chor Chi:-

(a) Ah! Sweet Mystery of Life

Herbert.

(b) Happy Summer Song-

Kahn,

2. Miss Valerie Morris:-

(a) Prelude in B Flat-Bach.

(b) 1st Movement, Beethoven's

Sonata, Op. 10. No. 2.

3. Me L cho thị

(a) Recondita Armonia from

"La Tosca"Puccini. (b), Primavera-Tirindelli.

4. Miss Valerie Morris:-

(a) Resain Berceau --- Selim

Palmgren.

(b) Ballade, No. 3-Brahms. 10.05-11. p.m.-A Relay of the.

Dance Orchestra from the Ma- jestic Ballroom. (by courtesy of the Management).. 10.30 p.m.-Reuter Press Bulletins. Rugby Mid-day Press News, -Further London Stock 'and'

Commodity Quotations.

11 pm-Close Down

Berlin Badio 9.00 p.m.-DJA, DIN Announcement.

(Germ, Engl) German Folk Song." ***Programme Forecast

Engi):

(Germ,

put the speed up to 277 m.p.h.9.15 p.m. Short Musical Pro- Thus, a quarter of a second im gramme ME provement over his previous re- 9.30 pm The Leipzig Trade Far cord mean time as sufficient to 19.45 pm News in English on DJA gain the extra 6 mph. demand- ed by the International body be- fore a record of this nature will be recognised.

The following table is, there- fore, highly interesting at this juncture:- Time in Bec.

and in Dutch on DJN 10.00 pm- National Broadcast:

Carnival Turnout,

The Good, Ship Folly" 11.15 p.m.--News in German on

DJA and DJN

11.30 pm The Good Ship Folly

(continued)

12.15 am News in English on DJA

and in Dutch on DJN 12.30 am-Close down DJA, DIN

(Germ., Engl.)

Manila Radio

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