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PETROL MOTORS AND

MOTOR CARS

THE BADMINTON LIBRARY

MOTORS AND MOTOR-DRIVING

BY SIR ALFRED C. HARMSWORTH, BART. With contributions by the MARQUIS DE CHASSELOUPLAUBAT, the Hon. JOHN SCOTT-MONTAGU, M.P., R. J. MECREDY, the Hon. C. S. ROLLS, Sir DAVID SALOMONS, Bart., HENRY STURMEY, C. L. FREESTON, J. St. LOE STRACHEY, the Right Hon. Sir J. H. A. MACDONALD, and others.

With 14 Plates and 160 Illustrations in the Text by H. M. BROCK, H. TRINGHAM, and from Photographs. THIRD EDITION, Revised.

Crown 8vo. Cloth, 9s. net.; Half-bound, 125. net. Box to hold the Volume when Motoring, 2s. net.

ENGLISH AND AMERICAN STEAM CARRIAGES AND TRACTION ENGINES

BY WILLIAM FLETCHER, M.INST.MECH.E. Author of "The History and Development of Steam Locomotion on Common Roads," etc.

With 250 Illustrations. Medium 8vo, 155. net.

LONGMANS, GREEN, AND CO.
LONDON, NEW YORK, AND BOMBAY

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LONGMANS, GREEN, AND CO.

39 PATERNOSTER ROW, LONDON

NEW YORK AND BOMBAY

1905

All rights reserved

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PREFACE.

THOUGH many works exist on the subject of internal combustion engines, which contain practically all that is known about them, it is thought that there is no book written entirely from the designer's point of view. The present volume is intended to provide designers and draughtsmen with reliable formulæ and information, in a readily accessible form. The writer knows, by his own experience, that for a book to be of value in a drawing office, it should be brief and to the point. It is seldom that a draughtsman has time to wade through many pages of descriptive matter in order to find a formula and the method of its application. Hence in this work brevity has been the chief aim of the writer.

The formulæ given are all the result of actual practice, and only those which have given good results in use have been included. It is hoped that by these formulæ the work of designing a motor, and the various other parts of a motor vehicle treated upon, will be reduced to a minimum. Numerous examples will be given to make the application of the formulæ as clear as possible.

The mathematics used have been kept in as simple forms as possible, not only to save time, but also to assist those to whom the higher mathematics are unfamiliar.

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