From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Magazine article discussing Paris race news, worm drive transmissions, and the Grand Prix route.
| Identifier | ExFiles\Box 2\6\ B002_X 140 141 157-page170 | |
| Date | 13th February 1912 | |
| The Motor NEWS FROM PARIS.—Contd. the race. Final entries for the race will be received until the evening of 1st March, at double fees. From private information received from New York, it is evident that there will be no American entries. The American firms having paid the greatest amount of attention to racing at home, appear to be indifferent to speed tests abroad, and those firms interested in securing European trade have not devoted much time to a study of racing. Worm Drive: An Expert's Opinion. French engineers as a whole have shown so little enthusiasm for worm drive that it is most interesting to obtain the opinion of a man of such experience as M.{Mr Moon / Mr Moore} Henri Brasier. Writing to 'l'Echo des Sports,' the eminent French engineer declares that he has proved to his own satisfaction that 'a carefully produced worm and worm wheel are as efficient, at all speeds, as bevel gears; that they are most agreeably silent; that there is no appreciable wear; and that the temperature of a worm-driven rear axle is no higher than that of an axle with bevel gears.' 'The reason why I have sought to adopt worm drive to small cars,' writes M.{Mr Moon / Mr Moore} Brasier, 'is most simple. Small cars have small motors which are obliged to run at a high number of revolutions, and in order to provide for the comparatively low number of revolutions of the road wheels, when on direct drive, it is necessary to fit a very large crown wheel and a very small driving pinion. But we are limited in the diameter of the crown wheel, and the driving pinion must consequently be made smaller. Nevertheless, this small pinion does what is asked of it, and even does it THE GRAND PRIX ROUTE. (1) The Chateau de Dourmand. (2) The road near St.{Capt. P. R. Strong} Martin en Campagne. (3) Turning after the bridge at Dourmand. (4) A straight bit of road near Saint Martin in Campagne. (5) Sharp fork at Neuville. (6) The descent at Eu. (7) A sharp bend at Eu. Handwritten text: For Mr Royce File Worm axle From D | ||