MIGHTY ATOMS

NZ Truth, Issue 1079, 29 July 1926, Page 16

MIGHTY ATOMS

New 1 500 c. c. Engine

Big things are expected of the 19?6 racing season on^ihe Continent, owing to the maximum cylinder capacity for the Grand Prix having been fixed at 1500 cubic centimetres/ This is only three times the size of the ordinary 3'/2 lh.p. motor-cycle engine, -which is about 500 c.c. THIS limit having been fixed—a drop • ■ of 500 c.c.T—most of the new Continental racing/cars are being fitted with engines of that size. From accounts received to date, even more power is being obtained from these small power units than from the oneth;rd larger engines m use last year. In 1925 several 1500-c.c. cars registered over 100 miles an hour,, and one or two using super-charges up to 120. This, year, however, it is stated those speeds will be greatly exceeded. Designers are more and more inclining to, the use of multi-cylinder engines, capable of tremendous speeds. As an instance the Flat Company is building a 12-cylinder engine of the six-a-side V type, which on the bench have "revved" at 8000 to 9000 per minute. v ( One of them is reported to have actually indicated 12,000 without being damaged! These engines are developing 140 to 160 h.p. The Darracqs are building a straight f-ight with a normal speed of 7000 revolutions, and a brake horse-power test or well over the hundred. The Bugatti will be similar to the last year's model. ■ but small and highly super-charged with' a much higher revolution'rate.

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