Shrouded in mystery were the British planes and motors, entrants in last autumn's Schneider Cup Race on the Solent (TIME, Sept. 16). Even after the Royal Air Force astounded the world by winning the race at 328 m. p. h. and later smashing all speed records by flying 357.7 m. p. h. on a three-kilometer closed course at Calshot, little was known of the Rolls-Royce engine used.

In the U. S., those interested presumed its power to be somewhere near that of Packard Co.'s mightiest, a 24-cylinder X-type engine, producing 1,250 h. p....

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