That the tyres of Sir Malcolm Campbell’s Blue Bird increased in diameter to the extent of an inch at 270 miles an hour was one of the many interesting points made by Mr. H. L >. Ken ward, sales director of the Bunlop Rubber Company, in an address to an English Rotary Club. The growth is caused by centrifugal force, and Mr. Kenward said that the speed of the tyres reached 2500 revolutions a minute in the record runs.
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Hawera Star, Volume LIII, 30 September 1933, Page 12
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78Untitled Hawera Star, Volume LIII, 30 September 1933, Page 12
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