Graph showing the effect of speed on the effective radius of two different sizes of Dunlop Fort Silent tyres.
| Identifier | ExFiles\Box 45\2\ Scan299 | |
| Date | 12th September 1930 | |
| EFFECT OF SPEED ON THE EFFECTIVE RADIUS OF A 7.00-20 DUNLOP FORT SILENT TYRE AND A 6.00-19 DUNLOP FORT SILENT TYRE INFLATED TO 35 LBS. SQ. INCH. INCREASE IN RADIUS. M.M'S SPEED. MILES PER HOUR. 7.00-20. 6.00-19. | ||
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).