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).
Sketch and data for a worn tyre contact patch analysis.
| Identifier | ExFiles\Box 157\2\ scan0284 | |
| Date | 1st July 1938 | |
| 6.50 - 17 Fort, 'F.4.T.C.' Worn. July 1938. Cover No. 99234.H.I. Load 15 cwts. I.P. 40 lbs/sq.in. Rim. 4.00" Ellipse Area 36.2 sq.in. Contact Area 31.2 sq.in. Contact Length 204 mm. Contact Width 125 mm. | ||