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).
Mileage test log for Dunlop straight-sided tyres, recording daily routes, speeds, and road conditions.
| Identifier | ExFiles\Box 45\1\ Scan179 | |
| Date | 11th January 1921 | |
| TESTS CARRIED OUT ON DUNLOP STRAIGHT-SIDED-TYRES Pressures - 75 lbs. rear. 60 lbs. front. Date. | Tyres fitted. | Position on car. | Total mileage. F.{Mr Friese} R.{Sir Henry Royce} | Daily miles. | Route taken. | Remarks. 11.1.21 | FD.{Frank Dodd - Bodies}D.5256 FD.{Frank Dodd - Bodies}D.5257 FD.{Frank Dodd - Bodies}D.5206 FD.{Frank Dodd - Bodies}D.5234 | N front O front N rear O rear 12.1.21 | FD.{Frank Dodd - Bodies}D.5256 FD.{Frank Dodd - Bodies}D.5257 FD.{Frank Dodd - Bodies}D.5206 FD.{Frank Dodd - Bodies}D.5234 | N front O front N rear O rear | 716 716 | 99 | Local. | Average speed 25 M.P.H. Roads fairly good. (Between columns: 1098, 1098) 13.1.21 | FD.{Frank Dodd - Bodies}D.5256 FD.{Frank Dodd - Bodies}D.5257 FD.{Frank Dodd - Bodies}D.5206 FD.{Frank Dodd - Bodies}D.5234 | N front O front N rear O rear | 773 773 | 57 | " | Average speed 18 M.P.H. (Between columns: 1155, 1155) 14.1.21 | FD.{Frank Dodd - Bodies}D.5256 FD.{Frank Dodd - Bodies}D.5257 FD.{Frank Dodd - Bodies}D.5206 FD.{Frank Dodd - Bodies}D.5234 | N front O front N rear O rear | 881 881 | 108 | " | Average speed 20 M.P.H. Roads moderate. (Between columns: 1263, 1263) 15.1.21 16.1.21 | FD.{Frank Dodd - Bodies}D.5256 FD.{Frank Dodd - Bodies}D.5257 FD.{Frank Dodd - Bodies}D.5206 FD.{Frank Dodd - Bodies}D.5234 | N front O front N rear O rear | 1002 1002 | 121 | Derbyshire. | Average speed 20 M.P.H. Roads good. (Between columns: 1384, 1384) 17.1.21 | FD.{Frank Dodd - Bodies}D.5256 FD.{Frank Dodd - Bodies}D.5257 FD.{Frank Dodd - Bodies}D.5206 FD.{Frank Dodd - Bodies}D.5234 | N front O front N rear O rear | 1061 1061 | 59 | Local | Test runs - Give and take roads. (Between columns: 1443, 1443) Contd. (Printed on right edge: 1000-11-20 M H & S Ltd M) | ||