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).
Test report on Dunlop straight-sided tyres for the week ending 8th August 1920.
| Identifier | ExFiles\Box 45\1\ Scan071 | |
| Date | 8th August 1920 | |
| Tests on Dunlop straight-sided tyres for week ending 8th. August. 1920. Date. | Tyres fitted. | Position on Car. | Total miles run. F.{Mr Friese} R.{Sir Henry Royce} | Daily miles. | Route taken. | Remarks. --- | --- | --- | --- | --- | --- | --- 3.8.20 | FD.{Frank Dodd - Bodies}1648 FD.{Frank Dodd - Bodies}1908 FD.{Frank Dodd - Bodies}3168 FD.{Frank Dodd - Bodies}1999 | N front O front O rear N rear | 3711 3711 3017 243 | 82 | Derbyshire. | Bad roads - average speed 30 M.P.H. 4.8.20 | FD.{Frank Dodd - Bodies}1648 FD.{Frank Dodd - Bodies}1908 FD.{Frank Dodd - Bodies}3168 FD.{Frank Dodd - Bodies}1999 | N front O front O rear N rear | 3793 3793 3058 325 | 82 41 82 | Derby to Birmingham and back. | FD.{Frank Dodd - Bodies}3168 tyre changed at Dunlops. FD.{Frank Dodd - Bodies}2012 burst tyre taken to Dunlops. FD.{Frank Dodd - Bodies}2159 fitted at Dunlops. | FD.{Frank Dodd - Bodies}2159 | O rear | 41 | 41 | | Fitted at Dunlops. 5.8.20 | FD.{Frank Dodd - Bodies}1648 FD.{Frank Dodd - Bodies}1908 FD.{Frank Dodd - Bodies}2159 FD.{Frank Dodd - Bodies}2460 | N front O front O rear N rear | 3857 3857 105 64 | 64 | Local runs. | REAR TYRE PRESSURE REDUCED TO 70 LBS. FD.{Frank Dodd - Bodies}2460 fitted at Derby. 6.8.20 | FD.{Frank Dodd - Bodies}1648 FD.{Frank Dodd - Bodies}1908 FD.{Frank Dodd - Bodies}2159 FD.{Frank Dodd - Bodies}2460 | N front O front O rear N rear | 3891 3891 139 98 | 34 | Local runs. | 7.8.20 8.8.20 | FD.{Frank Dodd - Bodies}1648 FD.{Frank Dodd - Bodies}1908 FD.{Frank Dodd - Bodies}2159 FD.{Frank Dodd - Bodies}2460 | N front O front O rear N rear | 3952 3952 200 159 | 61 | Derbyshire. | Roads moderate. Average speed 20 M.P.H. Faint text on right margin: R.R. LTD DPT DEPT 1500 10-19 | ||