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).
Performance and temperature data from a test run at Brooklands.
| Identifier | ExFiles\Box 29\3\ Scan003 | |
| Date | 8th May 1909 | |
| R.R. 148 (20 H) (H.{Arthur M. Hanbury - Head Complaints} 360. 16.9.09) E.P. 4941. -2- X1010 8/5/09 Atmospheric temp: 68° F.{Mr Friese} Heat of water in Radiator after run to Brooklands 154°F Temp: of water in Radiator of 4 laps at high speed 162°F Fastest times - 1/2 mile 3rd gear 28 secs 1/2 mile 4th gear 27 secs 3rd gear 2 laps 5 min 42 secs 4th gear 1 lap 2 min 53 secs JR{Mr James Royce} R | ||