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).
From a heat test on Ashbourne Hill, recording footboard and water temperatures.
| Identifier | ExFiles\Box 75\4\ scan0174 | |
| Date | 24th August 1908 | |
| Heat test. Ashbourne Hill. Aug 24/08 3500 [crossed out text] most. drottam. Windows closed. Car standing still at the bottom of the hill? Footboard 62.5 Water 77.0 still running - at top of hill 74. 88. Windows open Bottom Top Footboard 58 60 Water 79 88 X819 No diaphragm Surrounding temperature 17. Bottom Top Footboard 58 50 Windows closed Water 81 90. Footboard 65 44 Windows open Water 80 88. 9% reduction LP.{Mr Lappin} run engine late ignition to last of water. | ||