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).
Log of temperature and performance data taken during a vehicle test run, noting conditions like inclines and crosswinds.
| Identifier | ExFiles\Box 75\4\ scan0071 | |
| Date | 2nd May 1912 guessed | |
| ATMOSPHERIC TEMP °C | MILES PEP HOUR | WATER TEMP. | FLOORBOARD TEMP. ON Top. | FLOORBOARD UNDERNEATH. | CONDITIONS 15° | 20 | 78° | 19° | 41° | Light running. 15° | 25 | 84° | 18 1/2° | 34° | uphill slightly. 15° | 25 | 80° | 22° | 40 1/2° | " " 15° | 25 | 78° | 20° | 41° | " " 12° | 15 | 80° | 23° | 46° | Cross wind gave shake Ro{C. C. Rose - Export Manager} 10° | 40 | 78° | 20° | 45° | " " 13° | 60 | 80° | 22° | 45° | " " 13° | 45 | 78° | 21° | 45° | " " 12° | 50 | 80° | 22° | 45° | " " 12° | 40 | 78° | 21° | 42° | } Bottom of C+F x wind 12° | 40 | 78° | 22° | 42° | } Top of C+F.{Mr Friese} Buxton [strikethrough] 12° | — | 62° | 22° | 40° | } Bottom of C+F wind behind 14° [30° written above] | 25-30 [on foot pedal written below] | 85° | 22° | 45° | } Half way up. Macclesfield 14° | 28 | 88° | 21° | 46° | } Top of C+F.{Mr Friese} 14° | 40 | 90° | 22° | 46° | 1 mile on the top. 14° | — | 76° | 20° | 41° | Buxton Brakes on full throttle [throttle is underlined] 14° | 25 | 88° | 20° | 44° | Top at C+F.{Mr Friese} 13° | 25 | 80° | 19° | 40° | Light running x wind 14° | 25 | 80° | 20° | 42° | " " 14° | 40 | 83° | 20° | 24° | " " 1649 before going to France, taken by Holgate. [Text written vertically on the right edge]: X8179 | ||