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 detailing temperature readings in different parts of a car under various modifications to reduce heat ingress.
| Identifier | ExFiles\Box 136\5\ scan0024 | |
| Date | 11th December 1923 | |
| 11.12.23. TABLE 1 COLUMN HEADERS: CONDITION OF CAR., Atmospheric temp., Temp. of air at rear of Radiator. (A), Temp. of air at pedal slots. (B), Temp. of air under scuttle. (C), Dashboard temp. (D) ROW 1: STANDARD+, 6.4°C, 49°C, 50.5°C, 30.3°C, 34.3°C ROW 2: (1) Pedal slots and cut-out pedal filled in., 10.6°C, 53.5°C, 50.3°C, 28.4°C, 38°C ROW 3: (2) As above, altered undershield and fly-wheel guard., 11.6°C, 55°C, 50.7°C, 23.8°C, 36.2°C ROW 4: (3) As above, with pedals cowled in so as to make it impossible for hot air to get in., 11.6°C, 55°C, 40°C, 21.1°C, 36.1°C ROW 5: (4) As above, cork on the floor., 11°C, 54°C, 40.5°C, 20.5°C, ---- ROW 6: (5) As above, cork against dashboard., 10.6°C, 53.5°C, 40°C, 19.5°C, ---- TABLE 2 TITLE: Conditions as above. RISE IN TEMPERATURE FROM ATMOSPHERIC. COLUMN HEADERS: (A), (B), (C), (D) ROW 1: Standard., 42.6°C, 44.1°C, 23.9°C, 27.9°C ROW 2: (1), 42.9°C, 39.7°C, 17.8°C, 27.4°C ROW 3: (2), 43.4°C, 39.1°C, 12°C, 24.6°C ROW 4: (3), 43.4°C, 28.4°C, 2.5°C, 24.5°C ROW 5: (4), 43°C, 29.5°C, 9.5°C, ---- ROW 6: (5), 42.9°C, 29.4°C, 8.9°C, ---- TABLE 3 TITLE: Percentage improvement effect from standard. COLUMN HEADERS: (B), (C), (D) ROW 1: 10%, 25.5%, 1.8% ROW 2: 11.4%, 50%, 12% ROW 3: 35.5%, 60%, 12.4% ROW 4: 33.1%, 60%, ---- ROW 5: 30%, 52.4%, ---- | ||