Test report comparing temperature readings inside a car under various insulation and modification conditions.
| Identifier | ExFiles\Box 53\4\ Scan113 | |
| Date | 11th December 1923 | |
| 11.12.23. CONDITION OF CAR. | CONDITION OF CAR. | Atmos-pheric temp. | Temp. of air at rear of Radiator. (A) | Temp.of air at pedal slots. (B) | Temp. of air under scuttle. (C) | Dash-board temp. (D) | | :--- | :--- | :--- | :--- | :--- | :--- | | STANDARD+ | 6.4°C | 49°C | 50.5°C | 30.3°C | 34.3°C | | (1) Pedal slots and cut-out pedal filled in. | 10.6°C | 53.5°C | 50.3°C | 28.4°C | 38°C | | (2) As above, altered undershield and fly-wheel guard. | 11.6°C | 55°C | 50.7°C | 23.8°C | 36.2°C | | (3) As above, with ped-als 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 | | (4) As above, cork on the floor. | 11°C | 54°C | 40.5°C | 20.5°C | ---- | | (5) As above, cork against dashboard. | 10.6°C | 53.5°C | 40°C | 19.5°C | ---- | RISE IN TEMPERATURE FROM ATMOSPHERIC. Conditions as above. | Conditions as above. | (A) | (B) | (C) | (D) | | :--- | :--- | :--- | :--- | :--- | | Standard. | 42.6°C | 44.1°C | 23.9°C | 27.9°C | | (1) | 42.9°C | 39.7°C | 17.8°C | 27.4°C | | (2) | 43.4°C | 39.1°C | 12°C | 24.6°C | | (3) | 43.4°C | 28.4°C | 2.5°C | 24.5°C | | (4) | 43°C | 29.5°C | 9.5°C | ---- | | (5) | 42.9°C | 29.4°C | 8.9°C | ---- | Percentage improvement effect from standard. | | (B) | (C) | (D) | | :--- | :--- | :--- | :--- | | (1) | 10% | 25.5% | 1.8% | | (2) | 11 1/4% | 50% | 12% | | (3) | 35.5% | 60% | 12 1/4% | | (4) | 33.1% | 60% | --- | | (5) | 30% | 62 1/4% | --- | | ||
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).