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).
Radiator tests comparing a standard radiator to a 'Sofr' radiator, with temperature readings recorded at various intervals.
| Identifier | ExFiles\Box 38\2\ Scan170 | |
| Date | 7th February 1922 | |
| WM 26/10M PKD'S (SH 686 9-11-20) MP 231103 X3456 ROLLS-ROYCE LTD. INSTRUCTIONS. To Mr Hives 7/2/ 1922 Order No. Customer's No. Radiator Tests on 49 G1B Standard radiator & Sofr radiator with projections inside tubes Tests taken on London Rd car with standard. Standard Radiator Temperatures dc | Water temp at start | m.p.h | 1/2 mile | 1 | 1 1/2 | 2 | 2 1/2 | 3 4°C | 60°C | 30 | 61 | 61.5 | 61.5 | 61.5 | 61.5 | 61.5 " | " | " | 61 | 62 | 62.5 | 62.5 | 63.5 | 64 " | " | " | 61 | 61.5 | 61 | 61.5 | 61.5 | 61.5 4.5°C | " | " | 61 | 61.5 | 62 | 62.5 | 63 | 63.5 " | " | " | 60.5 | 61 | 61 | 61 | 61 | 61 " | " | " | 61 | 62 | 62.5 | 63 | 63.5 | 64 Sofr Radiator Temperatures 5.5°C | 60°C | 30 | 60.5 | 60.5 | 60 | 60 | 59.5 | 59 " | " | " | 61 | 61.5 | 61.5 | 62 | 62 | 62 " | " | " | 59.5 | 59 | 58.5 | 58.5 | 58.5 | 58 6°C | " | " | 61 | 61.5 | 62 | 62 | 62 | 62 " | " | " | 59.5 | 59 | 58.5 | 58 | 58 | 58 " | " | " | 60.5 | 61 | 61 | 61 | 61.5 | 61.5 Signed [Illegible Signature] This Sheet must be filed on completion of the work | ||