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).
Comparison table of radiator/cooler specifications for different configurations.
| Identifier | ExFiles\Box 27a\3\ Scan127 | |
| Date | 29th August 1930 guessed | |
| E 1072. Gallay 7 x 100 m/m 10 x 120 m/m 10 x 120 m/m with hex end Frontal area per 100 h.p. sq. ft. 2.44 3.03 3.18 3.18 Wt. empty per 100 h.p. 34.2 41.4 39.0 38.0 Wt. full per 100 h.p. 57.0 66.4 69.0 68.0 Resistance per 100 h.p. 15.8 17.8 13.0 9.7 m W plus R empty per 100 h.p. 21.9 25.4 20.2 16.7 m W plus R full per 100 h.p. 26.1 30.1 26.0 22.2 Equivalent wt. empty 119.0 137.0 109.0 90.0 | ||