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).
Summary table of radiator test results conducted at Brooklands.
| Identifier | ExFiles\Box 145\1\ scan0170 | |
| Date | 28th July 1936 guessed | |
| RESULTS OF RADIATOR TESTS AT BROOKLANDS. Object of Test Mark V & Mark VI matrix comparison. Plain & Louvred bonnet comparisons. With (1) - Speed comparisons. Fan Comparisons. Conditions of Test (1) Mark VI Matrix standard fan, flip-flap bonnet - flaps open. 40 M.P.H. Full throttle. (2) Mark V Matrix, standard fan, flip-flap bonnet, flip-flaps open. 40 M.P.H. full throttle. (3) standard Mark V matrix, standard fan, Louvred bonnet - 40 M.P.H. full throttle. (4) Mark VI Matrix, standard fan, "flip-flap" bonnet - flaps open. 30 M.P.H. full throttle. (5) Mark VI Matrix standard fan. As (4) but 50 M.P.H. full throttle. (6) As (1) but no fan. (7) As (1). (8) As (1) but .012" blade flexible fan. (9) As (1) but .014" blade flexible fan. Critical Air Temp. 26.5ºC. 20.0ºC. 23.0ºC. 27.0ºC. 25.0ºC. 20.0ºC. 26.5ºC. 24.5ºC. 24.0ºC. Temp of air leaving radiator core. (Average air. temp. for day - 21ºC). 61.0ºC. 58.5ºC. 51.0ºC. 63.0ºC. 58.0ºC. 66.0ºC. 61.0ºC. 61.0ºC. 62.0ºC. | ||