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).
Table showing the results of various radiator and louvre configurations tested at different speeds.
| Identifier | ExFiles\Box 15\1\ Scan398 | |
| Date | 14th October 1930 guessed | |
| TYPE OF RADIATOR 30 M.P.H. Full Throttle. ST Top Water & Ats. | Mean Water & Ats. 45 M.P.H. Full Throttle. ST Top Water & Ats. | Mean Water & Ats. 60 M.P.H. All Closed. ST Top Water & Ats. | Mean Water & Ats. All Out. All Closed. ST Top Water & Ats. | Mean Water & Ats. 6 mm. Sq. Tube Vertical Louvres. 69.75 | 64. | 66. | 60.5 6/7 1/2 mm. Vertical Louvres. 78. | 72.5 | 73. | 68. 6/7 1/2 mm. Horizontal Louvres. | | 78.5 | 73.5 Vertical Louvres 6/7 1/2 mm. Dented. 74.0 | 68.0 | 69. | 63.5 | 59. | 55. | 67.75 | 62.75 Vertical Louvres 6/7 1/2 mm. Standard. 77. | 71. | 70.75 | 65.75 | 63. | 59. | 74. | 69. RESULTS OF BROOKLANDS TESTS WEEK FROM 13th. TO 18th. OCTOBER. Left margin references: X.76226.00 X.76225.00 x7250 | ||