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).
Results of cooling tests carried out at Brooklands at maximum speeds on a 37 Ex. Car, Sheet 4.
| Identifier | ExFiles\Box 94\3\ scan0226 | |
| Date | 24th June 1937 guessed | |
| RESULTS OF COOLING TESTS CARRIED OUT AT BROOKLANDS (MAX SPEEDS) ON 37 Ex. CAR. (SHEET 4) CONDITIONS OF TESTS | | AIR TEMP. DURING TESTS °C | CRITICAL AIR TEMP. °C | LAP SPEED. STD. MATRIX. STD. FAN. | B.S.C. | 18.0 | 35.5 | 84.0 STD. MATRIX. STD. FAN. | B.S.O. | 18.0 | 39.5 | 85.5 STD. MATRIX. STD. FAN - FAN RING FITTED. | B.S.O. | 18.0 | 39.5 | 85.0 STD. MATRIX. 5 BLADE FAN .9/1 RATIO | B.S.O. | 18.0 | 39.5 | 84.6 STD. MATRIX. 5 BLADE FAN .9/1 RATIO | LOUVERED BONNET. | 18.0 | 39.0 | 84.4 STD. MATRIX. 5 BLADE FAN. 1.0/1 RATIO | B.S.O. | 21.5 | 41.5 | — STD. MATRIX. 5 BLADE FAN. 1.1/1 RATIO | LOUVERED BONNET. | 22.0 | 42.5 | — STD. MATRIX. 5 BLADE FAN. 1.2/1 RATIO | B.S.O. | 22.0 | 44.0 | 84.6 STD. MATRIX. No FAN | B.S.O. | 18.0 | 34.0 | 86.0 LIGHTENED MATRIX. STD. FAN .9/1 RATIO | B.S.O. | 22.0 | 27.0 | 85.5 LIGHTENED MATRIX. 5 BLADE FAN 1.0/1 RATIO | B.S.O. | 21.0 | 29.0 | 84.3 HARRISON MATRIX. 5 BLADE FAN 1.0/1 RATIO | B.S.O. | 23.5 | 40.0 | 83.8 GALLAY MATRIX. (60 MM) 5 BLADE FAN 1.0/1 RATIO. | B.S.O. | 23.5 | 26.5 | 84.0 MATRIX. WITH AIR SLOTS. 5 BLADE FAN 1.0/1 RATIO. | B.S.O. | 21.0 | 28.5 | 83.4 NOTE :- (A) CRITICAL AIR TEMP IS MIN ATMOS TEMP. NECESSARY FOR WATER TO REACH 100°C IF DRIVEN AT MAX SPEED LONG ENOUGH. (B) MIN ATMOS TEMP FOR WATER LOSS IS 5° ABOVE CRITICAL AIR TEMP. (C) B.S.C - BONNET SHUTTERS CLOSED - B.S.O - BONNET SHUTTERS OPEN. | ||