Results of cooling tests conducted at Brooklands on the 37 EX car, comparing different radiator matrix and fan configurations.
| Identifier | ExFiles\Box 94\3\ scan0225 | |
| Date | 24th June 1937 guessed | |
| (SHEET 3) RESULTS OF COOLING TESTS CARRIED OUT AT BROOKLANDS ( 40 MPH FULL THROTTLE ) ON 37 EX CAR CONDITIONS OF TEST AIR TEMP DURING TESTS °C CRITICAL AIR TEMP °C STD. MATRIX B.S.O 16.5 35.0 STD. FAN STD. MATRIX B.S.O 24.0 38.0 5 BLADE FAN 1.0/1 RATIO STD. MATRIX B.S.O 24.0 41.5 5 BLADE FAN 1.1/1 RATIO STD. MATRIX B.S.O 18.0 42.0 5 BLADE FAN 1.2/1 RATIO LIGHTENED MATRIX B.S.O 21.0 27.0 STD. FAN LIGHTENED MATRIX B.S.O 21.0 30.0 5 BLADE FAN 1/1 RATIO HARRISON MATRIX B.S.O 24.0 38.5 5 BLADE FAN 1/1 RATIO GALLAY MATRIX ( 60 M.M. ) B.S.O 25.5 25.5 5 BLADE FAN 1/1 RATIO MATRIX WITH AIR SLOTS B.S.O 22.0 28.5 5 BLADE FAN 1/1 RATIO NOTE (A) B.S.O DENOTES BONNET SHUTTERS OPEN (B) CRITICAL AIR TEMP IS MINIMUM ATMOSPHERIC TEMP NECESSARY FOR WATER TO REACH 100°c IF DRIVEN AT 40 MPH FULL THROTTLE LONG ENOUGH. (C) MINIMUM ATMOSPHERIC TEMP FOR WATER LOSS TO OCCUR IS 5°c ABOVE CRITICAL AIR TEMP (OWING TO STEAM VALVE) | ||
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).