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 idling cooling tests carried out on a 37 EX car at Brooklands.
| Identifier | ExFiles\Box 94\3\ scan0223 | |
| Date | 24th June 1937 guessed | |
| RESULTS OF IDLING COOLING TESTS CARRIED OUT ON 37 EX CAR AT BROOKLANDS. (SHEET 1) CONDITIONS OF TEST AIR TEMP DURING TESTS °C TIME TO REACH 100°C MINS. TIME TO REACH 105°C i.e. LOSE WATER MINS CRITICAL AIR TEMP. °C REMARKS STD MATRIX - B.S.C & FAN 19 17 21 9.5 STD MATRIX - B.S.O & FAN 18 24 33 11.5 STD MATRIX - B.S.O & FAN - FANRING FITTED 20 26 37 13.5 STD MATRIX - LOUVRED BONNET & FAN 17 * * 18.0 STD MATRIX B.S.C 5 BLADE FAN .9/1 RATIO 18.0 34 55 12.5 STD MATRIX B.S.D 5 BLADE FAN .9/1 RATIO 19.5 48 * 19.5 STD MATRIX LOUVRED BONNET 5 BLADE FAN .9/1 RATIO 18.0 * * 24.0 STD MATRIX B.S.C. 5 BLADE FAN 1.1/1 RATIO 22.0 * * 25.0 FAN NOISY - WHINE AUDIBLE IN TOP GEAR STD MATRIX B.S.O 5 BLADE FAN 1.1/1 RATIO 22.0 * * 30.0 DITTO. STD MATRIX LOUVRED BONNET 5 BLADE FAN 1.1/1 RATIO 22.0 * * 32.0 DITTO. STD MATRIX B.S.O 5 BLADE FAN 1.2/1 RATIO 15.0 * * 33.0 FAN VERY NOISY - AUDIBLE IN TOP GEAR STD MATRIX B.S.O 5 BLADE FAN 1/1 RATIO 21.0 * * 27.0 FAN NOT AUDIBLE IN TOP - SLIGHT NOISE IN GEARS LIGHTENED MATRIX B.S.O. 5 BLADE FAN 1/1 RATIO 22.0 * * 26.5 MATRIX WITH AIR SLOTS 5 BLADE FAN 1/1 RATIO B.S.O 19.0 * * 31.5 AIR ESCAPES FROM UNDER BONNET THROUGH AIR SLOTS FORWARD HARRISON MATRIX B.S.O 5 BLADE FAN 1/1 RATIO 24.5 * * 27.0 GALLAY MATRIX B.S.O 5 BLADE FAN 1/1 RATIO 26.0 30 * 22.5 NOTE (A) CRITICAL AIR TEMP IS MINIMUM ATMOSPHERIC TEMP NECESSARY FOR WATER TO REACH 100°C IF IDLED LONG ENOUGH. (B) ATMOSPHERIC TEMP. WHEN WATER LOSS OCCURS IS 5°C HIGHER THAN CRITICAL AIR TEMP. (OWING TO STEAM VALVE) (C) B.S.C & B.S.O DENOTE BONNET SHUTTERS CLOSED & OPEN RESPECTIVELY (D) * - INDICATES THAT TEMP NEVER REACHES FIGURE AT HEAD OF COLUMN OWING ATMOS. TEMP DURING TESTS. | ||