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 155\1\ scan0300 | |
| Date | 24th August 1937 guessed | |
| ( SHEET 1. ) RESULTS OF IDLING COOLING TESTS CARRIED OUT ON 37 EX CAR AT BROOKLANDS CONDITIONS OF TEST - STD MATRIX - B.S.C & FAN - STD MATRIX - B.S.O & FAN - STD MATRIX - B.S.O & FAN - FANRING FITTED - STD MATRIX - LOUVRED BONNET & FAN - STD MATRIX B.S.C 5 BLADE FAN .9/1 RATIO - STD MATRIX B.S.D 5 BLADE FAN .9/1 RATIO - STD MATRIX LOUVRED BONNET 5 BLADE FAN .9/1 RATIO - STD MATRIX B.S.C 5 BLADE FAN 1.1/1 RATIO - STD MATRIX B.S.O 5 BLADE FAN 1.1/1 RATIO - STD MATRIX LOUVRED BONNET 5 BLADE FAN 1.1/1 RATIO - STD MATRIX B.S.O 5 BLADE FAN 1.2/1 RATIO - STD MATRIX B.S.O 5 BLADE FAN 1/1 RATIO - LIGHTENED MATRIX B.S.O 5 BLADE FAN 1/1 RATIO - MATRIX WITH AIR SLOTS 5 BLADE FAN 1/1 RATIO B.S.O - HARRISON MATRIX B.S.O 5 BLADE FAN 1/1 RATIO - GALLAY MATRIX B.S.O 5 BLADE FAN 1/1 RATIO AIR TEMP DURING TESTS °C 19 18 20 17 18.0 19.5 18.0 22.0 22.0 22.0 15.0 21.0 22.0 19.0 24.5 26.0 TIME TO REACH 100°C MINS. 17 24 26 * 34 48 * * * * * * * * * 30 TIME TO REACH 105°C ie LOSE WATER MINS 21 33 37 * 55 * * * * * * * * * * * CRITICAL AIR TEMP. °C 9.5 11.5 13.5 18.0 12.5 19.5 24.0 25.0 30.0 32.0 33.0 27.0 26.5 31.5 27.0 22.5 REMARKS. FAN NOISY - WHINE AUDIBLE IN TOP GEAR DITTO. DITTO. FAN VERY NOISY - AUDIBLE IN TOP GEAR FAN NOT AUDIBLE IN TOP - SLIGHT NOISE IN GEARS AIR ESCAPES FROM UNDER BONNET THROUGH AIR SLOTS FORWARD 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. | ||