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 cooling tests carried out on chassis 1 B IV at Brooklands.
| Identifier | ExFiles\Box 131\5\ scan0004 | |
| Date | 3rd November 1937 guessed | |
| RESULTS OF COOLING TESTS CARRIED OUT ON 1 B IV AT BROOKLANDS. TABLE DATA: HEADERS: CONDITIONS, SIZE OF BYPASS, TOP WATER TEMP °C, BOTTOM WATER TEMP °C, AIR TEMP °C, WATER PRESS IN THERMOSTAT CASING LBS D", MAX. WATER PRESS WHEN COLD WITH THERMOSTAT WORKING LBS. D", CRITICAL AIR TEMP (UNCORRECTED), CRITICAL AIR TEMP (CORRECTED) ROW 1: Condition: MAX. SPEED FULL THROTTLE (30 M.P.H.) Size of Bypass: 7/16" DIA. Top Water Temp °C: 70 Bottom Water Temp °C: 57 Air Temp °C: 15 Water Press in Thermostat Casing: 4.0 LBS D" Max. Water Press When Cold: 20 LBS. D" Critical Air Temp (Uncorrected): 45 Critical Air Temp (Corrected): 47.3 ROW 2: Condition: THERMOSTAT VALVE FULL OPEN FOR CRITICAL AIR TESTS Size of Bypass: 1/2" DIA. Top Water Temp °C: 73 Bottom Water Temp °C: 59 Air Temp °C: 15 Water Press in Thermostat Casing: 3.5 LBS D" Max. Water Press When Cold: 25 LBS. D" Critical Air Temp (Uncorrected): 42 Critical Air Temp (Corrected): 40.6 ROW 3: Condition: THERMOSTAT VALVE FULL OPEN FOR CRITICAL AIR TESTS Size of Bypass: 5/8" DIA. Top Water Temp °C: 75 Bottom Water Temp °C: 59 Air Temp °C: 15 Water Press in Thermostat Casing: 3.0 LBS D" Max. Water Press When Cold: 33 LBS. D" Critical Air Temp (Uncorrected): 40 Critical Air Temp (Corrected): 38.5 ROW 4: Condition: 30 M.P.H. FULL THROTTLE Size of Bypass: 7/16" DIA. Top Water Temp °C: 73 Bottom Water Temp °C: 60 Air Temp °C: 13.5 Water Press in Thermostat Casing: 2.0 LBS D" Max. Water Press When Cold: — Critical Air Temp (Uncorrected): 40.5 Critical Air Temp (Corrected): 39.2 ROW 5: Condition: THERMOSTAT VALVE FULL OPEN FOR CRITICAL AIR TESTS Size of Bypass: 1/2" DIA. Top Water Temp °C: 73 Bottom Water Temp °C: 58.5 Air Temp °C: 12.5 Water Press in Thermostat Casing: 2.0 LBS D" Max. Water Press When Cold: — Critical Air Temp (Uncorrected): 39.5 Critical Air Temp (Corrected): 38.0 ROW 6: Condition: THERMOSTAT VALVE FULL OPEN FOR CRITICAL AIR TESTS Size of Bypass: 5/8" DIA. Top Water Temp °C: 73.5 Bottom Water Temp °C: 57.5 Air Temp °C: 12.0 Water Press in Thermostat Casing: 2.0 LBS D" Max. Water Press When Cold: — Critical Air Temp (Uncorrected): 38.5 Critical Air Temp (Corrected): 37.0 | ||