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).
Radiator tests for Chassis No. 22 G V, recording water temperatures and shutter positions under various conditions.
| Identifier | ExFiles\Box 101\1\ scan0218 | |
| Date | 31th August 1936 | |
| CHASSIS NO. 22 G V.{VIENNA} 31.8.36. Radiator Tests Continued. 4. Spring was fitted in thermostat, and test continued with empty header tank at max. speed. Air 16°c. WATER IN ENGINE WATER IN RADIATOR DIFFERENCE SHUTTER POSITION. 71°c. 65°c. 6°c. Closed. 75 70 5 " 82 80 2 " 88 85 3 " Shutters begin to open 95 87 8 Half open 91 85 6 " " 88 80 8 " " 88 80 8 " " FLUCTUATING 92/90/93 84 8 " " 89 81 8 " " Average 86°c. 79.7°c. 6.3°c. 5. Last test was repeated with header tank nearly full. WATER IN ENGINE WATER IN RADIATOR DIFFERENCE SHUTTER POSITION. 83°c 75°c 8°c. Closed. 85 80 5 " 89 85 4 " Shutters begin to open 93 87 6 Half open. 94 86 8 3/4 open. Fluctuating. 90/93/92 86 ? 7 " 85 78 7 " 85 76 9 Half open. 86 80 6 " " Fluctuating. 90/93/92 84 8 " " 90 84 6 " " 93 85 8 " " 90 84 6 " " Average 89°c. 82°c. 7°c. 6. General conditions on road at about 30 m.p.h. Spring fitted. Air 18°c. WATER IN ENGINE WATER IN RADIATOR. 82°c. 74°c. 80 73 80 73 Average 80.6°c. 73.3°c. Engine thermometer in standard position at rear of block. Radiator thermometer as close as was possible to thermostat. The fluctuating reading - 92/90/93 of engine thermometer occurred at the same place on the home banking on every lap in the tests in which it is indicated. There was no immediate explanation. | ||