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 temperature test results for Chassis No. 22-C-V at Brooklands.
| Identifier | ExFiles\Box 155\1\ scan0199 | |
| Date | 31th March 1936 | |
| X1320 Chassis No. 22-C-V.{VIENNA} 31.3.36. Radiator Tests at Brooklands. (1) Header tank half full. Max speed, full throttle. Air temperature 14°C. Head wind on Railway Straight. Following wind past Vickers Shed. Water Temp. in Engine. Water Temp. in Rad. Difference. 81°C. 75°C. 6°C. 87 80 7 88 80 8 82 75 7 85 78 7 85 Average 84.6°C. 78°C. Mean diff. 6.6°C. (2) Header tank empty. (Matrix just covered) Conditions as above. Mirror fitted to observe shutters. Water Temp. in Engine. Water in Rad. Difference. Shutter Position. 76°C. 72°C. 4°C. Half open. 90°C 80 10 Open. 83 75 8 Half open. 79 71 8 Half open. 83 75 8 Open. 85 80 5 Half open. 89 81 8 Open. 83 75 8 Half open. 80 72 8 3/4 open. 81 72 9 Half open. 80 77 5 Half open. (Slowed down) 82 75 8 Open. Average 83°C. 75.4°C. 7.6°C. (3) Same conditions as (2), but at reduced speed. Water in Engine. Water in Rad. Difference. Shutter Position. 75°C. 65°C. 10°C. Half open. 79 70 9 Half open. 77 69 8 Half open. (Speed increased) 86 80 6 Half open. 80 71 9 Half open. Average 79.4°C 71.0°C 8.4°C | ||