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).
Shock damper temperature tests conducted on a 20-EX car, with and without a heat shield.
| Identifier | ExFiles\Box 151\2\ scan0111 | |
| Date | 8th November 1933 | |
| X4698 8.11.33. X7520 FILES: ----- 20-EX. SHOCK DAMPER TEMPERATURE TESTS. A series of tests were carried out on the above car: (1) Running the car in a perfectly standard condition, (2) By placing a shield over the N.S.R. shock damper - the idea being to shield the damper from the hot exhaust pipe, and at the same time to produce an air current over the damper. The shield however only produced a fall in oil temperature of approximately 8°C; this was due to the air being thoroughly warmed before it entered the scoop in the shield. Test 1. N.S. - Exhaust. Off-side. Average. Maximum. Average. Maximum Oil Temperature. 53°C. 60°C. 31°C. 32°C. Air Temp. close to gland. 38°C. 40°C. 23°C. 23°C. Test 2 (with shield). Oil Temperature. 45°C. 47°C. - - Air Temp. close to gland. 35°C. 35°C. - - Melting Temp. of Gland Wax: 40°C. The oil temperature in the front dampers was also checked, and this was found to maintain a steady 17°C. The air temperature being 10°C. Hs {Lord Ernest Hives - Chair} /Les. | ||