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).
Temperature and speed test of a unit, noting performance up to 2440 r.p.m., oil used, and leakage.
| Identifier | ExFiles\Box 127\3\ scan0038 | |
| Date | 25th April 1935 | |
| -2- Hs{Lord Ernest Hives - Chair}/WB.{Mr Brazier/Mr Bell}3/KW. 25.4.35. The unit was again assembled, and, commencing at 1500 r.p.m., was run until the temperature ceased to increase, the speed being then increased to 1750 r.p.m. This process was repeated up to 2440 r.p.m. - the maximum motor speed - in 250 r.p.m. stages. The attached graph illustrates the increase in temperature with increasing speed; the unit was running perfectly at the end of the test, the temperature being then 105°C. It was again examined, and except that the contact lines on the inner race had increased slightly, the condition was unchanged from the previous examination. D.T.D.109 - P.4 - oil was used throughout the tests, and incidentally although the casing was completely filled with lubricant, the only leakage observed was through the speedometer drive. Hs{Lord Ernest Hives - Chair}/W.Bell. | ||