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).
Extract detailing the cause of oil leaks in the 'Hoshawk' engine crankshaft.
| Identifier | ExFiles\Box 74\3\ scan0218 | |
| Date | 28th September 1920 | |
| X3208 Extract from Hs{Lord Ernest Hives - Chair}2/LG28.9.20. X.3481. RE "HOSHAWK" ENGINE. ------------------------- X.3536. X.3208. We find that the reason the oil leaks from the front and rear end of the crankshaft is because there were no drain holes drilled through into the crankcase. | ||