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).
Recommendations for redesigning the relief valve and increasing the size of the Bentley oil pump.
| Identifier | ExFiles\Box 17\6\ Scan310 | |
| Date | 6th September 1934 | |
| -3- HS{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}11/KW.6.9.34. (11) We think that the 20/25 and Bentley relief valve is due to a re-design and should be made like the Phantom. (12) The Bentley oil pump is now on the small side due to the increased bearing size and engine speeds. This will be particularly noticeable when we fit lead bronze big ends. We recommend that the size of the oil pump should be increased by at least 25%. HS{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||