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).
The design of oil pumps, specifically their gear obliquity and history of no noise complaints.
| Identifier | ExFiles\Box 149\2\ scan0004 | |
| Date | 29th August 1919 | |
| To E.{Mr Elliott - Chief Engineer} from EH. c. to Bn.{W.O. Bentley / Mr Barrington} c. to BY.{R.W. Bailey - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} EH2/LG29.8.19. RE OIL PUMPS X.3449. The present oil pumps we are using on the chassis have no small recess opposite the point of the meshing of the teeth. The gears are of the 20° obliquity. This type of pump has been standard on the chassis for some considerable time and we have had no complaint of noise. EH. | ||