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).
Design simplification for the 20 HP oil pump drive.
| Identifier | WestWitteringFiles\C\August1919\ Scan26 | |
| Date | 27th August 1919 | |
| To DA.{Bernard Day - Chassis Design} from E.{Mr Elliott - Chief Engineer} Copy to CJ. " " BN.{W.O. Bentley / Mr Barrington} " " EH. ORIGINAL. 4 E1/G27/8/19. RE 20 H.P. OIL PUMP DRIVE. X.3610 1919 X.35787 RECEIVED When dealing with the oil pump drive for the 20 H.P. engine, it has been found necessary to carry the intermediate wheel and the camshaft driving gear of the wheelcase, together with the oil pump driving wheel on one stout shaft. This scheme is simpler and lighter than the drive as originally conceived. You will not now require the pivot for holding the intermediate gear, as given on the scheme for the 20 H.P. wheelcase and gears. E.{Mr Elliott - Chief Engineer} | ||