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 listing new parts fitted to the 40/50 chassis compared to the pre-war version.
| Identifier | ExFiles\Box 74\2\ scan0258 | |
| Date | 27th August 1919 | |
| X.3439 Extract from EHL/LG27.8.19. The following is a list of new parts which have been fitted to the 40/50 chassis, which we are now making compared with the 40/50 HP. chassis we made previous to the War. NEW PART. WHETHER STANDARDISATION SHEETS SIGNED. 7. Slipper Flywheel - reduced in dia. No. | ||