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).
Diagram of a needle valve assembly for a starting carburetter.
| Identifier | ExFiles\Box 13\3\ 03-page214 | |
| Date | 31th May 1930 guessed | |
| STARTING CARBURETTER & E2731 MODIFIED NEEDLE WITH 30° SEAT NEEDLE VALVE SEATING .031" MAX RESTRICTION HOLE | ||