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).
Page discussing the use of an undertype slot for 4 or 6 port induction pipes, referencing blueprint LeC.2509.
| Identifier | ExFiles\Box 22\1\ Scan301 | |
| Date | 17th January 1928 guessed | |
| contd :- -2- The question of using the undertype slot applies of course to either 4 or 6 port induction pipes. Blueprint LeC.2509 herewith. E.{Mr Elliott - Chief Engineer} | ||