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).
Experiments with tungsten points and ignition coils for reduced current.
| Identifier | WestWitteringFiles\N\July1925-September1925\ Scan44 | |
| Date | 20th July 1925 | |
| Contd. -3- 8680 EPCS/T20.7.25. In addition we have the experiments of the larger tungsten points, and also separately or in conjunction with, as the case may be, ignition coils with finer primaries for reduced current. EPC. | ||