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).
Trial report on sample tungsten contacts for a magneto contact breaker.
| Identifier | ExFiles\Box 35\6\ scan 037 | |
| Date | 15th April 1921 | |
| To R & E.{Mr Elliott - Chief Engineer} from EFC. c. C.J. & P.N. c. Da.{Bernard Day - Chassis Design} & E.P. c. By.{R.W. Bailey - Chief Engineer} & Bn.{W.O. Bentley / Mr Barrington} c. EWT. for R.R. Inc. X 2894 EFC3/T15.4.21. X.2894 - SAMPLE TUNGSTEN CONTACTS FOR MAGNETO & CONTACT BREAKER. Herewith please receive copy of my assistant's report on the trial of some sample tungsten contacts received from Messrs. G.G. Blackwell & Sons, Ltd., these having been run on a standard Watford E.6 magneto. This is the best result we have had so far with tungsten contacts on magnetos, which are by no means equivalent to platinum. Tungsten contacts attached. EFC. | ||