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).
The trial of sample tungsten contacts for a magneto contact breaker, noting they are not equivalent to platinum.
| Identifier | WestWitteringFiles\F\April1921\ Scan76 | |
| Date | 15th April 1921 | |
| & E.{Mr Elliott - Chief Engineer} To R.{Sir Henry Royce} from EFC. c. CJ. & PN.{Mr Northey} c. Da.{Bernard Day - Chassis Design} & EP.{G. Eric Platford - Chief Quality Engineer} c. By.{R.W. Bailey - Chief Engineer} & Bn.{W.O. Bentley / Mr Barrington} c. EWT. for R.R.Inc. ORIGINAL. 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 attach. EFC. | ||