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).
Remarks on the operational silence of a specially made quiet magneto.
| Identifier | ExFiles\Box 40\2\ Scan100 | |
| Date | 12th April 1926 guessed | |
| -6- (16) Remarks re silence of operation:- Quiet magneto made up specially with quieter gears and contact-breaker Contact breaker and gears very quiet. Slight bearing noise at certain high speeds. F H C ROYCE EFC. [Watermark: DICKINSON BOND 1809] | ||