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 quiet operation of a magneto and the tangential force required to move a cam cover.
| Identifier | ExFiles\Box 40\2\ Scan111 | |
| Date | 4th May 1926 guessed | |
| -6- (16) Remarks re silence of operation:- Very quiet magneto - contact breaker exceptionally quiet. (17) Tangential force measured at lever radius to move cam cover = 1.0 lbs. EFC. | ||