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 operational silence and the tangential force required to advance the cam lever.
| Identifier | ExFiles\Box 57\2\ Scan162 | |
| Date | 30th December 1926 guessed | |
| -6- (16) Remarks re silence of operation :- Reasonably quiet (17) Tangential force to advance cam lever:- 3 lbs wt. EPC. | ||