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).
Requesting a valve lift chart and calculations for the 7 CA cam movement to compare against the standard design.
| Identifier | Morton\M11\ img096 | |
| Date | 8th January 1919 guessed | |
| To BY.{R.W. Bailey - Chief Engineer} from E.{Mr Elliott - Chief Engineer} [Handwritten annotations]: 23UP099 MAD ADT E4/G7119 Contd. [Graph labels]: STANDARD VALVE LIFT 7 CA CAM LIFT PLOTTED IN LIEU OF VALVE LIFT. So far as we recollect, Mr. Stent made the necessary calculations for the 7 CA movement, and we should be glad if you could throw any light on the points raised. We expect to receive in due course, drawings of the INLET CAM shape. We shall then compare these in a similar manner with the original standard. As pointed out in the beginning of this letter, we should like the VALVE LIFT chart for both inlet and exhaust, but failing this, we should like a table of values of the VALVE LIFT, together with the values of the accelerations and durations of accelerations. E.{Mr Elliott - Chief Engineer} [Signature] | ||