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).
With a graph comparing the hand control characteristics of Scintilla magneto and R.R. battery ignition systems.
| Identifier | ExFiles\Box 48\2\ Scan136 | |
| Date | 14th July 1924 | |
| X.8795 SECRET To E. {Mr Elliott - Chief Engineer} & Hs. {Lord Ernest Hives - Chair} from R. {Sir Henry Royce} c. CJ. BJ. Wgr. c. Rg. {Mr Rowledge} By. {R.W. Bailey - Chief Engineer} EFC. {E. Fowler Clarke - Electrical Engineer} c. Da. {Bernard Day - Chassis Design} PN. {Mr Northey} RL/M14.7.24. E.A.C.II. IGNITION. SCINTILLA MAGNETO & R.R. BATTERY. X.9780. X.9790. X.4187. It was pointed out that by varying the characteristics of the rate of hand control of the battery and magneto ignitions, we could get over the difference of the required and available amount of hand control of each respectively, something like this :- [GRAPH] Rate of advance. Magneto [area = total.] Battery [area = total.] Advance. For starting on the spark. For variations. Full hand control. R. {Sir Henry Royce} | ||