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).
List of engine settings comparing different ignition timings, RPMs, pipe sizes, and carburettor types.
| Identifier | ExFiles\Box 155\1\ scan0208 | |
| Date | 6th April 1936 guessed | |
| 1 1/2 RETARD 350 R.P.M. SMALL PIPE. SMALL CARBURETTERS. 1 FULLY ADVANCED 450 R.P.M. SMALL PIPE. SMALL CARBURETTERS. 2 1/2 RETARD 350 R.P.M. SMALL PIPE. LARGE CARBURETTERS 2 FULLY ADVANCED. 450 R.P.M. SMALL PIPE. LARGE CARBURETTERS 3 1/2 RET T.D.C. 350 R.P.M. LARGE PIPES. LARGE CARBURETTERS. 3. FULLY ADVANCED B.A.I. 450 R.P.M. LARGE PIPES. LARGE CARBURETTER. | ||