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).
Ignition timing diagram for the E.A.C.10 engine.
| Identifier | ExFiles\Box 37\1\ scan 313 | |
| Date | 26th September 1928 | |
| DEGREES OF ADVANCE ON ENGINE -20, -10, 0, 10, 20, 30, 40, 50 FULL BATTERY RETARD 0° FULL MAG RETARD 5° HAND ADV. BATTERY IGNITION 30° HAND ADV. MAGNETO 15° IGNITION TIMING DIAGRAM FOR E.A.C.10 ENGINE TO R/M 19-3-28 H.E.W. 26-9-28 IGNITION LEVER TRAVEL RETARD ADVANCE A.T.C B.T.C SYNCHRONIZATION OCCURS AT MIDDLE OF TRAVEL AUTO ADVANCE RANGE 25° FULL ADVANCE 45° | ||