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).
Graph of ignition advance versus engine RPM for E.A.C. and Hispano engines, illustrating the effect of dual ignition.
Identifier | ExFiles\Box 72\4\ scan0153 | |
Date | 12th March 1924 guessed | |
IGNITION ADV. REQUIRED TO OBTAIN MAX. POWER ON E.A.C. & HISPANO. SHOWING EFFECT OF THE SYNCHRONISED DUAL IGNITION ON HISPANO. E.A.C. & HISPANO GIVES AUDIBLE DETONATION TO APPROX. 1000 R.P.M. HISPANO GIVES AUDIBLE DETONATION TO 1000 RPM WHEN USING ONE IGNITION ONLY WITH THE TWO IGNS ON HISPANO THERE IS NO AUDIBLE DETONATION FIRING POSN DEGREES BEFORE TOP CENTRE. ENG. R.P.M. E.A.C. HISPANO 1. PLUG HISPANO 2. PLUGS | ||