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 detonation curves for a 21 G.T. car, comparing turbulent and deturbulated cylinder heads with different ignition systems.
| Identifier | ExFiles\Box 82\4\ scan0334 | |
| Date | 9th June 1936 guessed | |
| DETONATION CURVES TAKEN ON 21 G.T. CAR WITH FIXED IGNITION AND USING BOTH TURBULENT & DETURBULATED CYLINDER HEADS TURBULENT HEAD | 126 C.C.'S | 6 : 1 COMPRESSION RATIO | E.60660 DE - TURBULATED " | 133 " | 5.86 : 1 " | LEC. 5002 LEGEND: A.{Mr Adams} DE-TURBULATED HEAD. FIXED DELCO IGN. B. DE-TURBULATED HEAD. FIXED R.R. IGN. C. STANDARD TURBULENT HEAD. FIXED DELCO IGN. D.{John DeLooze - Company Secretary} STANDARD TURBULENT HEAD. FIXED R.R. IGN. E.{Mr Elliott - Chief Engineer} IDEAL CURVE FOR POWER SUPPLIED FROM TEST BED BY L.H.S.{Lord Herbert Scott - Chair} AXIS LABELS: Y-AXIS: DEGREES ADVANCE ON FLYWHEEL X-AXIS: M.P.H SIGNATURE: G.H. WHYMAN | ||