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 showing detonation curves for a Bentley V engine with 7-1 R.C. pistons using various fuels and governor settings.
| Identifier | ExFiles\Box 97\5\ scan0195 | |
| Date | 1st June 1939 guessed | |
| FIG. II BENTLEY V WITH 7-1 R.C. PISTONS. DETONATION CURVES ON VARIOUS FUELS RANGING FROM DISCOL TO REDLINE N°1 WITH WATER & WITH 38% ZERO IN THE RADIATOR. ------- SHOWS FINAL CURVE ARRIVED AT BY DEDUCTION & BY TRIAL & ERROR WITH SIX DIFFERENT GOVERNOR CURVES. DISTRIBUTOR WITH VERNIER ADJUSTMENT TO D.C.D. 1373 PROVIDES FOR 2° EARLY TO 16° LATE, ALLOWING FOR N° 3 FUEL IN EMERGENCIES. DEGREES ON FLYWHEEL B.T.D.C. ENGINE SPEED R.P.M. T.D.C. 4° LATE 8° LATE | ||