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 comparing performance against R.P.M. for different cylinder head, valve timing, and compression ratio configurations under constant detonation.
| Identifier | ExFiles\Box 134\2\ scan0123 | |
| Date | 9th July 1937 | |
| HIGH POWER HEAD - CONSTANT DETONATION 1) INCLINED VALVE HEAD AND DRY LINER BLOCK. C.R. 5.3 VALVE TIMING: I.O. T.D.C. I.C. 30°L. E.O. 35°E.{Mr Elliott - Chief Engineer} E.C. T.D.C. EXHAUST VALVE = 1.500" 2) INCLINED VALVE HEAD AND CAST IRON BLOCK C.R. = 5.9 VALVE TIMING: I.O. T.D.C. I.C. 30°L. E.O. 35°E.{Mr Elliott - Chief Engineer} E.C. T.D.C. EXHAUST VALVE = 1.600" 3) STANDARD BENTLEY C.R. = 6.4 VALVE TIMING: I.O. 4°E.{Mr Elliott - Chief Engineer} I.C. 51°L. E.O. 51°E.{Mr Elliott - Chief Engineer} E.C. 7°L. 4) AS CURVE 2 BUT C.R. = 6.4 R.P.M. | ||