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).
Blueprint graph comparing engine performance (B.HP vs R.P.M.) with associated valve timing diagrams.
| Identifier | ExFiles\Box 13\2\ 02-page097 | |
| Date | 12th June 1931 guessed | |
| SHEET 3 A 19 7.5 59 67 B 12 14 65.5 60 .020 CLCE. 110° SHAFT B.H.P. ENGINE R.P.M. C. I HEAD 4.9 CR.{Mr Cra???ster / Mr Chichester} LARGE DIA: VALVES. 114° CAMSHAFT TO E.32381 R.{Sir Henry Royce} ENGINE CAMS CLAUDEL CARB. | ||