Graph of piston displacement for crank angles for a 40-50 engine with a standard exhaust system and closed cut out.
| Identifier | ExFiles\Box 66\2\ scan0033 | |
| Date | 4th April 1924 guessed | |
| Indicated Vol. Efficiency 40-50 ENGINE. STANDARD EXH. SYSTEM. CUT OUT CLOSED. PRESS. SCALE 1" = 6.2 lbs/□". CYL NO. 6. R.P.M. 2000. MAX PRESS. AT END OF EXH STROKE = 7.13 lbs/□" INDICATED VOL. EFFCY = 88%. ATMOS. LINE PISTON DISPLACEMENT FOR CRANK ANGLES. X8230 43436 | ||
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).