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 pressure versus crank angle for a 40-50 engine's Derby exhaust scheme.
| Identifier | ExFiles\Box 66\2\ scan0038 | |
| Date | 28th April 1925 guessed | |
| 40-50 ENGINE. DERBY EXH. SCHEME. PRESS. SCALE 1" = 6.2 lbs/□" CYL. NO 6. R.P.M. 2000. CUT OUT [text crossed out] OPEN. MAX. PRESS NEAR END OF EXH. STROKE = 5.3 lbs/□" INDICATED VOL. EFFCY = 88%. ATMOS. LINE PISTON DISPLACEMENT FOR CRANK ANGLES. 6. | ||