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 plotting piston displacement and pressure against crank angles for a 40/50 engine's exhaust stroke.
| Identifier | WestWitteringFiles\L\2April1924-June1924\ Scan117 | |
| Date | 4th April 1928 guessed | |
| 40/50 ENGINE. DERBY EXHAUST SETTING. PRESS. SCALE 1" = 6.2 lbs/sq in CYL. NO. 6. R.P.M. 2000. CUT-OUT CLOSED MAX. PRESS. NEAR END OF EXHAUST STROKE = 9 lbs/sq in INDICATED VOL. EFFCY = 88% ATMOS LINE PISTON DISPLACEMENT FOR CRANK ANGLES. 5 | ||