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 against crank angle for a 40/50 HP engine's Derby exhaust scheme.
| Identifier | WestWitteringFiles\L\2April1924-June1924\ Scan118 | |
| Date | 1st April 1924 guessed | |
| 40/50 ENGINE. DERBY EXH. SCHEME. PRES. SCALE 1" = 6.2 LBS/[]" PULL NO. 6. R.P.M. 3000 CUT OUT CLOSED & OPEN. MAX. PRESS NEAR END OF EXH. STROKE = 5.3 lbs/[]" INDICATED VOL. EFFC'Y = 88% ATMOS LINE PISTON DISPLACEMENT FOR CRANK ANGLE 6 | ||