Graph plotting actual and theoretical performance curves (BHP and BMEP vs RPM) for an Eagle IX engine.
| Identifier | WestWitteringFiles\N\July1925-September1925\ Scan171 | |
| Date | 1st August 1925 guessed | |
| B.H.P. B.M.E.P. R.P.M. 450 440 430 420 410 400 390 380 370 360 350 140 130 120 1700 1800 1900 2000 2100 2200 2300 C D CURVE No. IX ACTUAL & THEORETICAL CURVES COMPRESSION RATIO 6.09/1 EAGLE(Aero Engine) IX CAMSHAFT INLET VALVE TIMING T.D.C I.O. 14° I.C. 54° C. EAGLE(Aero Engine) VIII CARBS D. {John DeLooze - Company Secretary} EAGLE(Aero Engine) IX CARBS ACTUAL THEORETICAL (BASED ON III) CONDOR(Aero Engine) IV COMP. RATIO 6.01/1 (CALCULATED) CORRECTED FOR BAROMETER & TEMP. | ||
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).