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).
Performance comparison graph for Eagle VIII and Eagle IX carburettors at a 5.27/1 compression ratio.
| Identifier | ExFiles\Box 43\1\ Scan100 | |
| Date | 28th August 1925 guessed | |
| B.H.P. B.M.E.P R.P.M. C D CURVE Nº III CARBURETTER. COMPARISON CURVES COMPRESSION RATIO 5·27/1 EAGLE IX CAMSHAFTS B INLET VALVE TIMING T.D.C. 14º 54º B.D.C. C = EAGLE VIII CARBURETTERS. D = EAGLE IX CARBURETTERS. CORRECTED FOR BAROMETER & TEMP. CONDOR I.A. COMP. RATIO 5·17/1 | ||