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 Brake Mean Effective Pressure curves comparing various Cadillac and Rolls-Royce products.
| Identifier | ExFiles\Box 13\2\ 02-page180 | |
| Date | 26th September 1934 guessed | |
| G.M.C. CORRECTION TO 103 °F.{Mr Friese} BRAKE MEAN EFFECTIVE PRESSURE CURVES CADILLAC & ROLLS-ROYCE PRODUCTS LBS/SQ. IN. B.M.E.P. DEGREES H.P. R.P.M. (÷ 100) CURVE LABELS: SIXTEEN DUPLEX CARB DOWNDRAUGHT 6.49 C/R BENTLEY SIXTEEN SINGLE UPDRAUGHT 6.49 C/R 20/25 R.R TABLE 1: DURATION INLET | EX | MODEL | EX. O.{Mr Oldham} | EX. C. | IN. O.{Mr Oldham} | IN. C. 204 | 206 | CADILLAC V.12 | 25° B. | 1° A.{Mr Adams} | 15° A.{Mr Adams} | 39° A.{Mr Adams} 197 | 196 | CADILLAC V.16 | 23° B. | 6° B. | 15° A.{Mr Adams} | 31° A.{Mr Adams} 210 | 210 | LA{L. A. Archer} SALLE LINE 8 | 30° B. | T.D.C. | 11 A | 41° A.{Mr Adams} 213 | 230 | STANDARD 20/25 | 44 B. | 6° A.{Mr Adams} | T.D.C. | 40.5 A 234 | 238 | BENTLEY 3½ LITRE | 47 B. | 11° A.{Mr Adams} | 1.B. | 52.5A. TIMINGS .020 TAPPET CLEARANCE RIGHT Y-AXIS: LB/FT. LB/H.P. HR FUEL x 100 ÷ AIR x 10 PER CENT (10) FUEL CONS (0) LEGEND (Bottom Right): ENGINE MOD & SERIAL N⁰ | TEST DATE | POWER & ECONOMY | B.M.E.P. CURVES | OBJ CORR. * CADILLAC 452 CU IN V.16 DUPLEX DOWNDRAFT CARBURETTERS - 6.49 C.R CADILLAC 452 CU IN V.16 STD UPDRAFT CARBURETTERS - 6.49 C.R CADILLAC 368 CU IN V.12 STD. UPDRAFT CARBURETTERS - 5.55 C.R. LA{L. A. Archer} SALLE 5.9 C.R. 240 CU INS 8 CYL. * G.M.C. CORRECTION 60°F 20/25 5.8 C/R 222 CU. INS LATEST SU CARB BENTLEY 6.4 C/R DUPLEX CARB. 222 CU. INS. | ||