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 comparing Brake Mean Effective Pressure curves for various Cadillac and Royce products.
| Identifier | ExFiles\Box 126\1\ scan0200 | |
| Date | 1st August 1933 | |
| BRAKE MEAN EFFECTIVE PRESSURE CURVES. G.M.C. CORRECTION TO 103 °F.{Mr Friese} CADILLAC & ROLLS-ROYCE PRODUCTS. Graph Labels: SIXTEEN DUPLEX CARB. DOWNDRAUGHT. 6.49 C/R BENTLEY SIXTEEN SINGLE UPDRAUGHT 6.49 C/R 20/25 R.R Legend: ENGINE. MOD. & SERIAL N°. TEST DATE. POWER & ECONOMY. OBJ. CORR. B.M.E.P. CURVES *---* 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 - 5.59 C/R * C.M.C. CORRECTION 60°F ∆----∆ LA{L. A. Archer} SALLE 5.9 C/R 240 CU. INS 8 CYL. DUPLEX CARB. LATEST S.U. CARB. ∆----∆ 20/25 5.8 C/R.{Sir Henry Royce} 222 CU. INS. -x--x- BENTLEY 6-4 C/R DUPLEX CARB. 222 CU. INS. Tables: TIMINGS .020 TAPPET CLEARANCE. Ex. O Ex. C In. O In. C CADILLAC V12 23° B. 6° B. 15° A.{Mr Adams} 31° A.{Mr Adams} CADILLAC V16 30° B. T.D.C. 11° A.{Mr Adams} 41° A.{Mr Adams} LA{L. A. Archer} SALLE LINE 8 44° B. 5° A.{Mr Adams} T.D.C. 40.5 A.{Mr Adams} STANDARD 20/25 47° B. 11° A.{Mr Adams} 1.B 52.5 A.{Mr Adams} 25° B. 1° A.{Mr Adams} 15° A.{Mr Adams} 39° A.{Mr Adams} DURATION INLET EX CADILLAC V12 197 196 CADILLAC V16 210 210 LA{L. A. Archer} SALLE LINE 8 213 230 BENTLEY 3 1/2 LITRE 234 238 204 206 Axis Labels: Left Y-Axis: B.M.E.P., LBS/SQ. IN., HP, DEGREES Right Y-Axis: R.P.M. (÷100) Top Right (upside down): FOR. CENT. (10), LB/HP.MR. FUEL x 100 - AIR x 10, LB/FT | ||