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 graphs for B.80, B.60, and B.V. engines under various test conditions.
| Identifier | ExFiles\Box 124\2\ scan0304 | |
| Date | 18th March 1941 guessed | |
|
Graph 1 (Top-Left): {
Title: B.80 Nº1,
Y-Axis: B.H.P., B.M.E.P.,
X-Axis: R.P.M.,
Specifications: CYL. HEAD E.B. 4088 C/R - 6.3:1 CAMSHAFT E.B. 4105 VALVE TIMING @ .030" I.O. 15° A.T. E.O. 42° B.B. I.C. 33° A.B. E.C. 3° B.T. INDN SYSTEM. EVS. 925 STROMBERG AA{D. Abbot-Anderson} 25 CARB. 1-6 DIA. PIPE. PISTONS. AEROLITE E.B. 3916, Legend: ① OPEN EXHAUST ② WITH BUICK AIR SILENCER ③ AS ② PLUS FAN ④ AS ③ PLUS BUICK EXH. SYSTEM. ⑤ AS ④ CORRECTED TO 50°C. (UNDER BONNET TEMP.) }, Graph 2 (Top-Right): { Title: B.60 Nº3, Y-Axis: B.H.P., B.M.E.P., X-Axis: R.P.M., Specifications: CYL. HEAD - EXS. 1384 & 1758 (INC. THROAT DEEP PLUG RECESS.) COMP. RATIO - 7:1 CAMSHAFT - VALVE TIMING @ .030 CLCE I.O. 9° A.T. E.O. 30° B.B. I.C. 47° A.B. E.C. 7° A.T. INDN SYSTEM - AS B.V. 2 H4-S.U. CARBS. ON 1-6 PIPE PISTONS. AEROLITE "FLUSH TOP", Legend: ① OPEN EXHAUST ② WITH TEST BED EXH. SYSTEM ③ NON-DETN AS ② (REDLINE), Note: NOTE:- THE TEST BED EXH. SYSTEM FIGURES ARE EQUIVALENT TO A DUAL EXH. SYSTEM FOR POWER LOSS. }, Graph 3 (Bottom-Left): { Title: B.80 Nº7, Y-Axis: B.H.P., B.M.E.P., X-Axis: R.P.M., Specifications: CYL. HEAD E.B. 4098 C/R.{Sir Henry Royce} 6.3:1 (124 ccs.) CAMSHAFT E.B. 4512 VALVE TIMING @ .030 I.O. 10° A.T. E.O. 42° B.B. I.C. 29° A.B. E.C. 2° B.T. INDN SYSTEM. STROMBERG A.A. 25 CARB. PISTONS. AEROLITE E.B. 3916, Legend: ① OPEN EXHAUST ② WITH TEST BED EXH. SYSTEM ③ NON DETN. AS ② (REDLINE) }, Graph 4 (Bottom-Right): { Title: B.V. Nº7, Y-Axis: B.H.P., B.M.E.P., X-Axis: R.P.M., Specifications: CYL. HEAD - C/R - 6.5:1 CAMSHAFT - VALVE TIMING @ .030" I.O. 2° A.T. E.O. 38° B.B. I.C. 43° A.B. E.C. 2° A.T. INDN SYSTEM - E.B. 3477 2 H.4 S.U. CARBS. ON 1-6 PIPE. PISTONS:- P. 451/A AEROLITE (200 BUMP.), Legend: ① OPEN EXHAUST ② WITH B.II EXH. SYSTEM ③ NON. DETN AS ② (REDLINE) } | ||