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 power curves, torque, and B.M.E.P. for a single-cylinder engine.
| Identifier | ExFiles\Box 134\5\ scan0001 | |
| Date | 12th September 1938 | |
| H.P. R.P.M. 200 B.M.E.P 190 B.M.E.P 180 B.M.E.P 170 B.M.E.P 160 B.M.E.P 150 B.M.E.P 140 B.M.E.P 130 B.M.E.P 120 B.M.E.P 110 B.M.E.P 100 B.M.E.P "B" "A" TORQUE. BORE. 74 M/M.{Mr Moon / Mr Moore} - 2.9134" AREA. 43 sq. cm. - 6.665 sq. ins. STROKE. 81 M/M.{Mr Moon / Mr Moore} - 3.189" - .2657 Ft. CAPACITY. 348.3 cc. - 21.254 cub. ins. CURVE "A". DIRECT READING. CURVE "B". CORRECTED FOR CHAIN LOSS. BRITISH PATENT. N° 463412. ORDER DATE POWER CURVES FOR SINGLE CYLINDER ENGINE. 74 M/M BORE. 81 M/M STROKE. F.M. ASPIN & C° LT° ELTON, BURY. DATE. 12-9-38. DRAWN Alex. TRACED. APPRD. SCALES:- ENGINE SERIES DRWG. N° S.110. | ||