Indicator diagrams for engine tests with double exhaust pipes and a manifold for each 3 cylinders.
| Identifier | ExFiles\Box 66\2\ scan0029 | |
| Date | 27th February 1925 guessed | |
| E.R.C. INDICATOR DIAGMS. DOUBLE EXH. PIPES. [MANIFOLD TO EXCH 3 CYLS] SHEET 1. Top Left Graph: 2500 RPM 120 lbs YELLOW. EXP. 362. IMEP 110. Top Right Graph: 1000 RPM 147 lbs EXP. 35A 369 IMEP 118.5 103.5 BMEP Handwritten: 103.5 MEP Middle Left Graph: 2000 RPM. 137.5 lbs. YELLOW. EXP. 373 IMEP 120 Middle Right Graph: 600 RPM. 148 lbs. EXP. 354. IMEP 111.5 Bottom Left Graph: 1500 RPM 143.5 lbs YELLOW. EXP. 376 BMEP 100.1 IMEP 120.75 Bottom Right Graph: 2500 RPM COMPN. RED. 28 lbs. Y-Axis Label: lbs/sq in | ||
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).