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 oil consumption against RPM for an E.A.C. Engine V Series at 3/4 full load, comparing different piston and ring types.
| Identifier | ExFiles\Box 72\1\ scan0010 | |
| Date | 31th March 1925 | |
| E.A.C. ENGINE V SERIES. OIL CONSUMPTION AT 3/4 FULL LOAD. Y-AXIS: OIL CONSUMPTION. PTS PER. HOUR. X-AXIS: R.P.M. DATA SERIES 1: OLD TYPE STD. PISTONS WITH STD. RINGS & SCRAPER DATA SERIES 2: LATEST PISTONS (PISTONS E 73407) & STD. RINGS (RINGS E 73287-91) DATA SERIES 3: OLD TYPE PISTONS WITH 'L' SECTION RINGS PISTONS E 73273 RINGS E.{Mr Elliott - Chief Engineer} 73287-91. | ||