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 test bench results showing oil consumption curves for an E.A.C. engine, comparing different piston ring configurations.
| Identifier | ExFiles\Box 180\M3\M3.1\ img012 | |
| Date | 19th May 1925 | |
| OIL CONSUMPTION CURVES FOR E.A.C. ENGINE. TEST BENCH RESULTS. PISTONS WITH SCRAPER RING AT BOTTOM OF SKIRT. AVERAGE STANDARD WITH PLAIN RINGS. OIL CONSUMPTION. PTS/HOUR. R.P.M. ACL-25 | ||