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 comparing the detonating qualities of Ethyl and Discol fuels with standard air and exhaust silencers fitted.
| Identifier | ExFiles\Box 150\1\ scan0318 | |
| Date | 2nd February 1938 | |
| COMPARISON OF FUELS DETONATING QUALITIES STD AIR & EXHAUST SILENCERS FITTED B.M.E.P. (LBS/SQ") R.P.M. SPARK ADVANCE. NON - DETONATING M.E.P. (ETHYL) NON - DETONATING M.E.P. (DISCOL) B.M.E.P. ETHYL B.M.E.P. DISCOL MIN. ADVANCE FOR MAX POWER (ETHYL) DISCOL SPARK POSITION FOR NON - DETONATION (DISCOL) SPARK POSITION FOR NON - DETONATION (ETHYL) G.W. 2.2.38 | ||