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 plotting specific petrol consumption against dynamometer load for a Phantom Engine No. HU 25 at 1000 RPM, comparing a standard induction pipe with a Weir induction pipe.
| Identifier | ExFiles\Box 66a\2\ scan0190 | |
| Date | 21th April 1928 guessed | |
| [ "V313.", "SPECIFIC CONSUMPTION AT 1000 R.P.M.", "PHANTOM ENGINE No. HU 25.", "COLD HOT SPOT.", "PETROL CONSUMPTION (PTS/BHP/HR)", "WEIR INDN PIPE (SCH 965)", "STD. INDN. PIPE", "DYNAMOMETER LOAD (LBS.)" ], | ||