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 specific petrol consumption versus dynamometer load for a Phantom engine, comparing standard and Weir induction pipes.
| Identifier | WestWitteringFiles\S\March1928-May1928\ Scan120 | |
| Date | 20th 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.) Y-Axis values: 1.00, .90, .80, .70, .60, .50 X-Axis values: 120, 130, 140, 150 | ||