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).
Comparison table of Brake Horse Power for various series of the 'Falcon' engine at different RPMs.
| Identifier | ExFiles\Box 36\2\ scan 040 | |
| Date | 26th January 1917 | |
| X.2934 COMPARATIVE POWERS OF "FALCON" ENGINES OF VARIOUS SERIES. | SPEED | B.H.P. |||| |---|---:|---:|---:|---:|---:| | R.P.M. | Series 1. | Series 2. | Series 3. | Series 4. | Series 5. | | 1500 | 181.5 | 200 |||| | 1600 | 193.5 | 213 |||| | 1700 | 205 | 225.5 |||| | 1800 | 215 | 236.5 |||| | 1900 | 224 | 245.5 |||| | 2000 | 230 | 253 |||| | 2100 | 231.5 | 259 |||| | 2200 | - | 263 |||| | 2300 | - | 264.5 |||| Side Text: R.R. 235A (600 T) (S.D. 40S. 26-1-17) Bm 2158/13. | ||