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).
Blank table for comparing weights and weights per horsepower of various series of 'Falcon' engines.
| Identifier | ExFiles\Box 36\2\ scan 043 | |
| Date | 11th November 1917 guessed | |
| (4) COMPARATIVE WEIGHTS & WEIGHTS PER H.P. OF "FALCON" ENGINES OF VARIOUS SERIES. Series 1. Series 2. Series 3. Series 4. Series 5. Weight (lbs) without radiator, water, oil, propeller hub, starting gear, exhaust boxes, or engine feet. Weight (lbs) per H.P. at 2000 R.P.M. | ||