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).
Performance data and discussion for the 'Falcon' engine with various fuel types and throttle settings.
| Identifier | ExFiles\Box 36\2\ scan 056 | |
| Date | 10th February 1919 | |
| To Mr. Walker. from EH. X.2934 EH2/LGLO.2.19. 10th. Feb. 1919. Herewith particulars of "Falcon" engine as requested. The HP. of the engine is above the average. The consump-tion is about the average. We think that if this power is put into a catalogue, a note should be made that a 2 1/2% reduction in power should be allowed to cover the variation in different engines. As regards the throttling down curves, I think you should submit these to Mr. Elliott to make certain they are what he asked for in his memo. FALCON. Petrol .720 gravity. 20% benzol. .750 gravity 80% petrol. Revs. HP. Cons. lbs. per. HP. HP. Cons. Lbs. per. HP. 2200 297.5 .486 301 .490 2000 284.0 .477 288 .490 1800 265.0 .486 269 .490 1600 239.0 .495 244 .502 1400 207.0 .504 213 .502 1200 170 .504 178 .502 Brake set of 2000 r.p.m. ( full throttle) Revs. HP. Lbs. per. HP. 2000 288 .490 1800 242 .502 20% benzole. 1600 166 .593 80% petrol. 1400 111 .706 1200 722 .885 Brake set at 1900 r.p.m. (full throttle) Revs. HP. Lbs. per. HP. 1900 279 .490 1800 267 .490 20% benzole. 1600 178 .570 80% petrol. 1400 122 .660 1200 83 .840 Brake set at 1800 r.p.m. (full throttle) Revs. HP. Lbs. per. HP. 1800 269 .490 1600 236 .563 20% benzole. 1400 130 .660 80% petrol. 1200 93 .810 EH. | ||