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).
Horsepower dynamometer test results for a 38-HP Daimler 'Silent-Knight' car under various conditions.
| Identifier | ExFiles\Box 126\4\ scan0002 | |
| Date | 8th April 1910 guessed | |
| Actual H.P. Tests for H-P on X43V 38-HP Daimler Car "Silent-Knight" Table Columns (Identified by circled numbers 1-6): 1) Eng. speed 2) H-P complete 3) H-P silencer off 4) H-P free Exhst from Eng. 5) H-P R-R complete latest open silncr 80-lbs compn. 6) H-P R-R less 17% 7) Daimler free plus 17% Table Data: Eng. speed | H-P complete | H-P silencer off | H-P free Exhst | H-P R-R complete | H-P R-R less 17% | Daimler free plus 17% 750 1000 | 24.7 | 27.6 | 30.8 | 37 | 30.7 | 36 1250 | 25.6 | 31.3 | 32.6 | 42.8 | 35.5 | 38 1500 | 25.3 | 34.1 | 36.1 | 47.2 | 39.2 | 42.2 1750 | 23.3 | 34.2 | 35.9 | 46 | 38.2 | 42. Notes: Tests taken on dynamometer by Lowe - 28-1-10 & 27-1-10 ordinary RR car 75 lbs comp H.P. would be about the same compare 3 & 5. RW | ||