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).
Table of performance data showing HP calculations at various speeds and loads, with notes on gear and cutout status.
| Identifier | ExFiles\Box 69\3\ scan0325 | |
| Date | 6th October 1925 guessed | |
| contd :- -2- M.T. lbs. H.P. Barom. HP. X 5. 500 185 = 26.3 - .1 = 26.2 = 131.0 750 183 = 38.8 - .2 = 38.6 = 193.0 1000 175 = 49.3 - .4 = 48.9 = 244.5 1250 168 = 59.2 - .6 = 58.6 = 293.0 1500 160 = 67.4 - .7 = 66.7 = 333.5 1750 151 = 74.5 - .9 = 73.6 = 368.0 2000 143 = 81.0 - .9 = 80.1 = 400.5 cutout open. 3rd. gear 2250 210 " " 2500 182 " " 2750 149 154 = 87.0 - .9 = 86.1 = 430.5 | ||