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).
Engine performance, weighing top speed against other features.
| Identifier | ExFiles\Box 65a\3\ scan0306 | |
| Date | 7th September 1931 guessed | |
| -2- realised that the last MPH. is less important than many of the other features, especially missing fire with very light charges. We are hoping to get good results from fixed throats but it seems somewhat doubtful yet, so we make the best of our old one, which is only beaten on maximum peak HP., and wins on many points. R.{Sir Henry Royce} | ||