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).
Report page discussing Austenitic steel, carburettors, ignition timing, and the P.2. model.
| Identifier | ExFiles\Box 65a\3\ scan0214 | |
| Date | 3rd May 1930 | |
| RL/M 3.5.30 contd. -3- I am not altogether sorry because the Austenitic steel was not good for the end and guide. Can we have these items on test? They require nothing from E.{Mr Elliott - Chief Engineer} or R.{Sir Henry Royce} (7) CARBURETTERS. It appears that we ought to have running several specimens of double and other carburetters for better high and low speed torques. I am very anxious to hear if Solex or similar Claudel pattern carburetters can be made to give passable consumption. We are proposing E.{Mr Elliott - Chief Engineer} shall have one of his assistants on a suitable aero pattern double carburetter for P.2. In the meantime we should be getting knowledge with temporary schemes. Naturally, if we can find any good enough available in commerce we may not need to design. This I doubt, and it would hardly suit RR. policy of being exclusive (i.e. not included in the common mass production crowd). (8) (a) Regarding the ignition timing we have always tried to give rather more auto-advance so as to give a sweet non-detonating engine at slow speed. We should carefully watch this but it cannot be overdone as the pick-up seems then to want a stronger mixture setting, or the driver merely increases his hand adjustment and undoes our attempts, and has too much advance at speed. even our own people do this. (9) P.2. will probably need, for both ourselves and USA. the freewheel sideshaft, and also the 25 HP. Especially does this apply, one thinks, to the USA. where they already have something, and less skilful drivers - i.e. greater proportion of owner drivers and amateurs, (like members of the family. R.{Sir Henry Royce} | ||