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).
Carburation issues, including water-heated versus exhaust-heated hot spots and ignition.
| Identifier | ExFiles\Box 123\1\ scan0017 | |
| Date | 22th January 1940 | |
| 1036 To Ev.{Ivan Evernden - coachwork} from Rm.{William Robotham - Chief Engineer} c. Jnr.{Charles L. Jenner} c. Rm{William Robotham - Chief Engineer}/FD.{Frank Dodd - Bodies} c. Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} c. Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation} c. Rm{William Robotham - Chief Engineer}/RC.{R. Childs} Rm.{William Robotham - Chief Engineer}2/MR.22.1.40. CARBURATION. In general I agree with these notes, but have yet to be convinced that a properly applied water heated hot spot is inferior to an exhaust heated hot spot. We have, however, in the immediate future to establish this point. We must not allow the existing spell of cold weather plus Pool petrol to give us an unduly pessimistic view of our carburation problems. So far the S.U.'s have not been tried with small pipes to see what ultimate economy can be achieved with the expanding carburetter. Swinden has not mentioned ignition. Undoubtedly this is vitally important and we are working to get the right spark and maintain it for the longest possible period. Rm.{William Robotham - Chief Engineer} | ||