Outlining the main problems with the 16 HP engine and proposed testing solutions.
| Identifier | ExFiles\Box 124\2\ scan0390 | |
| Date | 12th January 1944 | |
| 1044 CONFIDENTIAL. To: Wym. {G. Harold Whyman - Experimental Manager} from Rm. {William Robotham - Chief Engineer} Rm. {William Robotham - Chief Engineer} 4/h. 12.1.44. c.c. to FJH {Fred J. Hardy - Chief Dev. Engineer} /CTS. {C. Trot Salt - Carburation} 16 H.P. ENGINE. It is clear that we have three main problems in connection with this unit at the moment : 1. The evolution of a successful induction system giving a reasonable consumption. 2. The elimination of noises which are at present in evidence on the engine. 3. Reduction of cylinder bore wear to a reasonable degree. With this object in view, it is necessary to get two 16 h.p. engines running at the earliest possible moment; one of which may well be built up out of the pieces at present on the 14 h.p. One will have to be run on the test-bed - the other in the vehicle. In order to get a target at which to aim, I think we may well run the 14 h.p. Hillman at the same weight as Silver Ripple(Small prototype with 3.5 litre 6-cylinder engine), and check the figures obtained. It will, of course, be necessary to run one car behind the other to get a comparative consumption figure which means anything. Rm. {William Robotham - Chief Engineer} (Transcribed in the absence of Mr. Robotham) | ||
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).