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).
Performance comparison between the standard carburetter and a Claudel carburetter, including test data.
| Identifier | ExFiles\Box 121\3\ scan0019 | |
| Date | 26th February 1915 guessed | |
| 2. is cold and stiff without priming. The noise from a Claudel carburetter when it is running half throttle is most objectionable. The mixture is not as good at various speeds and loads as with our own, to get it to work reasonably with varying temperatures it is necessary for the mixture to be on the strong side. The Claudel as far as we have tested have one advantage over the R.R., that is, it is possible to get more HP with it. When we are testing the R.R. aero engine carburetter this might suggest possibilities of altering the standard carburetter to give more HP and yet retain its present desirable features. All of our tests so far with the Claudel have been on the test engine, does Mr Royce wish us to fit one on to a car? | Revs. | Standard carburetter | Claudel carburetter. | Remarks. | |---|---|---|---| | 750 | 34.4 | 35.3 | The compression was 62 lbs with R.R., 65 lbs with the Claudel, the same clearance volume in each case. | | 1000 | 46.25 | 48.75 | | | 1250 | 56.7 | 60.9 | | | 1500 | 65.6 | 69.5 | | | 1750 | 70.7 | 76 | | | 2000 | 72.7 | 80 | | | ||