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 detailing experiments with various carburetter and manifold configurations, including a blueprint diagram.
| Identifier | ExFiles\Box 66a\1\ scan0137 | |
| Date | 1st August 1926 guessed | |
| contd :- -3- efficiency than the square bends of the other type. With this type we were able to make direct comparison by swinging round the adjustable flange and fitting a standard hot spot bend and carburetter. In the standard position the distribution was bad and power consequently low. During these experiments it was found better to employ a short length of feed pipe (about 6") between the carburetter and distributing pipe than bolt the carburetter direct to the distributing pipe. A system employing two Eagle carburetters and practically identical to the Hispano system was tested. See sketch No.4. This also proved to be very good and gave slightly more power than either of the other systems. This is probably the result of avoiding over-lapping of suction strokes and the lower depression due to two carburetters being used. From consideration of the results of these experiments the distribution troubles we experience with the standard system at low speeds seems to be due to separating out of fuel at contd :- Blueprint text: ADJUSTABLE FLANGE EAGLE CARBS ON MODIFIED STD MANIFOLD No 3. | ||