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).
Modified engine breather for the Bentley V, adapting a design from the Wraith III.
| Identifier | ExFiles\Box 97\2\ scan0053 | |
| Date | 24th March 1939 | |
| HSD BT{Capt. J. S. Burt - Engineer}/NS.{Norman Scott} c. Rm.{William Robotham - Chief Engineer} c. Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} DA.{Bernard Day - Chassis Design}14/G.24.3.39. BENTLEY V.{VIENNA} MODIFIED ENGINE BREATHER. Please receive herewith :- E.CD.1283 Modified Breather Pipe - BENTLEY V.{VIENNA} With a view to improving the efficiency of the engine breather to extract more gases from the crankcase. Rm.{William Robotham - Chief Engineer} asked for the adaptation of an experiment performed on the Wraith III engine and reported in Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager}5/JH.14.9.38. to be applied to the Bentley V.{VIENNA} engine. As the undersheet of the B.V. does not extend as far back along the engine as the breather pipe, we could not apply the cowling to the undersheet in a similar manner to that tried on the Wraith III, so we have shown a separate sheet metal cowling sweated to the end of the breather pipe to perform the same function. The shape of this cowling could be modified in the course of the experiment to obtain the best results, taking care that the ground clearance is not unduly reduced. Will you please detail and instruct experimentally. DA.{Bernard Day - Chassis Design} | ||