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).
Request to temporarily fit two large Burgess exhaust silencers to a test bed engine for power loss checks.
| Identifier | ExFiles\Box 124\2\ scan0030 | |
| Date | 1st February 1940 | |
| 1044 To HPS.{Horace Percy Smith - Experimental Factory Mgr} c. HPS{Horace Percy Smith - Experimental Factory Mgr}/RH.{R. Hollingworth} Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager}1/BA.1.2.40. B.80 - Exhaust System. We now have 2 large exhaust silencers of the Burgess type to replace the 4 small silencers previously fitted, and to enable us to check them for power loss we would like you to fit them up to the Test bed engine temporarily. We shall require 2 downtake pipes 2.00 dia and 6ft long and 2 tail pipes 1.750 dia also 6ft long. These pipes can be a sliding fit and secured by Jubilee clips instead of flanges. Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} | ||