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).
Modifications to an SS exhaust system, including a new silencer design and reduced pipe diameter.
| Identifier | ExFiles\Box 14\6\ Scan100 | |
| Date | 26th July 1929 | |
| x7230 BY.{R.W. Bailey - Chief Engineer} FROM DA.{Bernard Day - Chassis Design} SECRET. DAL/M26.7.29. c. to Sg.{Arthur F. Sidgreaves - MD} Hs.{Lord Ernest Hives - Chair} SS.{S. Smith} EXHAUST SYSTEM. Herewith we send N. sch. 2925. shewing the proposed silencer with the cutout valve at the front end of the central pipe instead of the rear end. It also shews the resulting cutout operating mechanism. It will be noticed that the diameter of the pipe has been reduced from 3" ro{C. C. Rose - Export Manager} 2 1/2". This will necessitate modifications to the front expansion box end plate, which we presume can be done at Derby. DA.{Bernard Day - Chassis Design} | ||