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).
Noise originating from the front expansion box of the 33-EX exhaust system.
| Identifier | ExFiles\Box 93\1\ scan0094 | |
| Date | 23th March 1937 | |
| 323, To Hs.{Lord Ernest Hives - Chair} c. to Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} Rm{William Robotham - Chief Engineer}/Whym.9/JH.23.3.37. 33-EX Exhaust System. The noise in this exhaust system is all coming from the front expansion box. This box is not lagged because it is only a temporary fitting until the cars own expansion box comes back from "Aluminizing". Rm{William Robotham - Chief Engineer}/G.H.Whyman. | ||