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 reduction in a Phantom III tested on Glasgow's cobblestones, with a proposal for further improvements.
| Identifier | ExFiles\Box 96\3\ scan0133 | |
| Date | 18th November 1936 | |
| S/W Rm{William Robotham - Chief Engineer} Sg.{Arthur F. Sidgreaves - MD} c. to Hs.{Lord Ernest Hives - Chair} c. " E.{Mr Elliott - Chief Engineer} c. " Rm.{William Robotham - Chief Engineer} Cx{Major Len W. Cox - Advertising Manager}8/KW18.11.36. The Phantom III (3-AZ-22) which I took to Glasgow this year showed a very definite improvement in reduction of noise inside the body when running over the cobble-stones of the Glasgow streets. There was not, of course, an entire absence of noise, and strangely enough what there was was definitely more pronounced in the front compartment. Remembering however how very bad 34-EX was last year under those conditions, the improvement was rather more than I had anticipated. We are, as you know, proposing to have the rubber inserted between the springs and the axle on 3-AZ-38, and I hope that as the result of the improvement experienced in that car by the reduction of noise we shall be able to adopt the same procedure with the above car, and still further improve its silent running. Cx.{Major Len W. Cox - Advertising Manager} | ||