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).
Confirming a change in the hardness specification for silentbloc body mountings.
| Identifier | ExFiles\Box 117\1\ scan0324 | |
| Date | 20th March 1939 | |
| 1021 To By.{R.W. Bailey - Chief Engineer} c. to Da{Bernard Day - Chassis Design}/JD.{J. Draper - Frames} c. to By/HEB.{H. Biraben} c. to Roy{Sir Henry Royce}/Les.{Ivan A. Leslie} Rm{William Robotham - Chief Engineer}/FD.{Frank Dodd - Bodies}14/JH.20.3.39. We have had a letter from silentbloc stating that the present silentbloc body mountings are of 51 - 55 hardness, we were under the impression that these were 60 when we recommended increasing the figure to 65 - 70. In view of the information and tests carried out at Derby, will you please have all future orders of body mountings made to 60 - 65. Rm{William Robotham - Chief Engineer}/FD.{Frank Dodd - Bodies} | ||