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).
The design and fitment of new aluminium drums for the Bentley III Continental model to save weight.
| Identifier | ExFiles\Box 120\1\ scan0270 | |
| Date | 1st November 1938 | |
| 1028 To Da.{Bernard Day - Chassis Design} c. to By.{R.W. Bailey - Chief Engineer} Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale}10/JH.1.11.38. BENTLEY III ALUMINIUM DRUMS. We understand that the administration have given per- mission to fit aluminium drums to the Continental Bentley to save weight. Our present iron drums are 12 1/4" internal dia. The original aluminium drums were different widths front and rear and are obsolete. We need a design for shoes and drum to replace our latest designs and be interchangeable with them. As regards the drum, all we need is an outline drawing of it because High Duty Alloys are going to do the development work, the proportions of liner and drum do not concern us. We suppose we shall need different drums for the fully floating and semi floating axles, as usual. Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale} | ||