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).
Failure of softer dynamo drive rubbers and the plan to revert to the original part.
| Identifier | ExFiles\Box 8\5\ 05-page48 | |
| Date | 10th October 1938 | |
| 67 To By.{R.W. Bailey - Chief Engineer} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} c. RHC.{R. H. Coverley - Production Engineer} c. LA.{L. A. Archer} c. Roy{Sir Henry Royce}/Ws. c. By/CS. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}6/MH.{M. Huckerby}10.10.38. DYNAMO DRIVE RUBBERS. The softer dynamo rubbers (30-35 durometer hardness) provisionally standardised by us in our Standardisation Sheet E.3 have failed on 25.G.VI after 3,000 miles. Similar rubbers also on 8.B.V. (15,000 miles chassis) are also collapsing, therefore we must go back to the original block (E.87011) until a more flexible coupling has been proved to be satisfactory. Schemes being tried are SCB.804 larger dia. of rubbers, also a proprietary coupling from The Manganese Bronze Co. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||