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).
Instruction to incorporate modification ECD.924 for Vandervell main bearings on specific units to prevent oil leakage.
| Identifier | ExFiles\Box 115\3\ scan0293 | |
| Date | 5th October 1938 | |
| 1020 To HPS.{Horace Percy Smith - Experimental Factory Mgr} Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}18/JH.5.10.38. Vandervell Main Bearings. Will you please incorporate the modification ECD.924 to the new units which we have instructed to be fitted with Vandervell main bearings. (1) Wraith III No.10 unit, our specification Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}14/JH. 17.6.38. (2) B.III No.6 unit, our specification Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}3/R.23.8.38. The object of the above mod. ECD.924 is to lengthen the oil retaining thread and so increase its efficiency with regard to preventing oil leaking into the clutch pit. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||