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).
Fitting whitemetal main bearings without liners to a Wraith III No.4 Unit, listing experimental part numbers.
| Identifier | ExFiles\Box 115\3\ scan0220 | |
| Date | 4th January 1938 | |
| Swdl{Len H. Swindell} COPY FOR FILES. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}9/JH.4.1.38. Whitemetal main bearings without liners between the halves were fitted to Wraith III No.4 Unit (27.G.VI). B3 No. 2 The numbers for this job were. EX.28080/1/2/3 Bearings caps. Another set EX.28088/9/90/1/2 Main bearings. B3 No 3 EX.28087 Mod. to top half crankcase. Several more similar sets are being produced in the experimental both in whitemetal and centri cast A.C.6. RM{William Robotham - Chief Engineer}/SWDL.{Len H. Swindell} ---/- | ||