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).
Modified water pump drive coupling for the Phantom III model to address service failures.
| Identifier | ExFiles\Box 149a\1\ scan0208 | |
| Date | 1st April 1939 | |
| DY{F R Danby}/NS.{Norman Scott} c. Rm{William Robotham - Chief Engineer}/Std. 1269. DA.{Bernard Day - Chassis Design}6/G.1.4.39. PHANTOM 111. WATER PUMP DRIVE. Please receive E.CD.586 modified pump drive coupling to increase the flexibility, particularly to parallel out-of-alignment. The driving couplings on both dynamo and water pump are unaltered, the spring plates are Wraith 111 pieces, and the only new detail in the central connecting piece. Details are urgently required for test, as there have been several failures in service. DA.{Bernard Day - Chassis Design} | ||