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).
Noisy Wraith dynamo drives, noting the fitting of larger rubber blocks and a design concern regarding alignment.
| Identifier | ExFiles\Box 131\4\ scan0244 | |
| Date | 27th May 1937 | |
| 1113 To Rm.{William Robotham - Chief Engineer} Kingsbury May 27th.1937. WRAITH DYNAMO DRIVE Swindall has informed me that the latter couplings have been fitted with larger and harder rubber blocks. There have been a lot of service complaints of the scrubbing action which has taken place making the dynamo drive noisy. We are keeping an eye on the latest production to see whether any improvement has been made but in our opinion the design relies too much on the perfect alignment of the drive. I called E's. attention to this for the Wraith to prevent if possible, further trouble. I am returning your memo as I have received a copy. Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} | ||