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).
Troubles with the rubber coupled Wraith Dynamo Drive and the lack of a satisfactory solution.
| Identifier | ExFiles\Box 168a\3\ img392 | |
| Date | 22th May 1937 | |
| To-Hive o.{Mr Oldham} to Rm.{William Robotham - Chief Engineer} [REDACTED] WSC{W. S. Cassel} 6142. Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux}10/JH.22.5.37. Wraith Dyanamo Drive. The rubber coupled drive is similar to the present Bentley, 25/30 H.P. and Phantom. In service this drive has given trouble due to the scrubbing action of the rubber. This has been reported but no satisfactory reply to over come the complaint has come forth. Rm{William Robotham - Chief Engineer}/G.W.Hancock. | ||