The Wraith II Clutch, detailing the starter ring being made solid with the flywheel from high carbon steel.
| Identifier | ExFiles\Box 8\1\ 01-page33 | |
| Date | 11th February 1937 | |
| TOTT. 612. SECRET. Lt SMITH By. {R.W. Bailey - Chief Engineer} C. E. {Mr Elliott - Chief Engineer} DR. Rm. {William Robotham - Chief Engineer} HFB. E {Mr Elliott - Chief Engineer} /HDY. {William Hardy} 3/HP.11.2.37. Wraith II Clutch. We send herewith N.Sch.5040 showing the starter ring solid with the flywheel, both now being of high carbon steel as for the 25/30. E {Mr Elliott - Chief Engineer} /HDY. {William Hardy} | ||
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).