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).
List of modifications and features for the Wraith II engine.
| Identifier | ExFiles\Box 6\6\ 06-page059 | |
| Date | 9th November 1936 | |
| 600 No44 9.11.36. WRAITH II ENGINE. 1. New front arms (cheaper) 2. New rear arms (cheaper) 3. Dynamo Cradle (cheaper) 4. Dynamo Wheelcase facing (stronger) 5. Rear end of crankcase 1" longer (Dismantling G.{Mr Griffiths - Chief Accountant / Mr Gnapp} Box) 6. New controls and facings. 7. Oil pressure filter and 2 stage Relief Valve. -------- | ||