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 improvements and modifications to various components.
| Identifier | ExFiles\Box 1\8\ B001_X100 Engine Chassis-page142 | |
| Date | 29th December 1932 | |
| - 4 - E.1/HP.29.12.32. Improved Petrol Pipe - 1. Improved Road Wing Fixing - 25. Slower Speed Fan Drive - 24. Exhaust silencer - 5. Starter Motor Armature D.100427. Improved Instrument Patch to instructions By/RD.2/W.22.11.32. | ||