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 engine component modifications and improvements.
| Identifier | ExFiles\Box 82\3\ scan0166 | |
| Date | 2nd April 1935 | |
| -3- Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}/2/KW.2.4.35. (10) 3 exhaust valve stellited. (11) Magnesium intake bend and timing cover. (12) Lightened air silencer. (13) Lightened fan with aluminium blades. (14) Improved SpectreCodename for Phantom III petrol pump with new type fabrics and non-inductively wound coils. HS{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||