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).
Design position report detailing the status of components for the 20/25 HP, Phantom II, and Spectre models.
| Identifier | ExFiles\Box 30\3\ Scan070 | |
| Date | 21th January 1935 guessed | |
| (2) ITEM. DESIGN POSITION. 20/25 HP. CHASSIS. External float chamber balance pipe to suit existing carburetter. Completed. Auto adjusting tappets. In hand. Ventilated dynamo. Completed. Revised scheme for friction on servo balance arm. In hand. Modified carburetter with revised throttle. In hand. Hypoid axle casing for lower gear ratio. In hand. PHANTOM II TANK ENGINE. Revised water temperature regulator. Completed. Stay for water delivery pipe. Completed. Panel type air cleaner. In hand. SPECTRECodename for Phantom III CHASSIS. Single piston quadruple downdraught carburetter. In hand. External modifications to cylinder head to facilitate enamelling. In hand. | ||