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 design modifications and their completion status for the Phantom III and Wraith II chassis.
| Identifier | ExFiles\Box 161a\4\ scan0049 | |
| Date | 24th March 1936 | |
| (sheet 2) DESIGN POSITION. ITEM. Phantom III Chassis - Continued. Modified recommendations to coachbuilders. In hand. Modification to distributor rotor and blade. Completed. Oil hole in connecting rod for cylinder lubrication. Completed 21.3.36. Mod. to standard cylinder head to improve clearance with "C" steering column. Completed 20.3.36. Modified hot box for exhaust heated riser. In hand. Mod. to 4 port cylinder head to improve clearance with "C" steering column. Completed 20.3.36. Modified water pipes to hot box to improve appearance. Completed 24.3.36. Improved engine breather pipe. In hand. Modified marine type connecting rod for Hall's metal bearings. In hand. Rubber mounting of thermometer bulb in cylinder head. In hand. Breather pipe from rocker cover to air silencer. In hand. Floatchamber vent to air silencer. In hand. Solenoid operated starter motor. In hand. WRAITH II CHASSIS. Front wheel and brake drum. In hand. Front brake mechanism. In hand. Steering column - Marles type. In hand. | ||