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).
The status of material and tooling instructions for various Wraith III chassis components.
| Identifier | ExFiles\Box 108\2\ scan0012 | |
| Date | 4th February 1938 | |
| To. By & RM.{William Robotham - Chief Engineer}...From RHC.{R. H. Coverley - Production Engineer} Roy{Sir Henry Royce}/Ms. Wld. RHC{R. H. Coverley - Production Engineer}/GAN 600 WRAITH III CHASSIS. With reference to memo By.2/AP.3.2.38., on the question of material not released for the first 100 sets; we have investigated the sections affected and are proceeding with tools and material instructions as follows :- (1) Crankcase & Bearings Crankshafts etc. Material instructions & tooling to proceed, with the exception of the details affected by modifications to rear bearing. (2) Valve Springs. These will not affect tooling or material instructions, remainder of parts on this section should be released. (3) Timing gears & Cam Balancer. The details affected will not interfere with material investigations or tooling. (4) Inlet Pipes, Carburetter Air Silencer & Petrol Drain Pipes. Material investigations & tooling can proceed. (5) Oil Sump Indicator. Material investigation & tooling can proceed. | ||