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 certain and probable improvements for the Wraith 'C' Series.
| Identifier | ExFiles\Box 108\2\ scan0155 | |
| Date | 16th September 1938 | |
| To By.{R.W. Bailey - Chief Engineer} from Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} c. RHC.{R. H. Coverley - Production Engineer} Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}5/MH.{M. Huckerby}16.9.38. Ihm / ISH WRAITH. 'C' SERIES IMPROVEMENTS. CERTAIN. (1) Carb drain pipes. ECD.895. YES 8.B.V. (2) 36 slot dynamo. } ALREADY ON 8.B.V. (3) 2½ turn regulator. (4) 16 volt instrument illumination. Bump { (5) 8" deflection front springs. YES (6) Front roll rod. YES 25.G.VI. (7) BZ brake linings. NO 29.G.VI. 27.G.VI. (8) RAD.13 servo linings. YES 8.B.V. (9) Water pump SCD.861. YES (10) Adjustable bonnet catches FCD.789. O.K. (11) Tufnol guide bush in petrol pump. YES PROBABLE. 8.B.V. (a) .4 carbon axle tubes. X No cars. (b) Threaded front anchorage rear springs. FCD.645, 73, 286. X (c) Simplified damper fixing FCD.759. X 27.G.VI. (d) Front brake dash pot SCD.805. YES YES? (e) New Lucas wiper. AFM.{Anthony F. Martindale} (f) Felt seals brake toggle shafts. + YES | ||