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).
Table of proposed vehicle modifications with associated cost and implementation remarks.
| Identifier | ExFiles\Box 161a\2\ scan0233 | |
| Date | 23th May 1938 guessed | |
| -2- DESCRIPTION. Suction Oil Filter - Slight mods necessary to clear side steering tube used with Wraith wheel movement. ECD.628. O.S. Exhaust Downtake - Pipe required to clear S.S.Tube used with Wraith wheel movement. Wraith Steering Box - used in conjunction with Wraith wheel movement. Modified Controls - to suit Wraith steering. Wraith Type Tappets - and Camshaft to suit. REMARKS. Tool cost and Factory cost not appreciably affected by these modifications. Chassis Factory cost not greatly affected. Tool cost approx £15.0.0d. for new bracket required. Cost etc included on item (15) Wraith wheel movement. New geometry of control levers etc., Should eliminate present tappet troubles, but scheme has not yet run on an engine. Saving per chassis over present design approx £10.10.0d. Tool cost £160.0.0d.(Dies, Master cam formers, etc., recovered after 15 chassis. Introduced at 1 in E.Series with negligible scrap. AGREED | ||