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 suggested cost-saving alterations for the Wraith III Damper Governor Control Unit.
| Identifier | ExFiles\Box 148\5\ scan0155 | |
| Date | 23th March 1937 | |
| SECRET. 1260. BY.{R.W. Bailey - Chief Engineer} C. E.{Mr Elliott - Chief Engineer} Da.{Bernard Day - Chassis Design} WS. Rm.{William Robotham - Chief Engineer} HPS.{Horace Percy Smith - Experimental Factory Mgr} E/HDY.{William Hardy}1/HP.23.3.37. Wraith III. Damper Governor Control Unit. The following suggestions have been made by Ws/WHF to reduce cost in the manufacture of the above unit. Piece No. Name of Part. Alteration. E.20937. Collar. Delete black enamel finish. E.39588. Plug. Make of S/M instead of brass. Make from hexagon bar. F.54292. Cst.Head Screw. Delete black matt eggshell finish. F.84563/4. Bearing Pin. Make from .1875 dia.bar without machining. F.84629/33. Washers. Make of AL.instead of BZ. F.84997. Guide for Plunger. Make from hexagon bar as shewn on N.Sch.5096 herewith. F.85632. Plug. Make of S/M instead of BZ/PD. F.87392. Valve Body. Make from hexagon bar as shewn on N.Sch.5096 herewith. F.87822. Filter Body. Revise construction as shewn by N.Sch.5092 herewith. FW.722. Release Valve Seat. Make from hexagon bar. | ||