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).
Instructions for fitting valve springs and top washers to Wraith III units.
| Identifier | ExFiles\Box 10\3\ 03-page041 | |
| Date | 9th July 1937 | |
| To HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} 654 Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}7/AP.9.7.37 WRAITH III. VALVE SPRINGS. Will you please fit the following valve springs and top washers to Nos.1 & 2 Wraith III. Units. No.1. and 2 Units. Remove springs and top washers, the former to be handed to Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} Fit Nos.1 - 6 in each unit to Rs.{Sir Henry Royce's Secretary}540 (Swedish wire) Nos. 7 - 12 in each unit to Rs.{Sir Henry Royce's Secretary}540 (S/CV. wire) Existing spring top washers to be removed and replaced by washers to,Rm.{William Robotham - Chief Engineer}400. Springs to be supplied by Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} Unless otherwise stated will you please assemble future units as No.3. unit in respect of springs and washers. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||