Modification to the first speed selector lever on the Wraith II Gearbox.
| Identifier | ExFiles\Box 8\11\ 11-page057 | |
| Date | 21th January 1937 | |
| 628 1044 HY {Tom Haldenby - Plant Engineer} : [text crossed out] c.c. E. {Mr Elliott - Chief Engineer} Da. {Bernard Day - Chassis Design} Rm. {William Robotham - Chief Engineer} HPS. {Horace Percy Smith - Experimental Factory Mgr} [text crossed out] SECRET. E {Mr Elliott - Chief Engineer} /HDY. {William Hardy} 1/HP.21.1.37. Wraith II Gearbox. We send herewith N.Sch.5012 showing a modification to the first speed selector lever to permit the use of a cutter of larger diameter when profile milling the jaw, as suggested by HPS. {Horace Percy Smith - Experimental Factory Mgr} N.Sch.5 012 herewith. E {Mr Elliott - Chief Engineer} /HDY. {William Hardy} | ||
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).