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).
All-helical gearbox for the Spectre, referencing schematics for the actuating mechanism and casing.
| Identifier | ExFiles\Box 94\1\ scan0008 | |
| Date | 26th May 1934 | |
| X328 To BY.{R.W. Bailey - Chief Engineer} from HDY.{William Hardy} HDY.{William Hardy}1/HP.26.5.34. C.c. Mr. W.E. Hs.{Lord Ernest Hives - Chair} Ba. RuH. All Helical Gearbox for SpectreCodename for Phantom III. We send herewith N. Sch's 4050/1/2 and 4059/60 which shew the actuating mechanism and casing for this box. Particulars of the speedometer drive and level stick will follow in a day or two. HDY.{William Hardy} | ||