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).
The application of needle roller bearings to the Spectre Gearbox.
| Identifier | ExFiles\Box 94\1\ scan0077 | |
| Date | 3rd January 1935 | |
| x328 CRY To-DY.{F R Danby} from HDY.{William Hardy} HDY.{William Hardy}5/HP.3.1.35. c. Wor.{Arthur Wormald - General Works Manager} H.{Arthur M. Hanbury - Head Complaints} Hs.{Lord Ernest Hives - Chair} Da.{Bernard Day - Chassis Design} RHC.{R. H. Coverley - Production Engineer} SECRET. HP SpectreCodename for Phantom III Gearbox. N. Sch.4321 herewith shows needle roller bearings applied to the gears constantly in mesh and to the spigot bearing, the object being to reduce the oil drag and facilitate the changing of gear when the box is cold. The layout is made to suit the latest pieces, i.e. N. Sch.4232 for the 1st and 3rd motion shafts and N. Sch. 4320 for the layshaft. N.Sch.4321 herewith. HDY.{William Hardy} | ||