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).
On modifications to the Spectre hand brake linkage to reduce leverage and improve geometry.
| Identifier | ExFiles\Box 92\4\ scan0094 | |
| Date | 24th September 1935 | |
| [Handwritten signature: R Gry{Shadwell Grylls}] X306 [Struck through: BT.{Capt. J. S. Burt - Engineer}] [Struck through: c.c.E.Hs.{Lord Ernest Hives - Chair}RHC.{R. H. Coverley - Production Engineer}Hdy.{William Hardy}] Da.{Bernard Day - Chassis Design}1/HP.24.9.35. SECRET. SpectreCodename for Phantom III - Hand Brake Linkage. Herewith is N.Sch.4639 which shews the modification to the hand brake levers to reduce the overall leverage from 80 to 60 to 1. By reducing the lever lengths on the countershaft there is a slight improvement in the geometry, which, as shewn on the diagram is now practically perfect. Da.{Bernard Day - Chassis Design} | ||