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 Spectre's RR type front brakes with tangent screw adjustment, referencing an associated schematic.
| Identifier | ExFiles\Box 92\4\ scan0068 | |
| Date | 20th February 1935 | |
| SECRET +306 R GBY To BY.{R.W. Bailey - Chief Engineer} from Da.{Bernard Day - Chassis Design} c. Wer. E.{Mr Elliott - Chief Engineer} Hs.{Lord Ernest Hives - Chair} Hsy. RUS. Da.{Bernard Day - Chassis Design}3/HP.20.2.35. SpectreCodename for Phantom III - RR. type Front Brakes with Tangent screw adjustment. Herewith is N. Sch.4380 showing the front brake equaliser and linkage to suit the above system of brakes. N.Sch.4380 herewith. Da.{Bernard Day - Chassis Design} | ||