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' brake differentials of the swinging arm type and a related scheme diagram.
| Identifier | ExFiles\Box 92\4\ scan0003 | |
| Date | 14th May 1934 | |
| X6641 306 To BY.{R.W. Bailey - Chief Engineer} from Da.{Bernard Day - Chassis Design} Da.{Bernard Day - Chassis Design}1/HP.14.5.34. c. for Mr Hs.{Lord Ernest Hives - Chair} Mdm. MHU. SpectreCodename for Phantom III - Brake Differentials. --------------------------- Herewith is N. Sch.4046, shewing the brake differentials of the swinging arm type, and connections carried on the rear axle. Da.{Bernard Day - Chassis Design} | ||