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).
Development programme for the Spectre suspension, covering tyres, steering, and dampers.
| Identifier | ExFiles\Box 95\3\ scan0029 | |
| Date | 7th September 1934 guessed | |
| X407T 346 SpectreCodename for Phantom III Suspension Programme. Tyre Sizes. (a) 7.00" section for SpectreCodename for Phantom III (b) 7.50" " " Ph.II (c) 7.50" " " 27-EX Steering Boxes. (a) Left hand Ph.II in Cadillac. (b) Cadillac on SpectreCodename for Phantom III. (c) SpectreCodename for Phantom III steering with very low ratio similar to Cadillac. 27-EX. (a) Three-piece cross steering tube. (b) Increased wheel movement. Shock Dampers. (a) Test rig for W. Bell. (b) Link mechanism whereby damper loads can be checked on chassis with road springs removed (c) Order various SpectreCodename for Phantom III damper control bellows, using No. 2, No. 4, and No. 6 size bellows. Steering Frictions - Cross Steering Tube. (a) Each joint of SpectreCodename for Phantom III. (b) Each joint of Cadillac. (c) Each joint of Ph.II. | ||