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 effects of softening car suspension on roadability and controllability.
| Identifier | ExFiles\Box 88\1\ scan0197 | |
| Date | 23th July 1935 | |
| Rm{William Robotham - Chief Engineer} / 23 / 7 / 35 - X rol Mr Geoffrey Boston CX{Major Len W. Cox - Advertising Manager}11/KW 22.7.35 Replying to CX{Major Len W. Cox - Advertising Manager}11/KW 22/7/35: If the suspension of a car is softened the roadability or controllability suffers and this cannot be restored by merely increasing the shock absorber load. As an example, fit a Continental with low rating springs + it will not be as directionally stable, even if the shock absorber control is kept in the max position, as it would be with its own stiff springs. The SpectreCodename for Phantom III demonstrates that by completely re designing the car with X frame and cross members, low rating springs can be made more palatable to the speed merchant. We do not yet know how to achieve this result on the Bentley without increasing the danger of front axle tramp but are working on the problem. Rm{William Robotham - Chief Engineer} | ||