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).
Two graphs comparing damping force against speed for different suspension control methods.
| Identifier | ExFiles\Box 179b\1\ img206 | |
| Date | 6th December 1932 guessed | |
| DAMPING LBS MINIMUM DAMPING AS SET ON DAMPER HAND CONTROL METHOD 2 GOVERNOR ONLY DAMPING LBS METHOD 3 M.P.H. SHADING SHOWS RANGE OF DAMPING | ||