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).
Modification for an improved rubber mounting and handwritten notes for tests.
| Identifier | ExFiles\Box 30\2\ Scan345 | |
| Date | 9th December 1933 | |
| - 5 - E.4/HP.9.12.33. Modification. P.II. 20/25. ---------------------------------------------------------- (31) Improved rubber mounting for rear end of power unit for cushioning longitudinal vibrations etc. Design required. Design required. Tests on petrol tank vents Bentley brake guard Spherical equalizers | ||