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).
Hand-drawn diagram illustrating the specifications for a front engine mounting.
| Identifier | ExFiles\Box 126\2\ scan0151 | |
| Date | 18th November 1938 guessed | |
| FRONT ENGINE MOUNTING 55226 4 5/16" PRESSING 1/8" THICK 5 3/8" 2 1/2" DIA PAD 2 1/2" DIA 1/8" THICK 4" CHFR. 1/16 AT 45° 7/16" VIEW IN DIRECTION OF ARROW | ||