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).
Diagram illustrating a fracture on an off-side front engine support following a bump test on an E.A.C.II chassis.
| Identifier | WestWitteringFiles\M\2Jan1925-March1925\ Scan3 | |
| Date | 17th December 1924 | |
| BUMP TEST OF E.A.C.II CHASSIS. CRACK OFF-SIDE FRONT ENGINE SUPPORT (E 71430) FRACTURED AS SHEWN, AFTER 146 HRS. 10 MINS. 17-12-24 | ||