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).
Blueprint of a front C.I. pressure plate showing crack formations after failure.
| Identifier | ExFiles\Box 13\7\ 07-page050 | |
| Date | 29th July 1930 | |
| BROKEN RIGHT THROUGH AND OPENED OUT .0315" CRACK STARTED CRACK STARTED FRONT C.I. PRESSURE PLATE Ex 2072 FAILED AT 1/2 HR ROLLS-ROYCE. LTD DERBY PRINT ROOM 29 JUL 1930 DERBY | ||