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 the failure of a front cast iron pressure plate, noting crack locations and measurements.
| Identifier | ExFiles\Box 11\3\ 03-page240 | |
| Date | 18th July 1930 | |
| cracked right through and opened out approx .0312" crack started crack started FRONT C.I. PRESSURE PLATE EX5090 FAILED 18-7-30 11.18. Graham | ||