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 wear and damage to piston rings and bands.
| Identifier | ExFiles\Box 11\4\ 04-page079 | |
| Date | 1st July 1932 | |
| 1.9EX C/7/32 This stop cannot be seen in this view holes out through under piston ring bands two top rings seized The stop holes have become enlarged and pieces broken off have bored their way under the bands of the ring support | ||