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).
Photographic record of A.C.9. connecting rod bearings after mileage accumulation and test bed hours.
| Identifier | ExFiles\Box 124\2\ scan0355 | |
| Date | 29th August 1941 | |
| 4.B.50. 29th AUGUST, 1941. A.C.9. CON. ROD BEARINGS. 20338 MILES. + 157 HOURS 40 MINS. ON TEST BEDS. ENGINE NO. (B.80. No.1.) | ||