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).
Photograph of big end bearings from a B22 engine after a 15,000-mile test, showing a failure in bearing number 6.
| Identifier | ExFiles\Box 97\1\ scan0033 | |
| Date | 27th November 1936 guessed | |
| UPPER HALVES ← 1 TO 6 → 12 BIG END BEARINGS OUT OF B22 in 6 BIV. 15,000 MILES TEST IN FRANCE. STANDARD HALL'S METAL AC7 WITH STEEL LINER: AND AC7 FACINGS. No.6 BIG END FAILURE. 7,500 MILES ON FRENCH TEST. 3,284 MILES OTHER RUNNING ON CONTINENT. | ||