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 showing cracking on an aluminium bronze spring box after testing.
| Identifier | ExFiles\Box 119\2\ scan0418 | |
| Date | 7th November 1935 | |
| SPRING BOX G81515 ) 450 HRS 2" CAMS ALUM. BRONZE) 22 HRS 45 MINS. 3" CAMS 7.11.35. | ||