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 No.2 and No.5 big end bearings, made from A.C.2 and A.C.4 alloys, showing their condition after a timed engine test.
| Identifier | ExFiles\Box 115\1\ scan0200 | |
| Date | 27th November 1936 guessed | |
| B.17. No.2 BIG END BEARING A.C.2 Alloy No.5 BIG END BEARING A.C.4 Alloy RUNNING TIME:- 24 Hrs.30 mins.light 1 Hr. 30 mins.full load 2 Hrs. 5 mins. 1/4 load 4000-4500 R.P.M. OTHERWISE STANDARD ENGINE. | ||