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).
Inspection report detailing the condition and failure of big end bearings and other engine components.
| Identifier | ExFiles\Box 114\2\ scan0221 | |
| Date | 22th November 1935 | |
| -2- Hs{Lord Ernest Hives - Chair}/Smth.S/KW.22.11.35. BIG END BEARINGS. TABLE DATA: Row: Top Half No.1: Intact but showing incipient peeling No.2: As No.1 T.H. No.3: As No.1 T.H. No.4: This brg. failed. Very little brg. metal left No.5: Good, but showing incipient peeling No.6: As No.1 T.H. Row: Cap No.1: As above but with small piece broken away No.2: Good but with slight pitting No.3: As No.1 Cap No.4: - No.5: Good No.6: Good The failure of No.4 big end was most probably due to loss of oil following partial failure of Nos. 4 & 5 main bearings. Crankshaft. No.4 crank pin was badly grooved and the shaft is scrap. Crankcase. The was chalk tested and found to be free from cracks. Pistons. In good condition. Valve Gear. The outer rim of No.2 inlet valve spring top washer had sheared off over most of the circumference (see accompanying photograph). The rollers of Nos. 1 & 8 bottom tappets were pitted slightly. The valve gear was otherwise in good condition. Hs{Lord Ernest Hives - Chair}/F.Ll.Smith. | ||