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).
Test report on connecting rod bearings and crankpin dimensions after a mileage test.
| Identifier | ExFiles\Box 91\2\ scan0398 | |
| Date | 31th August 1937 | |
| UNIT No PII No 13 2 PASSED TO TEST :- 7-5-37 COMPLETED TEST :- 31-8-37 CONN: ROD BEARINGS & CRANKPIN DIMENSIONS CONN: ROD BEARINGS :- STD PRODN RUNNING TIME :- MATL :- WM/T MILEAGE :- 16355. CRANKSHAFT :- E 88803 MATL :- V.C.M. TEST PIECE No :- X.V. 6136 TABLE DATA: HEADER: No, POSITION, BEARINGS (BEFORE, AFTER, WEAR), CRANKPIN (BEFORE, AFTER, WEAR), CLEARANCE (BEFORE, AFTER, WEAR) ROW 1: 1, A-A, B-B, OVALITY. CRANKPIN - BEFORE: 2.248, ", - | AFTER: 2.248, 2.248, NIL | WEAR: NIL, NIL, - ROW 2: 2, A-A, B-B, OVALITY. CRANKPIN - BEFORE: ", ", - | AFTER: 2.2478, 2.2479, .0001 | WEAR: .0002, .0001, - ROW 3: 3, A-A, B-B, OVALITY. BEARINGS: Unmeasureable. CRANKPIN - BEFORE: ", ", - | AFTER: 2.2478, 2.2350, .0128 | WEAR: .0002, .013 X, - ROW 4: 4, A-A, B-B, OVALITY. CRANKPIN - BEFORE: ", ", - | AFTER: 2.2478, 2.248, .0002 | WEAR: .0002, NIL, - ROW 5: 5, A-A, B-B, OVALITY. CRANKPIN - BEFORE: ", ", - | AFTER: 2.2478, 2.2479, .0001 | WEAR: .0002, .0001, - ROW 6: 6, A-A, B-B, OVALITY. CRANKPIN - BEFORE: ", ", - | AFTER: 2.2478, 2.2478, NIL | WEAR: .0002, .0002, - FOOTNOTE: X DAMAGED BY BEARING FAILURE GAUGE SIZE :- Ex I 217 | ||