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).
Cylinder bore dimension and wear measurement sheet for Phantom III Unit No 13, 'A' Side.
| Identifier | ExFiles\Box 91\2\ scan0402 | |
| Date | 10th September 1937 | |
| P.III UNIT Nº 13 A' SIDE CYLINDER BORE DIMENSIONS PASSED TO TEST:- 7-5-37. COMPLETED TEST:- 10-9-37. 4 CYLINDER LINERS E 88683 MATL :- SHEEPBRIDGE CENTRICAST RUNNING TIME :- — MILEAGE :- 17,110. Diagram dimensions: 6.137, .350, .500 MEASUREMENTS AT CROWN REPRESENT MAX: WEAR AT TOP OF STROKE CROWN CENTRE GLAND MOUTH BORE Nº | CROWN | CENTRE | GLAND | MOUTH | BEFORE | AFTER | WEAR | BEFORE | AFTER | WEAR | BEFORE | AFTER | WEAR | BEFORE | AFTER | WEAR 1 A-A | 3.2505 | 3.2512 | .0007 | 3.2510 | 3.2516 | .0006 | 3.2516 | 3.2498 | -.0018 | 3.2525 | 3.2512 | -.0013 B-B | 3.2505 | 3.2489 | -.0016 | 3.2505 | 3.2505 | NIL | 3.2515 | 3.2530 | .0015 | OVALITY | NIL | .0023 | | .0005 | .0011 | | .0001 | .0032 | | 2 A-A | 3.2505 | 3.2505 | NIL | 3.2506 | 3.2510 | .0004 | 3.2505 | 3.2500 | -.0005 | 3.2510 | 3.2502 | -.0008 B-B | 3.2505 | 3.2491 | -.0014 | 3.2510 | 3.2510 | NIL | 3.2515 | 3.2514 | -.0001 | OVALITY | NIL | .0014 | | .0004 | NIL | | .001 | .0014 | | 3 A-A | 3.2510 | 3.2517 | .0007 | 3.2514 | 3.2512 | -.0002 | 3.2515 | 3.2510 | -.0005 | 3.2515 | 3.2511 | -.0004 B-B | 3.2509 | 3.2495 | -.0014 | 3.2515 | 3.2519 | .0004 | 3.2520 | 3.2519 | -.0001 | OVALITY | .0001 | .0022 | | .0001 | .0007 | | .0005 | .0009 | | 4 A-A | 3.2507 | 3.2516 | .0009 | 3.2510 | 3.2516 | .0006 | 3.2510 | 3.2501 | -.0009 | 3.2510 | 3.2504 | -.0006 B-B | 3.2508 | 3.2495 | -.0013 | 3.2512 | 3.2510 | -.0002 | 3.2516 | 3.2514 | -.0002 | OVALITY | .0001 | .0021 | | .0002 | .0006 | | .0006 | .0013 | | 5 A-A | 3.2510 | 3.2515 | .0005 | 3.2514 | 3.2521 | .0007 | 3.2512 | 3.2500 | -.0012 | 3.2515 | 3.2504 | -.0011 B-B | 3.2509 | 3.2492 | -.0017 | 3.2510 | 3.2507 | -.0003 | 3.2515 | 3.2520 | .0005 | OVALITY | .0001 | .0023 | | .0004 | .0014 | | .0003 | .002 | | 6 A-A | 3.2510 | 3.2518 | .0008 | 3.2515 | 3.2524 | .0009 | 3.2518 | 3.2512 | -.0006 | 3.2519 | 3.2514 | -.0005 B-B | 3.2507 | 3.2508 | .0001 | 3.2510 | 3.2507 | -.0003 | 3.2520 | 3.2516 | -.0004 | OVALITY | .0003 | .001 | | .0005 | .0017 | | .0002 | .0004 | | EX1 216 SHEET 1. | ||