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 detailing cylinder bore dimensions and wear for 'B' side liners of unit Phantom III No 13.
| Identifier | ExFiles\Box 91\2\ scan0403 | |
| Date | 10th September 1937 | |
| P.III UNIT Nº 13 PASSED TO TEST:- 7-5-37 COMPLETED TEST:- 10-9-37 B' SIDE CYLINDER BORE DIMENSIONS CYLINDER LINERS E 88683 RUNNING TIME:- — MATL:- Sheepbridge Centricast MILEAGE:- 17,110 [Diagram of cylinder bore cross-section] MEASUREMENTS AT CROWN REPRESENT MAX: WEAR AT TOP OF STROKE [Diagram of cylinder profile with dimensions 6.137, .350, .500] CROWN, CENTRE, GLAND, MOUTH TABLE OF MEASUREMENTS: BORE Nº | CROWN | CENTRE | GLAND | MOUTH | BEFORE | AFTER | WEAR | BEFORE | AFTER | WEAR | BEFORE | AFTER | WEAR | BEFORE | AFTER | WEAR 1 A-A | 3.2509 | 3.2517 | .0008 | 3.2516 | 3.2522 | .0006 | 3.2510 | 3.2489 | -.0021 | 3.2514 | 3.2502 | -.0012 B-B | 3.2505 | 3.2498 | -.0007 | 3.2506 | 3.2500 | -.0006 | 3.2512 | 3.2520 | .0008 OVALITY | .0004 | .0019 | | .001 | .0022 | | .0002 | .0031 2 A-A | 3.2510 | 3.2510 | NIL | 3.2515 | 3.2520 | .0005 | 3.2508 | 3.2512 | .0004 | 3.2507 | 3.2511 | .0004 B-B | 3.2505 | 3.2496 | -.0009 | 3.2514 | 3.2512 | -.0002 | 3.2520 | 3.2510 | -.001 OVALITY | .0005 | .0014 | | .0001 | .0008 | | .0012 | .0002 3 A-A | 3.2512 | 3.2514 | .0002 | 3.2520 | 3.2518 | -.0002 | 3.2518 | 3.2513 | -.0005 | 3.2519 | 3.2510 | -.0009 B-B | 3.2509 | 3.2497 | -.0012 | 3.2517 | 3.2520 | .0003 | 3.2524 | 3.2518 | -.0006 OVALITY | .0003 | .0017 | | .0003 | .0002 | | .0006 | .0005 4 A-A | 3.2510 | 3.2516 | .0006 | 3.2513 | 3.2516 | .0003 | 3.2513 | 3.2505 | -.0008 | 3.2515 | 3.2509 | -.0006 B-B | 3.2506 | 3.2496 | -.001 | 3.2510 | 3.2506 | -.0004 | 3.2518 | 3.2510 | -.0008 OVALITY | .0004 | .002 | | .0003 | .001 | | .0005 | .0005 5 A-A | 3.2512 | 3.2510 | -.0002 | 3.2519 | 3.2514 | -.0005 | 3.2519 | 3.2492 | -.0027 | 3.2520 | 3.2510 | -.001 B-B | 3.2507 | 3.2502 | -.0005 | 3.2510 | 3.2500 | -.001 | 3.2520 | 3.2492 | -.0028 OVALITY | .0005 | .0008 | | .0009 | .0014 | | .0001 | NIL 6 A-A | 3.2510 | 3.2505 | -.0005 | 3.2515 | 3.2519 | .0004 | 3.2512 | 3.2506 | -.0006 | 3.2513 | 3.2512 | -.0001 B-B | 3.2505 | 3.2502 | -.0003 | 3.2510 | 3.2507 | -.0003 | 3.2516 | 3.2510 | -.0006 OVALITY | .0005 | .0003 | | .0005 | .0012 | | .0004 | .0004 EXI 216 SHEET 2. | ||