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).
Table of measurements showing cylinder wear on a Bentley 6-unit block after endurance testing.
| Identifier | ExFiles\Box 3\6\ 06-page280 | |
| Date | 6th October 1924 | |
| BENTLEY 6. UNIT CYLINDERS. SHOWING WEAR AFTER 100 HRS ENDURANCE AND 100 HRS GENERAL RUNNING CYL. BLOCK E55728 TABLE OF MEASUREMENTS: Headers: North, Centre, Crown Sub-headers: 1A, 1B, 1C, 1D (North), 2A, 2B, 2C, 2D (Centre), 3A, 3B, 3C, 3D (Crown) Cylinder 1: When Measured 9.10.24: 3.7505, 3.7505, 3.7504, 3.7504, 3.7512, 3.7515, 3.7518, 3.7514, 3.751, 3.751, 3.751, 3.7512 When Measured 16.12.24: 3.7508, 3.7508, 3.7495, 3.7507, 3.7521, 3.7521, 3.7521, 3.7520, 3.7515, 3.7515, 3.7515, 3.7516 WEAR: .0003, .0003, -.0009, .0003, .0009, .0006, .0003, .0006, .0005, .0005, .0005, .0004 Cylinder 2: Row 1: 3.7506, 3.7506, 3.7506, 3.7502, 3.751, 3.7519, 3.7515, 3.7513, 3.7513, 3.751, 3.7513, 3.7512 Row 2: 3.7508, 3.7508, 3.7508, 3.751, 3.7515, 3.7518, 3.7518, 3.7517, 3.752, 3.7517, 3.7517, 3.7515 WEAR: .0002, .0002, .0002, .0008, .0005, -.0001, .0003, .0004, .0007, .0006, .0004, .0003 Cylinder 3: Row 1: 3.7503, 3.7503, 3.7503, 3.7508, 3.7508, 3.7513, 3.7508, 3.751, 3.7518, 3.751, 3.7513, 3.7508 Row 2: 3.7508, 3.7508, 3.7508, 3.7506, 3.7515, 3.7518, 3.7514, 3.7516, 3.7516, 3.7517, 3.7517, 3.7516 WEAR: .0005, .0005, .0005, -.0002, .0007, .0005, .0006, .0006, -.0002, .0007, .0004, .0008 Cylinder 4: Row 1: 3.7505, 3.7512, 3.7502, 3.7498, 3.7507, 3.7518, 3.7515, 3.7515, 3.7515, 3.7515, 3.7513, 3.7513 Row 2: 3.751, 3.7512, 3.7507, 3.7507, 3.7517, 3.7522, 3.7511, 3.7518, 3.7517, 3.7517, 3.7514, 3.7517 WEAR: .0005, .0000, .0005, .0009, .0010, .0004, -.0004, .0003, .0002, .0002, .0001, .0004 Cylinder 5: Row 1: 3.7502, 3.7502, 3.7502, 3.7498, 3.7508, 3.751, 3.7504, 3.7502, 3.751, 3.751, 3.751, 3.7514 Row 2: 3.7505, 3.7505, 3.7506, 3.7506, 3.7512, 3.7516, 3.7515, 3.7515, 3.7515, 3.7514, 3.7515, 3.7515 WEAR: .0003, .0003, .0004, .0008, .0004, .0006, .0011, .0013, .0005, .0003, .0004, .0001 Cylinder 6: Row 1: 3.7498, 3.7508, 3.7504, 3.7504, 3.7513, 3.7504, 3.7504, 3.7512, 3.7506, 3.751, 3.751, 3.7505 Row 2: 3.7508, 3.7507, 3.7507, 3.7507, 3.7515, 3.7517, 3.7517, 3.7517, 3.7512, 3.7512, 3.7512, 3.7513 WEAR: .0010, -.0001, .0003, .0003, .0002, .0013, .0013, .0005, .0006, .0002, .0001, .0008 NOTES & DIAGRAMS: Note below table: DIMENSIONS TAKEN AT FOUR POINTS RADIALLY Vertical diagram labels: CROWN, CENTRE, MOUTH. Dimensions: 1.000", 5.125", 1.000" Circular diagram labels: N, IB, E, IS, S, OS, W, OB Note below diagram: VIEW LOOKING IN DIRECTION OF ARROW | ||