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).
The condition of cylinders, detailing bore dimensions, ovality, and wear measurements.
| Identifier | ExFiles\Box 146\1\ scan0212 | |
| Date | 15th March 1938 | |
| REPORT UPON CONDITION OF CYLINDERS CHASSIS N° 3-AZ-20 F.B.A. DATE 15/3/38 MILEAGE 32645 MILES JOB N° 37720 'B' Side 1ST GRIND OUT ORIGINAL BORES yes. CYLINDER BORE DIMENSIONS NOTE DIM'S "AA{D. Abbot-Anderson}" TAKEN AT RT ANGLES TO C' SHAFT. DIM'S "BB" TAKEN PARALLEL TO C' SHAFT. Measurements taken just below the LIP TABLE DATA: N° CYLINDER | MOUTH (AA{D. Abbot-Anderson}, BB, OVALITY, WEAR) | CENTRE (AA{D. Abbot-Anderson}, BB, OVALITY, WEAR) | CROWN (AA{D. Abbot-Anderson}, BB, OVALITY, WEAR) 1: NEW 3.250 | .250, .250, NIL, NIL | .25175, .249., .00275, .00175 | .25325, .2535, .00025, .0035 2: NEW 3.2505 | .25175, .2515, .00025, .00125 | .25225, .251, .00125, .00175 | .25375, .2515, .0025, .00325 3: NEW 3.2505 | .2515, .251, .0005, .001 | .2515, .251, .0005, .001 | .253, .254, .001, .0035 4: NEW 3.2505 | .25075, .25075, NIL, .00025 | .252, .251, .001, .0015 | .253, .25325, .00025, .00275 5: NEW 3.250 | .2505, .250, .0005, .0005 | .252, .250, .002, .002. | .252, .2525, .0005, .0025 6: NEW 3.250 | .2515, .250, .0015, .0015 | .253, .248, .005, .003. | .254, .2505, .0035, .004 FOOTER NOTES: Cylinder Bore Sizes as Record Cards 'B' Side 1: S, 2: + 1/2, 3: + 1/2, 4: + 1/2, 5: S, 6: S. | ||