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).
Comparative table of crankshaft dimensions for various Rolls-Royce and other engines.
| Identifier | ExFiles\Box 63\4\ scan0077 | |
| Date | 20th June 1929 | |
| DIMENSIONS OF CRANKSHAFTS — R-R.{Sir Henry Royce} & OTHERS. ENGINES (PART NO.): 1. STD. PHANTOM EAC VII (E.78216) 2. SPORTS PHANTOM EAC XIV (E.76826) 3. 1-G-1 (E.18881) 4. STD. 20 H.P. (E.52062) 5. EXPL. STIFFER 20 H.P. (E.81976) 6. LORRAINE DIETRICH. (6 CYL.) (E.6442) 7. INDIA III (PLAST) EXPL. 20 H.P. L&C. 2480 (E.82601) 8. STUTZ 8-CYL. (E.32001) 9. F.{Mr Friese} XI AERO. (E.29667) 10. CHRYSLER "75" (6 CYL.) (No Part No.) 11. EAC 10 S.S. (E.78486) 12. E.78486 WITH LARGER CRANK PINS (E.79381) DATA (in order of engines listed above): NO. OF BEARINGS: 7, 7, 7, 7, 7, 4, 7, 9, 7, 7, 7, 7 JOURNALS: d₁ OUTER DIA.: 2.625", 2.625", 2.000, 2.000, 2.125, 1.890, 2.125, 2.500, 3.000, 2.280, 2.625, 2.625 δ₁ INNER DIA.: 1.500, 1.750, 1.280, 1.250, 1.250, .800, 1.375, 0, (2&6: 2.400", OTHERS: 2.300"), -, 1.500, 1.500 LENGTH OF NO.1.: 1.980, 1.980, 1.675, 1.825, 1.800, 1.960, 1.575, ALL BEARINGS 1-8: 1.850, 1.750 (PROP. END), 2.050, 2.025, 2.025 LENGTHS OF NOS. 2,3,5,&6.: 1.500, 1.500, 1.080, 1.080, 1.000, NOS. 3&5: 2.085, 1.150, ", ", 1.280, 1.650, 1.650 LENGTH OF NO.4: 2.800, 2.800, 1.800, 1.880, 1.800, 3.380, 1.650, ", 1.700, 1.700, 2.625, 2.625 LENGTH OF NO.7: 3.000, 3.000, 1.800, 1.800, 1.750, -, 1.800, NO.9: 2.780, 2.825, -, 3.000, 3.000 CRANKPINS: d₂ OUTER DIA.: 2.125, 1.875, 1.800, 1.800, 1.800, 1.771, 1.800, 2.375, 2.800, 2.000, 2.125, 2.375 δ₂ INNER DIA.: 1.125, 1.125, .875, .750, .750, 0, .875, 0, 1.700, -, 1.125, 1.000 a LENGTH.: 1.880, 2.000, 1.480, 1.800, 1.350, a=1.680 A=4.880, 1.800, 1.400, 2.180, 1.375, 1.880, 1.880 r CRANK RADIUS.: 2.750, 2.750, 2.280, 2.250, 2.250, 2.889, 2.250, 2.250, 2.750, 2.800, 2.750, 2.750 NOSE: OUTER DIA.: 1.750, 1.700, 1.490, 1.400, 1.400, 1.615, 1.562, -, -, -, 1.750, 1.750 INNER DIA.: .750, 1.000, 1.100, .625, .625, 0, 1.000, -, -, -, .750, .750 LENGTH.: 3.200, 2.75, 4.750, 2.500, 2.500, .690, 2.000, -, -, -, 4.180, 4.180 WEBS: TYPE OF WEB.: TAPERING OUTWARDS, OVAL & BEVELLED, TAPERING, PARALLEL, PARALLEL, NAL., OVAL & BEVELLED, OVAL & BEVELLED, PARALLEL. PIN END BEVELLED., OVAL SLIGHTLY BEVELLED, OVAL & BEVELLED, OVAL, NOT BEVELLED MAX. WIDTH. (AT CENTRE): -, -, -, -, -, 2.800, 2.750, 3.380, 3.780, 3.770, 4.000, 4.000 MEAN WIDTH.: 3.000, 3.200, 2.200, 2.200, 2.325, 2.800, 2.750, 3.380, 3.750, 3.850, 3.650, 3.950 DEPTH (AXIALLY): 1.078, 1.000, .730, .790, .890, .768, .730, .650, .950, .680, 1.000, 1.000 Tom. 20/6/29 | ||