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).
Technical table detailing the specifications of various car crankshafts.
| Identifier | ExFiles\Box 6\1\ 01-page163 | |
| Date | 3rd May 1936 | |
| R.R. CAR CRANKSHAFTS. SECTION: 20 H.P. PART NO. | DESCRIPTION | TYPE OF REAR HUB DRIVE | SPRING DRIVE | WEB(S) SHAPE & WHETHER DRILLED | SPECIAL FITTING INSTRUCTIONS | JOURNAL DIA OUTER INNER | PIN DIA OUTER INNER | PIN LENGTH | MAX WIDTH OF WEB | AXIAL LENGTH OF WEB | FEATURES E 58004 | LATE STD. 20 H.P. | KEY STAGE & TAPER | REV ENG TYPE | OVAL NOT DRILLED | FIT FULL CAP | 1.875 | 1.500 | 1.870 | 3.200 | .780 | C/SHAFT E.XPFTS WERE COMMENCED ON THIS SHAFT. (SEE SHT 2) F.C. 20 | | SPLINED | AS AL | INSIDE WEB DRILLED 1 HOLE DRILLED DYNAMICALLY ENDS FILLED INSIDE FILED | 16,335 | 1.820 | | | | | NEW SPRING DRIVE. F.8601 | | KEY TYPE | REV ENG TYPE | DRILLED THROUGH FOR DYNAMIC BALANCE ENDS FILLED | 26,100 | 2.020 | 1.625 1.125 | 1.870 | 3.000 | .718 | 1) STD JOURNAL THICKNESS .0625" 2) BIGGER DIA 3) OVAL WEBS 4) NEW SPRING DRIVE BUT SIMILAR TO E.XPFTS 5) STD SPRING DRIVE F.2640* | LGE. STAGE | KEY & TAPER | AS F8601 | | | 2.125 1.125 | 1.700 | 1.870 | 3.000 | .734 | F.2643 | LGE. STAGE | KEY & TAPER | AS F8601 | | | 2.125 1.125 | 1.700 | 1.870 | 2.680 | .735 | JAGGED FILLETS. F.9461 WIDER WEBS. F.4701 | PRESENT STD. 20 H.P. | KEY & TAPER | STD SPRING DRIVE | AS AT "A" OVAL | | 2.125 1.125 | 1.700 | 1.870 | 3.250 | .775 | F.8601 WITH OVAL WEBS. F.8044 | (10,000 MILES IN 10-1-28) FUTURE STD. 20 H.P. | KEY & TAPER | STD 20HP | OVAL DRILLED AS 60° | AS F.8044 | 2.000 1.250 | 1.700 | 1.870 | 3.000 | .717 | E.58004 WITH OVAL WEBS. F.8044 | STD. 20 H.P. | KEY & TAPER | STD. 20 H.P. | OVAL DRILLED AS 60° | | 2.125 1.125 | 1.700 | 1.870 | 3.250 | .725* | F.8601 BUT WITH STD. OILING SCHEME SECTION: PHANTOM - T.S.S. PART NO. | DESCRIPTION | TYPE OF REAR HUB DRIVE | SPRING DRIVE | WEB(S) SHAPE & WHETHER DRILLED | SPECIAL FITTING INSTRUCTIONS | JOURNAL DIA OUTER INNER | PIN DIA OUTER INNER | PIN LENGTH | MAX WIDTH OF WEB | AXIAL LENGTH OF WEB | FEATURES J.8316 | LATE STD. PHANTOM | KEY & TAPER | REVOLUTE | OIL CAPS OVAL NOT DRILLED | 48,100 | 2.625 | 1.875 | 1.870 | 3.375 | 1.075 | 1) NEW SPRING DRIVE 2) C/SHAFT BEINGS DAMPED & SMALLER DIA. J.6581 | CONTINENTAL STD. LGE. 3088 | SPLINED | AS STD. PH. AT 32° | OVAL DRILLED AS SAMPLES NOT DRILLED 1) DRILLED DYNAMICALLY ENDS FILLED | 38,820 | 2.625 1.125 | 1.875 | 2.000 | 3.802 | 1.000 | ABANDONED. E.75374 WITH STD SPRING DRIVE & LARGER JOURNALS. KINKS OWING TO HEAT IN B.W. WELD. J.6848* | | SPLINED | AS F.J. STG. | BEVELLED AS AT FCE FOR JOURNAL | | 2.625 1.375 | 1.833 | 4.000 | 1.000 | E.78216 WITH OVAL WEBS. J.7243* | LATE STD. PH. | KEY & TAPER | | OVAL BEVELLED | AS E78216 | | | | | | J.78216 | PRESENT STD. LGE 3180 IN ULK SHT. 64. 10 P.P. PER 10. | STD. PH. | | OVAL | | 2.625 1.375 | 1.833 | 4.000 | 1.075 | J.8404 | 10,000 MILES IN ULK BEX. | KEY & TAPER | STD. PH. | BEVELLED AS J.1. | AS E78216 | 2.625 1.300 | 1.833 | 4.000 | 1.000 | E.75374 WITH STD OILING SCHEME ALL S.S. INCORP. BUT FLEX. MARKS ON BIG END. | ||