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).
Blueprint of a Crankshaft Stiff Flange for a 40/50 model.
| Identifier | ExFiles\Box 137\4\ scan0238 | |
| Date | 2nd March 1931 guessed | |
| OTHER DIMENSIONS TO E 79788 RECESS FOR BOLT HEAD .750 H=396 3.050 .400 +/- .5 .300 .325 +/- .10 2.400 DIA .275 4.800 +/- .10 DIA 5.150 +/- .10 DIA 4.950 DIA Crs 5.699 DIA C L OF BRG CRANKSHAFT STIFF FLANGE 40/50 | ||