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).
Torsional test results and diagrams for a Falcon model crankshaft.
| Identifier | ExFiles\Box 63\4\ scan0128 | |
| Date | 25th September 1930 guessed | |
| X4499 FALCON MODEL CRANKSHAFTS TORSIONAL TESTS DES 995 MODEL OF E.32053 CRANK. DATUM POINTS. READINGS SHOWN ----- DENOTE DEFLECTIONS UNDER A LOAD OF 750 LBS. ON LEVER AT 8.125" RAD. " " --- " " PERMANENT SET. FLYWHEEL DATUM PEGS SWEATED ON FOR CONVENIENCE OF CLOCKING LOAD APPLIED ON THIS ¢ PARTICULARS OF JOGGLING TEST. Table: R.P.M | I ON FLYWHEEL LBS FT 2 | REVERSALS | RESULT 300 | 15.1 | 2,818,400 | UNBROKEN 300 | 18.55 | 1,007,380 | FRACTURED | ||