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 model crankshaft to determine the effect of a long crank pin on torsional stiffness.
| Identifier | ExFiles\Box 85\5\ scan0090 | |
| Date | 2nd January 1935 guessed | |
| Hs{Lord Ernest Hives - Chair} 1580/1. 4.000 1.500 1.000 .300 .625 DIA 1.125 DIA .050 R 'A' .500 DIA. 1.000 DIA. 3.500 DIA. .350 6 HOLES EQUALLY SPACED .3125 DIA ON 3.000 DIA CTS.{C. Trot Salt - Carburation} BOTH ENDS SIMILAR 1 OFF WITH 'A' = 2.850 HS.{Lord Ernest Hives - Chair} 1580 1 OFF WITH 'A' = .750 HS.{Lord Ernest Hives - Chair} 1581 MODEL CRANK TO DETERMINE EFFECT ON TORSIONAL STIFFNESS OF LONG CRANK PIN AS IN CENTRE OF FOUR BEARING CRANKSHAFT | ||