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).
Graph showing the torsional deflection of a Standard Phantom crankshaft supported in the crankcase bearings.
| Identifier | ExFiles\Box 71\2\ scan0164 | |
| Date | 27th September 1926 guessed | |
| TORSIONAL DEFLECTION OF STD. PHANTOM CRANKSHAFT. CRANKSHAFT SUPPORTED IN THE BEARINGS IN CRANKCASE. ANGLE OF TWIST IN RADIANS TORQUE . lbs.ft. DOWN LOADS. UP LOADS. .030 1½° .025 1° .020 .015 .010 ½° .005 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 | ||