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 plotting the torsional deflection of a standard Phantom crankshaft against applied torque.
| Identifier | ExFiles\Box 25\3\ Scan150 | |
| Date | 1st October 1926 guessed | |
| TORSIONAL DEFLECTION OF STD. PHANTOM CRANKSHAFT., CRANKSHAFT SUPPORTED IN THE BEARINGS IN CRANKCASE., ANGLE OF TWIST IN RADIANS, TORQUE lbs.ft., .030, 1½°, .025, .020, 1°, .015, ½°, .010, .005, DOWN LOADS, UP LOADS, 0, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000, 1100, 1200 | ||