Graph showing the camshaft torque for the Wraith III engine at 4500 RPM.
| Identifier | ExFiles\Box 7\8\ X 607 Camshaft-page33 | |
| Date | 16th June 1938 guessed | |
| WRAITH III CAMSHAFT TORQUE SPEED 4500 R.P.M. FRICTION NEGLECTED TORQUE DUE TO BALANCER INERTIA AND SPRINGS ONLY TORQUE DUE TO VALVE INERTIA VALVE SPRINGS, GAS PRESSURE WITHOUT BALANCER CAMSHAFT ANGLE DEGREES LBS. INS. | ||
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).