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 torque against angular deflection to show the torsional stiffness of a Studebaker damper for different rubber types.
| Identifier | ExFiles\Box 124\1\ scan0230 | |
| Date | 28th June 1937 | |
| TORSIONAL STIFFNESS OF STUDEBAKER DAMPER FIG 5. TORQUE LBS. FT. ANGULAR DEFLECTION DEGREES 75-80 RUBBERS 55-60 RUBBERS 35-40 RUBBERS RM{William Robotham - Chief Engineer} / J.R.S. 28-6-37 | ||