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 versus angular deflection for a dynamo flexible coupling under different conditions.
| Identifier | ExFiles\Box 132\1\ scan0094 | |
| Date | 17th November 1938 | |
| DYNAMO FLEXIBLE COUPLING Nº 21.14 TORQUE IN LBS. FT. ANGULAR DEFLECTION IN DEGREES DRG. Nº 20045. METALASTIK LTD 17/11/38 RB{R. Bowen} 30° H 40° H MAXIMUM TORQUE 10 LBS/FT. | ||