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).
Diagram illustrating the method for testing the torsional rigidity of a vehicle frame.
| Identifier | ExFiles\Box 170\2\ img283 | |
| Date | 4th August 1935 | |
| 11 Method for testing torsional rigidity of rear end of frame with independent front end. Channel irons are used in place of rear springs. Load is applied at plane of rear wheel centres. This method also used for frame with conventional type of springing. By using a bar and scales at the dash complete frame can be tested. Channel iron Load is taken on spring brackets Channel irons fastened in place Frame 4/8/35 | ||