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).
Test report on the torsional deflection of front road springs, detailing the springs used for the tests.
| Identifier | ExFiles\Box 54\3\ Scan130 | |
| Date | 19th August 1924 guessed | |
| -2- TORSIONAL DEFLECTION OF FRONT ROAD SPRINGS. SPRINGS USED FOR THESE TESTS :- | | Std. 40/50. | No.3 | No.4. | |---|---|---|---| | No. of spring. | | | | | Piece No. | F.4634 | F.71244 | F.71568 | | Type. | 1150 | 1150 | 1150 | | Length. | 42" | 43¼" | 43¼" | | Period with load of 1150 lbs. | 104 oscl:min. | 120 oscl:min. | 107 oscl:min. | contd :- | ||