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).
Torsion and oscillation tests conducted on front road springs.
| Identifier | WestWitteringFiles\L\July1924-September1924\ Scan75 | |
| Date | 20th March 1924 | |
| R.E. 493A (20H) (D.A. 652 20-3-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. 9410 2628 REF: Hs{Lord Ernest Hives - Chair}/ACL/LG19. 8. 24. TORSION AND OSCILLATION TESTS ON FRONT ROAD SPRINGS. Springs of different rating were tested to compare their resistance to twisting when subjected to a torque similar to that obtained by the application of the brakes on the car. A testing rig was arranged as below :- P Pull measured by spring balance. L POINTER W Wt. to give flat camber to spring. The length of the torque arm L. was 16" which is approximately the same as the equivalent arm through which the torque acts when the spring is mounted on the car. The test apparatus was arranged to give the same conditions as when the spring was subjected to braking torque on the car. Wt. W is eqvt. to reaction of wheel on road. Force P is eqvt. to frictional force between tyre and road. The tabulated results of these tests are given and curves supplied. contd:- | ||