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 with three graphs showing deflection vs. applied load for a rear road spring after a 5000-mile run.
| Identifier | ExFiles\Box 67a\2\ scan0192 | |
| Date | 10th September 1928 | |
| E REAR ROAD SPRING 8 EX. N.S. - 1950 LB CHASSIS TYPE FULCRUM DRY RUN 5000 MILES IN 6 MONTHS. 10. 9. 28 Graph 1 (Top): TEST No 3 Y-Axis (DEFLECTION - INS): 12.0, 10.0, 8.0 X-Axis (APPLIED LOAD - LB-): 1200, 1400, 1600, 1800, 2000 Right Axis (HYSTERISIS LBS.): 260, 252, 244 Graph 2 (Middle): TEST No 2 Y-Axis (DEFLECTION - INS): 12.0, 10.0, 8.0 X-Axis (APPLIED LOAD - LB-): 1200, 1400, 1600, 1800, 2000 Right Axis values: 260, 244, 228 Graph 3 (Bottom): TEST No 1 Y-Axis (DEFLECTION - INS): 12.0, 10.0, 8.0 X-Axis (APPLIED LOAD - LB-): 1200, 1400, 1600, 1800, 2000 Right Axis values: 256, 250, 244 | ||