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).
Chart with three graphs showing the results of rear road spring tests after 5,000 miles of use.
| Identifier | WestWitteringFiles\S\September1928-October1928\ Scan056 | |
| Date | 31th August 1928 | |
| D/ 31-8-28 REAR ROAD SPRING TESTS - 8 EX N.S. - 1950 LBS SPRING PAD & CLIPS FITTED. SPRING RUN 5,000 MILES IN 6 MONTHS. Graph 1 (Top): TEST Nº3. DIFFERENCE UP & DOWN Right Axis: 280, 260, 234 Left Axis (DEFLECTION - INS - SPRING TIP.): 11, 9, 7 Bottom Axis (APPLIED LOAD - LB-): 1200, 1400, 1600, 1800, 2000 Graph 2 (Middle): TEST Nº2 Right Axis: 250, 200 Left Axis (DEFLECTION - INS - SPRING TIP.): 11, 9, 7 Bottom Axis (APPLIED LOAD - LB-): 1200, 1400, 1600, 1800, 2000 Graph 3 (Bottom): TEST Nº1. Right Axis: 290, 260, 230 Left Axis (DEFLECTION - INS - SPRING TIP.): 11, 9, 7 Bottom Axis (APPLIED LOAD - LB- SPRING TIP.): 1200, 1400, 1600, 1800, 2000 Handwritten Note (left margin): Margin for files | ||