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).
Graph showing spring rating tests, plotting spring rating against total load to show the effect of deflection due to shackle movement.
| Identifier | WestWitteringFiles\O\2April1926-June1926\ Scan171 | |
| Date | 27th May 1926 guessed | |
| 42) SPRING RATING TESTS. (E) Effect of Deflection due to Shackle movement SPRING RATING LBS/IN 450 400 350 300 250 Corrected Bump Loading Narrow Pad Vertical Shackle Corrected O II E TOTAL LOAD LBS 0 300 600 900 1200 1500 1800 | ||