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).
The minimum satisfactory life of springs, axle pivots, and steering levers on a bumping rig.
| Identifier | ExFiles\Box 49\4\ Scan215 | |
| Date | 20th September 1928 | |
| To NA. {Mr Nadin} from Hs {Lord Ernest Hives - Chair} /Rn. {Mr Robinson} Y23 Hs {Lord Ernest Hives - Chair} /Rm {William Robotham - Chief Engineer} 2/LG20.9.28. Y23/X168 The minimum satisfactory life on the bumping rig for springs is 25 hrs - axle pivot and steering 100 hrs. As a matter of fact we have never broken an axle pivot or steering lever of our latest design. Hs {Lord Ernest Hives - Chair} /Rn. {Mr Robinson} | ||