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 for springs, axle pivots, and steering levers on a bumping rig.
| Identifier | ExFiles\Box 2\B002_X168\ 00000001-page260 | |
| Date | 1st September 1928 | |
| To HA. from HS{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} X168 HS{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}2/LGSC.9.28. X23 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} | ||