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).
25/30 HP spring, noting modifications and potential issues with its life expectancy.
| Identifier | ExFiles\Box 119\1\ scan0006 | |
| Date | 3rd April 1937 | |
| -3- Rm{William Robotham - Chief Engineer}/Les.1/AP.3.4.37. 12. Except for the large spring eye this is a 25/30.HP. spring. Although we do not think this spring would have failed during French testing, its life is probably less than standard due to the fact that these particular springs had their camber changed. This involved heat treatment on the springs which had been previously cadmium plated. Rm{William Robotham - Chief Engineer}/Les.{Ivan A. Leslie} | ||