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 life testing of 20 HP front road springs supplied by Messrs. Firths.
| Identifier | ExFiles\Box 119\2\ scan0240 | |
| Date | 14th March 1925 | |
| V4268 To BY.{R.W. Bailey - Chief Engineer} from Hs.{Lord Ernest Hives - Chair} c. to Wd.{Mr Wood/Mr Whitehead} Hs{Lord Ernest Hives - Chair}1/LG14.3.25. 20 HP. ROAD SPRINGS. 44261 With reference to the special front springs for the 20 HP. which have been recently supplied by Messrs. Firths in which they were given a free hand as regards the design of the spring. We have so far broken three of these on the bumping rig. The average life is approximately 15 hrs. This is about the same as we have obtained on previous 20 HP. springs we have tested. We will let you have a complete report when we have tested the rest of the springs. Hs.{Lord Ernest Hives - Chair} | ||