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).
Final report on the testing of Poldi Valve Springs, which was abandoned due to a high failure rate.
| Identifier | ExFiles\Box 80\3\ scan0247 | |
| Date | 18th March 1913 | |
| From Exp. Dept. Copies for: Mr Johnson Mr Royce Mr Elliott Mr Nadin. AW/EM14/L18313 March 18th. 1913. Final Report on X. 74 Poldi Valve Springs. We have had 6 of these springs break in 150 hours, this is a greater percentage than any other springs we have tested. We have now abandoned the test. Mr Elliott is taking two of these broken springs with him to Le CanadelHenry Royce's French residence. | ||