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 rig testing of valve springs.
| Identifier | ExFiles\Box 80\3\ scan0201 | |
| Date | 11th July 1914 | |
| 4290 From Exp. Dept. Copies for: J.{Mr Johnson W.M.} R.{Sir Henry Royce} E.{Mr Elliott - Chief Engineer} Na.{Mr Nadin} Wor{Arthur Wormald - General Works Manager}/EH8/L11714. July 11th.1914. Report on rig test of Valve Springs [Handwritten and crossed out: E4247 - A 500] These springs have run 10,000 miles at 2500 revs. without breakage. The springs were made at the Works and are similar to those used on the 150 hour bench test. | ||