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).
Valve spring tests, noting breakages in standard and special set-ups after mileage.
| Identifier | ExFiles\Box 80\3\ scan0222 | |
| Date | 31th October 1912 | |
| R.R. 238 (24 B) (LL. 255. 10.6.12) E.P. 1997. ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: Mr Barrington Order No. Customer's No. W.P. Report Valve Spring Tests. The 3rd set of 6 springs with standard valves & washers, have completed 10,000 miles. There was one breakage which was reported at the time. The engine on the test plate which has the taper valve springs with special valves & washers has broken two springs. cr{Mr Cra???ster / Mr Chichester}°1 exhaust after 8,950 miles cr{Mr Cra???ster / Mr Chichester}°9 inlet " 8,950 " This engine has only been running at normal speeds, most of the running done at 40 m.p.h. Signed: LAA MRadley This Sheet must be filed on completion of the work. | ||