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).
Likely cause of a broken inlet valve on an Eagle 15 engine.
| Identifier | WestWitteringFiles\Q\April1927-June1927\ 68 | |
| Date | 6th May 1927 | |
| TO RO.{C. C. Rose - Export Manager} FROM R.{Sir Henry Royce} C. to --BG- HS.{Lord Ernest Hives - Chair} re. EAGLE 15. BROKEN INLET VALVE. From the experience we have had that the inlet valve is the first to leave the cam, this valve was almost certainly through the engine being run at a speed in which the inlet valve rocker leaves the cam. We ought to find out whether the valve springs were in good order, and then ascertain at what speed this happened. R.{Sir Henry Royce} | ||