Exhaust valve failure, detailing the subsequent damage to the piston and cylinder.
| Identifier | ExFiles\Box 83\1\ scan0445 | |
| Date | 15th April 1937 | |
| 200a HOTEL DE FRANCE. CHATEAUROUX(French test region). Indre. France. Rm {William Robotham - Chief Engineer} /GWH {George W. Hancock - Head Chateauroux} /IMW {Ivan M. Waller - Head of Chateauroux} /7/JAB. 15th April 1937. To. Rm. {William Robotham - Chief Engineer} c.c. Rm {William Robotham - Chief Engineer} /GWH. {George W. Hancock - Head Chateauroux} 6. B. IV. EXHAUST VALVE FAILURE. Further to our telegram and Daily Report, the head came off N° 7 KE.965 Exhaust valve during yesterday's running. It was fitted in place of the S/SLV valve that failed before, and has run 7,700 miles. It will be recalled that during this mileage N° 7 valve spring broke. The head of the valve has gone. The piston is broken and the cylinder rather scored. We have dressed it up ready for fitting a new piston when received. The inlet valve is knocked about and needs replacing. N° 4 Connecting rod and big end bearing in A.C.6.S. are in good condition. ----------- Rm {William Robotham - Chief Engineer} /GWH {George W. Hancock - Head Chateauroux} /IMW. {Ivan M. Waller - Head of Chateauroux} | ||
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).