Blueprint detailing cracks found in exhaust valve seats after a 13,529 mile test in France.
| Identifier | ExFiles\Box 101\2\ scan0259 | |
| Date | 9th March 1937 | |
| C 17 UNIT CRACKS IN EXHAUST VALVE SEATS AFTER 13,529 MILES TEST IN FRANCE CYLINDER HEAD EG0891 DETURBULATED TO LEG. 5002 6 5 Nos 10 & 11 VALVE SEATS CRACKED RIGHT ACROSS AS SHOWN. No 11 BEING THE LARGER CRACK 12 11 10 CRACKED EXHAUST VALVE SEATS [X] 138 ROLLS-ROYCE, LTD. PRINT ROOM 9 MAR 1937 DERBY | ||
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).