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).
Melted condenser sentinels for the Goshawk engine.
| Identifier | ExFiles\Box 52\3\ Scan126 | |
| Date | 22th September 1923 | |
| X. 4430 EFC {E. Fowler Clarke - Electrical Engineer} 3/T22.9.23. X. 4430 - GOSHAWK CONDENSER SENTINELS. The only condenser sentinels which have melted have been one 65ºC on 7GII and 73º on 4GII. E.F.C. EFC. {E. Fowler Clarke - Electrical Engineer} | ||