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 68° sentinels on Goshawk Dynamo chassis being replaced with 73° sentinels.
| Identifier | ExFiles\Box 51\1\ Scan169 | |
| Date | 2nd July 1923 | |
| X. 4383. 2.7.23. X. 4383. GOSHAWK DYNAMO. The 68° sentinels have melted on chassis 6 G.II and 7 G.II and have today been replaced with 73° sentinels. E.F.C. EFC. {E. Fowler Clarke - Electrical Engineer} | ||