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).
Confirming a maximum engine speed of 3,500 r.p.m. following a telegram about possible bearing failure.
| Identifier | ExFiles\Box 83\1\ scan0208 | |
| Date | 21th September 1936 | |
| x200a HOTEL DE FRANCE. CHATEAUROUX. Indre. France. GWH{George W. Hancock - Head Chateauroux}/IMW{Ivan M. Waller - Head of Chateauroux}/4/JAB. 21st September 1936 To. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} C.W.H. 6. B. IV. Further to your telegram of date re average speeds and possible bearing failure, we will keep within a maximum engine speed of 3,500 r.p.m. -------------- GWH{George W. Hancock - Head Chateauroux}/IMW.{Ivan M. Waller - Head of Chateauroux} Ivan M.{Mr Moon / Mr Moore} Waller. | ||