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).
Engine detonation on a Bentley B.III No.2 unit and organising further testing.
| Identifier | ExFiles\Box 97\5\ scan0349 | |
| Date | 6th June 1939 | |
| HODOW To Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} from Rm{William Robotham - Chief Engineer}/IMW.{Ivan M. Waller - Head of Chateauroux} c. Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation} Rm{William Robotham - Chief Engineer}/IMW.{Ivan M. Waller - Head of Chateauroux}3/MH.{M. Huckerby}6.6.39. 7.B.V. - BENTLEY. B.III NO.2 UNIT. 7 - 1 RAISED CROWN PISTONS. Detonation has become worse on this engine, and with the best governor curve we could obtain, it is necessary to retard the ignition more than is desirable or acceptable to stop detonation on Ethyl. We are handing the pistons and cylinder head exactly as removed without disturbing the carbon, to Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation} Will you please carry out tests on detonation in continuation of your work with clean pistons and cylinder head. Rm{William Robotham - Chief Engineer}/IMW.{Ivan M. Waller - Head of Chateauroux} | ||