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).
Resolving a design conflict by re-arranging engine controls for the swinging arm clutch operation.
| Identifier | ExFiles\Box 124\2\ scan0149 | |
| Date | 30th April 1940 | |
| BK{A. Birkett - Commercial Manager} 1044 FJH{Fred J. Hardy - Chief Dev. Engineer} SECRET. To Rm.{William Robotham - Chief Engineer} from Ev.{Ivan Evernden - coachwork} c. to Rm{William Robotham - Chief Engineer}/HH. Aiee Ev.{Ivan Evernden - coachwork}14/JH.30.4.40. Rm{William Robotham - Chief Engineer} HWynn Engine Controls to Suit Swinging Arm Clutch Operation. Right Hand Senionr Range. We have always understood that there was a foul somewhere between the swinging arm clutch operation design GCD.1499 and the control scheme ECD.1376 but we have never been certain where it existed. When detailing FCD.1500 simplified brake and clutch pedals for use with GCD.1499 the foul was discovered by Rm{William Robotham - Chief Engineer}/HH. By re-arranging the controls on the countershaft on the frame side channel gusset, as shewn on PL.206 (2 prints herewith) we have overcome the difficulty. A measure of cheapening has been achieved by the use of forked rod ends in the place of ball joints. P.T.O. | ||