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).
Secret memorandum discussing the preliminary design scheme for the front suspension, steering, and sump of the 'Myth' project.
| Identifier | ExFiles\Box 110\3\ scan0089 | |
| Date | 24th June 1940 | |
| 1030 SECRET. To Rm{William Robotham - Chief Engineer}/EAG. from Ev.{Ivan Evernden - coachwork} c. to Rm.{William Robotham - Chief Engineer} c. to Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} re Project of Myth. We confirm that we left with you on Friday June 21st. 1940 a preliminary print of PL.273 a 1/2 scale scheme of the proposed front suspension and steering for Myth. The scheme has been/drawn for a 51 ins. front track and should this figure have to be reduced we believe it is not permissible/to reduce the length of the top suspension levers. The steering box can be moved inwards if desired by allowing the column to be desaxe relative to the longitudinal axis of the chassis. The steering column and box will be that being designed by Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} and having a rubber jointed worm tube. We favour the steering box mounted on the bath tub, as by so doing any movement of the latter relative to the wheel barrow arms will not affect the steering. The centre section of the bath tub cannot be nearer the ground and we believe that the bending stiffness at this point should not be materially less than at present provided. By providing a bulged sump, made of two pressings the necessary oil capacity can be achieved (1 2/3 galls) with a sump having a base no lower than the flywheel bell housing bottom cover. We believe we should attempt to so arrange the layout to permit of the sump removal with taking the unit out of the chassis. It may be assumed that the crankshaft can be turned to the best position, when the con-rod big ends and the balance weights do not protrude below the joint face. It will be necessary to be able to remove No.1 P.T.O. | ||