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 design progress of 'Project of Myth', focusing on suspension, track width, and body construction.
| Identifier | ExFiles\Box 109\3\ scan0009 | |
| Date | 28th June 1940 | |
| SECRET. [Handwritten: 1530 (crossed out)] [Handwritten: 700] To Rm.{William Robotham - Chief Engineer} from Ev.{Ivan Evernden - coachwork} c. to Rm{William Robotham - Chief Engineer}/EAG. c. to Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} Ev.{Ivan Evernden - coachwork}1/JH.28.6.40. re Project of Myth. [Handwritten initials: FJH{Fred J. Hardy - Chief Dev. Engineer}] We wish to confirm that we left with Mr. Green a 1/4 scale layout of the engine, gearbox, transmission and axle coupled with a front suspension, all of which we believe have been located to conform as nearly as possible, to the requirements of the floor and seating positions laid down by the Coachwork Section and agreed to at the conference reported in the minutes reference Rm.{William Robotham - Chief Engineer}9/ML.3.6.40. We have shewn some suitable pedals with the normal dimension of 29.500 ins. from the accelerator pedal plate (in the throttle closed position) to the bottom of the steering wheel. Today we shall leave at the Clan Exptl: a layout of the rear axle and rear wheel movements. This will be based on a distance between the rear door pillars of 48.000 ins. as given in Rm.{William Robotham - Chief Engineer}9/ML.3.6.40. A minimum rear track and rear wing width will result. Assuming a front wing width equal to the rear we shall also give from this a front track. Thus having established the minimum difference between the two tracks, weshall be in a position to state the equivalent front track for any given rear track. In order to enable us to proceed we would like then a final decision on the rear track, when we can go ahead with full scale designs of the front suspension and rear axle. The next item which is in rather urgent need of a design project is the actual construction of the body base or sheet metal subframe, and the front arms. We suggest that an early contact with P.S.C. would be of help if the question of whether we have a detachable wheel barrow or integral arms as on the Minx, will be decided by whether our car is too long to be fabricated with integral front arms. | ||