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).
Steering system options for the 'Myth' vehicle, comparing Burman-Douglas worm and nut with cam and roller designs.
| Identifier | ExFiles\Box 110\3\ scan0115 | |
| Date | 23th December 1943 | |
| 750 Confidential. To: Ev.{Ivan Evernden - coachwork} from Rm.{William Robotham - Chief Engineer} Rm.{William Robotham - Chief Engineer} 2/h.{Arthur M. Hanbury - Head Complaints} 23.12.43. MYTH STEERING. At the present moment, we are relying on a Burman-Douglas steering for Myth. We know a great deal about worm and nut steering and I think we should review their design with the object of making sure that it has not inherent weaknesses. If any modifications are necessary, we can get Burman-Douglas to agree, or we may eventually make the steering ourselves. For our class of vehicle, we really should have a cam and roller type, and I think that this should be investigated in parallel with the Burman design. I believe the Vauxhall 25 had a very simple version before the war and, of course, the Saginaw people were producing tens of thousands for Chevrolets etc. in pre-war days. F.J.H. also, I believe, got out a tentative simplified design. Clearly, we come down to the usual balance sheet, comparing worm and nut and cam and roller - and that is : 1. Durability. 2. Efficiency. 3. Cost. 4. Weight. Rm.{William Robotham - Chief Engineer} | ||