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).
Issues with the magneto drive on the 40/50 chassis and proposing improved designs.
| Identifier | ExFiles\Box 76\2\ scan0107 | |
| Date | 4th April 1919 | |
| R.R. 235a (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. To R.{Sir Henry Royce} from EH. c. to CJ c. to E.{Mr Elliott - Chief Engineer} c. to BY.{R.W. Bailey - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} EH4/LG4.4.19. 4th April 1919. RE 40/50 CHASSIS MAGNETO DRIVE X.2762 The magneto drive on the 40/50 chassis is not altogether a very satisfactory job. Nearly every car that comes in for repair, hardened steel blocks have to be replaced. We suggest that we try a magneto coupling made in a similar way to the latest camshaft drive on the aero engines. The aero engine has proved that the serrated type of coupling is very much more reliable than the block type. Another great advantage in them is that there is no hand fitting required whereas on the present magneto drive, there is. X 355 We also suggest, if we are making any large number of the 40/50 chassis, we might try and fit a similar form of coupling between the engine and the gearbox. The block coupling in that position is not altogether satisfactory. We think that the coupling which we made on the Fellows Gear Cutter for the improved "Eagle" epicyclic gear was such a delightful job that it is a pity we cannot make use of it on the car. It should be less costly to produce and would require no fitting. EH. | ||