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).
Speedometer drive modification needed for the new 10-43 axle ratio on Bentley cars.
| Identifier | ExFiles\Box 83\2\ scan0191 | |
| Date | 26th January 1938 | |
| F.DODD. Please follow up CHATEAUROUX.I/26.I.38 Rm{William Robotham - Chief Engineer} To. Rm.{William Robotham - Chief Engineer} from Rm{William Robotham - Chief Engineer}/IMW.{Ivan M. Waller - Head of Chateauroux} c. By.{R.W. Bailey - Chief Engineer} 200a 6.B.IV. - BENTLEY. SPEEDO DRIVE TO SUIT 10-43 AXLE RATIO. The speedometer of this car is geared for the standard 10-41 axle as no modification was available to suit the lower axle ratio. Since the overdrive gearbox and 10-43 axle are to be standardised, the necessary modification to the speedometer ratio will be required. [Handwritten query and response below] Does this mean that the 10/43 axle is to be standardised for, and fitted on, the new (M) series of Bentley cars ? c.a.p. --------- If all goes well in France, latter half of 'M' series. Rm{William Robotham - Chief Engineer}/IMW.{Ivan M. Waller - Head of Chateauroux} I. Waller Rc.{R. Childs} | ||