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).
Requesting a change in the rear axle ratio for the Bentley III due to the use of an overdrive gearbox.
| Identifier | ExFiles\Box 98\1\ scan0105 | |
| Date | 30th September 1937 | |
| By.{R.W. Bailey - Chief Engineer} from Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} 200B 402 Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}11/AP.30.9.37 REAR AXLE RATIO - BENTLEY III. In view of the use of an overdrive gearbox on this car, we want to lower the rear axle ratio from 10/41 to 10/43. Up till now we have had gears of 10/43 ratio made in America. We attach herewith a memo written by Clough some time ago, asking Roy.{Sir Henry Royce} to order the necessary index plates. This memo now merely needs a date and signature. Will you please put in hand the necessary machinery so that the new ratio is available in time. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} | ||