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).
Recommendation to address oil leaks and broken bolts on the Bentley rear axle by increasing bolt size.
| Identifier | ExFiles\Box 84\4\ scan0144 | |
| Date | 4th February 1937 | |
| 202 To By.{R.W. Bailey - Chief Engineer} from Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} c. to E.{Mr Elliott - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} c. to Hdy.{William Hardy} Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}8/AP.4.2.37. BENTLEY REAR AXLE. Since the advent of heavier bodies, we have recently been troubled with oil leaks at the joint of the rear axle tubes and end plates, particularly during tests in France. On the bump we have broken some of the 1/4 bolts holding these parts together. We recommend these bolts are increased to 5/16. and that nuts E.50926 with .448" flats are used. These are already in use somewhere else on Production. We further suggest that the nuts are locked by tab washers say in batches of three. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} | ||