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).
The material of adjusting washers for the bevel pinion main bearing on a Bentley chassis.
| Identifier | ExFiles\Box 86\4\ scan0139 | |
| Date | 16th April 1937 | |
| 228. c. Rm{William Robotham - Chief Engineer}/Grys. BY.6/G.16.4.37. BENTLEY CHASSIS - RE: BEVEL PINION DOUBLE PURPOSE MAIN BEARING. ------------------------------------------------------ It is very evident from what Mr. Grylls is telling me that the adjusting washers which are made in mild steel are wearing in the assembly. We cannot increase the interference fit of the bearing. It therefore appears to be necessary to make these pieces in case hardened steel, the depth of carburisation after finishing should be .015. Would you kindly look into the matter, as probably Phantom lll and 25/30 may require similar treatment. By BY.{R.W. Bailey - Chief Engineer} | ||