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).
Instruction to trial a bevel pinion with a hardened surface for the Phantom III back axle.
| Identifier | ExFiles\Box 92\6\ scan0146 | |
| Date | 24th April 1937 | |
| DY.{F R Danby} C.E. Des. Fut. M.S. 300B E/HDY.{William Hardy}4/HP.24.4.37. Phantom III Back Axle. Will you kindly instruct for trial a bevel pinion with hardened surface for the inner race of the roller bearing to reduce the wear caused by the rotation of the race on the pinion. E/HDY.{William Hardy} | ||