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).
Revised serrations for the steering gear rocker shaft on Wraith models.
| Identifier | ExFiles\Box 153\1\ scan0294 | |
| Date | 8th May 1939 | |
| c. Rm.{William Robotham - Chief Engineer} 1300. DA.{Bernard Day - Chassis Design}6/G.8.5.39. WRAITH III, WRAITH 80, B.5, B.50. STEERING GEAR. F.T. HARDY Please receive herewith FD.{Frank Dodd - Bodies}428 shewing revised serrations on the rocker shaft, as an insurance policy in view of the failure of one Phantom III rocker shaft. The serrations now shewn are those of the original design N.Sch.4789 and make the rocker shaft considerably stronger than the pendulum lever. The parts affected are rocker shaft, pendulum lever, Perfect oil seal, steering box cover and lubricating oil pipe. It is understood that there is no difficulty about getting tools for these serrations. Please detail and instruct experimentally. Future Wraith 80's, at least, should have this rocker shaft. DA.{Bernard Day - Chassis Design} | ||