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).
Bijur oil system for the Wraith II steering box and its application on the Phantom III chassis.
| Identifier | ExFiles\Box 9\7\ 07-page040 | |
| Date | 26th February 1937 | |
| SECRET 650. To Ev.{Ivan Evernden - coachwork} from Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} c. to Da.{Bernard Day - Chassis Design} c. to By.{R.W. Bailey - Chief Engineer} c. to RHC.{R. H. Coverley - Production Engineer} c. to HPS.{Horace Percy Smith - Experimental Factory Mgr} Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer}1/AP.26.2.37. WRAITH II. STEERING BOX. Replying to E/Ev.{Ivan Evernden - coachwork}6/MN.25.2.37., we agree with the Design Dept. that the present system of conveying the bijur oil to the pendulum lever on our Marles Steering boxes is complicated and that it would be desirable to evolve something simpler. When the Wraith gear is applied to Phantom III., as we are doing experimentally on the Continental chassis, it is quite impossible to use either the present standard arrangement or N.Sch.5043 owing to lack of space between the gear and the crankcase. Therefore, as an alternative arrangement must be found for the Phantom III., and as the cost saving on Wraith is so small we do not consider it worthwhile proceeding with N.Sch.5043. We are experimenting with a coiled pipe for the bijur oil and intend to do some rig tests to determine the fatigue capacity of a coil. Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} | ||