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).
Experiment for gear bush lubrication in the Phantom III Gearbox.
| Identifier | ExFiles\Box 94\1\ scan0216 | |
| Date | 17th October 1935 | |
| x 326 Rm{William Robotham - Chief Engineer} BY.{R.W. Bailey - Chief Engineer} C.E. Hs.{Lord Ernest Hives - Chair} Da.{Bernard Day - Chassis Design} RHC.{R. H. Coverley - Production Engineer} HDY.{William Hardy}1/HP.17.10.35. GRY{Shadwell Grylls} FAH Phantom 3 Gearbox. Gear Bush Lubrication. We send herewith N.Sch.4668 which shews an experiment to determine whether oil can be fed to the inside of the 3rd motion shaft by means of a scoop which picks up oil flung up by the 2nd speed S.M.cone. If it is shewn that this scoop will feed oil inside the shaft the next point is whether a sufficient quantity is supplied to feed all that the 3rd speed gear bushes can take at highest temperature conditions, and at all speeds, with a surplus to pass on to the spigot bearing. To determine this the shaft must be drilled at the 3rd speed gear, and we suggest that bushes with 50% more clearance than standard are fitted to obtain the maximum leak conditions. The open end of the 3rd motion shaft should be reduced to ½" diameter by a plug so that oil definitely goes down to the 3rd speed gears. The surplus will run from the shaft end as before. HDY.{William Hardy} N.Sch.4668 herewith. | ||