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).
Suggested method for supplying oil to a hypoid pinion thrust bearing in a rear axle.
| Identifier | WestWitteringFiles\T\January1929-February1929\ Scan168 | |
| Date | 20th February 1929 | |
| ORIGINAL SECRET FROM DA.{Bernard Day - Chassis Design} C. to HS.{Lord Ernest Hives - Chair} SS.{S. Smith} REAR AXLE. HYPOID PINION THRUST BEARING. X.7350 [crossed out] X2666 We send herewith N. sch. 2834. shewing a suggested means of supplying oil to the forward race of the N.D. type bearing on hypoid pinions. This is following the experimental report on the trial at full throttle on low gear that this race appeared to be getting insufficient oil. We think that enough oil should be collected by this to supply the bearing. If not it is possible that by modifying the casing we can cast in a gallery opposite the crown wheel leading to a drilling to the top of the bearing housing which would ensure a full supply. As this means new casings we have not yet proposed it. If the bolt boss immediately above the bearing housing masks the slot we suggest that it can be [crossed out] cut back for a width of perhaps 1.5" opposite the crown wheel without causing any serious leak through the bolt. The latter could be provided with a cap nut if there was any leak at all. DA.{Bernard Day - Chassis Design} [Handwritten note] We had already completed a similar scheme & used it up for production. By 22.2.29 | ||