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).
Secret memo discussing the design and modification of a hypoid rear axle.
| Identifier | ExFiles\Box 136\5\ scan0272 | |
| Date | 7th February 1931 | |
| BY.{R.W. Bailey - Chief Engineer} FROM DA.{Bernard Day - Chassis Design} SECRET. X2066 DA{Bernard Day - Chassis Design}1/M7.2.31. C. to SG.{Arthur F. Sidgreaves - MD} WOR.{Arthur Wormald - General Works Manager} C. to HS.{Lord Ernest Hives - Chair} HY.{Tom Haldenby - Plant Engineer} RHC.{R. H. Coverley - Production Engineer} JAPAN 3. HYPOID REAR AXLE. Herewith we send N. sch. 3206. - Rear axle centre casing. This is somewhat modified from the 25HP. because the larger axle shafts increase the differential and its bearings, and the 4.5 litre enginemakes it desirable to increase the pinion thrust bearing to make it comparable with P. 2. The pinion thrust bearing housing is an adaption (to suit larger dimensions) of that on N. sch. 2990. (Dec. 1929.) which we believed was never used. it appears to avoid the defects which came up in the scheme shewn on G.53920. (which was condemned by R.{Sir Henry Royce}) we should like more information on this point, viz: what modifications were made by RHC.{R. H. Coverley - Production Engineer} and were they a successful. DA.{Bernard Day - Chassis Design} | ||