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).
Modifications to the steering box shaft design, comparing different schemes and manufacturing possibilities.
| Identifier | ExFiles\Box 80\1\ scan0218 | |
| Date | 1st August 1920 | |
| To R from DA.{Bernard Day - Chassis Design} Copy to BH. Copy to EFC. X 3920. DA{Bernard Day - Chassis Design}3/CB3-8-20. X 3920. RE STEERING BOX SHAFT. X.4073 --------------------------------- As requested we have modified the original drawing "N" Scheme 244 of the steering box shaft to shew a straight-through shaft instead of the shaft split before reaching the bearings, and shew the result on "N" Scheme 306 of which we send a print. It will be seen that the result is nearly as good as shewn on "N" Scheme 244, of which we also send a print, as regards both strength and weight. We have also taken the opportunity of shewing the flange formed on the end of the pendulum lever to enable it to be more easily withdrawn, which you recently suggested. We also shew in Fig 2 of "N" Scheme 306 a suggestion whereby the present construction of shaft and cheeses might be used, but a gain of strength and a reduction of weight effected as shewn on the right hand table on this drawing, but this also means a certain amount of alteration, as a new nut and new cheeses and new ball bearing nut are required, though the shaft could be machined from existing forgings. With reference to your inquiry regarding the possibility of screwing the outside of the boss of the pendulum steering lever, we have inquired in the works and they say they are able to do this on a P & J machine, but it is too large for a thread milling machine. They do not however like the job and would prefer that it was done in some other way without screwing if possible. This work has been set aside by other things. BA. | ||