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).
Responding to a query about a universal joint, detailing omissions and proposed changes to its rings and threads.
| Identifier | WestWitteringFiles\T\2July1928-December1928\ Scan030 | |
| Date | 19th July 1928 | |
| BY.{R.W. Bailey - Chief Engineer} [crossed out] FROM DA.{Bernard Day - Chassis Design} C. to BY.{R.W. Bailey - Chief Engineer} [crossed out] HS.{Lord Ernest Hives - Chair} ORIGINAL DA{Bernard Day - Chassis Design}4/M19.7.28. INDIA 3. - UNIVERSAL JOINT. X5340 [handwritten] Replying to BY/CGH{W Clough}11/G16728., we regret to see that on N. sch. 2589. we have omitted to deal with the question of assembling the rings. Though we had the point in mind it was overlooked at the last moment. We have indicated the idea on N. sch. 2661. (herewith). The flats originally [crossed out] extended [handwritten] /through the screw thread at the forward end, but in future we think it might be preferable to use a rather smaller and finer thread, as it appears can be done. The depth of the rings is maintained where the pins pass through. No doubt the machining of the trunnion ring you indicate does not seriously impair its strength, and could be used, but we think the flats indicated are preferable, the internal square of the trunnion ring being increased to 2.312, the dimension 2.250 cutting the rings away rather too much. DA.{Bernard Day - Chassis Design} | ||