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).
Modification to the jaw clutches in the revised epicyclic third speed gearbox.
| Identifier | WestWitteringFiles\V\October1930-February1931\ Scan043 | |
| Date | 29th October 1930 | |
| P/. FROM DA.{Bernard Day - Chassis Design} Copy to SG.{Arthur F. Sidgreaves - MD} [Struck through] Copy to ES. EPICYCLIC THIRD SPEED GEARBOX [Stamped: RECEIVED 30 OCT 1930] [Stamped: ORIGINAL] x7310. x5310. x523. Herewith we send N. sch 3158 shewing a modification to the jaw clutches in the revised epicyclic 3rd. speed gearbox. The modified jaws shewn are those between the 2nd. and 3rd. speed, but they are also applicable with very slight variations to the jaws for the top and 3rd. speeds. It is not intended that this modification should apply to any pieces you have already made or are well advanced for the trial epicyclic train. DA{Bernard Day - Chassis Design} | ||