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).
The construction of a specimen 3rd speed epicyclic train for testing a revised gearbox.
| Identifier | WestWitteringFiles\V\October1930-February1931\ Scan016 | |
| Date | 14th October 1930 | |
| P/Y. FROM DA.{Bernard Day - Chassis Design} C. to - SG.{Arthur F. Sidgreaves - MD} [Text is struck through] C. to - RS.{Sir Henry Royce's Secretary} 11 DA{Bernard Day - Chassis Design}1/WW/14.10.30. x 7310. x 5310. x 523. (9 1/2 13 10/30) GEARBOXES - EPICYCLIC ORIGINAL Herewith we send N. sch. 3149. shewing the epicyclic 3rd. speed train in the revised gearbox, the object being for you to make a specimen train for the purpose of testing as soon as possible. We have also shewn an outline of the box so that you can construct one for testing purposes, but the latter is liable to be modified as we develop the controls. It will be noticed that we have provided for grinding the annulus, and the first train should be so treated if possible. Also NSCH 3155 - 3 speed Box This letter on Monday DA.{Bernard Day - Chassis Design} OA | ||