Development of a Phantom III gearbox with an overdrive ratio.
| Identifier | ExFiles\Box 94\2\ scan0094 | |
| Date | 1st December 1936 | |
| 328 Sg. {Arthur F. Sidgreaves - MD} from Rm. {William Robotham - Chief Engineer} c. to Hs. {Lord Ernest Hives - Chair} c. to E. {Mr Elliott - Chief Engineer} c. to By. {R.W. Bailey - Chief Engineer} c. to Da. {Bernard Day - Chassis Design} c. to Hdy. {William Hardy} P.III Gearbox. Rm {William Robotham - Chief Engineer} 4/R.1.12.36. Replying to Sg. {Arthur F. Sidgreaves - MD} 15/E.27.11.36., we hope to be able to let you try the box with the over-drive ratio before Cristmas. We should like to point out that we do not anticipate a 3-speed box with an over-drive ratio will be any less complicated, or bulky, than the existing 4-speed gearbox. Referring to the Packard box, we cannot use the one off the car which EP. {G. Eric Platford - Chief Quality Engineer} has, as it is too small for the P.III. Rm. {William Robotham - Chief Engineer} | ||
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).