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).
Revisions to the Senior Gearbox, including the speedo drive, damper pump casing, and dispatch of associated blueprints.
| Identifier | ExFiles\Box 136\2\ scan0200 | |
| Date | 1st March 1940 | |
| 1153v 1946 To Ev.{Ivan Evernden - coachwork} c. to Rm.{William Robotham - Chief Engineer} File Ev{Ivan Evernden - coachwork}/HH.8/JH.1.3.40. Senior Gearbox. Section 6035 Speedo Drive. PL.43 - L.H. Side change. PL.65 - Revised Gearbox. Please receive herewith blue prints of each of the following :- RG.{Mr Rowledge}463 D.C. - Casing - Damper Control Pump. RG.{Mr Rowledge}464 - Speedo Drive shaft II - I S/N 2563. RG.{Mr Rowledge}500 - Speedo Drive L.O.P. (1 sheet). The above parts have been produced in accordance with the schemes as shown. The damper pump casing has a revised oilway and it may be mentioned, has been moved .250 rear wards on gearbox to suit L.H. side change gear. The speedo drive shaft and the snout on damper pump casing have been lengthened to suit .300 wider gearbox. This completes the instructions for the above. Kindly instruct up as required. Ev{Ivan Evernden - coachwork}/HH. | ||