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).
Modifications to the dimensions of servo driving pins and the central hole of the servo plate.
| Identifier | ExFiles\Box 152\2\ scan0264 | |
| Date | 22th October 1940 | |
| 1294 To Rm.{William Robotham - Chief Engineer} c. to Rm{William Robotham - Chief Engineer}/MHR.{M. H. Rigby} [text struck through] c. to Rm{William Robotham - Chief Engineer}/HH. [text struck through] c. to Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} [text struck through] Ev{Ivan Evernden - coachwork}/Tln.4/JH.22.10.40. SERVO DRIVING PINS. We have examined the proposals in Rm{William Robotham - Chief Engineer}/MHR.{M. H. Rigby}4/et.20.10.40. and agree that the three driving pins should be made .310 - 1/2 diameter, the holes remaining at .3125 + 1 diameter as now. We note that the central hole in the servo plate is drilled not reamed and therefore cannot be a spigot. This hole should be a little larger to give reasonable clearance to the spigot piece which passes through it, say .6718 + 5 diameter instead of the present .6562 + 5 diameter. To Rm{William Robotham - Chief Engineer}/HH's. copy of this memo. we attach a copy of Rm{William Robotham - Chief Engineer}/MHR.{M. H. Rigby}4/ET.20.10.40. Will he please alter the details affected. Ev{Ivan Evernden - coachwork}/Tln. | ||