Implemented and pending modifications to Senior Range gearboxes.
| Identifier | ExFiles\Box 136\2\ scan0319 | |
| Date | 1st March 1941 | |
| To-Ex. from Rm {William Robotham - Chief Engineer} /HH. c. to Rm. {William Robotham - Chief Engineer} c. to WH. c. to Ev {Ivan Evernden - coachwork} /CD. c. to Sv/Rln. c. to Rm {William Robotham - Chief Engineer} /Wym. {G. Harold Whyman - Experimental Manager} c. to Rm {William Robotham - Chief Engineer} /HH/Shaw. 1153 Rm {William Robotham - Chief Engineer} /HH.2/SW.1.3.41. re: Gearbox - Senior Range. In reply to your memo Ev. {Ivan Evernden - coachwork} 6/JH.21.2.41, we would confirm that the following schemes have been incorporated in the seven gearboxes instructed and almost completed:- PD.477 B.V. Gearbox modified for Wraith 80. PD.478 Pinion on Reverse Shaft - Wraith 80. PD.484 Modified 2nd Speed synchromesh - Wraith 80. PD.494 Strengthened 3rd speed dogs - Wraith 80. PL.31 Steering column control gear. PL.43 L.H. Side Change Gear. PL.65 Revised Gearbox. PL.79 Vacuum Cylinder and Valve Control. PL.73 Actuation in Gearbox & Column Control. PL.105 Riding Control - RH {R. Hollingworth} Side Change. PL.121 Stiffened Side change cross shaft. PL.122 Tecalemit Lubrication. PL.122A Modification to PL.122 PL.220 Revised Column Gear Control. PL.389 Revised 3rd & 4th Synchro Key. The two further schemes quoted on Ev. {Ivan Evernden - coachwork} 6/JH.21.2.41, were issued at a much later date and as we are anxious to complete these boxes, they have not been included. They are :- PL.368 8 D.P. 1st speed teeth. PL.373 Strengthened 2nd speed dogs. The points raised at the discussion held at Park Leys on Feb. 21st 1941, have been considered as follows :- (1) The Gearbox as detailed by Ev. {Ivan Evernden - coachwork} already has provision for the RH {R. Hollingworth} or LH {Mr Haworth} side change, and the LH {Mr Haworth} column control. (2) The 9 D.F. gear details are being produced and will be introduced on all future gearboxes. (continued) | ||
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).