The deletion of adjustment washers on the Wraith III gearbox to save assembly time.
| Identifier | ExFiles\Box 8\11\ 11-page098 | |
| Date | 13th September 1937 | |
| COPY. To BY. {R.W. Bailey - Chief Engineer} from HPS {Horace Percy Smith - Experimental Factory Mgr} /RH. {R. Hollingworth} c. to Rm. {William Robotham - Chief Engineer} c. to Da. {Bernard Day - Chassis Design} HPS. {Horace Percy Smith - Experimental Factory Mgr} /RH. {R. Hollingworth} 1/VS. {J. Vickers} 13.9.37. S E C R E T. WRAITH III GEARBOX. Deletion of Adjustment Washers. At present eight Adjustment Washers are used on Wraith III train of gears; by slight modifications these can be reduced to four, and one Distance Piece deleted, thus effecting a saving on assembly time for lining up gear. Sections affected :- 3rd Motion Shaft. Distance Washer GW.135-9 deleted and length of Adjacent Gear Boss increased to suit; limits on overall length of gear bosses altered to -.002. Adjusting Washers at Rear End to control float in gears are necessary. 2nd. Motion Shaft. Distance Piece GW.872, Adjusting Washers G.W.862-6 and GW.135-9 deleted and bosses increased in length to suit; limits on overall length of gear bosses altered to -.002. Adjustment Washers are necessary at each end of the 2nd Motion Shaft. HPS {Horace Percy Smith - Experimental Factory Mgr} /R. Hollingworth. | ||
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).