Requesting three experiments to be carried out on a B.50 gearbox to reduce noise.
| Identifier | ExFiles\Box 112\2\ scan0079 | |
| Date | 2nd January 1939 | |
| 828 TO HPS. {Horace Percy Smith - Experimental Factory Mgr} from Rm {William Robotham - Chief Engineer} /Gry. {Shadwell Grylls} c. Da {Bernard Day - Chassis Design} /Hdy. {William Hardy} Rm {William Robotham - Chief Engineer} /Gry. {Shadwell Grylls} 9/MH. {M. Huckerby} 2.1.39. B.50 GEARBOX. We have got to get this box quiet in the minimum possible time. We therefore ask you to urge the following three experiments. (1) The 17/33 1st. speed ratio. (2) The steady bearing on the layshaft discussed with Bellamy. (3) We want to lap a 1st. speed wheel against a pinion and then run it with an unlapped pinion. The wheel will have acquired some tip relief by this method. Rm {William Robotham - Chief Engineer} /Gry. {Shadwell Grylls} | ||
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).