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).
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} | ||