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).
Modification to a gearbox part after a preliminary test failure.
| Identifier | ExFiles\Box 94\2\ scan0281 | |
| Date | 2nd September 1937 | |
| 328. To HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}3/AP.2.9.37 GEARBOX 4.HS.{Lord Ernest Hives - Chair} The preliminary test on the N.Sch.5151 type of 2nd. speed piece shows that it jumps out of gear. Will you, therefore, please modify the sliding piece by relieving 18 adjacent teeth on the drive side by .006. This will leave 9 adjacent teeth to take the drive. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} | ||