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).
The failure of a 4.H.S. gearbox and requesting its rebuild with a list of required new parts.
| Identifier | ExFiles\Box 94\2\ scan0246 | |
| Date | 11th June 1937 | |
| To HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} 328 Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}13/AP.11.6.37 GEARBOX 4.H.S. This gearbox failed owing to the nut at the front end of the side shaft coming undone, causing failure of the roller bearing which then had to take the thrust. Will you please rebuild the box replacing any damaged parts and also fit the following three new pieces:- (1) 2nd. speed bronze cone. (2) Pair of 1st. speed gears. (3) The bearing at the rear of the 3rd. motion shaft. (4) If available Scheme Ex.27546/7. We are asking for Nos. 1 and 2 to get information on the corrosion from the latest type of E.P. oils. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} | ||