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).
List of modifications required for Gearbox B.III No.1 before fitting it into an 8.B.V.
| Identifier | ExFiles\Box 99\4\ scan0150 | |
| Date | 11th August 1938 | |
| 428 also 828 HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} Rm{William Robotham - Chief Engineer}/Gry{Shadwell Grylls}1/R.11.8.38. GEARBOX B.III No.1 for 8.B.V. After removing this gearbox from 1.B.50 certain modifications are required before it is fitted in 8.B.V. These are:- (1) Refit 12º top and overdrive cones. (2) Fit 9º 2nd speed cones with synchromesh plungers. (3) Reverse shaft with twice the slant it has now. (4) New top and 3rd sliding piece corrected to the latest drawings. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} | ||