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).
Modifications to B.V. gearboxes, removing overdrive for Bentley 50's and correcting helical gear diameters.
| Identifier | ExFiles\Box 99\4\ scan0186 | |
| Date | 7th February 1939 | |
| 428 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}2/MH.{M. Huckerby}7.2.39. B.V. GEAR BOXES. Will you please put in hand two sets of standard type ratios as in box 3.B.V. This is because Sg.{Arthur F. Sidgreaves - MD} has requested that no Bentley 50's should have the overdrive. With regard to the two boxes Nos. 5 and 6.B.V. that you are building now with Buick cones, will you please have 020 ground off the diameter of all the helical gears. This is to correct an error on the original drawings. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} | ||