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).
Specifications and modifications for B.V. gearboxes for Corniche cars.
| Identifier | ExFiles\Box 97\3\ scan0160 | |
| Date | 23th June 1939 | |
| HSO - 428 To By/NS.{Norman Scott} from Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} c. By/CRL.{C. R. Lisson} Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}2/MH.{M. Huckerby}23.6.39. B.V. GEARBOXES. The next six production boxes for the Corniche cars should include - (1) Top and Overdrive cones with strengthened lugs GB.5131/2. (2) 2nd. speed cam and dog angle to the latest drawings. (3) All cones lightened as discussed with By/CRL.{C. R. Lisson} (4) Servo oil seal PD.450. (5) Correct operating forks. (6) Selector forks with wider jaws. All the boxes including the first 12 should have - (a) Side shaft bearings with composite brass and steel cage. (b) Mod. (3) above. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} | ||