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 points to note during the assembly and testing of a B.V. gearbox.
| Identifier | ExFiles\Box 99\4\ scan0217 | |
| Date | 10th June 1939 | |
| H28 To RHC.{R. H. Coverley - Production Engineer} from Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} c. LA.{L. A. Archer} c. By/CRL.{C. R. Lisson} Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}2/MH.{M. Huckerby}10.6.39. POINTS TO NOTE IN ASSEMBLY AND TESTING OF B.V. GEARBOX. (1) When the sliding piece works into mesh in overdrive it must be stopped by the overdrive gear and not by the gear lever in the gate. (2) When the gear lever is pushed as far as possible into reverse it must be .070 clear of the gate, to allow for engine movement. (3) The reverse selector spring is stronger than the others and painted red. The force on the gear lever just below the knob to pull the lever out of reverse must be 18-21 lbs. (4) The force of the gear lever knob to pull the other gears out of mesh must be 9-12 lbs. (5) All gears must be run in on HiPress. This includes reverse which should be given a hundred yards up hill to run in the whitemetal bushes. (6) The end load of the synchromesh springs is 28-32 lbs. for all gears measured on the sliding piece. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} | ||