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 for the B.V. Gearbox for the Wraith 80.
| Identifier | ExFiles\Box 109\1\ scan0141 | |
| Date | 25th July 1939 | |
| BY/NS.{Norman Scott} c. Rm.{William Robotham - Chief Engineer} 666 GRY{Shadwell Grylls} DA.{Bernard Day - Chassis Design}25/N.25.7.39. PD.477 - B.V. Gearbox Modified for Wraith 80. The modifications are principally, stronger gears, widened where possible; stiffer shafts, and reversion to standard ratios. A gearbox can be built for dynamometer test using the existing gearbox casting, and the B.V. centre bearing. DA.{Bernard Day - Chassis Design} | ||