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).
The J.3. Gearbox for the Vulture, detailing changes in gear ratios and specifications.
| Identifier | ExFiles\Box 123\3\ scan0077 | |
| Date | 14th December 1933 | |
| To BY.{R.W. Bailey - Chief Engineer} from HDY.{William Hardy} c. Wor.{Arthur Wormald - General Works Manager} E.{Mr Elliott - Chief Engineer} Hs.{Lord Ernest Hives - Chair} Da.{Bernard Day - Chassis Design} NNC. X570D. HDY.{William Hardy}1/HP.14.12.33. J.3. Gearbox in Vulture. We are sending herewith N.Sch.3906 which shows higher indirect ratios for the Vulture on the lines of those used on the Bentley. All helical gears are 12 D.P. instead of 14 for J.3. HDY.{William Hardy} | ||