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 the Spectre gearbox, specifically the reverse gear oil duct and the location of the drain plug.
| Identifier | ExFiles\Box 94\1\ scan0040 | |
| Date | 26th September 1934 | |
| 328 To BY.{R.W. Bailey - Chief Engineer} from HDY.{William Hardy} HDY.{William Hardy}1/HP.26.9.34. c. Wor{Arthur Wormald - General Works Manager} E.{Mr Elliott - Chief Engineer} Hs.{Lord Ernest Hives - Chair} De. EHC. SpectreCodename for Phantom III Gearbox. ---------------- N. Sch.4183 herewith shows a modification to the oil duct feeding the reverse gear rear bearing to ensure that the supply will continue when the car is being reversed up any gradient up to 1 in 3. Will you also kindly remove the drain plug from the front face of the box and place it underneath, as shewn on N. Sch.4163 for the Wraith. HDY.{William Hardy} | ||