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).
Note detailing the particulars of reverse pinion teeth for the Wraith 80 gearbox.
| Identifier | ExFiles\Box 109\1\ scan0140 | |
| Date | 21th July 1939 | |
| c. Rm.{William Robotham - Chief Engineer} 666 DA.{Bernard Day - Chassis Design}1/G.21.7.39. WRAITH 80. GEARBOX. Herewith PD.478 giving particulars of reverse pinion teeth for the Wraith 80 gearbox shown on PD.477. DA.{Bernard Day - Chassis Design} | ||