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 rig for testing Vulture auxiliary gearboxes, discussing the unavailability of a Wraith engine and the modification costs for a substitute.
| Identifier | ExFiles\Box 143\1\ scan0386 | |
| Date | 12th December 1939 | |
| C.T.S 1209 File EJJ/DH{D. Henderson - Showroom}30/JA.12.12.39. Rm.{William Robotham - Chief Engineer} from EJJ/DH.{D. Henderson - Showroom} Unit from Shellow should be handed to Repair Dept Re:- Rig for Testing Vulture Auxiliary Gearboxes. With reference to your memo Rm.{William Robotham - Chief Engineer}6/MH.{M. Huckerby}3.10.39., re Wraith Engine for driving the above, we understand that the unit is not now available. We have now reached the position where the engine will be required in a short time, and we would point out that the substitution of another driving unit would entail modifications costing approximately £400. 0l 0d. EJJ/DH.{D. Henderson - Showroom} | ||