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 specifications for building a Wraith 80 bump chassis for the Experimental Department.
| Identifier | ExFiles\Box 119\1\ scan0219 | |
| Date | 30th June 1939 | |
| 1024 & 1044 To HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale} Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale}4/MH.{M. Huckerby}30.6.39. WRAITH 80 BUMP CHASSIS. The long frame recently delivered to the Experi-mental Department is to be built into a bump chassis. The usual bump chassis components are to be added and these will be to standard specification except in the following cases:- Torque arms O.S. Cast iron. N.S. Aluminium RR.50. Front damper O.S. ExS.1531 (Aluminium) SCD.997 (Tin levers) N.S. SCD.1180. Lower lever N.S. To be cut similarly to ExS.1756. No spare wheel carrier is to be fitted: this will be added later. In addition to the special pieces above, the first run will be testing the following standard pieces:- Frame Front and rear springs. 8-cyl. engine mounting. Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale} | ||