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).
Specifications for engine components including valves, camshaft, dynamo drive, and oil filter.
| Identifier | ExFiles\Box 97\1\ scan0218 | |
| Date | 17th September 1938 | |
| Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}4/MH.{M. Huckerby}17.9.38. -3- Valves and Fittings - Cont'd.{John DeLooze - Company Secretary} (2) Inlet valves as production Wraith, but in S/SLV bought out completely finished from Motor Components Ltd. (3) Rockers modified to suit fitting of Vandervell W/M bushes as per the Vandervell drawing B.2204. With these bushes the taper pin bush lock should be deleted, likewise the provision for it in the rocker arms. (4) Scheme ECD.846 to prevent oil leak down valve stems. Camshaft. (1) Camshaft ECD.673, forms ECD.681/2 with tachometer gear, otherwise as latest Wraith. This shaft is fitted to 15,000 miles unit and covered by Ex.J1550. (2) Up-to-date Wraith Attwater camwheel ECD.803/880. Dynamo Drive. 30-35 Durometer drive rubbers as Wraith. Oil Filter. General Filter in accordance with the scheme ECD.799. Other parts as up to date Wraith. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||