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).
Incorporation of new valve springs and washers for the experimental Bentley III unit.
| Identifier | ExFiles\Box 97\1\ scan0068 | |
| Date | 12th October 1937 | |
| To HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} 200B Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}1/AP.12.10.37. 400 BENTLEY III. UNIT Further to our memo Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}1/MH.{M. Huckerby}11.10.37., for the assembly of 4 experimental Bentley III units, will you please incorporate:- (1) Valve springs to Rs.{Sir Henry Royce's Secretary}540 dn Swedish wire and coiled at R.R. (2) Top valve spring washers to Rm.{William Robotham - Chief Engineer}400. The inclusion of these springs will enable the unit to be run up to 4500 R.P.M. without bounce. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||