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).
Production of B.V. Flywheels and their required components from specific forgings.
| Identifier | ExFiles\Box 99\1\ scan0090 | |
| Date | 11th January 1939 | |
| 412 To HPS{Horace Percy Smith - Experimental Factory Mgr}/WSC.{W. S. Cassel} c. to Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} Rm{William Robotham - Chief Engineer}/NRC.{N. R. Chandler}9/JH.11.1.39. B.V. Flywheels. In reply to your query as to which flywheel rim should be produced from the seven GB.4418 forgings you have, please machine as follows - 1 off Rm.{William Robotham - Chief Engineer}570 for Al. engine B.V.1 for Ch. 14.B.V.(Paulin 1 off Rm.{William Robotham - Chief Engineer}569 for Al. engine B.V.4. for CH.9.B.V. 2 off GB.4418 " 1/C 6 cyl. engines. 3 off Rm.{William Robotham - Chief Engineer}576 " 8 8 cyl. engines. The above will require. 4 GB.4417 Disc. 3 Rm.{William Robotham - Chief Engineer}574 " 4 GB.4416 Friction face. 3 Rm.{William Robotham - Chief Engineer}575 " 7 GB.4115 Ball bearing housing. 84 GB.4427 Bolt, crankshaft, flange. 7 EB.4484 Crankshaft spigot. Rm{William Robotham - Chief Engineer}/NRC.{N. R. Chandler} | ||