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).
List of specification changes and notes for various engine components, referenced by section numbers.
| Identifier | ExFiles\Box 153\3\ scan0065 | |
| Date | 6th June 1940 | |
| -2- Rm.{William Robotham - Chief Engineer}3/JH.6.6.40. Cont'd.{John DeLooze - Company Secretary} mechanical pump. No rev counter. Crankshaft. Section 5010. As specified but without integral balance weights. Spring Drive Section 5020. No change. Connecting Rod. Section 5030. Machined rods in place of unmachined rods. Piston. Section 5040. No change. Cylinder Head. Section 5050. No change. Valves & Fittings. Section 5060. Valve gear arranged as on 3.B.50. Inlet Pipes. Section 5070. As specified with the addition of hot spot, choke operation. Carburetter. Section 5080. No change, except for hot spot choke. Air Silencer. Section 5082. No change. Camshaft & Bearings Section 5090. S/ZN camshaft to EX33974. Water Pump. Section 5160. 11.B.V. type with cast-iron rotor. SCD.1398. Oil Pump. Section 5170. No change. Wheelcase. Section 5180. No change. Water connection 5190. Ripple radiator to be adapted to Ripplet. Water connections to suit radiator with thermostatically operated shutters. Ev.{Ivan Evernden - coachwork} to look into height of radiator. Cont'd.{John DeLooze - Company Secretary} | ||