Cover note for Phantom III performance test curves from Brooklands, detailing acceleration, retardation and speedometer results.
| Identifier | ExFiles\Box 155\1\ scan0317 | |
| Date | 2nd July 1937 | |
| To Rm {William Robotham - Chief Engineer} from Rm {William Robotham - Chief Engineer} / IMW. {Ivan M. Waller - Head of Chateauroux} C. to Rm {William Robotham - Chief Engineer} / MW. 32 Ex. Phantom III Tests at Brooklands. 29-6-37 1320. 2.7.37. Herewith curves showing results obtained at The Track. 1. Acceleration curves, showing performance of car & comparison between direct & overdrive at speeds over 40 m.p.h. 2. Retardation curves, show total resistances in neutral. Figures taken by Rm {William Robotham - Chief Engineer} & by testers agreed throughout. 3. Speedometer correction, showing a 10% error with half worn treads. 4. Means of figures obtained. Rm {William Robotham - Chief Engineer} / IMW {Ivan M. Waller - Head of Chateauroux} (Prints of graphs for Rm {William Robotham - Chief Engineer} /mw, please.) | ||
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).