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).
Requesting a comparative petrol consumption test between car models 7.B.V. and 6.B.IV.
| Identifier | ExFiles\Box 83\2\ scan0348 | |
| Date | 2nd August 1938 | |
| To Rm{William Robotham - Chief Engineer}/IMW.{Ivan M. Waller - Head of Chateauroux} from Rm.{William Robotham - Chief Engineer} 200d also 400d Rm.{William Robotham - Chief Engineer}7/MH.{M. Huckerby}2.8.38. Will you please arrange to get the comparative petrol consumption between 7.B.V. and 6.B.IV., running on the same gear ratio and at the same weight. (1) At part throttle average 30 m.p.h over a given type road. (2) Similar type of road running nearer full throttle and averaging 45 m.p.h or thereabouts. During the [redacted] tests the cars should be run one behind the other. Please consult Salt and Ratcliffe before starting the test to ensure that the carburetter systems are considered to be 100% Rm.{William Robotham - Chief Engineer} | ||