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).
Petrol consumption test results for a Vauxhall '10' car.
| Identifier | ExFiles\Box 147\5\ scan0172 | |
| Date | 20th October 1940 | |
| Ev.{Ivan Evernden - coachwork} from Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} c. Jnr.{Charles L. Jenner} c. Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation} [Handwritten and crossed out:] Petrol consumption General Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager}1/HL.20.10.40. VAUXHALL "10". PETROL CONSUMPTION. Tests at constant speeds on Six Hills Road. (a) Driver and one passenger. (b) As (a) with additional 5 cwts. of ballast. (A) (B) 20 m.p.h. - 52.25 m.p.g. 51.00 m.p.g. 30 m.p.h. - 51.25 m.p.g. 49.25 m.p.g. 40 m.p.h. - 44.00 m.p.g. 42.75 m.p.g. 50 m.p.h. - 37.00 m.p.g. 36.50 m.p.g. Average petrol consumption over 6,000 miles at high average speeds - 28.5 m.p.g. Weight of car. FRONT 9 cwts. 1 qr. 0 lbs. REAR 9 cwts. 1 qr. 0 lbs. total 18 cwts. 2 qrs. 0 lbs. Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} | ||